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User Manual WFM 601A, WFM 601E & WFM 601M Serial Digital

1. C 25 DISPlay INTENSITY display mode gt lt line select mode intensity C 26 DISPlay INTENSITY READ intensity C27 DISPlay INTENSITY AUDIO intensity WFM 601A Only C 28 DISPlay PIXC lt contrast range gt C 28 DISPlay PIXB lt blackness range gt C 28 DISPlay TRACEROT tracerotate C 29 DISPlay SCALEillum scale 0 ee eee eee C 29 DISPlay FOCUS lt line select mode range C 30 Error Commands a cius SEA C 31 ESR a tates Rann a ta aesgn ev egt C 31 ALLEN nrbe ERA ERE A eMe Dakin DEGREE IE RAT C 31 Eye Pattern Commands C 33 EYe DISPlay lt FLAT EQEYE WFM 601M C 33 EYe MODE OVERLAY EYE10 gt WFM 601E and WFM 601M Only C 33 EYe CLOckhpf lt E10HZ E100HZ E1000HZ WFM 601E and WEM 601M Only cece cence e tes C 34 Gain Commands e wee 9 Ne seh I ea S SER er C 35 GAIN AUDIO DBUO0 DBU4 DBU8 DBU12 gt WFM 601A Only C 35 GAIN W V STATE lt 1 1 5 1 10 gt C 35 GAIN lt WFM VEC gt VAR STATE lt ON OFP gt C 36 GAIN WFM VEC gt VAR VALUE gain C 36 GAIN
2. Serial router Patch panel SERA m Loop through input SERB Loop through input Serial sources LAT CC Output Figure 1 7 Monitoring serial digital signals around a routing switcher Line Termination waveform monitor uses passive loop through serial inputs similar in concept to those used in baseband video equipment Accordingly the loop through must be terminated externally It is important that this external termination meet accuracy and return loss requirements If the waveform monitor is installed to monitor an operating link the destination receiver and the connecting cable serve as the termination This monitoring connection is best because it checks the performance of the entire serial path The return loss of the waveform monitor is sufficiently high that in most cases the destination receiver sets the system return loss In cases where the waveform monitor is placed at the end of a link a BNC termination must be installed on one side of the loop through connector The termination must be 75 9 and DC coupled good return loss extends to DC Return loss should exceed 25 dB from 10 kHz to 270 MHz The supplied 75 2 terminators meet these requirements A terminator can be inspected for return loss problems using the WFM 601M or WFM 601E waveform monitor and a serial source with low aberrations such as the Tektronix TG
3. MR TT DECIMAL BINARY 1 E pcc Tek COMPONENT ANALOG 2 amp 4 LINE SEL SAMPLE Figure 3 14 Data List display mode in the Video mode Freeze Update Press the second bezel button to select between active video data and frozen data Frozen data is not updated with current values from the video data stream The Freeze mode stores six lines with three lines from each field Use the Next Field bezel button to switch between fields Line Select Settings In the Digital List display Line Select is set to Sample by default Use the bezel knobs labeled LINE and SAMPLE to select video lines and samples within a line The current field and line appear at the upper left on the CRT Use the Next Field bezel button to alternate between fields in a frame The Sample knob scrolls to the end of the line then returns to the beginning of the line WFM 601A WFM 601E amp WFM 601M User Manual 3 15 Reference Digital Waveform WFM 601M Only 3 16 Video Data Selection The Digital Waveform display shows the component data samples as a wave form Press the DGTL WFM DGTL LIST button to enter the Digital Waveform mode Figure 3 15 shows an example of the Digital Waveform display You can use the data cursor assigned to a bezel knob to scroll through the data wave form The data cursor remains centered while the data scrolls by The location of the data cursor on the Digital Waveform display is correlated with the data c
4. gt C 12 SERial MONitor GBRIYPbPr C 12 SERial EAVSAV lt PASS STRIP gt C 13 SERial ALarm lt error type alarm setting C 13 UIMENU command options C 14 Cursor Commands iui enre ke x e ES ERE C 16 CURsor SELect VOLT TIME VOLT TIMEI MARK I NONE C 16 CURsor CONTROL lt VOLT TIME 20 00 c eee cece eee eee C 17 MC lt ONE I TWO THREE marker position gt C 17 VCI TC gt lt ONE TWO voltage level timing range C 18 TCI VC gt TRACK lt ONIOFF gt 0 0 0 e e C 19 Digital Waveform and Digital List Commands C 20 DGTL WFM 601M Only ssseeee C 20 DGTL REGion WFM 601M Only sssseee III C 21 DGTL DATA WFM 601M Only ea eens ovs eda sai edid ceded C 21 DGTL VDATA WFM 601M Only ssssseee eee eee eee C 22 DGTL VIDmode VIDEO DATA WFM 601M Only C 23 DGTL FReeze ON OFF WFM 601M C 23 DGTL BASE HEX DECIMAL BINARY WFM 601M Only C 24 ii WFM 601A WFM 601E amp WFM 601M User Manual Table of Contents Display Commands eee enhn nn C 25 DISPlay SINGLE display gt
5. void open_al comPort sizeof ioBuf 2 sizeof ioBuf 2 0 0 ioBuf close al comPort If we can t at least get an OK the port is either missing or busy Us if tryCounter NUMBER OF RETIRES comPort NO PORT FOUND On error unset the comPort and return comPort 0 return errCode TAS sendToWfm601 Send data to an instrument from the WFM601x family This is the central procedure in this module It sends portMsg a newline terminated string to the instrument If the message is a query this procudure waits for the instrument to respond and places that response in expectedResp If the instrument returns any data while the message is being sent this procedure stores that data in unexpectedResp and returns W UNEXPEC RESP Finally a cancel callback is accepted to allow the user to decide when to stop waiting cancelFunc is periodically called and if it returns a non zero value the procedure immediately terminates pass NULL if you don t want to use this feature The response buffers should be at least 1024 chars in length which is the maximum length of an instrument response b F OR 0o FF F F F Xo X int sendToWfm601 char portMsg The newline terminated send message x char expectedResp Buffer for expected responses char unexpectedResp Buffer for unexpected responses 7 int cancelFunc void User cancel routine to stop waiting E WFM 60
6. Figure 1 17 Figure 1 18 Figure 1 19 Figure 1 20 Figure 1 21 Figure 2 1 Figure 2 2 Figure 2 3 Figure 2 4 Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 3 5 Figure 3 6 equal amplitudes Figure 3 7 Dimensions of the 1700F00 plain cabinet 1700F02 portable cabinet Rear view of the waveform monitor in a 1700F02 cabinet The 1700F05 rack cabinet holds two instruments 1700F05 cabinet showing utility drawer and blank panel Monitoring the video bit stream of a serial receiver Monitoring serial digital signals around Eye Pattern display of a termination with good Eye Pattern display of a termination with poor Initial equipment connections Initial display in the Waveform display mode Channel 1 of Color bar with CRT adjustments visible Eye Pattern display mode Jitter display mode Vector display for 100 Color bar signal Lightning display for 100 Color bar signal Arrowhead gamut display Diamond gamut display Video digital Data digital waveform Typical Audio display with small phase error WFM 601M front panel WFM 601A and WFM 601E front panels Elements of the waveform monitor menu controls Rear panel of the waveform monitor A signal from one channel only X and Y signal in phase with equal am
7. LP FILTer FLAT DIFF LP Table C 13 FILTer command options Arguments Remarks FLAT Selects a flat filter all pass for the Waveform and Parade displays DIFF Selects a differentiated step filter for the Waveform and Parade displays LP Selects a 1 MHz low pass filter for the Waveform and Parade displays filt flat filt FILTER FLAT Sets the Automatic Frequency Control Clock ON or OFF When AFC is OFF the synchronization is DIRECT and when ON synchronization is from the AFC clock AFC should be on except when large low frequency jitter is present in your system AFC lt ON OFF gt AFC lt ON OFF gt WFM 601A WFM 601E amp WFM 601M User Manual C 51 System Commands Examples Returns afc on afc AFC ON PORT ECHO lt ON OFF gt Syntax Arguments Examples Returns ROTEST lt ON OFF gt Syntax Arguments Examples Returns C 52 Enables the echo of remote commands to the controlling device through the remote interface port Echo should be on when using a monitor program and off when using a test program to send commands and receive data PORT ECHO lt ON OFF gt PORT ECHO ON OFF gt PORT echo OFF port echo PORT ECHO OFF Sets the Readout alignment markers ON or OFF When set to On four cross shaped markers appear on the display Use the Rotate bezel knob to adjust the display to match the horizontal and vertical graticule lines ROTE
8. SERial MONitor lt GBR YPbPr gt SERial MONitor lt GBR YPbPr gt ser mon gbr SERIAL MON YPBPR ser mon SERIAL MONITOR YPBPR WFM 601A WFM 601E amp WFM 601M User Manual Configuration Commands SERial EAVSAV PASS STRIP Syntax Arguments Examples Returns This command permits stripping of the END START of ACTIVE VIDEO information from the displayed signal This selection corresponds to the choices available under EAV SAV in the CONFIG WFM VEC menu SERial EAVSAV lt PASS STRIP gt SERial EAVS AV PASS STRIP ser eavsav pass serial eavsav strip ser eavsav SERIAL EAVSAV STRIP SERial ALarm error type alarm setting Syntax Arguments These commands select or disable checking for several types of format errors and correspond to the error selections available in the CONFIG SER ALARM menu Table C 2 lists the SERial ALarm error type commands error type and options alarm setting Use the UIMENU CONFIGSEL SERIALARM command page C 14 to put the waveform monitor into the serial alarm mode before using this command SERial ALarm lt error type alarm setting SERial ALarm ALarm error type gt error type alarm setting WFM 601A WFM 601E amp WFM 601M User Manual C 13 Configuration Commands Table C 2 SERial ALarm commands and options lt error type gt alarm setting Remarks FMTERR ALARM OFF Sets the format erro
9. VECtor b00 to 500 Positions the Vector display horizontally LTNG 500 to 500 Positions the Lightning display horizontally ARROWhead 2047 to 2047 Positions the Arrowhead Gamut display horizontally DIAmond 2047 to 2047 MT the Diamond Gamut display horizon ally AUDIO 330 to 330 Positions the Audio display horizontally WFM 601A only Examples pos vertical EYe 100 Returns pos horz eye POSITION HORIZONTAL EYE 0 pos vert ey POSITION VERTICAL EYE 100 WFM 601A WFM 601E amp WFM 601M User Manual C 45 Preset Commands Preset Commands The commands in this section allow you to select store and name parameter presets for the waveform monitor Use the command UIMENU PREset page C 15 to enable the preset functions PREset REcall PRESETn FACTORY Syntax Arguments Examples Returns Recalls the Preset stored in the named location The preset function allows you to store up to ten front panel setups Nine user defined presets and one factory preset The factory preset is programmed to assist in calibrating the instrument The letter n in the argument lt PRESETn gt represents a number between 1 and 9 PREset REcall PRESETn FACTORY gt lt PRESETn FACTORY gt preset rec factory None PREset STORE lt PRESETn gt Syntax Arguments Examples Returns C 46 Deletes the currently stored setting in the named memory location and replaces it with the current
10. 3 22 3 29 Eye Pattern rise time 3 24 3 29 graticule 3 34 interchannel timing with Lightning Display 3 57 Jitter Display 3 37 luminance gain with Lightning Display 3 57 observing word correlated behavior 3 27 PbPr gain with Lightning Display 3 57 phase error with Audio display 3 4 phase with Vector Display 3 54 serial data error rate 3 50 serial signal level for V 1 X firmware 3 47 source signal level 3 49 vector timing with Vector Display 3 55 Measuring serial sources 3 22 3 29 Mechanical installation 1 5 MENU buttons 2 4 Menu 1 2 CRT 3 12 Cursor 3 13 Filter 3 27 Gain 3 28 Line Select 3 39 Preset 3 43 use 2 5 with bezel buttons 2 5 with bezel knobs 2 5 Menus Using the Menus 2 5 Missing Video in Configure SER ALARM menu 3 11 Mode in Configure EYE PATTERN menu 3 10 MON OUT configuring as GBR or YPbPr 3 11 Format Configure menu 3 11 WFM 601A WFM 601E amp WFM 601M User Manual shifting with Line Select 3 39 Multi pin connectors 2 7 Multiple Display 3 41 Naming Preset 3 43 NTSC Arrowhead Gamut graticule 3 31 setting alarm cursor 3 32 0 Optional Accessories 1 3 Options 1 3 Other ANC Data Serial format selection 3 46 Output setting monitor out 3 11 Outputs Jitter Out 2 7 MON OUT Y G PB B PR R 2 7 rear panel 2 7 Serial Out 2 7 Overlay Eye Pattern trigger mode 3 20 P Packaging shipping car
11. C 5 SLM RCVR C 4 SLM SOURCE C 4 SWEEP MAG C 49 SWEEP TIMING C 48 User Interface menu commands C 14 Variable GAIN state for Lightning display C 37 Variable GAIN state for the WFM and VEC displays C 36 Variable GAIN value for the Lightning display C 37 Variable GAIN value for WFM and VEC displays C 36 VECtor BARS C 10 VECtor GRAT C 11 Voltage and timing cursor positioning C 18 Voltage and timing cursor tracking C 19 Remote operation B 1 Rename Preset function 3 43 Renaming Preset 3 43 Repackaging for Shipment 1 10 Replacing fuse D 1 graticule light bulbs D 2 Reset Serial format checks 3 46 Restoring front panel settings from Preset 3 43 RGB setting Gamut alarm 3 33 RGB gamut Diamond Display 3 29 Rise time calculating actual 3 25 serial channel measurements 3 24 RS232 connector pin assignments B 1 rear panel overview 2 7 S Safety Certification Compliance A 10 Safety Standards A 10 Sample selection using Line Select 3 39 SAV Placement Serial format checks 3 48 SAV EAV in Configure WFM VEC menu 3 9 Saving front panel settings as Preset 3 43 Screen filter part number 1 2 SER A B inputs 2 7 SER ALARM configuration menu 3 11 SERIAL 2 4 Serial A Input Loop through input 2 7 SERIAL A SERIAL B 2 4 Serial Alarm configure menu 3 11 Serial B input Loop through input 2 7 Serial channel measurements aberrations 3 23 WFM 601A WFM 601E amp WFM 601M U
12. Record it Continue to resend this character unexpectedRespt recvChar WFM 601A WFM 601E amp WFM 601M User Manual C 59 Remote Command Processing Code Break out of this loop and halt the program if the max number of retries has been exceeded if iSendAttempt gt NUMBER OF RETRIES strcpy expectedResp NADA printf nUnrelated character returned getch return libError end for character sending loop end while port message sending loop J If this is a query read the next line Wait forever until we get it i if isQuery for Wait up to 20 seconds for instrument response x if libError iwait al comPort 20 191 amp portStatus cancelFunc A OK return libError Get the instrument echo character if libError rdch al comPort expectedResp amp iq size amp portStatus A OK return libError Advance if character read wasn t a return if expectedResp n expectedRespt else It was expect a trailing r x if libError iwait_al comPort 20 191 amp portStatus cancelFunc A OK return libError Get the instrument echo character if libError rdch al comPort amp recvChar amp iq size amp portStatus A OK return libError Check if we failed to get a trailing return xj if recvChar r return W INVALID RESP break C 60 WFM 601A WFM 601
13. Table A 1 Electrical specifications Characteristic Waveform Vertical Deflection Deflection Factor Performance requirement Reference information For digital input 700 mV digital RGB on screen accuracy 3 input 700 mV 2 screen display any magnifier setting Variable Gain Range Frequency Response Transient Response Field Rate Tilt Line Rate Tilt Offscreen Recovery Voltage Cursor Accuracy Differentiated Step Filter Low Pass Filter Gain Response 0 2X to 1 4X Luminance channel Y to Typically 1 to 5 75 MHz luminance Y 5 0 MHz 2 channel and 1 to 2 75 MHz for the color Color difference channels and difference Pg and channels Pp to 2 5 MHz 2 Preshoot lt 1 Overshoot lt 196 Ringing x 196 Pulse to bar ratio 0 99 1 to 1 01 1 x 196 x 196 196 variation in baseline of a 5 MHz modulated pulse when positioned anywhere on screen X1 X5 or X10 with any variable gain setting 0 5 over 20 30 C 196 over rated temperature range Amplitude of pulses lt 1 variation 1 1 lt dB attenuation at 1 MHz gt 40 dB attenua tion at 4 MHz WFM 601A WFM 601E amp WFM 601M User Manual A 1 Appendix A Specifications Table A 1 Electrical specifications cont Characteristic Serial Digital Video Interface SER A and SER B inputs Performance requirement Reference information Format 270 Mbit s component Complies wit
14. WFM 601E and WFM 601M only Selects either STATUS FORMAT or CABLE screens WFM 601A WFM 601E amp WFM 601M User Manual Reference Status Screen for V1 X WFM 601M with V1 X firmware includes cable length and signal strength Firmware readouts in the Status screen as shown in Figure 3 32 The other information in the STATUS screen is the same as that shown in Figure 3 31 SIGNAL PRESENT AUDIO 525 LINES 12345678 10 BITS 910111213 14 15 16 EIL 10096 FORMAT ERROR OTHER ANC DATA STUCK BITS L L L L DISPLAY FF CRC ERR SEC 0 lsmus STATUS VALID FORMAT 0 AP CRC ERR SEC 1 STATUS VALID F1 AP CRC VALUE 10AB F2 AP CRC VALUE 10AB CABLE CHANGED SINCE RESET yes __ BELDEN 8281 BELDEN 1694 ELAPSED TIME 02 50 BELDEN 1505 SERIAL SIGNAL LEVEL 0 00 dB RESET APPROX CABLE LENGTH OMETERS Tek COMPONENT ANALOG 2 amp 4 Figure 3 32 Serial STATUS display for firmware V1 X The V1 X firmware Status screen includes cable measurement features With V2 X firmware these features moved to the DISPLAY CABLE screen The V1 X features provide the following information m CABLE TYPE Select the type of cable connecting the video source to the waveform monitor The correct Cable Type is necessary to calculate the Serial Signal Level and Cable Lengt
15. optional 1700F05 side by side rack adapter shown in Figure 1 4 consists of two attached cabinets Use it to mount the waveform monitor and another half rack width instrument such as an analog component monitor in a standard 19 inch rack You can adjust the rack adapter so that the waveform monitor is aligned with other equipment in the rack See Figure 1 4 p Mounting holes Mounting holes Front panel alignment holes Figure 1 4 The 1700F05 rack cabinet holds two instruments WFM 601A WFM 601E amp WFM 601M User Manual 1 9 Installation Repackaging for Shipment If you are using only one side of the rack adapter insert a blank panel 1700F06 or an accessory drawer 1700F07 in the unused section to improve airflow and appearance Figure 1 5 shows the blank panel and drawer 1700F05 1700F07 1700F06 Figure 1 5 1700F05 cabinet showing utility drawer and blank panel To ship the waveform monitor to a Tektronix Service Center for service follow these instructions 1 Attach a tag to the waveform monitor showing the name of the owner the complete address the phone number the instrument serial number and a description of the required service 2 Repackage the instrument in the original packaging materials If the original packaging materials are not available follow these instructions a Obtain a carton of corrugated cardboard having inside dimensions at least
16. selects the Preset 1 memory location to store the current front panel settings See the pin 25 description 18 Preset 2 Ground TTL low Recalls the stored Preset from this location or selects the Preset 1 memory location to store the current front panel settings See the pin 25 description 19 Preset 3 Ground TTL low Recalls the stored Preset from this location or selects the Preset 1 memory location to store the current front panel settings See the pin 25 description 20 Preset 4 Ground TTL low Recalls the stored Preset from this location or selects the Preset 1 memory location to store the current front panel settings See the pin 25 description 21 Preset 5 Ground TTL low Recalls the stored Preset from this location or selects the Preset 1 memory location to store the current front panel settings See the pin 25 description 22 Preset 6 Ground TTL low Recalls the stored Preset from this location or selects the Preset 1 memory location to store the current front panel settings See the pin 25 description 23 Preset 7 Ground TTL low Recalls the stored Preset from this location or selects the Preset 1 memory location to store the current front panel settings See the pin 25 description WFM 601A WFM 601E amp WFM 601M User Manual B 3 Appendix B Remote Operation Table B 1 Remote connector pin assignments and functions cont Pin number Function Signal requirement Miscellaneous information 24
17. 2 2 V DC plus peak AC Absolute Maximum Input Voltage 8 5 V to 8 5 V DC plus peak AC DC Input Impedance WFM 601A WFM 601E amp WFM 601M User Manual gt 20 kQ Appendix A Specifications Table A 1 Electrical specifications cont Characteristic Performance requirement Return Loss Reference information gt 40 dB to 6 MHz typically 46 dB to 6 MHz gt 40 dB to 10 MHz Waveform Horizontal Deflection Sweep Internal Synchronization Proper horizontal and vertical synchroniza tion with a component digital signal conforming to CCIR Rec 601 656 and SMPTE 125M External Synchronization Proper horizontal and vertical synchroniza tion with a composite sync signal of approximate line and field rate Sweep Length 12 divisions Sweep free runs without input Sweep Timing Accuracy 1 Line 5 us division 196 2 Line 10 us division 1 Sweep Linearity 1 Magnified Sweep Accuracy 1 Line 0 2 us division 1 2 Line 1 0 ps division 1 Magnified Sweep Linearity 1 Timing Cursors Accuracy 1 Horizontal Position Range Any portion of the synchronized sweep can be positioned on screen in all sweep modes Analog Audio Mode WFM 601A Only Input Full Scale Selection 1 Field displays one full field including field rate sync 2 Field displays two full fields and the field rate sync between them 0 5 over 20 30 C DC coupled differential input 20 input
18. 232 Conn ctOr oce esee Oe EE XY V REV IRURE A B 1 Remote Connector R eme wx RAE OES EES UR REA B 1 Appendix C Remote Command Set C 1 Cable Measurement Commands 3 SLM CABle lt B8281 B1694 B1505 WFM 601E and WFM 601M Only C 3 SLM SOURCE WFM 601E WFM 601M Only C 4 SLM RCVR WFM 601E and WFM 601M Only C 4 SLM LEVEL WFM 601E WFM 601M Only C 5 SLM LENGTH WFM 601E WFM 601M C 5 Configuration Commands C 6 REFErence MODE lt INT EXT gt ssssssee eh C 6 ARROWhead LIMIT PAL lt _7001 _950 gt C 7 ARROWhead LIMIT NTSC IRE 100 IRE_110 I IRE 1201 IRE 131 C 7 ARROWhead FORMat NTSCIPALIAUTO C 8 GAMut GRATicule XARROWhead DIAmond gt C 8 GAMut ALarm TRIGger NONE gt C 9 GAMut ALarm DISPlay lt SCRN I PICT BOTH C 9 STANDard LINES 5251LINES 625 1 AUTO C 10 VECtor BARS lt 1001 75 gt C 10 VECtor GRATicule LTNGIVECtor C 11 SERia MENU STATUS gt C 11 SERial DISPlay lt
19. 29 in Functional Check 1 23 setting Gamut alarms 3 33 Glossary Glossary 1 Graticule 2T Pulse to Bar measurement 3 36 Arrowhead NTSC and PAL 3 31 Audio display 3 4 for Vector Display 3 54 horizontal scale 3 36 internal 3 34 K factor measurement 3 35 K factor setup for measurement 3 35 light bulb part number 1 2 Lightning Display 3 56 line definition 3 34 vertical scale 3 34 waveform measurements 3 34 Graticule light bulbs replacement procedure D 2 H Hardware installation 1 5 1 11 Harmonic distortion Glossary 2 Horiz Pos using with MAG function 3 36 Horizontal gain calibration 3 7 Horizontal scale waveform graticule 3 36 Hue measurement with Vector Display 3 53 Incoming inspection procedure 1 15 Inputs rear panel 2 7 selecting SER A or B 3 58 Installation 1 5 1 14 accessory drawer 1 10 BNC connector compatibility 1 14 cabinet selection 1 5 connecting power 1 11 hardware 1 5 in a serial video system 1 12 installing in a rack 1 9 line termination 1 13 Index 4 repackaging for shipment 1 10 Instrument specifications A 1 J Jitter configure menu 3 10 definition 3 26 demodulation 3 38 serial channel measurements 3 26 using Line Select to limit measurement 3 38 viewing waveform 3 37 Jitter Display 3 37 Configure menu 3 38 configure menu 3 10 in Functional Check 1 20 Jitter HPF in Configure JITTER menu
20. 3 10 JITTER OUT signal origin 3 37 K K factor measurement graticule illustration 3 35 special graticule 3 35 using Gain with 3 35 L Light bulb part number 1 2 Lightning Display 3 55 Glossary 2 creating from Pb Pr and Y 3 55 interchannel timing measurement 3 57 luminance gain measurement 3 57 PbPr gain measurement 3 57 Limit Cursors for Gamut alarm 3 32 Limit Format in Configure GAMUT menu 3 10 Line selecting individual 3 39 selecting number of lines in sweep 3 52 Line Length Serial format checks 3 48 Line Select 3 39 data cursor correlation 3 39 selecting fields 3 39 use with Digital Waveform display 3 18 Line Field Sweep 2 4 Lissajous patterns 3 1 3 3 List Digital List display 3 14 Loop through inputs 2 7 LPASS Filter menu selection 3 27 Luminance Glossary 3 WFM 601A WFM 601E amp WFM 601M User Manual Index using with Timing Cursors 3 13 Magnified Sweep 2 4 Manual Service part number 1 3 Manuals related xi Markers using 3 13 Measurement amplitude with Vector Display 3 54 cable commands C 3 cable length 3 49 cable length for firmware V1 X 3 47 cable loss 3 49 calculating actual rise time 3 25 Cursor measurements 3 13 error rate using AP 3 51 error rate using EDH 3 50 Eye Pattern aberrations 3 23 3 29 Eye Pattern amplitude 3 22 3 29 Eye Pattern jitter 3 26 Eye Pattern measurements
21. 90 degrees and is terminated in amplitude targets that correspond to the length of the X and Y axes The boxes surrounding the crosshairs are equal to amplitude errors of 1 2 and 1 dB respectively Phase error is measured as degrees of phase shift and is relative to the minor axis of the ellipse pattern displayed on the CRT To determine the phase error read the value of the electronic graticule where the ellipse is tangent to the scale of the electronic graticule Figure 3 7 Typical Audio display pattern with small phase error The waveform monitor has four graticule calibrations available 0 4 8 and 12 dBu To adjust these levels use the following procedure 1 While in the Audio display mode press the GAIN menu button 2 Press one of the bezel buttons to select the appropriate calibration level WFM 601A WFM 601E amp WFM 601M User Manual Reference Bowtie Display The Bowtie display evaluates the relative amplitude and timing between the three video channels This display requires a special test signal from the monitored source See Figure 3 8 The Tektronix TG 2000 Waveform Generator can produce a bowtie signal with 20 ns time marks which aid in signal evaluation The signal is a 500 kHz sinewave on CH 1 luminance and 502 kHz sine waves on CH 2 Pb and CH 3 Pr The display is made up of two separate waveforms as shown in Figure 3 8 The left waveform always compares CH 1 to CH 2 The right waveform always
22. AC power Always install the waveform monitor in a WARNING A shock hazard exists in the waveform monitor when it has no cabinet cabinet before use 1 Perform steps listed under Initial Equipment Connections 2 Setthe video generator to produce a 10096 Color Bar signal and to enable its output 3 Press the front panel power switch on the waveform monitor Check that the indicator beside the switch lights up indicating ON 4 Check that the CRT and graticule light up When you apply power the waveform monitor restores its last settings 5 Initialize the waveform monitor settings The waveform monitor contains a factory Preset that restores the instrument to factory settings a Press the PRESET MENU button b Select the FACTORY setting by turning the bezel knob under the list of presets to highlight FACTORY c Press the bezel button adjacent to RECALL to load the factory preset d Check for the Waveform display mode with one channel of the Color Bar signal displayed Your display should look similar to Figure 1 11 WFM 601A WFM 601E amp WFM 601M User Manual 1 17 Functional Check Q 525 2 1 10yS DIV 8 7 a 100 3 Tek COMPONENT ANALOG 2 amp 4 Figure 1 11 Initial display in the Waveform display mode 1 18 WFM 601A WFM 601E amp WFM 601M User Manual Functional Check 6 Check the display brightness contro
23. Adjusts the brightness level of the permanent scale on the CRT The brightest value for the argument scale is 0 and the lowest is 2047 The best value depends on the brightness of the environment DISPlay SCALEillum scale DISPlay SCALEillum WFM 601A WFM 601E amp WFM 601M User Manual C 29 Display Commands Arguments Examples Returns scale disp scale 100 display scale DISPLAY SCALEILLUM 100 DISPlay FOCUS line select mode range Syntax Arguments Examples Returns C 30 Adjusts the CRT focus for different Line Select modes The range for all of the FOCUS settings is 22047 to 2047 Table C 8 describes the command options Use this command to set the focus for displays using Normal H1 or H15 LINE SELECT modes DISPLAY FOCUS lt line select mode range DISPLAY FOCUS FOCUS lt line select mode gt lt line select mode range Table C 8 DISPLay FOCUS command options lt line select mode Selects range NORMAL Line select off 2047 to 2047 See the command LINES MODE H1 H1 2047 to 2047 H15 H15 2047 to 2047 DISPLAY FOCUS H1 2047 disp focus norm 100 display focus DISPLAY FOCUS NORMAL 100 H1 2047 H15 2047 WFM 601A WFM 601E amp WFM 601M User Manual Error Commands Error Commands ESR ALLEV Syntax Arguments Examples Returns The waveform monitor detects errors and records error messages in
24. D 1 Graticule light bulb replacement WFM 601A WFM 601E amp WFM 601M User Manual Appendix D User Service CAUTION Needle nosed pliers are not recommended in the following step as they are more likely to break a bulb 4 Toremove a bulb position the tweezer tips on the thin flat portion of the bulb close to the plastic socket Carefully pull the bulb straight out 5 Toinstall a new bulb hold it with the tweezers on the flat portion align the bulb leads with the socket and push the bulb in until it snaps into place 6 Place the panel below the CRT and press on both the right and left sides of the panel until it snaps into place 7 Replace the five knobs below the CRT and tighten the set screws Cleaning Clean the dust from the outside of the waveform monitor with a soft clean cloth or small brush brush is especially useful for removing dust from around the selector buttons knobs and connectors Hardened dirt can be removed using a soft cloth dampened with a mild detergent solution Do not use abrasive cleaners CAUTION Do not allow water to get inside any enclosed assembly or component Do not clean any plastic materials with benzene toluene xylene acetone or similar compounds because they may damage the plastic Clean the light filter and CRT face with a soft lint free cloth dampened in denatured alcohol Do not use abrasive cleaners Interior cleaning and maintenance should be perfor
25. Examples Returns Returns the Approx Cable Length measurement based on the SLM CAB setting Cable length is the amount of cable between the video source and the waveform monitor This command works for firmware version V1 X and V2 X SLM LENGTH None sIm length SLM LENGTH 20 METERS WFM 601A WFM 601E amp WFM 601M User Manual C 5 Configuration Commands Configuration Commands The commands in this section allow you make the following changes to the waveform monitor Select the source of your reference signal W Select a specific mode for different displays for example select the Lightning mode when in the Vector display Set parameters for various displays Most of these commands correspond to the selections available from the CONFIG menu on the waveform monitor REFErence MODE INT EXT Syntax Arguments Examples Returns Selects either the internal serial digital or external composite video for the synchronization reference REFErence MODE INT EXT REFErence MODE INT EXT refe mode int refe mode REFERENCE MODE INTERNAL WFM 601A WFM 601E amp WFM 601M User Manual Configuration Commands ARROWhead LIMIT PAL MV 700 MV 950 Syntax Arguments Examples Returns Sets the PAL gamut limit amplitude on the ARROWHEAD graticule The gamut limit triggers an alarm when exceeded by the input signal This selection corresponds to the choices availab
26. Selects either 75 or 10046 graticules for the Lightning and Vector modes WFM AS In Waveform or Parade modes determines if channels 1 2 and 3 are displayed in their native Y Pp P format or transcoded to B RGB WFM AS does not affect the picture monitor output signal MON OUT m PBPR OFFSET Allows adding a 350 mV positive offset to the and channels to facilitate comparison with the Y channel Does not affect the transcoded RGB display or the picture monitor out signal m EAV SAV Determines what data is passed to the D A converters In Strip mode only digital signals between the SAV and EAV start and end of active region sync words are passed to the D A converters and subsequently to the display and the picture monitor output In Pass mode all digital data is sent to the converters WFM 601A WFM 601E amp WFM 601M User Manual 3 9 Reference 3 10 GAMUT Configures conditions and error indicators for the gamut error alarm GAMUT CHECK Determines whether RGB Composite CMPST or both types of gamut errors trigger the gamut alarm RGB indicates when the R G or B signals are less than mV or greater than 700 mV CMPST indicates when the sum of luminance and peak chrominance exceed the level selected with GAMUT IRE Use ALARM DISP to determine the indicator of the gamut alarm ALARM DISP Determines how the gamut alarm is indicated In SCREEN mode a gamut error message appears in
27. Sets the intensity of the Lightning display EYe lt NORMal H1 H15 gt 2047 to 1700 Sets the intensity of the Eye display 1 When REF mode is set to Internal the displayed 1H and 15H intensities both use the 15H intensity setting disp intensity wfm h1 1000 display intensity wfm DISPLAY INTENSITY WFM HI 1000 DISPlay INTENSITY READ lt intensity gt Sets the intensity of the on screen readout text Intensity is an integer from Syntax Arguments Examples Returns 2047 to 1700 DISPLay INTENSITY READ lt intensity gt DISPLay INTENSITY INTENSITY READ intensity displ intensity read 700 display intensity read DISPLAY INTENSITY READ 700 WFM 601A WFM 601E amp WFM 601M User Manual C 27 Display Commands DISPlay INTENSITY AUDIO intensity WFM 601A Only Syntax Arguments Examples Returns Sets the intensity of the on screen readout text Intensity is an integer from 2047 to 1700 DISPLay INTENSITY AUDIO intensity DISPLay INTENSITY INTENSITY AUDIO intensity displ intensity audio 1000 display intensity audio DISPLAY INTENSITY AUDIO 1000 DISPlay PIXC contrast range Syntax Arguments Examples Returns Sets the contrast in the Picture display The contrast value is an integer from 170 low to 1200 high The median value 685 provides good contrast This setting corresponds to the CONTRAST adjustment availabl
28. a 10096 Color Bar signal d Press the bezel button labeled VECTOR LIGHTNING to select the Lightning display e Check that the display looks like the Lightning display pictured in Figure 1 16 WFM 601A WFM 601E amp WFM 601M User Manual 1 21 Functional Check a c N n 8 m 10yS DIV 100 N a A 50 HH IK 1 1 C Tek COMPONENT ANALOG Y 2 amp 4 Figure 1 15 Vector display for a 100 Color Bar signal piece 100 50 VECTOR LIGHTNING Tek COMPONENT ANALOG 2 amp 4 Figure 1 16 Lightning display for a 100 Color Bar signal 1 22 WFM 601A WFM 601E amp WFM 601M User Manual Functional Check 10 Check the Gamut display modes a Press the VECTOR GAMUT button to select the GAMUT display mode The indicator next to GAMUT should light up b Ifthe bezel button labeled DIAMOND ARROWHEAD does not have Arrowhead selected press that bezel button to select ARROWHEAD c Check that the display looks like the Arrowhead gamut display in Figure 1 17 525 2 1 8 7 100 6 ee Se p 4 lI 50 M 2 m M gt Pd remped E 1 L DIAMOND 3
29. a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE PO
30. accessories are listed here The following accessory items are included with this product 1 User Manual this manual 071 0103 XX 1 Power Cord United States and Japan only 161 0216 XX 1 Replacement Fuse Cartridge 2A 250 V fast blow 159 0021 00 3 Replacement Graticule Light Bulbs 150 0168 00 3 Replacement Air Filters for Fan 378 0415 00 2 75 Q High frequency End line Terminations 26 dB to 300 MHz 011 0163 00 1 Smoke Grey CRT Filter installed on instrument 378 0258 00 WFM 601A WFM 601E amp WFM 601M User Manual Getting Started Options The following options are available when ordering a waveform monitor Power Cord Options If you do not specify a power cord option the waveform monitor is shipped with a North American 125 V power cord and one replace ment fuse The following power cord options are available when purchasing your waveform monitor Power cords for use in North America are UL listed and CSA certified Cords for use in areas other than North America are approved by at least one test house acceptable in the country to which the product is shipped Option A1 Power Universal Europe 220 V 16 A Locking Power Cord m Option A2 Power United Kingdom 240 V 15 A Power Cord m Option Power Australia 240 V 10 A Power Cord m Option A4 Power North America 250 V 10 A Power Cord m Option 5 Power Swiss 240 V 6 A Power Cord Optional Accessories The following ite
31. digital signal does not contain audio informa tion the AUDIO readout disappears m Format Error WFM 601E and WFM 601M only Indicates a format error is present To see the type of format error press the DISPLAY bezel button to select FORMAT m Other ANC Data WFM 601E and WFM 601M only Indicates the presence of ancillary data other than EDH or Audio m Stuck Bits WFM 601E and WFM 601M only Indicate if any of the 8 or 10 data bits are locked The LSB is on the right Active bits are indicated by a hyphen and locked bits by an L for the low state and H for high m FF CRC ERR SEC full field CRC errored seconds Provides an EDH SMPTE RP 165 measure of asynchronous errored seconds based on CRC calculated for each field in the video signal m APCRC ERR SEC active picture CRC errored seconds Provides an EDH SMPTE RP 165 measure of asynchronous errored seconds based on CRC calculated for the active picture part of each video field m AP CRC VALUE active picture CRC value Calculates the CRC value for the active video part of field one m F2 AP CRC VALUE active picture CRC value Calculates the AP CRC value for the active video part of field two m Changed Since Reset Indicates if either the Fl or F2 AP CRC VALUE has changed since you last reset the timer m Elapsed Time Gives the time since you last reset the timer m Reset Sets the elapsed time back to zero and clears any detected EDH errors m Display
32. enable horizontal magnification Press the LINE FIELD button repeatedly to step through the following sweep modes m 1 Line One horizontal line is displayed Use Line Select function to choose one line out or a Field or Frame The horizontal scale is 5 us div m 2Line Two consecutive horizontal lines are displayed The horizontal scale is 10 us div m 1 Field All lines for one video field are displayed No horizontal scaling is given m 2 Field All lines for two video fields are displayed No horizontal scaling is given Use the LIN SEL MENU to choose the line or lines to display The MAG button provides a magnified view of the horizontal scale In the magnified mode the waveform extends off both sides of the CRT Use the HORIZ POS bezel knob to pan left and right on the waveform Timing Cursors operate correctly in the magnified mode though one or both may be off screen during measurement WFM 601A WFM 601E amp WFM 601M User Manual Reference Vector Display Modes Vector Display The waveform monitor provides two types of vector displays One is a conven tional Vector display that plots the two color difference signals Pb and Pr against each other The Vector display is useful for checking the chrominance phase and amplitude The second vector display is the Lightning display The Lightning display plots luminance Y versus Pb on the top and Y versus Pr on the bottom This display is useful for evaluating component
33. gain returns to WFM 601A WFM 601E amp WFM 601M User Manual Reference Gamut Displays The waveform monitor features two types of gamut displays The Diamond display checks video signals for proper RGB gamut The Arrowhead display checks composite coded video signals Both gamut or signal limit displays can trigger an alarm when the input signal exceeds a gamut limit Press the VECTOR GAMUT button to select GAMUT Use the bottom bezel button to select either the Diamond or Arrowhead display mode This selection may not be visible when other MENU functions such as GAIN are active Press the CLEAR SCREEN button to remove other function menus Diamond Display Diamond display is very effective at showing the relationship between the R G and B signal video signals The waveform monitor converts the Y Pp and P components recovered from the serial signal to R G and B to form the Diamond display Figure 3 22 shows how the Diamond plot is developed Ultimately all color video signals are coded as RGB for display on a picture monitor To predictably display all three components they must lie between peak white 700 mV and black V Picture monitors handle excursions outside the standard range gamut in different ways 700 mV Legal G and B space Green 0v Blue 700 mV 0v Red 700 mV Green Legal G and R space 700 mV X Y plot Diam
34. impedance 0 4 8 and 12 dBu full scale menu selectable Full Scale Accuracy 0 5 dB at 1 kHz Bandwidth 3 dB gt 500 kHz using a leveled sine wave X and Y Input Phase Matching lt 1 20 Hz 20 kHz Maximum Input Voltage 8 V peak measured to chassis ground Calibrator Waveform Square Wave Amplitude 700 mV 1 Frequency 100 kHz 0 1 Crystal controlled 10 us square wave Component Vector Mode Vertical Bandwidth gt 1 0 MHz Horizontal to Vertical Bandwidth lt 2 at 500 kHz and 2 MHz Matching Vertical Gain Accuracy 1 6 WFM 601A WFM 601E amp WFM 601M User Manual Appendix A Specifications Table A 1 Electrical specifications cont Characteristic Horizontal Gain Accuracy Display to Graticule Registration Electronic Graticule Shape Performance requirement 1 x 0 25 box with the color bar black display dot centered in target Reference information Minimal visible gaps o tails at corners of target boxes Vector Display is displayed on horizontal axis and is displayed on vertical axis Lightning and Diamond Mode Vertical Gain Accuracy 2 Electronic Graticule Display Diamond Lightning RGB Gamut Error Indication Detection Level Arrowhead Mode NTSC PAL Composite Limit Display Mode Signal to Graticule Registration Signal to Graticule Accuracy PAL values in parenthesis Composite Limit Cursor Accuracy PAL values in parenthesis Co
35. indicate 2 luminance and color difference gain errors respectively you can evaluate each color bar for encoding accuracy with these limits The Lightning display shows the relative level or coding accuracy for Y Pp and P for each of the eight primary colors much better than the Parade display mode WFM 601A WFM 601E amp WFM 601M User Manual 3 57 Reference Video In The VIDEO IN selections enable Serial input or B and determine which component signals are displayed The SERIAL A and B button corresponds to the SER A and B loop through inputs on the rear panel Only one input can be active at a time The CH 1 button displays the Y or luminance signal The CH 2 button displays the Pb or B Y chrominance signal The CH 3 button displays the Pr or R Y chrominance signal In the WFM AS RGB mode CH 1 displays R CH 2 displays G and CH 3 displays B Waveform Display The Waveform display mode displays voltage versus time for the selected video input A or B You can display the three input video channels singly or in combination When you display more than one channel of the input signal the channel traces are overlaid The waveform monitor uses a line store memory in 1H and Sample Line Select modes which allow it to display all video channels from the same video line This feature lets you view and measure concurrent data for all three channels Line Select Line Select menu offers two or three modes depending on your
36. monitor or by using the complete command string DISP SINGLE display mode Syntax X DISPIay SINGLE display mode DISPlay SINGLE Arguments display mode Table C 6 DISPLay SINGLE commands display mode Selects Remarks WFM Waveform Use the command INPUT SOU to select the A or B inputs and use INPUT CHA to select which of the RGB or YPbPr channels to display page C 38 VECtor Vector or Lightning Use the command VECTor GRATicule to select the Lightning or Vector display page C 11 EYe Eye For the WFM 601M use the command EYe DISP to select the Eye or EQEye display Use the command EYe MODE to select Overlay or 10 Eye mode Use the command EYe CLO to set the clock high pass filter page C 33 EQEYE EQ Eye Use for the WFM 601E only JITter Jitter Use the JITter commands to set jitter measurement parameters page C 40 WFM 601A WFM 601E amp WFM 601M User Manual C 25 Display Commands Examples Returns Table 6 DISPLay SINGLE commands cont display mode PIX Selects Picture Remarks Use the commands DISPlay PIXB and DISPlay PIXC to set the blackness and contrast levels page C 28 GAMut Diamond Arrowhead Use the command GAMut GRAT to select the DIAmond or ARROW display page C 8 BOWtie Bowtie AUDIO Audio Use the command GAIN AUDIO page C 35 to set the audio input gain level Use the POS lt VERT HORZ gt commands to position the Audio displa
37. oe beso rm ie C 19 Table C 6 DISPLay SINGLE commands 25 Table 7 DISPlay INTENSITY command options C 27 Table C 8 DISPLay FOCUS command options C 30 Table 9 Typical ALLEV responses to detected system errors 32 Table C 10 LINESelect commands and options C 42 Table C 11 POSition VERTical commands and options C 45 Table C 12 POSition HORZ commands and options C 45 Table C 13 command options C 51 WFM 601A WFM 601E amp WFM 601M User Manual vii Table of Contents viii WFM 601A WFM 601E amp WFM 601M User Manual General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it Only qualified personnel should perform service procedures To avoid potential hazards use this product only as specified Injury Precautions Use Proper Power Cord To avoid fire hazard use only the power cord specified for this product Avoid Electric Overload To avoid electric shock or fire hazard do not apply a voltage to a terminal that is outside the range specified for that terminal Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before m
38. of the cable measurements available in the Serial status mode You access these measurements differently depending on whether your waveform monitor has V1 X or V2 X or latter firmware With either version you must first enter the Serial mode by sending the command MENU SERial This is equivalent to pressing the SERIAL button on the front panel For waveform monitors with version V1 X firmware cable and signal strength commandis are active after sending the command SERIAL MENU STATUS For version V2 X firmware send the command SERIAL MENU CABLE This is equivalent to pressing the side bezel button to select the CABLE menu Cable measurements are active only when the SERIAL STATUS menu V1 X or SERIAL CABLE menu V2 X are selected Use the SLM commands to select the type of cable your installation uses and to query the waveform monitor for cable type and length You can also query for the computed signal level of a monitored signal Not all commands work with all versions of firmware SLM CABle B8281 B1694 B1505 gt WFM 601E and WFM 601M Only Syntax Arguments Examples Returns Selects the cable type for use by the Signal Level and Approx Cable Length measurements This selection corresponds to the Cable Type selection in the SERIAL menu This command works with V1 X and V2 X firmware SLM CABle B8281 B1694 B1505 SLM CABle B8281 B1694 B1505 gt slm cab b1694 slm SSLM LEVEL 4 75 dB LENGTH 20
39. or when a serial signal is not detected Selects either internal serial digital or external composite video input for the instrument synchronization reference Provides access to configuration and measurement functions that affect the DISPLAY mode Press a MENU button to display that menu and enable the WFM 601A WFM 601E amp WFM 601M User Manual Functional Overview associated functions Press the button again to exit the menu and disable the function POWER Puts the waveform monitor into the standby or operational state CLEAR MENU Turns off the MENU function readouts without affecting the menu settings Also provides access to alternative displays in some display modes Using the Menus The instrument has a set of front panel selectable MENU buttons that call up CRT readout menus These menus operate in conjunction with the five bezel buttons along the side of the CRT and the three knobs directly beneath it See Figure 2 3 Enabled menu selections are surrounded by a rectangle to indicate that they are active Pressing the CLEAR MENU button turns off the menu readout while leaving the functions associated with the current Display mode Pressing a MENU button when its menu is displayed turns off both the menu readout and in most cases disables the function By selecting Line Select Cursor Filter or Gain the last settings are returned For example if X5 was active when you last used the Gain menu returning to the
40. pattern test signal and the Active Picture CRC values Error Rate Measurement with EDH The EDH system computes a Cyclic Redun dancy Code CRC for each field of video and includes it with the video in an ancillary data field At the EDH receiver a CRC is calculated for the received field of video and compared against the transmitted CRC If they do not match then one or more errors have occurred during that video field To measure a serial digital link the source must insert EDH information Serial repeaters or processing equipment between the source and the destination receiver must pass ancillary data on the lines where the EDH is inserted For 525 line standards EDH data is on lines 9 and 272 and for 625 line standards on lines 5 and 318 If your source can not insert EDH use an alternative source such as the Tektronix TSG 422 Option 1S Generator This substitution is effective because sources must generate standard waveforms Connect the waveform monitor to the regenerated serial output of the destination receiver as depicted in Figure 3 35 Waveform Monitor Serial source rear panel Serial receiver with EDH 75 terminator SERA Regenerated Output Loop through input serial output Figure 3 35 Connection for point to point error measurements After making the connections ensure that the serial source is supplying an EDH compliant signal Check that the
41. range of 15 lines or a single sample within a line NUMBER line number Selects a particular horizontal line for Line Select Select the field using the command LINES FIELD and the sample using LINES SMPL SMPL sample For the WFM 601M selects a particular sample on a horizontal line for Line Select Select the line with the command LINES NUMBER and the field with LINES FIELD C 42 WFM 601A WFM 601E amp WEM 601M User Manual Line Select Commands Examples lines mode on Returns lines LINESELECT MODE ON NUMBER 573 SMPL 741 FIELD F2 FMODE TWO DISPLAY SAMPLE WFM 601A WFM 601E amp WFM 601M User Manual C 43 Position Commands Position Commands The commands in this section allow you to position displays vertically and horizontally on the graticule POSition VERTical display mode range POSition HORZ display mode range The POSition commands correspond to the bezel knobs that position the display vertically and horizontally POSition VERTical commands and options are listed in Table C 11 Table C 12 lists the POSition HORZ horizontal commands options Acceptable values for the argument range for both the vertical and horizontal positioning commands are from 500 to 500 When queried vertical 2 0 and horizontal 0 indicates that the display is centered NOTE For firmware versions V2 1 and below to position the Lightning display using the remote commands you must firs
42. that field 1 line 22 and sample 1441 is selected In 15 H mode starting and ending line numbers are given In 525 line standard with field 2 selected sequential line numbers appear in parenthesis To set the Line Select mode press the LIN SEL MENU button The Line Select menu appears offering control selections Bezel knobs are assigned to select line number and sample in SAMPLE mode Field Selection The bezel buttons FIELD and NEXT FIELD select the field from which the selected line sample is taken Selecting ALL displays the same line number from both fields in a frame The 1 of 2 selection lets you choose a line from only one field in a frame Press the NEXT FIELD button repeatedly to cycle through the fields in a frame Line or Sample Selection second bezel button allows selection of 15H and SAMPLE WFM 601M only display modes In 1H mode select a single horizontal line from anywhere in a frame On the output monitor the single selected line will be highlighted When the selected line is near the top or bottom of the frame the output monitor signal shifts to show the vertical sync region In the 15H mode you select a range of lines using the bezel knob On the output monitor a band of lines is highlighted The output monitor signal does not shift as with the 1H and SAMPLE modes In the SAMPLE mode select a horizontal line and a specific sample on that line In the Waveform and Parade Displays a rectangular mar
43. the lower left of the CRT In PIX MON mode the portion of the video picture that exceeds gamut blinks in a highlighted or bright up mode on the picture monitor output GAMUT Sets the level used for the CMPST gamut alarm For NTSC the levels are 100 110 120 and 131 IRE For PAL the levels are 700 mV and 950 mV Use GAMUT CHECK to pick the CMPST alarm LIMIT FORMAT Determines if the gamut limit check is for PAL or NTSC format signals AUTO mode automatically determines the input format EYE PATTERN Selects the display mode and attenuation of low frequency jitter for the EYE and EQ EYE display modes MODE Selects between OVERLAY and 10 EYE trigger modes Overlay displays all bits of a serial word at each eye location The 10 EYE mode displays all ten bits of the serial signal at ten fixed locations CLOCK BW Selects between 10 Hz 100 Hz and 1 kHz filters to suppress low frequency jitter JITTER Configures the Jitter measurement with a high pass filter and the units of the readout m JITTER HPF Selects from high pass filters 10 Hz 1 kHz 10 kHz and 100 kHz The selection appears in the jitter readout box and in the upper right corner of the CRT just below the horizontal deflection factor READOUT Determines whether the jitter measurement is in the units UI unit intervals or seconds or if the readout is off WFM 601A WFM 601E amp WFM 601M User Manual Reference SER ALARM Selects which events cause the Alar
44. the same as for K Factor measurement The 2T pulse to bar graticule lines are scaled according to the following formula 1 and 1 1 4K 14K Where K 0 02 for 2 K Factor using the dashed lines Or 0 04 for 4 Factor using the solid lines Set Gain to X5 to increase the resolution to 0 4 and 0 8 The horizontal reference line 0 V is also referred to as the base line 0 mV blanking level and black level The reference line has 12 major divisions Main marks at the 1st 6th and 11th divisions provide for timing and linearity measurements which should occur within the center ten divisions When the Sweep button is set to 1 Line each major division represents 5 us and when set to 2 Line sweep each major division represents 10 us The current deflection factor is displayed in the upper right corner of the CRT Pressing the MAG button magnifies the sweep so the scale on the baseline equals 500 ns per major division for 1 Line sweep and 1 us per major division in 2 Line sweep Use the HORIZ POS knob to view the waveform extremes when magnified WFM 601A WFM 601E amp WFM 601M User Manual Reference Jitter Measurement Display WFM 601M Only The Jitter display mode provides an automatic peak to peak measure of time jitter on the active SER A or B input signal Selectable high pass filters allow you to distinguish between high and low frequency jitter Figure 3 27 shows an example of the Jitter display in
45. turn off the function press the LINE SEL menu button when the menu readout is displayed press LIN SEL twice when the menu is not displayed WFM 601A WFM 601E amp WFM 601M User Manual Reference Multiple Display The Multiple display allows you to overlay two display modes When the Waveform or Parade mode is displayed you can add either the Vector Lightning or Diamond displays When you exit the Multiple display the previous display is restored Parade Display Display the component signals Y CH 1 Pb CH2 and Pr CH 3 using the Parade display You can choose to display one two or all three waveforms at once Measure the waveforms using the graticule or Cursors Gain and Sweep selections operate as in the Waveform display Gain selections are available to expand the waveforms vertically to aid in measurement The LINE FIELD button alternates between one line and one field The MAG selection expands the horizontal scale while still allowing you to take Cursor timing measurements Tek COMPONENT ANALOG 2 amp 4 Figure 3 29 Parade display of Y and Pb signals When Line Select is set to 1H and Ref is internal the CH 1 CH 2 and CH 3 waveforms are all from the same line When Line Select is set to 15H or Ref is external CH 1 is from line n CH 2 is from line n 1 and CH 3 is from line n 2 WFM 601A WFM 601E amp WFM 601M User Manual 3 41 Ref
46. waveform monitor EDH DET indicator is on Activate the SERIAL STATUS screen In the error table the number of program WFM 601A WFM 601E amp WFM 601M User Manual Reference seconds that contained errors errored seconds is indicated An elapsed time indicator gives the total time since the error counter display was last reset Use the elapsed time to calculate statistics such as percentage errored seconds Press the RESET bezel button to set both the errored seconds readouts and the elapsed time counter to zero Each ERR SEC readout has a STATUS field just below it The status can be either Valid Invalid or Missing Valid means a transmitted CRC is available to check for errors Invalid means some EDH information is present but the CRC used to check for errors is not available Missing means that no EDH information is present In this case the EDH DET indicator is off To check the error rate the EDH being used either FF full field or AP active picture must be Valid Note that if a CRC becomes Invalid while the error rate is being deter mined the ERR SEC readout will freeze Errors are not detected while the CRC is Invalid This measurement method is possible because the serial receiver under test creates the reclocked serial output after it has equalized the input signal recovered the clock and latched the data Any detection errors affecting the receiver also appear in the regenerated serial output and are de
47. 0 major divisions Use the Vert Pos bezel knob to position the bottom of the trace at the 3 line and check that the top is aligned with the 7 V line Enable the Timing Cursors Align the cursors as shown in Figure 3 21 The first cursor is at the crossing of the rising edge and 1 V line The second cursor is at the crossing of the rising edge and the 5 V line Use the horizontal MAG for greater accuracy when adjusting the cursors The indicated At time value is the standard 20 80 rise time measurement gt 100mV DIV AT 0 5nS DIV OVERLAY 8nS 1 kHz Figure 3 21 Timing Cursors alignment for measuring 20 80 rise time 3 24 WFM 601A WFM 601E amp WFM 601M User Manual Reference Calculating Actual Rise Time The waveform monitor Eye display has a bandwidth of 450 MHz which equates to a 20 80 rise time of 500 ps Consider this finite rise time when you measure the displayed rise time You can calculate the actual rise time of the source being measured using the following formula TR source V Tiimeasured Y 0 5nsy TR source the actual 20 80 rise time of the source in ns TR measured the 20 80 rise time measured on the waveform monitor in ns Table 3 1 lists actual rise times for a number of rise time values measured with the waveform monitor Table 3 1 List of measured and actual rise times for the waveform monit
48. 01E amp WFM 601M User Manual Installation Included Accessories Hardware Installation Cabinets This section provides instructions for installing the waveform monitor into a standard rack or one of the optional cases At installation time save the shipping carton and packing materials including the anti static bag in case you need to ship the instrument The waveform monitor is shipped with several accessory items which may be required for normal use For more information on accessories refer to page 1 2 Because operating environments vary the waveform monitor is not shipped with a cabinet unless you have ordered one AII qualification testing for the waveform monitor was performed in 1700F00 cabinet To guarantee compliance with specifications you should operate the waveform monitor in one of the cabinets described here The cabinets offered for the waveform monitor provide EMI shielding protect against electrical shock and protect against the accumulation of dust Figure 1 1 shows the plain cabinet option 1700F00 A rear panel fan supplies filtered cooling air which exits through the cabinet vent holes Restricting the air flow through the vents or the rear fan can lead to an excessive internal temperature NOTE To meet EMI emission specifications the waveform monitor must be installed in a Tektronix 1700F00 1700F02 or 1700F05 enclosure The enclosure front edges must securely contact the conductive front bezel o
49. 1 MARK2 and bezel knobs when MARK is enabled under the CURSOR menu The range of accepted values for the argument marker position is 548 to 3548 MC lt ONE I TWO THREE marker position MC ONE TWO THREE ONE TWO I THREE gt marker position mc three1838 mc one 1200 mc MCURSORS ONE 1200 TWO 2025 THREE 1838 WFM 601A WFM 601E amp WFM 601M User Manual C 17 Cursor Commands VC gt lt TWO voltage level timing range Positions the voltage or timing cursors over the voltage range or timing base of the displayed waveform When TRACK is ON moving one cursor moves the other cursor the same distance Table C 4 describes the voltage and timing cursor positioning commands arguments and limits Syntax VCITC ONEITWO voltage level timing range VCI TC ONE TWO Arguments voltage level timing range Table C 4 Voltage and Timing Cursor positioning commands and options Commands VC ONE TWO Arguments Limits voltage level 0 4000 TC lt ONE TWO lt timingrange gt 10 4000 Examples vc one 3000 tc two 2136 tc one 1000 Returns tc TCURSORS ONE 1000 TWO 2136 DIFFERENCE 1136 TRACK OFF C 18 WFM 601A WFM 601E amp WFM 601M User Manual Cursor Commands TC VC TRACK ON OFF Syntax Arguments Examples Returns Enables cursor tracking When TRACK is ON moving one cursor m
50. 100 Hz and 1 kHz These filters only show jitter terms above the selected filter frequency For example with 1 kHz selected 50 Hz jitter is heavily attenuated while 10 kHz jitter appears unattenuated To measure timing jitter with the waveform monitor perform the following steps 1 Perform the initial settings for Eye measurements described on page 3 22 2 Choose the OVERLAY display mode located in the EYE PATTERN CONFIGure menu In this mode each of the ten bits of a scrambled serial word are overlaid in the same location showing peak jitter at each eye crossing 3 Select the appropriate BW Limit filter Take two measurements one with the 10 Hz filter showing total broadband jitter and one with the 1 kHz filter which removes the low frequency jitter 4 Enable the Timing Cursors 5 Position the cursors to measure the Eye zero crossing point 6 Set Gain to X5 for better vertical resolution use SWEEP MAG for better horizontal resolution Suggested limits for jitter are 740 ps p p over one horizontal line measured with the 1 kHz BW Limit filter If composite D A conversion is planned use the 10 Hz BW Limit filter and the same 740 ps p p limit To date many of the jitter problems in systems have been the result of genlock ing clocks to other references such as the horizontal synchronization pulse Reference jitter transferred by genlocks into a serial system is typically between 20 and several hundred hertz Also the p
51. 1A WFM 601E amp WFM 601M User Manual C 57 Remote Command Processing Code register char Char to send to the instrument recvChar Char received from the instrument unsigned int portStatus Status of the serial port x int isQuery 0 Set if portMsg is a query char baseUnexp The base unexpected response x register int libError Error code returned from library int iq size Unused return arg required by lib x int iSendAttempt Counter to halt pgm after x retries 77 Return invalid port when port has not been initialized zi if comPort 0 return INV_PORT Set the base unexpected response pointer baseUnexp unexpectedResp Initialize the send attempt counter iSendAttempt 0 Loop until we reach the end of string while sendChar portMsg 0 Force character to be lower case i if isupper sendChar sendChar tolower sendChar Send the current character to the instrument E if libError wrtch al comPort sendChar A OK return libError Mait up to 10 seconds for char to be sent libError drain 1 2 10 19 0 Complain if char was not sent bad cable v if libError A OK amp amp libError TIMEOUT return libError Record whether this is a query command if sendChar isQuery 1 Loop until all characters are sent Mait up to 30 seco
52. 2000 mainframe with a DVG1 Generator module Connect the generator serial output to one side of the waveform monitor loop through connector and install the terminator on the other side Select the EYE mode and observe the Eye Pattern paying particular attention to leading edge aberrations WFM 601A WFM 601E amp WFM 601M User Manual 1 13 Installation Figure 1 8 shows the Eye Pattern with a good return loss terminator Figure 1 9 shows the distorted Eye Pattern of a terminator having only 13 dB return loss capacitive at 100 MHz Terminations with aberrations under 1046 are accept able Figure 1 8 Eye Pattern display of a termination with good return loss Figure 1 9 Eye Pattern display of a termination with poor return loss Compatibility of BNC Center Pins Most video equipment BNC connectors whether 50 or 75 Q use a 50 Q standard center pin Some laboratory 75 Q BNC connectors use a smaller diameter center pin The BNC connectors on the WFM 601M are designed to work with the 50 standard large diameter center pins Do not use connectors or terminators with the smaller center pins They could cause intermittent connections WFM 601A WFM 601E amp WFM 601M User Manual lee Dee I A er Functional Check Required Equipment The following procedure provides a basic operational check of the waveform monitor Only instrument functions not measurement quantities or specifications are c
53. 3 17 Reference Gain Interactions Use the GAIN MENU function to magnify the vertical gain of a single channel by X5 or X10 Figure 3 17 shows CH 1 with X5 gain Note the data cursor readout is for the Y channel with a value of 868 decimal F1 80 ae ee xi 100 50 4 nS VARIABLE _ ON OFF 4 E 3 Tek COMPONENT ANALOG 2 amp 4 LINE SEL SAMPLE Figure 3 17 Digital Waveform display showing X5 gain on CH 1 Y waveform Line Select Settings Choosing the Digital Waveform display forces Line Select to the Sample mode Line Select in the Sample mode assigns two bezel knobs to select video lines and samples within a line The current field and line readout appear at the upper left on the CRT Press the Next Field bezel button to alternate between fields in a frame The Sample knob scrolls to the end of the line then returns to the beginning of the line 3 18 WFM 601A WFM 601E amp WFM 601M User Manual Reference Eye Display WFM 601E and WFM 601M Only The Eye pattern display presents a voltage versus time waveform composed of multiple sweeps of the serial bit stream You can measure the amplitude rise time aberrations and jitter of the serial signal using the Eye pattern display Select either the Serial A or B input for display and measurement You can also choose to display the raw s
54. AL bezel knob Press the GAIN CAL button if the V CAL knob is not available Setting Horizontal Gain 1 Press the Waveform PARADE button to select the Waveform display 2 Press the CONFIG menu button and use the bezel knob to select the CALIBRATE submenu Press the bezel buttons to set CAL SIG on and GAIN CAL on 3 Ifthe RESET H CAL readout is on press the adjacent bezel button to turn it off Pressing the RESET H CAL bezel button reinstates the gain setting established at the last calibration 4 Press the SWEEP LINE FIELD button to select the 2 Line sweep mode 10 us div and check for one full cycle per major division 5 Ifthe gain is off slightly adjust the horizontal gain with the H CAL bezel knob If the H CAL knob is not available press the GAIN CAL button WFM 601A WFM 601E amp WFM 601M User Manual 3 7 Reference Configure Menus The Configure menu provides configuration selections for all display modes and some external signals Press the CONFIG MENU button at any time to enter the Configure menu Figure 3 11 shows a sample Configure menu and the bezel knob used to select from the list of Configure menus Figure 3 12 provides a map of all Configure menu functions 8 7 100 6 _ p COLOR BARS 4 75 10096 5096 WFMVEC WFM AS GAMUT RGB
55. AR VERT HORZ gt VALUE VERT HORZ gt and gain gain Itng var vert state on gain Itng var vert value 2000 gain Itng var vert GAIN LTNG VAR VERT STATE ON VALUE 2000 WFM 601A WFM 601E amp WFM 601M User Manual C 37 Input Commands Input Commands The commands in this section allow you to make the following changes to the waveform monitor Select an input signal source m Select which channel or channels to display m Set the offset level for the Pb and Pr channels of the input signal INput SOUrce SERIALA SERIALB gt Selects the signal for display from the A or B rear panel loop through inputs Syntax INputSOUrce lt SERIALA SERIALB gt INput SOUrce Arguments lt SERIALA SERIALB Examples in sou seriala Returns input sou INPUT SOURCE SERIALA C 38 WFM 601A WFM 601E amp WFM 601M User Manual Input Commands INput CHANnel CH1 CH2 CH3 gt Syntax Arguments Examples Returns Selects the component YPbPr or RGB channel to display in Waveform and Parade displays The channel mapping is CH1 Y R CH2 Pb G CH3 Pr B and any combination of the three channels can be displayed at one time by separating the channel options with commas INput CHANnel CHI CH2 CH3 gt INput CHANnel CHI CH2 CH3 gt input chan ch1 ch2 in chan INPUT CHANNEL CH1 CH2 INput PBPROFFSet lt 0 350 gt Syntax Arguments Examples Ret
56. C 801 5 Power Line Surge Immunity Low Voltage Directive 73 23 EEC EN 61010 1 Safety requirements for electrical equipment for measurement control and laboratory use 1 Use high quality shielded cables When installed in any of the following Tektronix instrument enclosures 1700F00 Tektronix part number 437 0100 04 1700F02 Tektronix part number 437 0018 07 1700F05 Tektronix part number 437 0095 04 WFM 601A WFM 601E amp WFM 601M User Manual A 11 Appendix A Specifications A 12 WFM 601A WFM 601E amp WFM 601M User Manual B Appendix B Remote Operation The waveform monitor has two multi pin connectors on the rear panel that provide different types of remote control The RS 232 port provides for automated calibration using a procedure contained in the Service Manual In a future firmware release the RS 232 port will provide remote control using a SCPI command set The REMOTE connector provides a way to monitor signal errors and to load or save Presets It also provides two audio channel inputs for the WFM 601A RS 232 Connector The RS 232 connector is a 9 pin D type connector that provides a remote verification interface Figure B 1 shows the pin assignments and the commu nication parameters for the RS 232 interface Pin Number Data Connection DCD Received line signal detector 2 RXD Received data 3 TXD Trans
57. CLOckhpf lt E10HZ E100HZ E1000HZ gt EYe CLOckhpf lt E10HZ E100HZ E1000HZ gt eye clo e1000hz eye EYE DISPLAY EQEYE MODE EYE10 CLOCKHPF E1000HZ WFM 601M EYE MODE EYE10 CLOCKHPF E1000HZ WFM 601E WFM 601A WFM 601E amp WFM 601M User Manual Gain Commands Gain Commands The commands in this section allow you to select fixed gain levels or set variable gain levels for the Waveform Vector and Lightning displays GAIN AUDIO DBUO DBUA DBUG DBU12 gt WFM 601A Only Sets the gain level of the analog audio input to the desired level and scales the electronic graticule accordingly Syntax GAIN AUDIO DBUO0 DBUA4 DBUS8 DBU12 gt GAIN AUDIO Arguments DBUO DBU4 I DBU8 I DBUI2 Examples eain audio dbuO Returns gain audio GAIN AUDIO 0 GAIN W V STATE xi 5 10 gt Sets the fixed vertical gain of the Waveform display to X1 X5 or X10 Gain is selectable in the GAIN menu Syntax GAIN W V STATE lt 11 51 10 gt GAIN W V STATE Arguments lt 11 51 10 gt Examples gain w v state x5 Returns gain w v state GAIN W V STATE X5 WFM 601A WFM 601E amp WFM 601M User Manual C 35 Gain Commands GAIN lt WFM VEC gt VAR STATE ON OFF Syntax Arguments Examples Returns Sets variable vertical gain ON or OFF for the Waveform or the Vector displays Variable gain is selectable in the GAIN menu GAIN lt WFM VEC gt VA
58. COMPONENT ANALOG 2 amp 4 Kpg Figure 3 33 Serial format display showing the FORMAT screen Features of the Format Screen The Format screen provide the following information Data Range Indicates an error if the reserved values of 000h 003h 3FCh 3FFh are used incorrectly Sav Placement Indicates an error if SAV is improperly placed with respect to the preceding EAV Line Length Indicates an error if there are an incorrect number of samples from one EAV to the next Field Length Indicates an error if there are an incorrect number of lines in a field ANC Parity Indicates an error if a parity error has occurred in ancillary data WFM 601A WFM 601E amp WFM 601M User Manual Reference m ANC Checksum Indicates an error if an ancillary data checksum error has occurred CABLE Screen The CABLE screen displays signal level and cable length readouts and allows WFM 601E and you to select the cable type used in your installation See Figure 3 34 This WFM 601M Only screen appears only with firmware V2 X and later SIGNAL PRESENT 525 LINES 10 BITS E 100 DISPLAY SOURCE SIGNAL LEVEL 100 UE APPROX CABLE LENGTH OMETERS FORMAT 50 CABLE LOSS 0 00 dB CABLE CABLE TYPE pus BELDEN 8281 BELDEN 1694 BELDEN 1505 Tek COMPONENT ANALOG 2 amp 4 Figure 3 34 Serial f
59. Characteristic Performance requirement Reference information Jitter Attenuation 10 Hz HPF lt 10 for frequencies gt 20 Hz 3 dB at approximately 10 Hz 100 Hz HPF 10 for frequencies gt 300 Hz 3 dB at approximately 100 Hz 1 kHz HPF lt 10 for frequencies gt 3 kHz 3 dB at approximately 1 kHz Up to 3 dB jitter gain from 2 4 kHz Display Modes Overlay Overlays bits 0 9 of a serial word to form each Eye opening 10 Eye Parades bits 0 9 in a 10 Eye display Deflection Factor Vertical 800 mV 5 with an 800 mV p p input Horizontal Overlay Mode 1 ns div 3 10 Eye Mode 3 ns div 396 Mag On 500 ps div 396 Jitter Display WFM 601M Only Type Demodulated recovered clock Digital Readout Accuracy 0 05 UI 1096 of reading Dynamic Range Alignment Jitter 2 4 UI p p Timing Jitter 9 0 Ul p p Resolution Alignment Jitter 0 02 UI Timing Jitter 0 1 Ul 3 dB Bandwidth Alignment Jitter Bandwidth 10 Hz to 5 MHz selection 1 kHz to 5 MHz 10 kHz to 5 MHz 100 kHz to 5 MHz Timing Jitter 10 Hz to 5 MHz Jitter Waveform Accuracy 10 WFM 601A WFM 601E amp WFM 601M User Manual A 3 Appendix A Specifications Table A 1 Electrical specifications cont Characteristic Dynamic Range Deflection Factor Performance requirement Reference information 10 UI p p Horizontal Four modes available 1 Line 2 Line 1 Field 2 Field Vertical X1 1 Ul div 5 X5 0 2 Ul div 10 X10 0 1 U
60. D ABGESCHIRMT BESCHLEUNIGUNGSSPANNUNG KLEINER ALS 20KV LISTED s Y CONFORMS TO ANSI ISA 582 01 60418 1 5 750 90 250V gt LOOP 50 60Hz THROUGH q INPUTS SERIAL JITTER OUT OUT SERB e REMOTE 5 RS232 1 13 1 PNTE N Q RE 9 6 25 14 Figure 2 4 Rear panel of the waveform monitor 2 6 WFM 601A WFM 601E amp WFM 601M User Manual Functional Overview Loop Through Inputs There are three passive loop through inputs located on the rear panel are compensated for 75 impedance and require proper termination at one end of the loop through connector or at the receiver in a monitored system SER A and SER B Provides for connection of two 270 Mb serial component data signals These inputs have minimal impact on the monitored serial data path EXT REF Provides for connection of an external synchronization signal such as black burst or composite video Coaxial Outputs Five rear panel connections drive signals into a 75 Q environment MON OUT Y G Pp B Pp R Provides three 75 component signal outputs to drive a component picture monitor You can set the output format to YPpPp or GBR Invalid input signals cause a blinking highlight of the monitor display at the line where the error occurs This gamut error highlight or bright up signal is present on t
61. E amp WFM 601M User Manual Remote Command Processing Code Terminate the string of chars received above expectedResp 0 Return an unexpected warning if we got one from the instrument if unexpectedResp baseUnexp return W UNEXPEC RESP return 0 WFM 601A WFM 601E amp WFM 601M User Manual C 61 Remote Command Processing Code C 62 WFM 601A WFM 601E amp WFM 601M User Manual D d P Appendix D User Service This section describes preventive maintenance for the waveform monitor and how to replace graticule light bulbs If the waveform monitor does not function properly send it to a qualified service personnel or contact Tektronix for service Cleaning or Replacing the Fan Filter To ensure adequate air flow clean or replace the rear panel fan filter regularly The interval between filter cleaning or replacement is determined by the operating environment In a dusty environment check the filter monthly The Accessories kit shipped with your waveform monitor contain several replace ment filters To clean or replace the filter follow these steps 1 2 Fuse Replacement Turn off power to the waveform monitor Carefully pull the fan cover housing off the fan No screws attach the cover to the fan Remove the filter from the fan cover Wash the filter in a mild detergent solution rinse thoroughly and dry Place the clean dry filte
62. FM 601E amp WFM 601M User Manual Eye Pattern Commands Eye Pattern Commands The commands in this section allow you to select either the Eye or EQEye displays and to toggle between the Overlay and 10 Eye modes Use the command DISPlay SINGLE EYe to enable the Eye display EYe DISPlay FLAT EQEYE gt WFM 601M Only Syntax Arguments Examples Returns Selects either the Flat or raw digital data stream or an Equalized data stream for the Eye display The Flat mode corresponds to the EYE bezel button selection in the Eye display mode The EQEYE mode compensates for cable loss in a long cable by applying receiver equalization to the signal EYe DISPlay FLAT EQEYE gt EYe DISPlay lt FLAT EQEYE gt ey disp eqeye eye disp EYE DISPLAY EQEYE EYe MODE lt OVERLAY 10 gt WFM 601E WFM 601M Only Syntax Arguments Examples Returns Selects the trigger mode for the Eye display OVERLAY displays three eyes and EYE10 displays 10 eyes EYe MODE lt OVERLAY EYE10 gt EYe MODE lt OVERLAY EYE10 gt eye mode 10 eye mode EYE MODE EYEIO WFM 601A WFM 601E amp WFM 601M User Manual C 33 Eye Pattern Commands EYe CLOckhpf E10HZ E100HZ E1000HZ gt WFM 601E WFM 601M Only Syntax Arguments Examples Returns C 34 Selects between high pass filters 10 100 or 1000 Hz to suppress low frequency jitter while in the Eye display mode EYe
63. FM 601M User Manual C 9 Configuration Commands STANDard LINES 525 LINES 625 AUTO Syntax Arguments Examples Returns Sets the scanning standard that the instrument expects to NTSC 525 lines or PAL 625 lines When in the AUTO mode the waveform monitor automatically senses the standard of the input signal This selection corresponds to the choices available under STANDARD in the CONFIG FORMAT menu STANDard LINES 525 LINES 625 AUTO STANDard LINES 525 LINES 625 AUTO stand auto stand STANDARD AUTO VECtor BARS B100 B75 gt Syntax Arguments Examples Returns C 10 Selects the 75 or 100 graticule for the Lightning and Vector modes The graticule must match the type of the selected input signal This selection corresponds to the choices available under COLOR BARS in the CONFIG WFM VEC menu VECtor BARS lt B100 1 75 gt VECtor BARS lt B100 B75 gt vec bars b75 vec bars VECTOR BARS B75 WFM 601A WFM 601E amp WFM 601M User Manual Configuration Commands VECtor GRATicule LTNG VECtor gt Syntax Arguments Examples Returns Selects either the Lightning or Vector display Use the command DISP SINGLE VEC page 25 to enable the vector display modes VECtor GRATicule LTNG VECtor gt VECtor GRATicule lt LTNG VECtor gt vec grat ltng vec grat VECTOR GRATICULE LIGHTNING SERial MENU STATUS FORM CABLE Synt
64. Gain menu restores X5 gain Bezel buttons Display menus with their optional selections Menu selection buttons OUO OO q9 plea Bezel knobs Menu clear Figure 2 3 Elements of the waveform monitor menu controls WFM 601A WFM 601E amp WFM 601M User Manual 2 5 Functional Overview Rear Panel Connectors Figure 2 4 shows the rear panel of the waveform monitor A brief discussion of each connector follows the illustration Power Connector The waveform monitor is designed to operate from a single phase power source with the neutral conductor at or near earth ground Only the line conductor is fused for over current protection A protective ground connection through the grounding conductor in the power cord is essential for safe operation connect power to the waveform monitor if it is not enclosed in a prescribed WARNING Dangerous potentials are present on the Power circuit board Do not cabinet The waveform monitor operates from an AC line frequency of 50 and 60 Hz over the range of 90 250 VAC without the need for configuration Refer to Appendix A Specifications for additional information on power and environmen tal requirements Power connector DIE IN DIESEM GEHAT ENTSTEHENDE RONTGENSTRAHLUNG IST AUSREICHEN
65. LTNG VAR VERT HORZ gt STATE gt C 37 GAIN LTNG VAR VERT HORZ gt VALUE gain C 37 Input Commands 8 955655655 C 38 INputSOUrce SERIALA I SERIALB C 38 INput CHANnel lt CH1 CH2 CH3 gt 0 ee eee eee C 39 INput PBPROFFSet lt _01 _350 gt C 39 Jitter Measurement Commands C 40 JITter HPFILter J10HZ J1000HZ JIOKHZ JIOOKHZ gt WFM 601M Only C 40 JITter UNITS SEC UI OFF WFM 601M Only C 40 JITter XALIGNMENT TIMING gt WFM 601M Only C 41 Line Select Commands 55 5 C 42 LINESelect command options seseeeeeeeee C 42 Position Commands eeeeeeeeeeee enhn C 44 POSition VERTical display mode range POSition HORZ display mode range C 44 Preset Commands 5 5 5 C 46 PREset REcall lt PRESETn FACTORY gt C46 PREset STORE lt PRESETn gt 0 0 cette C46 PREset NAMES lt PRESETn gt any string C47 Sweep Commands cc cece cece cece cece ehh C 48 SWEEP TIMING ONEL I TWOL ONEFITWOF C 48 SWEEP TIMING ONELIONEF sssee een C 49 SWEEP MAG
66. M 601E amp WFM 601M User Manual Reference point turn the bezel knob next to the HORIZ POS knob clockwise to increase the readout intensity Press the CRT button to exit the CRT menu Cursors Cursors allow you to measure the amplitude or time difference between waveform features Cursors usually provide better measurement resolution than is possible measuring against the etched graticule Press the CURSOR MENU button to display the Cursor menu Cursor Menu Features The Cursor menu allows you to choose Voltage Cursors Time Cursors Markers or both Voltage and Time cursors When Voltage and Time cursors are active the three bezel knobs control cursor 1 cursor 2 and cursor tracking The difference in the settings of cursor 1 and cursor 2 is reported with CRT readout as AV or AT In the Both mode V T use the CONTROL bezel button to alternate between voltage and time cursor control Tracking locks the cursors at their current separation and lets you move them together Markers provide adjustable screen reference points with no associated readout Markers may be positioned vertically but not horizontally The three markers are identified by the type of dashed lines m Mark 1 has long dashes m Mark 2 has double dashes Mark 3 has short dashes Pressing the CLEAR MENU button removes the cursor selections but the cursors difference readout voltage or time and control assignments remain active and on screen To restore
67. MUT PARADE LI Cd PICTURE DGTL WFM BOWTIE DGTL LIST MULTIPLE SWEEP IDEO IN LINE ormer D CH1 FIELD cursor 292 unser C preset CH3 SERIALA SERIALB ub BU 4 1 aon 9 COMPONENT ANALOG 2 amp 4 KPB VERT POS HORIZ POS OQOOOO Figure 2 1 WFM 601M front panel WFM 601A WFM 601E amp WFM 601M User Manual 2 1 Functional Overview DISPLAY and VIDEO DISPLAY Buttons Tektronix WFM 601 ior 0 VECTOR WAVEFORM 0 GAMUT PARADE 0 WAVEFORM PARADE D PICTURE BOWTIE Tim orsa C ims 7 be 7 conre ew Em cursor unset preset conre dean C WFM 601A front panel WFM 601E front panel Figure 2 2 WFM 601A and WFM 601E front panels Six buttons in the DISPLAY or VIDEO DISPLAY area control the type of display Most buttons represent two related types of displays Press a button to select one of its two displays Press the button again to select the other When you select a display type the indicator beside it lights up EYE Displays the serial input signal as an Eye pattern display For the WFM 601M you can choose standard or equalized Eye displays
68. Meters CABLE B1694 SOURCE 95 PERCENT slm cab SSLM CABLE B1694 WFM 601A WFM 601E amp WFM 601M User Manual C 3 Cable Measurement Commands SLM SOURCE WFM 601E and WFM 601M Only Returns the power Signal Level readout of the source as a percent of an 800 mV signal This command works only with V2 X firmware See the corresponding V1 X firmware command SLM LEVEL Syntax SLM SOURCE Arguments None Examples slm source Returns SSLM SOURCE 95 PERCENT SLM RCVR WFM 601E and WFM 601M Only Returns a dB value for the power lost in the cable This command works only with V2 X firmware To ensure a correct measurement use the command SLM CABLE to indicate the cable type you are using Syntax SLM RCVR Arguments None Examples sim rcvr Returns SLM RCVR 2 dB C 4 WFM 601A WFM 601E amp WFM 601M User Manual Cable Measurement Commands SLM LEVEL WFM 601E and WFM 601M Only Syntax Arguments Examples Returns Returns the power Signal Level readout of the source in decibels with reference to an 800 mV signal This command works only with V1 X firmware See the corresponding V2 X firmware command SLM SOURCE The Signal Level value is derived as LEVEL 20 Log Estimated Source Power 800 mV A negative sign indicates that the received power is below 800 mV SLM LEVEL None slm level SLM LEVEL 4 75 dB SLM LENGTH WFM 601E and WFM 601M Only Syntax Arguments
69. NTSC GAMut GRATicule lt ARROWhead DiAmond gt Syntax Arguments Examples Returns C 8 Selects either the Arrowhead or Diamond display for displaying the signal gamut The Arrowhead display checks the composite gamut and the Diamond display checks the RGB gamut Use the command DISPlay SINGLE GAMut to enable the Gamut display mode GAMut GRATicule lt ARROWhead DIAmond gt GAMut GRATicule lt ARROWhead DIAmond gt display single gamut gam grat dia gam grat GAMUT GRATICULE DIAMOND WFM 601A WFM 601E amp WFM 601M User Manual Configuration Commands GAMut ALarm TRIGger NONE CMPST RGB BOTH gt Determines the type of gamut error that will trigger a gamut alarm This command corresponds to the selections found under GAMUT CHECK in the GAMUT CONFIG menu Syntax GAMut ALarm TRIGger NONE CMPST RGB BOTH GAMut ALarm ALarm TRIGger Arguments cNONEI RGB I BOTH Examples gamzal trig both Returns gam altrig GAMUT ALARM TRIGGER BOTH GAMut ALarm DISPlay SCRN PICT BOTH Determines where the gamut alarm indicator is displayed This command corresponds to the selections found under ALARM DISP in the GAMUT CONFIG menu Syntax GAMut ALarm DISPlay SCRN PICT BOTH GAMut ALarm ALarm DISPlay Arguments lt SCRN PICT BOTH gt Examples gamzal disp pict Returns gam al disp GAMUT ALARM DISPLAY PICT WFM 601A WFM 601E amp W
70. Preset 8 Ground TTL low Recalls the stored Preset from this location or selects the Preset 1 memory location to store the current front panel settings See the pin 25 description 25 Store Ground TTL low Grounding STORE enables storage of instrument settings When STORE transitions low when one of the PRESETS is low the current front panel settings are stored in that Preset location B 4 WFM 601A WFM 601E amp WFM 601M User Manual a Appendix C Remote Command Set This section describes the remote command set for the waveform monitor and provides examples of typical usage The remote command set is a versatile and convenient interface that conforms to industry standards for programmable instruments The waveform monitor permits remote operation through the RS 232 port on the rear panel Remote communication parameters are described in Appendix B Remote Operation The waveform monitor was not designed to be machine driven consequently characters can be dropped if they are input while the processor is carrying out other operations To compensate the code for a remote communications retry program has been included at the end of this section This program ensures that characters are not dropped when they are input into the waveform monitor You may type commands from your work station with or without the program however if you want to create machine driven test and measurement prot
71. R STATE ON OFF gt GAIN WFM VEC gt VAR STATE lt WFM VEC gt and lt ON OFF gt gain wfm var state on gain wfm var state GAIN WEM VARIABLE STATE ON GAIN lt WFM VEC gt VAR VALUE gain Syntax Arguments Examples Returns C 36 Sets the value of variable gain for the Waveform or Vector display to an integer value The minimum value of gain is 200 and the maximum value is 3000 GAIN lt WFM VEC VAR VALUE gain GAIN lt WFM VEC gt VAR VALUE lt WFM VEC gt and gain gain vec var value 950 gain vec var GAIN VECTOR VARIABLE STATE ON VALUE 950 WFM 601A WFM 601E amp WFM 601M User Manual Gain Commands GAIN LTNG VAR lt VERT HORZ gt STATE ON OFF Syntax Arguments Examples Returns Sets the variable vertical or horizontal gain ON or OFF for the Lightning display GAIN LTNG VAR VERT HORZ gt STATE ON OFF gt GAIN LTNG VAR VERT HORZ gt STATE lt VERT HORZ gt and lt ON OFF gt gain Itng var horz state on gain Itng var horz state GAIN LTNG VAR HORZ STATE ON gain Itng var horz GAIN LTNG VAR HORZ STATE ON VALUE 750 GAIN LTNG VAR lt VERT HORZ VALUE gain Syntax Arguments Examples Returns Sets the value of the variable vertical or horizontal gain for the Lightning display to an integer value between 200 minimum and 3000 maximum GAIN LTNG VAR VERT HORZ VALUE gain GAIN LTNG V
72. RC ERR SEC 0 status STATUS VALID FORMAT 50 AP CRC ERR SEC 1 CABLE STATUS VALID F1 AP CRC VALUE 10AB F2 AP CRC VALUE 10AB CHANGED SINCE RESET NES 0 DAYS ELAPSED TIME dU COMPONENT ANALOG 2 amp 4 Figure 3 31 Serial STATUS display for firmware V2 X The status screen provides three types of information The information at the top describes the type of detected signal including the number of lines data bits and audio channels The Stuck Bits readout shows the status of each bit in the data word with the LSB on the right Three characters indicate the status of each bit m for bits that change during a field m L indicates bits that stay low m H for bits that stay high The table on the Status screen contains EDH SMPTE RP 165 and CRC error detection results The elapsed time indicates the sample period for the error detection readout 3 45 Reference 3 46 Features of the Status Screen The Status screen features operate as follows m Signal Present Indicates when a valid serial digital signal is detected When the serial receiver detects a no signal condition the status will read SIGNAL MISSING m 525 625 Lines Gives the number of lines in the serial digital signal m 10 8 Bits Gives the number of data bits in the serial digital signal m Audio Gives the number of embedded audio channels detected in the serial digital signal When the serial
73. SSIBILITY OF SUCH DAMAGES Service Assurance If you have not already purchased Service Assurance for this product you may do so at any time during the product s warranty period Service Assurance provides Repair Protection and Calibration Services to meet your needs Repair Protection extends priority repair services beyond the product s warranty period you may purchase up to three years of Repair Protection Calibration Services provide annual calibration of your product standards compliance and required audit documentation recall assurance and reminder notification of scheduled calibration Coverage begins upon registration you may purchase up to five years of Calibration Services Service Assurance Advantages W Priced well below the cost of a single repair or calibration W Avoid delays for service by eliminating the need for separate purchase authorizations from your company m Eliminates unexpected service expenses For Information and Ordering For more information or to order Service Assurance contact your Tektronix representative and provide the information below Service Assurance may not be available in locations outside the United States of America Name VISA or Master Card number and expiration Company date or purchase order number Address Repair Protection 1 2 or 3 years City State Postal code Calibration Services 1 2 3 4 or 5 years Country Instrument model and serial number Phone Instrument purchase date E
74. ST ON OFF gt ROTEST ON OFF rotest off rotest on rotest ROTEST ON WFM 601A WFM 601E amp WFM 601M User Manual System Commands SNID Syntax Arguments Examples Returns Returns the waveform monitor serial number SNID None snid snid SNID B0123456 CALSignal ENable OFF ON Syntax Arguments Examples Returns In Waveform display turns ON OFF the internal calibrator signal CALSignal ENable OFF ON CALSignal ENable OFF ON gt cals en OFF cals CALSIGNAL ENABLE OFF WFM 601A WFM 601E amp WFM 601M User Manual C 53 System Commands C 54 WFM 601A WFM 601E amp WFM 601M User Manual D IK t Remote Command Processing Code The following code ensures that the waveform monitor does not drop any characters during remote command operations This procedure expects a character string to send and places to put two types of responses expected and unexpected wfmto601 c This module contains the processing functions required for a DOS or Windows based PC to communicate effectively with the WFM601x family of instruments This code provides an example of the message buffering required due to the lack of a hardware UART This module uses a DOS communications code library included as a part of the book C Asynch Manager copyright 1991 Blaise Computing Inc 819 Bancroft Way Berkeley CA 94701
75. Tek COMPONENT ANALOG 2 amp 4 C Figure 1 17 Arrowhead gamut display WFM 601A WFM 601E amp WFM 601M User Manual 1 23 Functional Check d Press the bezel button again to select the Diamond display mode e Check that the display looks like the Diamond gamut display in Figure 1 18 525 2 1 i 8 7 100 5 Mc 24 G B 4 50 3 Hl HL 2 DIAMOND 3 Tek COMPONENT ANALOG 2 amp 4 Kpg Figure 1 18 Diamond gamut display 11 Check the Digital Waveform display modes WFM 601M only a Press the DGTL WFM DGTL LIST button to select the Digital Waveform display mode The indicator next to DGTL WFM should light up b If the bezel button labeled VIDEO DATA does not have VIDEO selected press that bezel button to select VIDEO c Check that the display looks like the Video digital waveform display in Figure 1 19 1 24 WFM 601A WFM 601E amp WFM 601M User Manual Functional Check y 525 21 Y 840d T0pS DIV F1 50 EIE VIDEO 100 SMP 271 ACTIVE UPDATE FREEZE HEX DECIMAL BINARY 3 Tek COMPONENT ANALOG 2 amp 4 Kpg LINE SEL SAMPLE Figure 1 19 Video digital waveform d Press the bezel button again to select the DATA display mode e Check that the display lo
76. The library is freely redistributable as part of the product when you purchase the book Aside from purchasing its products Tektronix has no business relationship with Blaise and under no circumstances warrants this software for use to any particular purpose Use this code at your own risk FF F 0 F F F F F FF F F F F finclude asynch 1 h include lt ctype h gt ASYNC library constants define IO BUFSIZ 2300 define OKAY 0x600b Number of connection attempts to make to the instrument ui fdefine NUMBER OF RETRIES 2 Blaise Computing error code definitions not a complete list define A OK 0 Operation successful define INV PORT 1 Invalid or uninitialized port define NO PORT FOUND 6 Port not found at address define OUT Q FULL 7 Output queue is filled define IN Q EMPTY 10 Input queue is empty define TIMEOUT 12 Timeout waiting for event define CANCEL 13 Wait event cancelled by user WFM 601A WFM 601E amp WFM 601M User Manual C 55 Remote Command Processing Code C 56 Module WARNINGS these warnings indicate bad communications or invalid requests to the instrument define W INVALID RESP 1 Invalid response from instrument fdefine UNEXPEC RESP 2 Unexpected response from instrument sta int ini sta int reg reg if com for Local communications port tic int comPor
77. UIMENU commands and options command lt options gt Remarks STICKY FILTer CURsor LINESe Sets the selection to the named subsystem lect GAIN CONFIG when in the UIMENU mode The Sticky function is accessible from the front panel by pressing a menu button before pressing the CONFIG button PREset ON OFF Enables or disables UIMENU presets Use the PRESET commands to recall store and name presets CONFIG ON OFF Selects the CONFIG menu for display Use the CONFIGSEL command to select a particular display or mode to configure CONFIGFCT ON OFF Turns on or off the USER INTERFACE MENU also accessible from the bezel knob CONFIGSEL WFMVEC EY JIT Selects a category in the CONFIG menu SERIALARM GAM CAL This selection is equivalent to turning the bezel knob in the CONFIG menu Use the CONFIG command to enable the CONFIG menu CRTADJUST READ TRACE DISPLAY Enables the CRT adjustments on the current display if allowed Examples _uimenu preset off uimenu config on uimenu configsel wfmvec uimenu configfct on Returns uimenu UIMENU STICK Y FILTER PRESET OFF CONFIG ON CONFIGFCT ON CONFIGSEL WFMVEC CRTADJUST TRACE uimenu preset UIMENU PRESET OFF WFM 601A WFM 601E amp WFM 601M User Manual C 15 Cursor Commands Cursor Commands The commands in this section allow you to select and move the voltage and timing cursors on the waveform monitor They also allow you to make mea
78. User Manual Tektronix WFM 601A WFM 601E amp WFM 601M Serial Digital Component Waveform Monitors 071 0103 01 This document supports firmware version 1 00 and above Copyright Tektronix Inc rights reserved Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Printed in the U S A Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 TEKTRONIX and TEK are registered trademarks of Tektronix Inc WARRANTY Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of three 3 years from the date of shipment If a product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to
79. YPBPR d EFE PATTERN PBPR OFFSET cem JITTER Ere 24 SER ALARM 350 mV 2 FORMAT EAV SAV CALIBRATE PASS STRIP Tek COMPONENT ANALOG 2 amp 4 O Figure 3 11 Configure menu for WFM VEC showing the selection knob Turning the knob causes a selection box to scroll through the menu list The selections assigned to the bezel buttons change as you scroll through the list of Configure menus Press the CONFIG button again to remove the Configure menu 3 8 WFM 601A WFM 601E amp WFM 601M User Manual Reference WFM VEC COLOR BARS GAMUT GAMUT CHECK 75 100 EYE PATTERN WFM 601E and WFM 601M only MODE OFF CMPST JITTER WFM 601M only JITTER HPF OVERLAY RGB BOTH WFM AS SER ALARM MISSING VID 10 Hz 10 EYE ARM DIP RGB YPBPR FORMAT OFF ALARM 1kHz PBPR OFFSET CALIBRATE 10kHz CLOCK BW SCREEN P FULL FIELD 100kHz 10 Hz PIX MON a 9 CRC ERROR 100 Hz BOTH m OFF ALARM BEIDE 1kHz GAMUT IRE EAVSAY ACTIVE PIC SEC 100 110 MESI CRC ERROR OFF 120 181 OFF ALARM Dur FMT ERROR FORMAT OFF ALARM NTSC PAL AUTO MON OUT AS CAL SIG GBR YPBPR MEE STANDARD GAIN CAL 525 21 ON OFF 625 2 1 AUTO SYNC DIRECT AFC Figure 3 12 Map of functions available in the Configure menu Configure Menu Description The following list describes the items in each Configure menu WFM VEC Contains choices for the Waveform Parade Vector and Lightning video displays m COLOR BARS
80. You can set alarm limits for both the Diamond RGB display and Arrow head composite display The alarm can take the form of an alarm message in the lower left corner of the CRT or a flashing of the MON OUT signal To set either the RGB or composite alarm follow these steps 1 Press the CONFIG button and select the GAMUT menu 2 Select the type of GAMUT CHECK from these choices Wm CMPST composite for the Arrowhead display m RGB for the Diamond display RGB mode checks the R G and B signals for transitions below 0 mV and above 700 mV m BOTH enables RGB and CMPST gamut checks 3 Select the type of ALARM DISP display you want from m SCREEN places an error message at the lower left of the CRT m PIX MON flashes the analog output monitor signal in the area that exceeds the limits m BOTH enables both SCREEN and PIX MON alarm displays 4 Setthe adjustable limit cursor to 100 110 120 or 131 IRE for NTSC or 700 mV or 950 mV for PAL When an alarm condition occurs a message appears or the monitor flashes for at least one second In addition pin 16 of the Remote rear panel connector is pulsed low Refer to Remote Connector discussion on page 2 for more information WFM 601A WFM 601E amp WFM 601M User Manual 3 33 Reference Graticule Measurements The waveform monitor provides an internal etched graticule for waveform measurements The internal graticule scales are on the same plane as the CRT phosphor to reduce p
81. a cursor correlation between display modes on the WFM 601M RGB and composite Gamut checks with Diamond and Arrowhead displays Field line and word WFM 601M only select with readout and bright up of selected lines on Picture Monitor Out Y or G Channel WFM 601A WFM 601E amp WFM 601M User Manual 1 1 Getting Started Menus Calibrator Accessories Standard Accessories m SMPTE RP 165 standard EDH indicator for presence m Embedded Audio indentification m Analog audio Lissajous display on WFM 601A m Source signal level meter and cable length readout on the WFM 601E and the WFM 601M m Lightning and Vector displays m Reclocked Serial Component Digital output following A B switching m Video Reference Internal Serial Component signal follows switching or external composite An expanded feature set is available through the menus You select menu items with multi use bezel buttons and knobs When you select a menu item such as Voltage Cursors on screen labels show the current function of the bezel buttons and knobs The waveform monitors provide an internal calibrator signal to set both vertical and horizontal gain The calibrator signal is a 700 mV 100 kHz signal Press the CONFIG button and use the bezel knob to select the Calibrate menu Press the CAL SIG button to turn on the calibrator signal The waveform monitor is shipped with several standard accessories These standard accessories and any optional
82. aking connections to the input or output terminals of the product ensure that the product is properly grounded Do Not Operate Without Covers To avoid electric shock or fire hazard do not operate this product with covers or panels removed Use Proper Fuse To avoid fire hazard use only the fuse type and rating specified for this product Do Not Operate in Wet Damp Conditions To avoid electric shock do not operate this product in wet or damp conditions Do Not Operate in an Explosive Atmosphere To avoid injury or fire hazard do not operate this product in an explosive atmosphere Product Damage Use Proper Power Source Do not operate this product from a power source that Precautions applies more than the voltage specified Provide Proper Ventilation To prevent product overheating provide proper ventilation Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Symbols and Terms Terms in this Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life WFM 601A WFM 601E amp WFM 601M User Manual ix General Safety Summary A Certifications and Compliances CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Terms on the Product These terms may appear on t
83. an error message buffer To determine whether an error has been recorded send the query ESR If an error has been detected the waveform monitor will respond with a message similar to ESR 32 To get more information about the error send the query ALLEV The response to the ALLEV query will be similar to one of the error message types described in Table C 9 This query determines if the waveform monitor has recorded any command errors If ESR returns an error use the ALLEV query to determine the type of error recorded Table C 9 describes possible error messages displayed by the waveform monitor ESR None esr esr ESR 32 See Table C 9 for a list of possible command error reports returned by the ALLEV query This query is used to determine the type of command error reported by the waveform monitor Table C 9 describes a list of possible error messages returned by ALLEV To use ALLEV query using ESR to determine whether the waveform monitor has recorded any command errors If an error was detected use ALLEV to help you determine the possible cause of the error WFM 601A WFM 601E amp WFM 601M User Manual C 31 Error Commands C 32 Syntax Arguments Examples Returns The error messages displayed consist of three parts m ALLEV response number W A description of the error type W record of the command string in which the error was detected The description of the error type and the
84. arallax errors You can adjust the graticule and trace illumination in the CRT menu for viewing or photographing the display Figure 3 25 shows the etched graticule 8 7 c 100 Upper limit tor 75 color diff signals Center line for 75 and 100 50 color diff signals Mr 2 Lower limit for 7596 color diff signals 1___ 0 V horizontal reference gt r poop 1 mV scale lt 2 aa Tek COMPONENT ANALOG 2 amp 4 Figure 3 25 Waveform measurement graticule Vertical Scale 3 34 This etched scale facilitates direct Waveform and Parade measurements The vertical scale is marked in millivolts mV and extends from 300 mV to 800 mV in 100 mV increments There are three dashed lines on the graticule used to measure the color difference signals Pb and Pr The line at 50 amplitude is the center line for the color difference signal measurements The lines at 90 mV and 610 mV correspond to the peak excursions for 75 color difference signals 100 color difference signals extend from the baseline 0 V to 700 mV centered on the 50 graticule line WFM 601A WFM 601E amp WFM 601M User Manual Reference K Factor Graticule A special graticule located at the top of the etched graticule allows measurement of K Factor line time distortion Figure 3 26 shows the special graticule and how to align a 2T Ba
85. asurements use the EYE mode whenever possible Use EQ EYE when the EYE mode fails to provide a useful signal Clock BW Filters Both EYE pattern displays can attenuate low frequency jitter using one of three clock recovery filters Select from the 10 Hz 100 Hz and 1 kHz filters Use these Clock BW filters to separate the medium and high frequency jitter from low frequency jitter The filter frequencies indicate the 3 dB point To access the filters press the CONFIG button and select the EYE PATTERN menu The 10 Hz and 1 KHz filters allow jitter measurements according to the SMPTE RP 184 standard The selected clock bandwidth filter appears in a readout field directly below the horizontal deflection factor WFM 601A WFM 601E amp WFM 601M User Manual 3 19 Reference Trigger Modes Two trigger or sweep modes are available with the Eye display OVERLAY and 10 EYE OVERLAY In OVERLAY mode all bits of a serial word are overlaid at each eye location Because numerous transitions for the data bits are overlaid each eye crossing shows the timing jitter in the video system Figure 3 18 shows the Overlay Eye display Approximately three eyes are displayed and the horizontal scale is 1 ns div 100 mV DIV 1 nS DIV OVERLAY 10 Hz Figure 3 18 Overlay Eye display 3 20 WFM 601A WEM 601E amp WFM 601M User Manual Reference 10 EYE In 10 EYE mode every tenth bit of the serial signal appears
86. at a fixed location on the display Figure 3 19 shows the 10 EYE mode Approximately 10 eyes are displayed per horizontal sweep and the horizontal scale is 3 ns div In the 10 Eye more you can observe events that are correlated with the serial word rate or horizontal line rate In this mode you can also observe systematic errors that affect certain bits in the data word 100 mV DIV 3 nS DIV 10 EYE 10 Hz CORRER AAA JL ILI ILLA AL A Figure 3 19 10 EYE triggered display To select the trigger mode press the CONFIG button and use the bezel knob to select the EYE PATTERN menu Press the DISPLAY bezel button to select OVERLAY or 10 EYE The trigger mode is indicated by a readout in the upper left corner of the CRT The trigger modes are available with both EYE and EYE EQ displays Gain The calibrated vertical gain for the EYE and EQ EYE modes is 100 mV div You can expand the vertical scale by selecting X5 X10 or Variable gain The vertical scale is displayed in the upper left corner of the CRT screen Press the GAIN button to access the X5 X10 and Variable Gain gain selections When Variable Gain is enabled a gt appears in front of the deflection factor to indicate the uncalibrated condition WFM 601A WFM 601E amp WFM 601M User Manual 3 21 Reference 3 22 Eye Pattern Measurements This section describes how to measure parameters of the Eye pattern to verify standard signal spe
87. ax Arguments Examples Returns Sets the Serial Format display to the Status Format or Cable screens The STATUS screen includes information such as signal presence line rate and error rate The FORMAT screen displays the results of several data format checks The CABLE screen displays the calculated strength of the input signal and the cable length The CABLE argument is valid only with firmware V2 X and later With firmware V 1 X the cable and signal strength readouts are available on the STATUS screen SERial MENU STATUS FORM CABLE SERial MENU STATUS FORM CABLE menu serial serial menu form ser menu status ser menu SERIAL MENU STATUS WFM 601A WFM 601E amp WFM 601M User Manual C 11 Configuration Commands SERial DISPlay RGB YPbPr gt Syntax Arguments Examples Returns Sets the display to native YPbPr or transcoded RGB for the Waveform and Parade displays The monitor outputs are not affected This selection corresponds to the choices available under WFM AS in the CONFIG WFM VEC menu SERial DISPlay RGB YPbPr gt SERial DISPlay RGB YPbPr gt ser disp RGB SER DISP ypbpr ser disp SSERIAL DISPLAY YPBPR SERial MONitor lt GBR YPbPr gt Syntax Arguments Examples Returns C 12 Sets the format of the rear panel MONITOR OUTputs to YPbPr or GBR This selection corresponds to the choices available under MON OUT AS in the CONFIG FORMAT menu
88. b adjusts the horizontal gain To return the gain to its original calibrated setting press the RE SET V CAL or H CAL bezel buttons In addition the following software version information appears m Software Version Number The lower right corner of the CRT shows the version number for the instrument software preceded by a Coprocessor Code Version The lower right corner of the CRT shows the version number of the serial coprocessor code preceded by a The CRT menu provides control of trace parameters and readout intensity To access the CRT menu at any time press the MENU CRT button Press the top bezel button to access the Display Readout and Trace controls Use the assigned bezel knobs to adjust the display You can control the following functions from the CRT menu W Focus Sets the sharpness of the waveform trace m Scale Sets the intensity of the side lights that illuminate the etched graticule Intensity Sets the trace intensity or brightness separately from the readout m Readout Intensity Sets the readout intensity or brightness m Trace Rotation Adjusts the rotation of the trace Readout intensity can be turned below the minimum viewing level which makes all CRT menus disappear If this happens press the CRT menu button and note that the menu comes up at a reduced intensity Pressing the top CRT bezel button once moves the cursor to READOUT and reduces the intensity again At this WFM 601A WF
89. bezel button chooses between two displays Figure 3 13 shows the DATA mode Figure 3 14 shows the VIDEO mode with the same data values as those in Figure 3 13 The VIDEO mode groups the samples in the order in which they occur in the data stream C YC Y The label above the grouped list indicates this order 525 2 1 8 DAA Ft 80 i DATE 100 SMP1160 _2 _ ACTIVE 30D h ccm ee UPDATE 30D h 4 2FE h FREEZE P 32 h 50 3 2FD h 3D NEXT FIELD _ 374 h c E A eo DECIMAL BINARY 4 icem ger Tek COMPONENT ANALOG 2 amp 4 LINE SEL SAMPLE Figure 3 13 Example of the Digital List display 3 14 WFM 601A WFM 601E amp WFM 601M User Manual Reference Data Format Press the fourth bezel button to select the base used for displayed data from hexadecimal h decimal d or binary b The characters h d or b following the data indicates its base Q 525 2 1 8 F1 80 xit h VIDEO 100 SMP1160 2FE h UA ACTIVE 30D h 5 n UPDATE 30D h qui FE h FREEZE p 324 h 50 3 2FD h 2 TA h NEXT FIELD 374 h 364 h
90. bottom of the graticule Perfect monochrome signals appear as a thin vertical line Any deviation or bending off the center line indicates a color variation from the monochrome setup of the display monitor Luminance gain alone can be measured more accurately in either the Waveform or Parade display modes Interchannel Timing Measurement The scale sequence of dots between the green and magenta targets provides a way to check interchannel timing CH 2 to CH 1 and CH 3 to CH 1 or signal delay If the color difference signal is not coincident with luminance the transitions between color dots will bend The amount of this bending represents the relative signal delay between luminance and the color difference signal The upper half of the display measures the Pp to Y timing while the bottom half measures the P to Y Timing If the transition bends in toward the vertical center or black region the color difference signal is delayed with respect to luminance If the transition bends out toward white the color difference signal is leading the luminance signal Pr and Pb Gain Measurement The horizontal deflection of the top half of the display is an indication of the Pp gain and the lower half indicates the P gain If the color bar signal dots are within the horizontal dimensions of the appropriate graticule targets the Py and gains are within 2 of the correct amplitude Since the vertical and horizontal dimensions of the graticule target boxes
91. chanical Shock Non operating 50 g 1 2 sine 11 ms duration 3 shocks per surface 18 total Transportation Humidity Table A 5 Physical characteristics Qualified under NSTA Test Procedure 1A Category Il 24 inch drop Proper operation at 95 0 596 Relative Humidity Do not operate with visible moisture on the circuit boards Characteristic Standard Dimensions Height 133 4 mm 5 25 in Width 215 9 mm 8 5 in Depth 460 4 mm 18 125 in Weight Net 3 8 kg 8 Ibs WFM 601A WFM 601E amp WFM 601M User Manual Shipping 7 2 kg 15 7 lbs approximate A 9 Appendix A Specifications Table A 6 Safety standards Characteristic U S Nationally Recognized Testing Laboratory Listing Canadian Certification European Union Compliance Standard ANSI ISA 82 01 Safety Standard for Electrical and Electronic Test Measuring Controlling and Related Equipment 1994 CAN CSA C22 2 No 1010 1 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Low Voltage Directive 73 23 EEC Amended by 93 68 EEC IEC1010 1 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Additional Compliance UL3111 1 Standard for Electrical Measuring and Test Equipment IEC1010 1 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Table A 7 Safety certification compliance Charac
92. cifications for serial digital transmission The measurements discussed here are amplitude aberrations rise time and jitter Figure 3 20 illustrates the initial equipment connections Waveform Monitor rear panel Serial source 75 terminator SERA Output Loop through input Figure 3 20 Connections for measuring a serial source Setup for Measurements Perform the following steps in preparation for the Eye pattern measurements Figure 3 20 illustrates the equipment connections 1 Connect the serial source to the monitor with a 75 Q cable two meters or less in length Use high quality low loss coaxial cable such as Belden 8281 2 Connecta 75 Q terminator with at least 25 dB return loss to 300 MHz on the other end of the loop through input Set the serial source to output a 100 Color Bar signal Press the EYE JITTER button to select the Eye Pattern display Press the GAIN MENU button and select 1X vertical gain e cis ce Adjust the vertical position so the bottom of the waveform rests on the 1 V line Measuring Amplitude Measuring the signal amplitude can help you determine if the signal amplitude is too low due to cable losses or other system problems This procedure shows you how to measure the signal amplitude using both the graticule and the Voltage Cursors To measure the signal amplitude follow these steps 1 Perform the initial settings for Eye measurement
93. cluding a sample jitter waveform The jitter mode converts any phase modulation to amplitude and plots it against time An unfiltered version of the jitter waveform appears on the JITTER OUT BNC connector on the rear panel Jitter measurements appear in the Jitter measurement box The left measurement is Timing or wideband peak to peak jitter from 10 Hz to 5 MHz The right measurement gives filtered peak to peak jitter measured after the high pass filter The selected high pass filter is indicated above the filtered jitter measurement jitter 0 1 UI DIV 2 FIELD 8 10HZ High pass filter 1 JITTER m TIMING 1OHZHPFY _ _ 7 m 0 160 0 170 Jitter out of eu high pass filter A 3 Wideband p p Jitter waveform after the a high pass filter iS 2 _ a Tek COMPONENT ANALOG 2 amp 4 Figure 3 27 Example of the Jitter display WFM 601A WFM 601E amp WFM 601M User Manual 3 37 Reference 3 38 Jitter Demodulation Jitter Measurement Configuration The Jitter measurement uses a demodulator method to determine signal jitter The serial clock is recovered from the input signal and multiplied demodulated against a very stable oscillator which translates any phase modulation jitter into a DC value The resulting DC values plotted against time is proportional to jitter in the serial signal This jitter waveform is passed thr
94. compares CH 1 to CH 3 TN lt TN dii Figure 3 8 Typical Bowtie display on the waveform monitor WFM 601A WFM 601E amp WFM 601M User Manual 3 5 Reference 3 6 Timing Measurement Relative Gain Check The timing measurement is based on alignment of the center marker and the null point at the center of the waveform The generator provides a center marker which is centered on the null point when interchannel timing is correct A shift of the null to the left or right indicates a difference in the relative timing If the null shifts two full time markers the relative timing error between channels would be 40 ns If the null is to the left of the center marker the color difference channel is advanced relative to the luminance channel When either of the nulls is shifted to the right that color difference signal is delayed relative to the luminance channel In Figure 3 9 the chrominance channel CH 3 Pr is advanced relative to the luminance channel by 20 ns Shifted null point Figure 3 9 Bowtie waveform showing a timing error in CH 3 Although you can use Waveform or Lightning displays to determine channel timing the Bowtie method provides better resolution of channel timing and is the easiest to use The bowtie measurement provides a method to determine whether the relative channel gain is correct If the gains are not equal the center null point will not be a complete null Figure 3 10 shows a Bowtie di
95. cted field rate 60 Hz or 50 Hz m SYNC Selects either Direct or AFC synchronization of the internal timing The Direct mode uses the 27 MHz word clock as extracted from the serial digital signal This mode passes any signal jitter on to other internal operations and to the MON OUT video signals The AFC mode uses a phase locked loop circuit to produce a stable clock The phase locked loop averages small phase differences in the clock The AFC mode is best in most situations Use the Direct mode when large low frequency jitter is present in your system WFM 601A WFM 601E amp WFM 601M User Manual 3 11 Reference CRT Settings How to Recover from Minimal Readout Intensity 3 12 CALIBRATE Allows minor adjustment to the vertical and horizontal gain calibration prior to making amplitude measurements To adjust gain you need a 700 mV 100 KHz signal Use a known external reference signal or the internal calibrator signal Selections for the CALIBRATE menu are only present when in the Waveform or Parade display modes W CAL SIG Turns on or off the internal 700 mV calibrator signal The calibrator signal is synchronized in order to provide an accurate 100 kHz timing standard If the calibrator signal varies significantly from 700 mV when RESET V CAL is not visible then the waveform monitor may require calibration W GAIN CAL Enables or disables the V CAL and CAL controls The V CAL knob adjusts vertical gain and the H CAL kno
96. e after pressing the CRT MENU button in the Picture display DISPlay PIXC contrast range DISPlay PIXC contrast range displ pixc 700 display pixc DISPLAY PIXCONTRAST 700 DISPlay PIXB blackness range C 28 Sets the blackness level of the Picture display The blackness value is the level of the picture that is considered to be the darkest black The upper limit is 300 and the lower limit is 300 A setting less than zero can produce a light picture while settings greater than 100 can produce a dark picture This setting corre WFM 601A WFM 601E amp WFM 601M User Manual Display Commands Syntax Arguments Examples Returns sponds to the BLACK LEVEL adjustment available when the CRT MENU button is pressed in the Picture display DISPlay PIXB blackness range DISPlay PIXB blackness range displ pixb 100 display pixb DISPLAY PIXBLACKNESS 100 DISPlay TRACEROT lt tracerotate gt Syntax Arguments Examples Returns Allows adjustment of trace rotation The argument lt tracerotate gt is an integer from 2047 to 2047 The median value represents a trace rotation angle of approximately 0 degrees Each extreme value rotates the trace by about 15 degrees DISPlay TRACEROTate lt tracerotate gt DISPlay TRACEROTate lt tracerotate gt disp tracerot 100 display tracerot DISPLAY TRACEROTATE 100 DISPlay SCALEillum lt scale gt Syntax
97. e gamut 3 31 NTSC and PAL graticules 3 31 setting format 3 32 Audio analog signals 3 1 display 3 1 gain 3 4 graticule calibrations 3 4 Lissajous patterns 3 1 measuring phase error 3 4 Serial format selection 3 46 Audio display 1 26 2 3 Automatic format checks 3 44 Bowtie Display 3 5 relative gain check 3 6 timing measurement 3 6 Buttons functional overview 2 2 C Cabinetizing 1 8 Cabinets 1 5 WFM 601A WFM 601E amp WFM 601M User Manual 1700F00 1 3 blank panel 1 10 Cable Length measurement 3 49 measurement for firmware V 1 X 3 47 Cable Screen 3 49 CABLE TYPE for firmware V1 X 3 47 serial format selection 3 50 CAL SIG configuration menu 3 12 Calibrate CONFIG menu 3 12 gain 3 12 Calibration 3 7 horizontal gain 3 7 vertical gain 3 7 Calibrator calibration signal 1 2 Certifications and Compliances A 11 Changed Since Reset Serial format selection 3 46 Check after shipment 1 15 Cleaning the instrument D 3 Cleaning Fan Filter D 1 CLEAR MENU 2 5 Clock BW in Configure EYE PATTERN menu 3 10 Color Bars in Configure WFM VEC menu 3 9 Command set C 1 Component video Glossary 1 Composite setting Gamut alarm 3 33 Composite gamut checking 3 32 Diamond Display 3 31 Composite video Glossary 1 CONFIG menu map of functions 3 8 3 9 Configuration menu Calibrate CAL SIG 3 12 Calibrate GAIN CAL 3 12 Configure menu Calib
98. e is the only signal required for black and white pictures For color systems it is obtained as a weighted sum Y 0 3R 0 596 0 11B of the R G and B signals MSB Most Significant Bit The highest weighted bit or signal line Nonlinear Distortion Refers to distortions which are amplitude dependent NTSC National Television System Committee The organization which developed the television standard currently in use in the United States Canada and Japan Now generally used to refer to that standard PAL Phase Alternate Line Refers to one of the television systems used in Europe and many other parts of the world The phase of one of the color difference signals alternates from line to line to help cancel out phase errors Pb A color difference signal used in component video systems It is derived by subtracting the B blue signal from Y Pr A color difference signal used in component video systems It is derived by subtracting the R red signal from Y Receiver Equalization Refers to recovering the data signal after cable loss The signal is boosted to its original standard amplitude RF Radio Frequency In television applications RF generally refers to the television signal after the picture carrier modulation process RGB Red Green and Blue Also referred to as GBR in SMPTE specifications The three primary colors used in color television s additive color reproduc WFM 601A WFM 601E amp WFM 601M User Manual Gl
99. ee Table of Contents General Safety Summary eeeeeeeeenn nnn ix Preface RE Getting Started Getting Started Ve 4 sisie Sale IU fete eee Ree 1 1 Product Description i uk AREE Reemi peg e Mex eid e e dha ae 1 1 nivecrg RR 1 2 Installation rh hr thin oss er hr eh en US V drea 1 5 Included Accessories 1 5 Hardware Installation 1 5 Connecting POWer Ret qu eR MP I RHENO SR NIRE A Se 1 11 Installing the Waveform Monitor in a Serial Video System 1 12 Functional Check e ele Le I er ener Rr ne rre 1 15 Required Equipment ccc cece eee men 1 15 Initial Equipment Connections 8 1 16 Functional Check Procedure 1 17 Operating Basics Functional Overview 2 1 Front Panel Overview 2 1 Using the Menus i ca ees Re ERA ARE 2 5 Rear Panel Connectors 2 6 Reference Referenc uer ax Rua e dern Bie reae ERE EE ES 3 1 Audio Display WFM 601A Only ssssssee eh 3 1 Bowtie Display ere RR RR RUE ake es ee 3 5 Calibration 2 serbe RR ADR BG eS oan ee ees 3 7 Configure M
100. en the set screws WFM 601A WFM 601E amp WFM 601M User Manual re AREE Glossary a i Glossary Accuracy The closeness of the indicated value to the true value Bandwidth The range of frequencies over which signal amplitude remains constant within some limit as it is passed through a system Baseband Refers to the composite video signal as it exists before modulating the picture carrier Composite video distributed throughout a studio and used for recording is at baseband Bowtie Display A display used to assess relative timing and gain through a three channel component system Color Difference Signals Signals used by color television systems to convey color information in such a way that the signals go to zero when there is no color in the picture R Y B Y I and are all color difference signals for NTSC system U and V are color difference signals for the PAL system The component system color difference signal are Y Pp Pg as specified by SMPTE and CCIR standards Color Gamut The area between minimum and maximum reproducible limits for elements of the color difference or RGB signals Component Video Video which exists in the form of three separate signals all of which are required in order to completely specify the color picture For example R G and B or Y R Y and B Y Composite Video A single video signal containing all of the necessary information to repro duce a color picture Created by addin
101. enus cn eee Pe Aa aN eR ae Ra 3 8 CRT S ttngs feet eere ERREUR hte ce BG ee Oe BE ees 3 12 CUPS OTS de eR RR beth es Be CE NR eR 3 13 Digital List WFM 601M Only 0 0 cece eens 3 14 Digital Waveform WFM 601M Only 3 16 Eye Display WFM 601E WFM 601M 3 19 Filter Menu o eR SR CREE AREA E ee ates 3 27 Gain Men cse er DERE REI UR RUE ERRARE 3 28 Gamut Displays iim RR RR UR eR UR ee E 3 29 Graticule Measurements ei apa Ra a ar E a hh 3 34 Jitter Measurement Display WFM 601M 3 37 Ine Select o ERA ROS a Hed oU RU GRE 3 39 Multiple Display ic iR Rex Re AE xA GE 3 41 Parade Display sarirane teva neta RET RERUM EU IR M a 3 41 Picture Display ERR XR eid Kem ate IRSE ERE Ga 3 42 Presets e Re ER e AMO tu edem 3 43 en me dia e ana bacs ads SoA 3 44 WFM 601A WFM 601E amp WFM 601M User Manual i Table of Contents Serial Status i egies RR EE p exa med bac estre eius 3 44 SWEEP eo Ei E Re ac meUE Cels 3 52 Vector Display Modes 0 0 3 53 Mideon zin Sates a AE at si eae lk gash gea ek eu cess 3 58 Waveform Display s kaei aran ora cence ai 3 58 Appendices Appendix A A 1 Appendix B Remote Operation B 1 RS
102. erence Picture Display The Picture display shows a monochrome version of the video signal carried by the serial digital input signal Figure 3 30 shows an example of a color bar signal The Picture display lets you verify the signal source When Line Select is active the highlight or bright up of the selected line appears as it would on an external analog monitor Figure 3 30 Example of the Picture display To adjust the Picture display press the CRT MENU button and use the CON TRAST and BLACK LEVEL bezel knobs 3 42 WFM 601A WFM 601E amp WFM 601M User Manual Reference Presets The Preset menu makes it possible to recall front panel settings from a list of 10 stored front panel presets You can store up to nine front panel presets at these locations The remaining one is factory programmed to help calibrate the waveform monitor Preset Menu Press the PRESET MENU button to access the list of the 10 presets The list appears over a bezel knob below the CRT Rotating this knob moves the highlight box up or down the list Once the desired preset is selected you can take one of four actions RECALL Sets the front panel to the stored settings previously stored into that memory location STORE Wipes out the currently stored settings in the selected memory location and replaces them with the current front panel settings RENAME Allows you to change the name of the current preset selection using a set of alp
103. f sweep SWEEP TIMING ONEFIELD MAGNIFY OFF WFM 601A WFM 601E amp WFM 601M User Manual C 49 System Commands System Commands Using the commands in this section you can make the following changes to the waveform monitor W Select menus needed to change various parameters of the waveform monitor Select an appropriate filter for the Waveform and Parade displays m Enable and disable the AFC and ECHO functions the readout alignment markers and the internal calibration signal Access the serial number for the waveform monitor MENU FILTer CURsor LINESelect CONFIG GAIN CRT CLear SERial gt Displays the named menu or clears the displayed menus In the WFM and PARade displays displays the filters menu In the Eye display it indicates the filter in use at the top right corner of the screen Syntax MENU lt FILTer CURsor LINESelect CONFIG GAIN CRT CLear SERial gt MENU Arguments FILTer CURsor LINESelect CONFIG GAIN CRT CLear SERial gt Examples menu lines menu config menu ser menu cl Returns menu MENU CLEAR C 50 WFM 601A WFM 601E amp WFM 601M User Manual System Commands FilTer FLAT DIFF LP Syntax Arguments Examples Returns ON OFF gt Syntax Arguments Selects a filter setting for the Waveform and Parade displays Table C 13 describes the options for this command FLAT DIFF
104. front panel settings The letter n in the argument lt PRESETn gt represents a number between 1 and 9 The waveform monitor can store 9 presets in addition to the FACTORY preset PREset STORE lt PRESETn gt lt PRESETn gt preset store preset1 None WFM 601A WFM 601E amp WFM 601M User Manual Preset Commands PREset NAMES lt PRESETn gt any string Syntax Arguments Examples Returns Sets the name of the specified Preset The name is limited to ten alphanumeric characters You can use the 25 pin REMOTE connector on the rear panel to save or recall Presets The appropriate pin is grounded to select the front panel setup stored in that preset location Grounding pin 25 with any one of the other preset pins stores the current front panel setup into that selected PRESET location Refer to Appendix B for more information on using the REMOTE connector PREset NAMES lt PRESETn gt any string lt gt any string preset names preset5 jit meas preset names preset1 clock meas None WFM 601A WFM 601E amp WFM 601M User Manual C 47 Sweep Commands Sweep Commands The commands in this section allow you to manipulate the sweep characteristics of the waveform monitor SWEEP TIMING ONEL TWOL ONEF TWOF gt Syntax Arguments Examples Returns C 48 Sets the sweep rate to one line 5 usec div two line 10 usec div one field or two fields for dis
105. g quadrature amplitude modulated R Y and B Y to the luminance signal for NTSC systems or U and V to the luminance signal for PAL systems CRC Cyclic Redundancy Code series of transmitted bits used to enhance the error detection capabilites of a system dB Decibel A logarithmic unit used to describe signal ratios For voltages dB 20 Logio V1 V5 WFM 601A WFM 601E amp WFM 601M User Manual Glossary 1 Glossary Glossary 2 Diamond Display A simplified vector display for RGB signals that defines the valid gamut limits in the form of two diamonds Distortion See harmonic distortion EDH Error detection and handling Supports the standard SMPTE RP 165 which proposes a technique for recognizing inaccuracies in the serial digital signal Frame Contains all the information required for a complete picture For interlaced scan systems there are two fields in a frame Gamma A measure that compares the contrast in the original and reproduced television picture Since picture monitors have a nonlinear relationship between the input voltage and brightness the signal must be correspondingly enhanced to nullify the nonlinear distortion Gamma correction is always done at the source camera in television systems the R G and B signals are converted to R y G y and B y Values of about 2 2 are typically used for gamma Gamut See Color Gamut GBR See RGB Graticule The scale which is used to quantify the displa
106. gtl dgtl DGTL VIDMODE VIDEO FREEZE ON BASE HEX REGION ACTIVE DATA VO 528 V1 528 V2 528 V3 532 V4 532 V5 532 V6 532 V7 SELECTED 536 V8 536 V9 536 V10 536 V11 540 12 540 V13 540 V14 540 DGTL VDATA SELECTED 532 CB 536 Y0 536 CR 536 Y1 536 WFM 601A WFM 601E amp WFM 601M User Manual Digital Waveform and Digital List Commands DGTL REGion WFM 601M Only Syntax Arguments Examples Returns Returns the region of the video signal where the data cursor is located Possible regions include active picture horizontal blanking and vertical blanking DGTL REGION None dgtl region DGTL REGION ACTIVE DGTL DATA WFM 601M Only DGTL DATA V NOTE The values displayed when using this command are accurate only when the waveform monitor is in the Data List mode DGTL DATA returns 15 data samples centered on the currently selected sample see LINESelect commands on page C 42 This region data corresponds to the data seen on the Digital Video display DGTL DATA V returns only the numbered sample from the 15 displayed counting from the top down Sample 7 is always the sample selected by the data cursor This sample corresponds to V7 on the display Change the display mode to Digital List using the DISPlay SINGLE display mode command page C 25 before using this command WFM 601A WFM 601E amp WFM 601M User Manual C 21 Digital Waveform and Digital List Commands Syntax Argume
107. h m SERIAL SIGNAL LEVEL Indicates the amplitude of the signal source relative to the 800 mV standard The value 0 dB indicates a good 800 mV signal A value of 3 dB would indicate a source with 0 707 of the expected amplitude To get an accurate measurement you must select the correct CABLE TYPE for your installation m APPROXIMATE CABLE LENGTH Indicates the length of the cable between the signal source and the waveform monitor The waveform monitor calculates the cable length based on the signal power at the input To get an accurate measurement you must select the correct CABLE TYPE for your installation WFM 601A WFM 601E amp WFM 601M User Manual 3 47 Reference 3 48 FORMAT Screen WFM 601E and WFM 601M Only The FORMAT screen presents the results of six signal format checks given check reports back either OK or ERROR The waveform monitor continuously performs the format checks The results are not saved or latched once an error condition clears the indicator returns to OK The FORMAT screen is identical for V1 X and V2 X firmware except for the CABLE selection for the DISPLAY bezel button SIGNAL PRESENT 525 LINES _ 10BTS 225555 k 100 DATA RANGE OK SAV PLACEMENT OK DISPLAY LINE LENGTH OK STATUS FIELD LENGTH _ OK FORMAT 50 CABLE ANC CHECKSUM OK ANC PARITY OK end RAE E Tek
108. h SMPTE 259M and CCIR 656 Input Type Passive loop through 75 compensated Input Level 800 mV peak to peak 1096 Input voltages outside this range might cause reduced receiver performance Return Loss Power on gt 25 dB 1 270 MHz channels on or off Power off gt 15 dB 1 270 MHz Insertion Loss x 196 Transmission Bandwidth 50 kHz 300 MHz 1 0 dB 3 dB at not less than 500 MHz Loop through Input Isolation gt 50 dB to 300 MHz Serial Receiver Equalization Range Serial Video Output follows SER A B channel selection Format Output Level Return Loss Eye Pattern Display WFM 601E and WFM 601M Only Proper operation with 19 dB loss at 135 MHz using coaxial cable having 1 F loss characteristics 800 mV launch amplitude and 200 meters 655 feet of Belden 8281 coaxial cable 800 mV p p 10 into 75 Q load 270 Mbit s component complies with SMPTE 259M and CCIR 656 Internal adjustment can change output to less than 600 mV and greater than 1000 mV 15dB 1 270 MHz Type Equivalent time sampler Bandwidth 50 kHz to 450 MHz 3 dB to Low frequency 3 dB point is 500 Hz 1 dB Rise Time 500 ps 20 80 775 ps 10 90 Aberrations 10 800 mV step Time Base Jitter 200 ps peak to peak WFM 601A WFM 601E amp WFM 601M User Manual Appendix A Specifications Table A 1 Electrical specifications cont
109. ha numeric characters and symbols RECOVER Returns to the previously selected choice For example assume that Preset 1 was the previous choice and Preset 8 has now been selected but not recalled Pressing RECOVER returns to Preset 1 To restore the Preset menu press the PRESET menu button again To turn off the Recall function press CLEAR MENU or the PRESET menu button Rename Submenu Use the Preset Rename submenu to rename one of the nine Presets 1 Rotate the Location bezel knob to select a character to change in the current name 2 Rotate the Letter bezel knob to scroll through the list of available characters The Location character changes as you scroll through the character list The blank character follows the letter Z 3 When you are done press the ACCEPT button to lock the selection 4 Press the RETURN bezel button to return to the PRESET menu WFM 601A WFM 601E amp WFM 601M User Manual 3 43 Reference Ref Mode Serial Status 3 44 The REF button selects the synchronization reference The default reference is the currently selected serial digital input SER A or B Press the REF button once to select the external reference input EXT REF The EXT indicator located just above the REF button lights when the external reference is selected The EXT REF input is a 75 loop through input The external reference signal can be a black burst or composite video signal Press the REF button again to select t
110. has occurred Bit Activity Indicates if any of the 10 data bits are always high or low during the active picture for an entire field Line Rate Indicates whether the signal is 525 or 625 line Format Errors Signal Lost Digital Data Value Cursor and Listing WFM 601M Only Digital Waveform Data Mode Video Mode Digital List External Reference Input Warns that a serial signal format error has occurred for the following error types m SAV placed incorrectly relative to EAV Line length error Field length error Reserved values used improperly ANC data checksum error ANC data parity error Reports absence of the serial video signal Non interpolated waveform display Cursor identifies selected sample value hexidecimal decimal binary Cross hair cursor inserted on picture monitor output shows selected line and sample Vertical and horizontal shift of picture monitor output when selecting blanking interval line and sample values Displays interleaved data stream sequentially with 31 samples per screen width Cursor identifies selected sample value Displays Y Cb Cr data streams separately Channels are selected with VIDEO IN buttons Cursor identifies the selected sample value Sequential list of sample values in table format Cursor identifies selected sample VIDEO mode identifies samples as Y Cb Cr Analog composite video or black burst Maximum Operating Input Voltage 1 8 V to
111. hase detection process used by the WFM 601A WFM 601E amp WFM 601M User Manual Reference genlock can add noise which results in jitter in the 10 Hz to 1 kHz range By using the appropriate BW Limit filter genlock jitter can be included or rejected from a jitter measurement Observing Word Correlated Behavior The Eye Pattern display in 10 Eye mode allows you to analyze word correlated jitter When video is serialized a 270 MHz serial clock is derived from the 27 MHz rate parallel word clock Often there is slight phase modulation of the serial clock between the transitions of the parallel clock producing jitter at data bit transitions This jitter is not random it is correlated to the parallel word rate Also the video pattern applied to the serializer changes at a 27 MHz rate or at an integer fraction of this rate Any video pattern related effects in the serial system typically appear at fixed data bit locations with respect to the parallel word In the Eye display10 EYE mode the trigger is on the parallel word boundaries with 10 Eyes shown per sweep Parallel word and tv line correlated behavior can be seen in this mode If a serial system has a disturbance that appears related to video patterns either word or tv line use the 10 EYE mode in either EYE or EQ EYE to analyze the problem Use the Line Select function to place the area of interest in the Eye pattern display Filter Menu The Filter menu provides selection of inpu
112. he R Y signal after a weighting factor of 0 877 has been applied The weighting is necessary to reduce peak modulation in the composite signal Vectorscope A specialized oscilloscope which demodulates the video signal and presents a display of R Y versus B Y in NTSC systems or V versus U in PAL systems The angle and magnitude of the displayed vectors are respectively related to hue and saturation Vertical Interval The synchronizing information that appears between fields and signals the picture monitor to return to the top of the screen to begin another vertical scan Waveform Monitor A specialized oscilloscope that plots voltage versus time to evaluate television signals See Luminance WFM 601A WFM 601E amp WFM 601M User Manual Index Index A Aberrations serial channel measurements 3 23 Accessories 1 2 optional accessories 1 3 Options 1 3 standard included 1 2 Accuracy Glossary 1 Active PIC CRC Error in Configure SER ALARM menu 3 11 AFC synchronization selection 3 11 Air filter part number 1 2 ALARM 2 4 Alarm based on serial format checks 3 44 Gamut alarm 3 33 ALARM DISP in Configure GAMUT menu 3 10 Amplitude serial channel measurements 3 22 Analog Audio see Audio 3 1 ANC Checksum Serial format checks 3 49 ANC Parity Serial format checks 3 48 AP CRC using to measure error rate 3 51 AP CRC ERR SEC Serial format selection 3 46 Arrowhead Display composit
113. he TIMING measurement is the raw jitter and the ALIGNMENT is the jitter remaining after the high pass filter JIT HPFIL Use the command JIT UNITS to pick the units of measure JITter ALIGNMENT TIMING gt ALIGNMENT TIMING jit timing jit timing JITTER TIMING 0 10 UI WFM 601A WFM 601E amp WFM 601M User Manual C 41 Line Select Commands Line Select Commands The commands in this section allow you to select the part of the video signal you wish to display and measure Use the command MENU LINESelect page C 50 to enable the Line Select functions LINESelect command options Table C 10 describes the LINESelect commands and the argument options associated with each command These commands correspond to the selections available when you press the LINE SELECT button Syntax LINESelect command options LINESelect lt command gt Arguments lt command gt options Table C 10 LINESelect commands and options command lt options gt Remarks MODE ON OFF Selects whether the Line Select mode is ON or OFF FMODE lt ALL TWO gt Selects the mode that displays one line out of field 1 or field 2 or the same line in both fields FIELD F1 F2 gt Selects from which field the Line Select sample is chosen Select the line with the command LINES NUMBER and the sample with LINES SMPL DISP H1 H15 SAMPLE Selects the Line Select mode from single line H1 or a
114. he Y or G output and is controlled in the CONFIG menu SERIAL OUT Provides a reclocked version of the selected signal input SER A or SER B JITTER OUT WFM 601M only Provides a 75 Q output signal from the jitter demodulator The Jitter high pass filter JITTER HPF selection does not affect this signal You can view the jitter waveform on the waveform monitor using the JITTER display mode Multi Pin Connectors Two multi pin connectors provide control using a PC or other controller Refer to Appendix B for pin assignment information for these connectors RS 232 This 9 pin subminiature D type connector provides a serial interface for remote control and calibration REMOTE This 25 pin subminiature D type connector provides limited remote control functions WFM 601A WFM 601E amp WFM 601M User Manual 2 7 Functional Overview 2 8 WFM 601A WFM 601E amp WFM 601M User Manual HEU SR Reference Reference This section provides detailed information on the waveform monitor functions The topics are organized alphabetically Most topics are named after the front panel labels and button names Audio Display WFM 601A Only Lissajous Patterns The Audio display allows you to measure stereo audio phase errors of 20 kHz analog stereo audio signals Connect the audio signals to the Remote Connector described in Appendix B on page B 2 Correct phasing between two audio channels is quickly verified by the degree of separation
115. he internal synchronization reference and turn off the EXT indicator The Serial format display performs automatic checks on the serial digital signal and provides descriptive status of the input signal Two Serial format screens STATUS and FORMAT display information about the serial signal In addition the front panel EDH indicator lights when the input signal contains valid EDH information in accordance with the SMPTE RP 165 standard Press the SERIAL button located below the Alarm indicator to view the Serial format screens Figure 3 31 shows the STATUS screen Press the DISPLAY bezel button to select either the STATUS FORMAT or CABLE screen V1 X firmware instruments do not have the CABLE selection Press the SERIAL button to exit the Serial format display WFM 601A WFM 601E amp WFM 601M User Manual Reference STATUS Screen WFM 601A WFM 601E amp WFM 601M User Manual The Status screen presents a signal description the results of EDH checks and the cable length Figure 3 31 shows an example of the Status screen displaying a signal with a 525 line rate 10 bit data and 16 channels of embedded audio Figure 3 32 shows the STATUS screen for firmware V1 X instruments SIGNAL PRESENT AUDIO 525 LINES 12345678 10 BITS 910111213 14 15 16 p 100 FORMATERROR OTHER ANC DATA STUCK BITS L L L L DISPLAY FF C
116. he lower bezel button to change from FLAT mode to EYE EQ mode You should hear the click of a relay and the display will change slightly as the equalization circuit modifies the waveform d Press the bezel button again to return to the FLAT mode 100mV DIV 1nS DIV OVERLAY Tek COMPONENT ANALOG 2 amp 4 Figure 1 13 Eye Pattern display mode 8 Check the Jitter display mode WFM 601M only a Press EYE JITTER button to select the Jitter display mode The indicator next to JITTER should light b The Jitter display should resemble that shown in Figure 1 14 Your jitter readout values may differ from those in Figure 1 14 Jitter values are affected by the quality of the signal source and connecting cables 1 20 WFM 601A WFM 601E amp WFM 601M User Manual Functional Check 1 10yS DIV AO 10HZ JITTER P P 100 TIMING 10 7 _ 0 100 0 1001 H 50 J 1 N 1 o Tek COMPONENT ANALOG 2 amp 4 Figure 1 14 Jitter display mode 9 Check the Vector display modes a Press the VECTOR GAMUT button to select the Vector mode The indicator next to VECTOR should light b Check that the display looks like the Vector display pictured in Fig ure 1 15 c Ifthe display does not appear as illustrated ensure that the generator is set to output
117. he product DANGER indicates an injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product Symbols on the Product The following symbols may appear on the product A AN m DANGER Protective Ground ATTENTION Double High Voltage Earth Terminal Refer to Manual Insulated Refer to the specifications section for a listing of certifications and compliances that apply to this product WFM 601A WFM 601E amp WFM 601M User Manual a l ed Preface This manual describes the capabilities of the WFM 601A WFM 601E and WFM 601M Serial Digital Component Waveform Monitors and their features and specifications To get started refer to the first section Getting Started This section shows you how to install and configure the waveform monitor for use in your operating environment For detailed information about a feature refer to the third section Reference About This Manual This manual is composed of the following sections m Getting Started provides a product description installation instructions and a functional check procedure Standard and optional accessories are also listed Wm Operating Basics briefly describes the front panel controls and rear panel connections m Reference provides an alphabetized reference for all display modes and co
118. hecked in this procedure Therefore a minimum amount of test equipment is required WARNING To avoid personal injury be sure that a cabinet is installed on the instrument checks are made with the cabinet installed The cabinet an optional accessory must be installed on the instrument to avoid personal injury maintain proper environment for the instrument keep dust out and provide proper EMI shielding If the Functional Check reveals improper operation or an instrument malfunction check the connections to and the operation of the test equipment If it is operating normally and the failure is repeatable send the waveform monitor to qualified service personnel for repair or adjustment For a complete check of the instrument performance refer qualified service personnel to the Performance Verification Procedure in the Service manual The following equipment is required to perform this procedure m Digital Component Television Signal Generator 1 Provides 10096 Color Bar signal For example The Tektronix TG 2000 Signal Generation Platform with a DVGI1 module m Function generator 1 for WFM 601A only For example Tegam FG 503 Coaxial Cable 1 42 inch 75 Q RG6 cable Tektronix Part No 012 0159 00 or equivalent m 75 Q Terminator 1 End line Tektronix Part No 011 0163 00 WFM 601A WFM 601E amp WFM 601M User Manual 1 15 Functional Check Initial Equipment Connections Figure 1 10 shows h
119. ightning graticule showing interchannel timing errors 3 56 Figure B 1 Pin assignments for the RS 232 connector B 1 Figure B 2 Pin assignments for the REMOTE connector 2 Figure 0 1 Graticule light bulb replacement D 2 WFM 601A WFM 601E amp WFM 601M User Manual Table of Contents List of Tables Table 3 1 List of measured and actual rise times for the waveform monitor 3 25 Table A 1 Electrical specifications A 1 Table A 2 CRT display cc cece ccc cece cece cece eens A 8 Table A 3 AC power source A 9 Table A 4 Environmental characteristics A 9 Table A 5 Physical characteristics _ A 9 Table A 6 Safety standards A 10 Table A 7 Safety certification compliance A 10 Table A 8 Certifications and compliances A 11 Table B 1 Remote connector pin assignments and functions B 2 Table C 1 Symbols used in this section C 1 Table C 2 SERial ALarm commands and options C 14 Table C23 UIMENU commands and options C 15 Table C 4 Voltage and Timing Cursor positioning commands and Options cce eco e e Rr ue eee e eger C 18 Table C 5 Voltage and Timing Cursor tracking commands and Options m
120. ignal data FLAT or perform receiver equalization EQ EYE on the signal before display Use the cursors to measure parameters of the Eye display Refer to page 3 22 for instructions on using the cursors to measure the Eye display EYE and EQ EYE Modes The EYE and EYE EQ modes allow measurement in short and long transmission line environments respectively On the WFM 601E press the EYE EQ EYE button to select the EYE or EQ EYE modes On the WFM 601M press EYE JITTER button to select the EYE mode Press the lower bezel button to alternate between the EYE and EQ EYE modes If the EYE EQ EYE selection is not visible when the EYE display is active press the CLEAR MENU button The EYE mode directly displays the serial signal applied to the rear panel loop through input This mode is best for directly monitoring a serial digital source or a short length of cable When monitoring a signal near the end of a long cable run the EYE mode might show what appears to be a band of noise Use the EQ EYE mode to restore the signal shape and amplitude before display The EQ EYE mode is best used to measure signals degraded by transmission through a long cable The EQ EYE mode applies receiver equalization to the serial signal to restore it Because equalization enhances the signal and causes signal peaking it is best used to check signal continuity You should regard EQ EYE display measurements as uncalibrated and merely qualitative For the best me
121. in the pattern shown on the display Amplitudes are verified by the direction of the pattern s axis Audio amplitude and phase is monitored using a calibrated X Y Lissajous display Using this display you can verify that the program audio will be properly reproduced on both monaural and stereo receivers Any oscilloscope including a vectorscope that has identical X and Y amplifiers can make accurate stereo audio phase measurements When identical signals of equal amplitude are input the display pattern produced will be a Lissajous pattern The opening of the Lissajous pattern is relative to the phase error between the signals The remainder of this section discusses some of the Lissajous patterns generated by the waveform monitor Figure 3 1 depicts an input audio signal from one channel The figure on the left depicts input from the X channel only which produces a line pattern along the X axis of an XY plot Similarly a line pattern along the Y axis of an XY plot indicates an input audio signal from the Y channel only as shown in the figure on the right Figure 3 1 A signal from one channel only WFM 601A WFM 601E amp WFM 601M User Manual 3 1 Reference 3 2 Figure 3 2 depicts an input audio signal in which the X and Y channels are in perfect phase and have equal amplitudes X ao js Figure 3 2 X and Y signal in phase with equal amplitudes Figure 3 3 depicts an input audio signal in which the X and Y channels a
122. ith the Cp and C channels The Y sample is aligned or co sited with Cp and channels and its data cursor appears in line Use the Video mode when selecting samples in the active picture area The DATA mode displays the samples in sequence as they are received Cb Y Cr Y Use the Data mode to view sync words and SAV and ancillary data Output Monitor Signals The data cursor creates intersecting horizontal and vertical highlighted or bright up lines on the analog video output to indicate where in the video signal the data cursor is located When you move the data cursor to the end of a line the output picture shifts to show you the horizontal sync region Likewise when you move to the beginning or end of a frame the vertical sync region shifts to the center of the screen As you scroll through line samples watch the location of the highlighted line on the output monitor By doing so you can correlate changes in the video signal with changes in the digital data values To use the cross hair cursor in the horizontal and vertical blanking regions set EAV SAV to PASS in the Configure WFM VEC menu DATA 274 h 10pS DIV F1 176 100 SMP 543 tpe ACTIVE gt r a a N J Tek COMPONENT ANALOG 2 amp 4 Kpg LINE SEL SAMPLE Figure 3 16 Digital Waveform display in DATA mode WFM 601A WFM 601E amp WFM 601M User Manual
123. ker or blivit shows the selected sample on the waveform On the output monitor highlighted horizontal and vertical lines intersect at the selected sample In the SAMPLE mode the output monitor display shifts to show the sync region when your selection approaches either end of a line or field Selections in the sample mode are correlated across most display modes such as Digital Waveform Digital Data Parade and Waveform display For example you can align the blivit to the SAV sample in the Parade mode then switch to the Digital Waveform mode and see the SAV value in the data stream WFM 601A WFM 601E amp WFM 601M User Manual 3 39 Reference 3 40 A special condition exists in 15H mode when you select the PARADE or WAVEFORM displays The first line in the display corresponds with the LIN SEL readout The second is from the second line and the third is from the third line in the sequence See Figure 3 28 For more information on how line select affects the Parade mode refer to page 3 41 Line 1 Line 2 Line 3 A K A 3 Tek COMPONENT ANALOG 2 amp 4 Figure 3 28 Parade display of YPP shown in Line Select mode 15H only The CLEAR MENU button removes the readout associated with the line selection but the line number readout and Line Sel control assignment remain active on screen To restore the menu readout press the LINE SEL menu button again To
124. knob indicates its current function The outside knobs are permanently assigned to control vertical and horizontal trace position The five bezel buttons along the right side of the CRT have multiple functions Your selection of DISPLAY modes MENU functions or on screen items from the displayed menus determine the current function of each button A label adjacent to each button indicates its current selection The buttons either step through a list of two or more items or turn a function on or off Allows you to turn on or off CH 1 Y R CH 2 Pp G and CH Pg B and to select the serial digital signal from input SERIAL A or B At least one input and one channel are always on The two Sweep buttons select the waveform monitor sweep rate and horizontal magnification LINE FIELD Toggles through four sweep rates 1 Line 5 us div 2 Line 10 us division 1 Field and 2 Field Selections are limited in some display modes MAG Provides horizontal magnification of waveform signals Use the Horizontal Position bezel knob to move left or right on through the waveform Displays a status screen providing EDH error statistics and format error reporting including ANC data errors and line field length errors This area includes two indicators EDH DET Lights up when the incoming serial digital signal has the SMPTE RP165 specified Error Detection and Handling EDH signal ALARM Lights up when a serial video data or format error occurs
125. l div 2096 3 dB Bandwidths Bandwidth Selection 10 Hz to 5 MHz 1 kHz to 5 MHz 10 kHz to 5 MHz 100 kHz to 5 MHz Jitter Output WFM 601M Only 120 mV UI x 10 into 75 load Signal Level amp Cable Length Detector WFM 601E and WFM 601M Only Cable Length Accuracy Resolution Dynamic Range Source Signal Level Accuracy Resolution Dynamic Range Cable Types Video Error Detection Type 10 meters 10 of reading Belden 8281 cable 5 meters 0 to 400 meters Belden 8281 cable 0 5 dB for cable lengths from 0 100 meters Belden 8281 0 25 dB 3dB Supported cable types Belden 8281 Belden 1694A Belden 1505A Active picture and full field with field rate resolution Uses EDH Error Detection and Handling system based on CRC check word Complies with SMPTE RP165 Reporting Means Front panel ALARM indicator rear panel TTL line and CRT readout Error Statistics Asynchronous errored seconds Active picture and full field statistics are separately compiled A 4 WFM 601A WFM 601E amp WFM 601M User Manual Appendix A Specifications Table A 1 Electrical specifications cont Characteristic Diagnostics Embedded Audio Performance requirement Reference information Identifies the presence of up to 16 channels of AES EBU digital audio Ancillary Data Identifies the presence of ancillary data other than audio and EDH and indicates if a checksum error
126. le 3 54 how Pb and Pr create display 3 53 in Functional Check 1 21 Lightning Display 3 55 phase measurement 3 54 timing measurement 3 55 vector timing measurement 3 55 Vectorscope Vector Display 3 53 Version determining software version 3 12 Vertical Gain 3 28 gain calibration 3 7 Vertical scale waveform graticule 3 34 Video mode in Digital List display 3 14 mode in Digital Waveform display 3 16 viewing with Picture Display 3 42 VIDEO IN 2 4 Serial Inputs 3 58 setting mode in Configuration menu 3 58 Voltage cursors 3 13 W Waveform Digital Waveform display 3 16 jitter 3 38 Parade Display 3 41 viewing jitter 3 37 Waveform Display 3 58 filter selection 3 27 Waveform display using Line Select 3 58 Waveform graticule WFM 601A WFM 601E amp WFM 601M User Manual Index horizontal scale 3 36 Word rate trigger 3 21 vertical scale 3 34 WFM AS in Configure WFM VEC menu 3 9 WFM VEC configure menu 3 9 Y Word correlated behavior serial channel measurements 3 27 YPbPr Parade 3 41 WFM 601A WFM 601E amp WFM 601M User Manual Index 9 Index Index 10 WFM 601A WFM 601E amp WFM 601M User Manual
127. le under GAMUT in the CONFIG GAMUT menu Use the command DISPlay SINGLE GAMut to enable the GAMUT display ARROWhead LIMIT PAL MV 7001 MV 950 ARROWhead LIMIT LIMIT PAL MV 7001 MV 950 arrow limit PAL mv 950 arrow limit pal MV 700 arrow limit pal ARROWHEAD LIMIT PAL MV 700 ARROWhead LIMIT NTSC IRE 100 110 120 IRE 131 Syntax Arguments Examples Returns Sets the NTSC gamut limit on the ARROWHEAD graticule The gamut limit triggers an alarm when exceeded by the input signal These selections correspond to the choices available under GAMUT in the CONFIG GAMUT menu Use the command DISPlay SINGLE GAMut to enable the GAMUT display ARROWhead LIMIT NTSC IRE 100 11 110 11 120 IRE 131 ARROWhead LIMIT LIMIT NTSC lt IRE_100 IRE_110 IRE_120 IRE_131 gt arrow limit ntsc ire_120 arrow limit ntsc ire 131 arrow limit ntsc ARROWHEAD LIMIT NTSC IRE 131 WFM 601A WFM 601E amp WFM 601M User Manual C 7 Configuration Commands ARROWhead FORMat NTSC PAL AUTO Syntax Arguments Examples Returns Sets the video format for the ARROWHEAD graticule Use the command DISPlay SINGLE GAMut to enable the GAMUT display Use the command ARROW LIMIT NTSC or ARROW LIMIT PAL to set the gamut alarm setting ARROWhead FORMat NTSC PAL AUTO ARRPWhead FORMat lt NTSC PAL AUTO gt arrow form ntsc arrow form ARROWHEAD FORMAT
128. lor bar The dimension of each target box represents 2 14 mV of a 700 mV amplitude The dashed vector line labeled I indicates the saturation or amplitude of flesh tones The displayed amplitude allows comparison to the Color Bar targets 525 2 1 10pS DIV 8 aes 100 7 6 a 50 1 Tek COMPONENT ANALOG Y 2 amp 4 Figure 3 37 Vector display graticule Phase and Amplitude Measurements With the Vector display you can check the encoder accuracy for both phase and amplitude errors When taking measure ments make certain your source signal amplitude matches the Vector graticule For example if the source is a 75 Color Bar signal then choose the 7596 graticule in the WFM VEC Configuration menu The current graticule selection appears beside the graticule Composite signals include a sample of the subcarrier burst with each line of video to synchronize the decoding of color information The Vector display is based on the accuracy of the color burst sample Any magnitude or phase variance in the color bar vectors is measured by the distance of the vector dots from the appropriate targets WFM 601A WFM 601E amp WFM 601M User Manual Reference Vector Timing Measurements In the composite domain the transitions between the vector end points display timing differences But because these timing differences include
129. ls a Press the CRT MENU button The display controls should appear as shown in Figure 1 12 b Check that you can position the waveform by adjusting the VERT and HORIZ POS bezel knobs Leave the signal horizontally centered and with the waveform bottom on the 0 V line 525 2 1 10pS DIV 8 c ES 7 DISPLAY 100 Feet nee READOUT a TRACE 2 RD TEST ON OFF 3 Tek COMPONENT ANALOG 2 amp 4 Focus SCALE INTENSITY Figure 1 12 Channel 1 of a color bar signal with CRT adjustments visible c Use the bezel knobs under the CRT to adjust the focus brightness of the graticule scale and intensity of the trace Adjust the display controls to the desired viewing levels d Press the top bezel button to select READOUT Adjust the readout intensity to the desired level e Exit the CRT menu by pressing the CRT button The changes made while the menu was displayed remain in effect WFM 601A WFM 601E amp WFM 601M User Manual 1 19 Functional Check 7 Check the Eye Display mode WFM 601E and WFM 601M only a Press the EYE JITTER button to select the Eye display mode The indicator next to EYE should light b Check that the waveform is triggered to produce an Eye display like that in Figure 1 13 The degree of noise on the Eye waveform is determined by the video generator and connecting cables c Press t
130. lt OFFION gt e C 49 System Commands C 50 MENU lt FILTer CURsor LINESelect CONFIG GAIN CRT CLear NIME C 50 WFM 601A WFM 601E amp WFM 601M User Manual iii Table of Contents Glossary Index FILTer lt FLAT DIFFILP gt eeseeeee RII C 51 AFC SON TORES E esee aede iade C 51 PORT ECHO lt ONIOFF gt he 52 ROTEST ON VORR u Lise xe UE aede Race 52 SNIJ vesper ee aU ARD iL aide deae Bi C 53 CALSignal ENable OFFION eseeeeeee C 53 Remote Command Processing Code C 55 Appendix D User D 1 Cleaning or Replacing the Fan Filter D 1 Fuse Replacement sarioa Re ate oen ERG CRURA RA eee ug D 1 Graticule Light Replacement D 2 leaning axes ees Rte ia ROT RET AUR C RU RE eat D 3 Replacing the CRT Filter cora ee raa AAAA ARA T AA IA D 3 WFM 601A WFM 601E amp WFM 601M User Manual Table of Contents List of Figures Figure 1 1 Figure 1 2 Figure 1 3 Figure 1 4 Figure 1 5 Figure 1 6 Figure 1 7 a routing switcher Figure 1 8 return loss Figure 1 9 return loss Figure 1 10 Figure 1 11 Figure 1 12 Figure 1 13 Figure 1 14 Figure 1 15 Figure 1 16
131. m indicator to light The front panel Alarm light can be activated by up to four different serial video conditions Press the adjacent bezel buttons to turn these alarms on or off When an alarm condition occurs the Alarm light stays on for a minimum of one second If selected alarm conditions occur at a frequency greater than once per second the Alarm light stays on continuously When any of the following conditions are enabled and a condition occurs the alarm indicator turns on m MISSING VID The input serial signal level drops below a preset threshold determined by the serial receiver m FULL FIELD CRC ERROR The transmitted cyclical redundancy checksum CRC does not match the actual CRC for the last video field W ACTIVE PIC CRC ERROR The transmitted CRC does not match the actual CRC for the last active picture region m FMT ERROR A serial format error occurs FORMAT Selects the format of the picture monitor out signal and the scanning standard expected by the waveform monitor m MON OUT AS Configures the analog component picture monitor out signal as either Y Py Pr or as GBR Composite sync is added to the Y or G channel m STANDARD Selects the scanning standard from either 525 2 1 or 625 2 1 that the waveform monitor expects at the SER A and B inputs This choice affects the monitor sweep rates and the line selector In AUTO mode the monitor selects either 525 or 625 line operation based on the dete
132. med only by qualified service personnel Instructions for interior maintenance are provided in the Service manual Replacing the CRT Filter A smoke gray filter covers and protects the face of the CRT If the filter becomes damaged replace it by following these steps 1 Turn off the Power switch and disconnect the AC line cord 2 Using the Allen wrench loosen the set screws in the five knobs below the CRT then remove the knobs WFM 601A WFM 601E amp WFM 601M User Manual D 3 Appendix D User Service Insert a small straight blade screwdriver into the recessed area on the right or left side of the panel Pry gently until the panel snaps out of the front panel frame See D 1 for panel and recess location Remove the two Torx screws that fasten the bezel to the waveform monitor Grasp the bottom of the bezel and pull out and upward to remove the bezel from the instrument Two hinges at the top of the bezel hold it in place Once the bezel is at a 45 angle with the front panel they disengage Remove the damaged filter out the back of the bezel piece Snap the new filter into place on the back side of the bezel Position the ridged side of the filter towards the CRT Replace the bezel and bezel screws Tighten the screws Be careful not to overtighten them Place the panel below the CRT and press on both the right and left sides of the panel until it snaps into place Replace the five knobs below the CRT and tight
133. ming Match Sync Amplitude Accuracy Y at 5 75 MHz lt 10 ns Pp and Pg at 2 75 MHz lt 20 ns Y to Pg and Y to Pg 5 0 ns 300 mV 1096 Analog sync is inserted on Y channel only G channel only in RGB mode Sync to Video Timing Return Loss Table A 2 CRT display Characteristic CRT Viewing Area Accelerating Potential Trace Rotation Range Graticule A 8 Performance requirement gt 1 from horizontal 525 line rate 9 037 us 0 050 us 625 line rate 9 777 us 0 050 us 50 kHz to 5 MHz 40 dB Reference information 80 x 100 mm Horizontal 12 5 divisions Vertical 1 19 V Nominally 13 75 kV Total adjustment range is typically gt 8 Internal with variable illumination WFM 601A WFM 601E amp WFM 601M User Manual Appendix A Specifications Table A 3 AC power source Characteristic Electrical Rating Supply Type Supply Connection Power Consumption Table A 4 Environmental characteristics Characteristic Vibration Reference information 90 250 V 50 60 Hz 1 5 A maximum Continuous range from 90 to 250 VAC Single Phase Detachable cord set 115 VA 75 watts Description Standard Military Specification Mil T 28800D Paragraph 1 2 2 Class 3 Reference information 5 minutes at 5 15 Hz with 0 060 inch displacement 5 minutes at 15 25 Hz with 0 040 inch displacement 5 minutes at 25 55 Hz with 0 020 inch displacement Me
134. mitted data 4 DTR DTE readly 5 Signal ground Communication parameters 6 DCR DCE readly Baud 9600 7 RTS Request to send Data bits 8 8 CTS Clear to send Stop bits 1 9 Not connected Parity None Flow control Xon Xoff Figure B 1 Pin assignments for the RS 232 connector Remote Connector The rear panel REMOTE connector is a 25 pin D type connector that allows low level remote control and audio channel inputs Use the RS 232 interface for control using SCPI commands sent from a PC controller Preset Control The Remote connector provides control of Presets and monitoring of line select and video alarm events Eight of the Presets stored front panel settings can be stored or recalled remotely WFM 601A WFM 601E amp WFM 601M User Manual B 1 Appendix B Remote Operation When STORE pin 25 is grounded along with one of the preset pins the current front panel settings are stored at the selected Preset location Line Select Strobe Pin 15 outputs an active low TTL pulse during selected lines when in Line Select modes Use this signal as a trigger for a logic analyzer or oscilloscope Serial Video and Gamut Pin 16 outputs an active low TTL level whenever the front panel ALARM light Alarm is illuminated or when a gamut alarm occurs You must enable the gamut alarms using the Configure menu See pages for 3 10 and 3 11 for more information on enabling the Gamut and Serial alarms Remote Connector Pin Pin assignments fo
135. model m Shows one line of a field or frame A horizontal line on the output monitor signal marks the selected line m 15H Displays 15 successive lines m Sample WFM 601M only Picks a particular sample in a horizontal line and indicates it with a visible marker on the line Cursors Cursors are available to measure time and amplitude differences Gain Horizontal and vertical magnification are available by pressing the MAG and GAIN buttons Magnification is also valid during cursor measurements 3 58 WFM 601A WFM 601E amp WFM 601M User Manual Appendices Qn Appendix A Specifications Table A 1 lists the Electrical specifications for the WFM 601A WFM 601E and WFM 601M Serial Digital Component Waveform Monitors Performance Requirements are generally quantitative and can be tested by the Performance Verification Procedure in the Service Manual Reference information describes useful operating parameters that have typical values These parameters are not directly checked in the Performance Verification Procedure Table 8 lists the EMC compliance specifications The Performance Requirements listed in the electrical specification portion of these specifications apply over an ambient temperature range of 0 C to 440 C The rated accuracies are valid when the instrument is calibrated at an ambient temperature range of 20 C to 30 C after a warm up time of 20 minutes
136. mposite Limit Detection Level Accuracy PAL values in parenthesis Bowtie Mode Positive detection level 735 mV 7 mV nominally 105 of legal RGB Negative Detection level 35 mV 7 mV 2 IRE 100 IRE and 131 IRE 2 700 mV Detection level 102 396 of cursor level GBR Deflection axis indicated Y is displayed vertically is displayed horizontally on top half of display Pris displayed horizontally on bottom half of display Color bar black is positioned in the center of 7 5 IRE box within lt 25 box width 2 at 100 110 120 131 IRE 700 and 950 mV Detection level can be set to 100 110 120 or 131 IRE 700 or 950 mV PAL Common Mode Rejection Ratio gt 34 dB at 2 5 MHz Accuracy 3 Interchannel Timing Match 2 0 Picture Monitor Outputs Signal Format EBU N10 or RGB menu selectable WFM 601A WFM 601E amp WFM 601M User Manual A 7 Appendix A Specifications Table A 1 Electrical specifications cont Characteristic Active Video Accuracy WFM 601M WFM 601E and WFM 601A Performance requirement 700 mV 1 peak to peak mode Typically 700 mV 1 peak to peak mode Reference information Typically 2 for RGB mode Black Blanking Output Level 0 mV 35 mV Frequency Response Y 105 75 MHz 1 Pg and to 2 75 MHz 1 Non Linearity x 0 5 Group Delay Error Interchannel Ti
137. ms can be ordered with the monitor or purchased through a Tektronix field office or distributor When ordering include both the name and part number if available of the option WFM 601A WFM 601E and WFM 601M Service Manual 070 9836 X X Provides module level troubleshooting information plus information to help identify components such as schematics component locaters and a complete parts list Front Panel Cover The front panel cover protects the display face from damage and dust 1700F00 Plain Cabinet This rack mount cabinet is half rack width made of durable metal and painted silver gray Ventilating holes in the top bottom and sides of the cabinet help dissipate heat 1700F02 Carrying Case This portable cabinet is similar to the 1700F00 but it has rubber feet a carrying handle a flipstand and a front cover 1700F05 Side by Side Rack Adapter The 1700F05 allows you to mount two half rack width instruments in a standard 19 inch rack WFM 601A WFM 601E amp WFM 601M User Manual 1 3 Getting Started 1700F06 Blank Panel When you use only one side of a 1700F05 enclosure insert 1700F06 Blank Panel in the unused side to improve appearance and air flow 1700F07 Utility Drawer When you use only one side of a 1700F05 install the 1700F07 utility drawer in the unused side to provide storage and improve appearance and air flow The drawer opens and closes freely unless latched for transport 1 4 WFM 601A 6
138. n all four sides WFM 601A WFM 601E amp WFM 601M User Manual 1 5 Installation 29 289 3 38 ZsssHHHSS Figure 1 1 Dimensions of the 1700F00 plain cabinet The optional 1700F00 cabinet is the basic element for all of the cabinets The 1700F02 Portable carrying case is an enhanced version of the 1700F00 cabinet as is the 1700F05 side by side rack mount assembly All cabinets are available from your Tektronix representative 1 6 WFM 601A WFM 601E amp WFM 601M User Manual Installation The portable cabinet 1700F02 is shown in Figure 1 2 The 1700F02 has a handle four feet and a flip up stand The mounting hole sizes and spacing are different from those of the 1700F00 Zzsssssc Figure 1 2 1700F02 portable cabinet WFM 601A WFM 601E amp WFM 601M User Manual 1 7 Installation Installing the Waveform Secure the waveform monitor in a cabinet using two 6 32 Pozidrive screws Monitor in a Cabinet Figure 1 3 shows the location of these screws on the rear panel CAUTION Do not carry a waveform monitor in a cabinet without installing the rear panel mounting screws Without the mounting screws there is nothing to keep the waveform monitor in its cabinet Cabinet securing Screws Figure 1 3 Rear view of the waveform monitor in a 1700F02 cabinet 1 8 WFM 601A WFM 601E amp WFM 601M User Manual Installation Rack Adapter
139. nds for instrument response ai iwait al comPort 30 19L amp portStatus cancelFunc Get the instrument echo character x libError rdch al comPort amp recvChar amp iq size amp portStatus On any error bad cable return error xj if libError A OK C 58 WFM 601A WFM 601E amp WFM 601M User Manual Remote Command Processing Code 1f no character is present i e no echo response then resend the dropped character But if number of retires has been exceeded then bail out if libError IN Q EMPTY if iSendAttempt gt NUMBER OF RETRIES strcpy expectedResp NADA printf nNo Response getch return libError break else return libError Everything is Fine if sendChar recvChar Advance the port message string portMsg t now that we have a successful echo reset the send attempt counter X iSendAttempt 0 if recvChar n If this was n expect a trailing r if libError iwait al comPort 20 191 amp portStatus cancelFunc A OK return libError Get the instrument echo character if libError rdch al comPort amp recvChar amp iq size amp portStatus A OK return libError Check if we failed to get a trailing return n if recvChar r return W INVALID RESP Break to send next character break Instrument returned an unrelated character
140. nector pin assignments B 2 description B 1 rear panel overview 2 7 Remote Commands C 1 AFC C 51 ALLEV C31 ARROWhead FORMat C 8 ARROWhead LIMIT NTSC C 7 ARROWhead LIMIT PAL C 7 buffering code C 55 CALSignal ENable C 53 Index 6 CURsor CONTROL C 17 CURsor SELect C 16 DGTL settings C 20 DGTL BASE C 24 DGTL DATA C21 DGTL FREEZE C 23 DGTL REGion C 21 DGTL VDATA C22 DGTL VIDmode C 23 Display positioning commands C 44 DISPlay FOCUS C 30 DISPlay INTENSITY C 26 DISPlay INTENSITY READ 27 C 28 DISPlay PIXB C 28 DISPlay PIXC C 28 DISPlay SCALEillum C 29 DISPlay SINGLE C 25 DISPlay TRACEROT C 29 Errors messages C 31 ESR C31 EYe CLOckhpf C 34 EYe DISPlay C 33 EYe MODE C 33 C 51 GAIN W V STATE C 35 GAMut ALarm DISPlay C 9 GAMut ALarm TRIGger C 9 GAMut GRATicule C 8 INput CHANnel C 39 INput PBPROFFSet C 39 INput SOUrce C 38 Jitter magnitude query C41 JITter HPFILter C 40 JITter UNITS C 40 LINESelect commands C 42 Marker cursor control C217 Menu selection commands C 50 NTSC or PAL setting C 10 PORT ECHO C 52 PREset NAMES C 47 PREset REcall C 46 PREset STORE C 46 REFErence MODE C 6 ROTEST C 52 Serial number query C 53 SERial ALarm C 13 SERial DISPlay C 12 SERial EAVSAV C 13 SERial MENU C 11 SERial MONitor C 12 SLM CABle 3 SLM LENGTH C 5 WFM 601A WFM 601E amp WFM 601M User Manual Index SLM LEVEL
141. nfigurable features of the waveform monitor Appendices provides additional information including the specifications remote control interfaces and maintenance procedures Related Manuals The following related document is also available m The WFM 601A WFM 601E and WFM 601M Service Manual 070 9836 X X describes how to service the waveform monitors This optional manual may be ordered separately Complete and mail the Warranty Reply Card packaged with this manual to ensure that you receive notifications of firmware or hardware upgrades WFM 601A WFM 601E amp WFM 601M User Manual xi Preface Contacting Tektronix Product For application oriented questions about a Tektronix measure Support ment product call toll free in North America 1 800 TEK WIDE 1 800 835 9433 ext 2400 6 00 a m 5 00 p m Pacific time Or contact us by e mail tm_app_supp tek com For product support outside of North America contact your local Tektronix distributor or sales office Service Contact your local Tektronix distributor or sales office Or visit Support our web site for a listing of worldwide service locations http www tek com For other In North America information 1 800 TEK WIDE 1 800 835 9433 An operator will direct your call To write us Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 xii WFM 601A WFM 601E amp WFM 601M User Manual Getting Started Getting Started This section presen
142. nge sets the CHANGED SINCE RESET flag to Yes The elapsed time counter indicates the length of time since the flag was last reset to No The flag indicates only that one or more errors occurred WFM 601A WFM 601E amp WFM 601M User Manual 3 51 Reference Sweep 3 52 Comparison of the Two Methods Of the two methods described above the EDH system is the most powerful First it works with any video program material since the source end CRC is calculated on a field by field basis It does not matter if the source is a fixed pattern test signal or moving pictures Thus EDH can monitor error rate while your facility is in service Second the error information gathered by the waveform monitor is the most comprehensive when using EDH with errored seconds readouts for both the active picture and full field The big disadvantage of EDH is that it requires calculation and insertion of the CRC at the source At present not many equipment vendors support EDH The AP CRC Value method does not require any special signal insertion at the source and therefore gets around the problem of poor support for the EDH system But its limitation is that it works only with fixed pattern signals such as those from a test signal generator This precludes its use for monitoring operating video systems Also the AP CRC Value method only indicates if there were zero Or more errors The SWEEP buttons set the sweep rate time div for the horizontal scale and
143. nts Examples Returns DGTL DATA DGTL DATA V Include the letter V followed by an integer 0 14 for the line number 7 argument disp single dlist dgtl data v7 dgtl data v7 DGTL DATA V7 536 DGTL VDATA WFM 601M Only Syntax Arguments Examples Returns C 22 NOTE The values displayed when using this command are accurate only when the waveform monitor is in the Digital Waveform mode Returns the four demultiplexed data samples grouped with the currently selected sample see LINESelect commands on page C 42 The returned data corre sponds to the data group containing the data cursor on the Digital Video display Change the display mode to Digital Waveform DISP SINGLE DWFM on page C 25 before using this command DGTL VDATA None disp single dwfm dgtl vdata dgtl vdata DGTL VDATA SELECTED 536 CB 536 Y0 536 CR 536 Y1 536 WFM 601A WFM 601E amp WFM 601M User Manual Digital Waveform and Digital List Commands DGTL VIDmode VIDEO DATA WFM 601M Only Syntax Arguments Examples Returns Selects whether to display the raw data as a linear data sequence or as groups of four color difference values as they appear in the demultiplexed data Cb Y Cr Xs DGTL VIDmode VIDEO DATA DGTL VIDmode VIDEO DATA dgtl video video dgtl vid DGTL VIDMODE VIDEO DGTL FReeze ON OFF WFM 601M Only Syntax Arguments Examples Returns Select
144. o be active at the same time The Waveform or Parade can be displayed with either Vector Lightning or Diamond PICTURE Displays the video signal source When Line Select is on the selected line is highlighted to identify where it is in the video picture BOWTIE Displays a bowtie test signal to determine timing differences between the three component signals Y Pp and The external video source must generate a Bowtie test signal DGTL WFM WFM 601M only Displays the displays digital word values as a waveform The data values are not interpolated to generate the waveform DGTL LIST WFM 601M only Displays the sequential data values in a list Data may be in linear data sequence or as groups of four values as they appear in the multiplexed data stream Cp Y Cg Y AUDIO ANALOG Displays the stereo analog audio input as a Lissajous pattern The size of the WFM 601A Only opening in the pattern is relative to the phase error between the X and Y audio channels The Lissajous pattern will take one of three general forms a line an ellipse or a circle WFM 601A WFM 601E amp WFM 601M User Manual 2 3 Functional Overview 2 4 Bezel Knobs Bezel Buttons VIDEO IN SWEEP SERIAL REF Reference MENU The center three knobs located below the CRT have multiple functions Your selection of DISPLAY or MENU functions or items from on screen menus determine the current function of each knob A label adjacent to the
145. ocols use the retry program provided The symbols used in the descriptions of the remote commands are shown in Table C 1 Table C 1 Symbols used in this section Meaning Group one element is required Group elements are optional OR separates a list of anguments The commands in this section are arranged alphabetically by groups of similar commands Commands with similar syntax are explained in tables with argument options and comments about each command Examples of possible command strings and responses are then listed below the tables The rest of the commands are described individually with examples of syntax and typical usage given for each command In the following descriptions the capitalized letters in the Syntax descriptions are the minimum letters necessary for the waveform monitor to recognize the command Commands and arguments are not case sensitive Most commands have a query form Generally you can query at any point along a command string back to the root but you can not query arguments In the following command descriptions queries are given below the command syntax WFM 601A WFM 601E amp WFM 601M User Manual C 1 Appendix C Remote Command Set in the Syntax sections Query examples and typical responses are given in the Response sections C 2 WFM 601A WFM 601E amp WFM 601M User Manual Cable Measurement Commands Cable Measurement Commands The commands in this section provide control
146. oduce good signal transitions with a minimum of overshoot and ringing Automatic equalizer circuits in receivers may be sensitive to aberrations greater than 10 To measure aberrations perform the following steps 1 2 Perform the initial settings for Eye measurements described on page 3 22 Enable the Voltage Cursors Place one cursor at the peak of the overshoot and the other at the bottom of the topline of the waveform Include any ringing the oscillation following overshoot in the measurement Essentially you are measuring the thickness of the top line of the waveform Perform the same cursor measurement on the bottom line thickness including any undershoot and ringing Aberrations at the top or bottom line should not exceed 1046 of the signal amplitude WFM 601A WFM 601E amp WFM 601M User Manual 3 23 Reference The Eye display bandwidth of the waveform monitor is 450 MHz so it can not display aberrations faster than this Most receiver circuits are also bandwidth limited and usually ignore fast transients This common bandwidth makes the waveform monitor a good indicator of problem sources in systems Measuring Rise Time Rise time measurements provide a check on the perfor mance of sources and signal degradation by cabling To measure rise time perform the following steps 1 2 Perform the initial settings for Eye measurements described on page 3 22 Select Variable Gain and size the waveform to 1
147. of gamut signals on a Diamond display 3 30 WFM 601A WFM 601E amp WFM 601M User Manual Reference Arrowhead Gamut The Arrowhead gamut display plots luminance Y against chrominance C to check if the composite signal adheres to standard gamut Figure 3 24 shows NTSC and PAL Arrowhead displays 75 Color bars and indicates the values of the graticule lines The arrow head shape of the graticule results from overlaying the standard limits for luminance and luminance plus peak chrominance NTSC display 100 IRE 120 IRE 131 IRE NTSC Current alarm 120 IRE level setting MON Alarm level ae cursor N a M Pe YAmp Y M M gt E E 4 Pd 4 40 IRE IC C Ampl PAL displa pay 700 mV 950 mV PAL lt Current alarm 700 mV level setting N M Alarm level cursor YAmp Y x E gt Rm 2 4 P4 7 d 300 mV Figure 3 24 NTSC and PAL Arrowhead gamut displays WFM 601A WFM 601E amp WFM 601M User Manual 3 31 Reference 3 32 Signals exceeding the luminance amplitude gamut extend above the top horizontal limit top electronic graticule line Signals exceeding the luminance plus peak chrominance amplitude gamut extend beyond the upper and lower diagonal limits The bottom horizontal line shows the minimum allowed luminance level of 7 5 IRE for NTSC and 0 mV for PAL See Figure 3 24 Graticule Format The electronic graticule is different for PAL and NTSC f
148. oks like the Data digital waveform display in Figure 1 20 WFM 601A WFM 601E amp WFM 601M User Manual 1 25 Functional Check Q 525 2 1 dana 10uS DIV 8 ray SS 9 a iur m F1 50 ECL DATE 100 SMP 271 n ACTIVE i H UPDATE FREEZE 96 NEXT FIELD LIipeciMAU BINARY 4 l 3 Tek COMPONENT ANALOG 2 amp 4 Kpg LINE SEL SAMPLE Figure 1 20 Data digital waveform 12 Check the Audio display mode WFM 601A only a Set the function generator for a sine wave at 1 kHz and 10 Vpk pk or less amplitude b Press the ANALOG AUDIO button The AUDIO button indicator should light c Check that the display looks like the Audio display in Figure 1 21 1 2 Figure 1 21 Typical Audio display with small phase error 1 26 WFM 601A WFM 601E amp WFM 601M User Manual _ __ Operating Basics ler Go Functional Overview This section provides an overview of the front panel features and rear panel connectors for the waveform monitor Front Panel Overview Figures 2 1 and 2 2 show the front panels of the three waveform monitors brief discussion of each feature follows the illustrations For detailed informa tion refer to section 3 Reference Tektronix WFM 601M ison DISPLAY VECTOR WAVEFORM GA
149. ond plot Figure 3 22 Construction of the Diamond display WFM 601A WFM 601E amp WFM 601M User Manual 3 29 Reference Checking RGB Gamut For a signal to be in gamut all signal vectors must lie within the G B and G R diamonds Conversely if a vector extends outside the diamond it is out of gamut The direction of an excursion out of gamut indicates which signal is excessive Errors in green amplitude affect both diamonds equally while blue amplitude errors affect only the top diamond and red errors affect only the bottom diamond You can set an alarm to indicate when the signal exceeds the RGB gamut For information on setting the gamut alarm refer to Gamut Alarms on page 3 33 The intensity of a vector indicates its duration momentary out of gamut condition appears as a faint trace Long duration violations show as a bright trace Figure 3 23 gives some sample out of gamut signals on the Diamond display On the Diamond Display monochrome signals appear as vertical lines Nonlinear component processing such as from a gamma corrector that alters white balance can cause deviations along the vertical axis As with the lightning display bending of the transitions indicates timing delays When a color bar signal is applied the vertical axis becomes an indicator of delay errors Example A Example B Example C R Ok R Ok R Ok G 700 mV G Ok G Ok 350 mV B Ok B gt 700 mV lt 0 Figure 3 23 Out
150. onmental requirements WFM 601A WFM 601E amp WFM 601M User Manual 1 11 Installation Installing the Waveform Monitor in a Serial Video System The serial digital monitor can operate almost anywhere in the distribution system due to its high impedance bridging loop through inputs This section describes two types of connections and presents useful information on line termination Most serial equipment employs a receiver that regenerates an output signal such as the receiver shown in Figure 1 6 Routing the incoming serial signal through one of the waveform monitor loop though inputs and connecting the output of the serial receiver to the other loop through input allows you to compare the incoming signal and the regenerated output signal Serial source Regenerated serial output Waveform Monitor rear panel Serial receiver Output SERA Loop through input Serial video SERB output signal Loop through input Figure 1 6 Monitoring the video bit stream of a serial receiver 1 12 WFM 601A WFM 601E amp WFM 601M User Manual Installation You can use the waveform monitor to check serial digital signals around a routing switcher It is possible to look at all the inputs to the switcher with the use of a patch panel and the serial monitor as shown in Figure 1 7 Waveform Monitor rear panel Serial video output signal
151. or 20 80 rise time measured Actual 20 80 rise time 640 ps 400 ps 710 ps 500 ps 780 ps 600 ps 860 ps 700 ps 900 ps 750 ps 940 ps 800 ps 1 0 ns 900 ps 1 1 ns 1 0 ns 1 2 ns 1 1 ns 1 3 ns 1 2ns 1 4 ns 1 3 ns 1 5 ns 1 4ns 1 6 ns 1 5 ns WFM 601A WFM 601E amp WFM 601M User Manual 3 25 Reference 3 26 Measuring Jitter The Eye display in Overlaid mode provides a quick way to measure timing jitter The WFM 601M waveform monitor also provides an automated Jitter measurement described on page 3 37 Timing jitter is the deviation of signal transitions compared to those of a reference clock Ideally all data bit transitions occur at equal intervals In real systems factors such as noise pulse distortion and variations in bit patterns cause timing jitter Jitter results in Eye closure along the time axis narrowing the window in which the data values can be accurately determined Data errors result when the Eye becomes too narrow Jitter is characterized by both its magnitude and frequency Signal transitions deviate from their ideal position by a peak amount and at one or more frequen cies depending on the sources The frequency of the jitter is important in determining its effect on the system Typically only high frequency jitter affects data recovery But low frequency jitter can affect time critical operations such as signal multiplexing and D A conversion The waveform monitor provides three bandwidth filters 10 Hz
152. or 2 4 LINE FIELD 2 4 MAG 2 4 MENU 2 4 overview of functions 2 1 POWER 2 5 REF 2 4 saving settings 3 43 WFM 601A WFM 601E amp WFM 601M User Manual SERIAL 2 4 SWEEP 2 4 using bezel buttons 2 4 using bezel knobs 2 4 VIDEO IN 2 4 Front Panel Controls and Indicators 2 1 Full Field CRC Error in Configure SER ALARM menu 3 11 Full field CRC errored seconds 3 46 Functional Check 1 15 1 26 Audio display 1 26 Digital Waveform 1 24 Eye Display 1 20 Gamut displays 1 23 Jitter Display 1 20 procedure 1 17 required equipment 1 15 Vector Display 1 21 Functional Overview 2 1 ALARM 2 4 Audio display 2 3 CLEAR MENU 2 5 DISPLAY buttons 2 2 EDH DET 2 4 Front Panel 2 1 LINE FIELD button 2 4 MAG button 2 4 MENU 2 4 POWER 2 5 REF 2 4 SERIAL 2 4 SWEEP buttons 2 4 VIDEO IN button 2 4 Fuse fuse part number 1 2 replacing D 1 G Gain audio 3 4 calibration 3 12 for Eye Pattern 3 21 menu 3 28 relative gain check with Bowtie display 3 6 using with Cursors 3 13 using with Digital Waveform display 3 18 Waveform display 3 58 GAIN CAL configuration menu 3 12 GAMUT configure menu 3 10 in Configure GAMUT menu 3 10 Index 3 Index Gamut Alarm 3 33 Gamut Check in Configure GAMUT menu 3 10 Gamut display 3 29 Arrowhead Display 3 31 checking RGB gamut 3 30 composite Arrowhead Display 3 31 configure menu 3 10 Diamond Display 3
153. ormat display showing the Cable screen Features of the Cable Screen The CABLE screen provides the following information m SOURCE SIGNAL LEVEL Indicates the level of the signal source relative to the 800 mV standard To get an accurate measurement you must select the correct CABLE TYPE for your installation m APPROX CABLE LENGTH Displays the cable length between the signal source and the waveform monitor The waveform monitor calculates the cable length based on the input signal power and the cable type To get an accurate measurement you must select the correct CABLE TYPE for your installation m CABLE LOSS Displays the approximate loss of power due to the cable To get an accurate measurement you must select the correct CABLE TYPE for your installation WFM 601A WFM 601E amp WFM 601M User Manual 3 49 Reference 3 50 Measuring Error Rate m DISPLAY Selects either STATUS FORMAT or CABLE screens m CABLE TYPE Selects the type of cable connecting the signal source to the waveform monitor The Cable Type sets parameters needed to calculate the Source Signal Level and Approx Cable Length Press the CABLE TYPE bezel button to select the correct cable type for your installation The waveform monitor provides two methods for measuring data transmission errors in serial video systems The first method uses the Error Detection and Handling EDH system which documented by the SMPTE RP165 standard The second uses a fixed
154. ormats Use the CONFIG GAMUT menu to select the Limit Format The AUTO selection in the Gamut Configure menu determines the correct graticule from your input signal A field rate of 60 Hz indicates NTSC and 50 Hz indicates PAL NTSC and PAL Limit Cursors The alarm limit cursor sets the upper amplitude point at which an alarm is triggered In Figure 3 24 the NTSC limit cursor is set to 120 IRE as indicated at the upper right of the Arrowhead graticule Set the NTSC limit cursor to 100 110 120 or 131 IRE to fit your operating practices Likewise set the PAL limit cursor to 700 mV or 950 mV Use the CONFIG GAMUT menu to set the gamut level For information on setting the gamut alarm refer to Gamut Alarms on page 3 33 Checking Composite Gamut The Arrowhead display provides an automated check on adherence to RGB or composite gamut standards with the Alarm feature discussed on page 3 33 To perform an automated gamut check enable the alarm and set the level The automated check alerts you whenever the signal exceeds the set limit Another useful Arrowhead function is a measure of how well the active video signal is using the dynamic range of video channel properly adjusted signal should be centered in the arrowhead graticule and have transitions that approach all the limits WFM 601A WFM 601E amp WFM 601M User Manual Reference Gamut Alarms The Gamut display modes can alert you whenever a signal exceeds a selected limit
155. ossary 3 Glossary Glossary 4 tion system These are the three color signals generated by the camera and used by the picture monitor to produce a picture R Y One of the color difference signals obtained by subtracting luminance Y from the red camera signal Saturation The property of color which relates to the amount of white light in the color Highly saturated colors are vivid while less saturated colors have more white mixed in and therefore appear pastel For example red is highly saturated while pink is the same hue but less saturated In signal terms saturation is determined by the ratio between luminance level and chrominance amplitude It should be noted that a vectorscope does not display saturation the length of the vectors represents chrominance amplitude In order to verify that the saturation of the colors in a color bar signal is correct you must check luminance amplitudes with a waveform monitor in addition to observing the vectors Termination In order to accurately send a signal through a transmission line there must be an impedance at the end which matches the impedance of the source and of the line itself Amplitude errors and reflections will otherwise result Video is 75 Q system so a 75 Q terminator must be put at the end of the signal path The B Y signal after a weighting factor of 0 493 has been applied The weighting is necessary to reduce peak modulation in the composite signal T
156. ough a high pass filter and applied to a peak detector The peak detector measurement is presented in the jitter measurement box seen in Figure 3 27 The demodulator can detect jitter up to 5 MHz The Jitter measurement lets you pick one of four high pass filters and set the readout units Press the CONFIG MENU button and select JITTER Use the JITTER HPF bezel button to select from the available filters 10 Hz 1 kHz 10 kHz and 100 kHz The jitter readout displays in seconds SEC or unit intervals UI Use the READOUT bezel button select the unit type or turn off the readout You can display the jitter waveform using any of the LINE FIELD sweep selections You can also use the Line Select function to view an individual line Vertical Gain and horizontal MAG are available to enhance your view of the jitter waveform Use the Voltage Cursors to measure specific parts of the jitter waveform The Jitter Config menu READOUT selection determines the units for the Voltage Cursors WFM 601A WFM 601E amp WFM 601M User Manual Reference Line Select The Line Select menu lets you select the part of the extracted video signal to display and measure You can select one line 15 lines or a single sample on any line in any field The selected part is indicated on the MON OUT signals as highlighted video A readout in the upper left of the CRT indicates the currently selected field line and sample For example the display F1 22 SMP1441 means
157. oves the other cursor an equal amount in the same direction Table C 5 describes the voltage and timing cursor tracking commands Both options can be turned ON or OFF Use the Voltage and Timing Cursor positioning commands page C 18 to move the cursors lt TC VC gt TRACK ON I OFF gt lt TC VC gt TRACK lt ON OFF gt Table C 5 Voltage and Timing Cursor tracking commands and options Commands Arguments Remarks VC TRACK lt ON OFF gt When on the Voltage cursors move together to maintain the distance between them Moving VC ONE causes VC TWO to move the same amount TC TRACK lt ON OFF gt When on the Timing cursors move together to maintain the distance between them Moving TC ONE causes TC TWO to move the same amount ve track on tc track off tc track TCURSORS TRACK OFF WFM 601A WFM 601E amp WFM 601M User Manual C 19 Digital Waveform and Digital List Commands Digital Waveform and Digital List Commands The commands in this section allow you to change parameters for the Digital Waveform and Digital List displays DGTL WFM 601M Only Syntax Arguments Examples Returns C 20 NOTE The values displayed when using this command are accurate only when the waveform monitor is in the Data List mode Returns data for all DGTL display settings For a description of each part of the returned data refer to the associated command descriptions DGTL None d
158. ow to configure a signal generator and the waveform monitor to preform the Functional Check procedure Waveform Monitor Signal rear panel generator 75 terminator SERA Output Loop through input Figure 1 10 Initial equipment connections Follow these steps to configure the test equipment 1 Ensure the waveform monitor is enclosed in a cabinet before connecting AC power Connect the waveform monitor to an appropriate AC power source Connect the component serial digital output of the signal generator to one side of the SER A input Terminate the other side of the loop through the SER A input with the 75 Q terminator For the WFM 601A only connect one of the Function Generator audio outputs to pins 8 and 9 of the REMOTE 25 pin connector connect the other output to pins 10 and 11 See Appendix B Remote Operation for more information on configuring the waveform monitor s remote connector for audio input Ensure that the generator amplitude is a nominal 5 V but not greater than 8 Vpeak This procedure does not check the monitor outputs MON OUT To check these outputs connect GBR or YPpP analog component monitor and check for the Color bar pattern during the procedure WFM 601A WFM 601E amp WFM 601M User Manual Functional Check Functional Check Procedure Perform the following steps to check the basic functions and it is connected to
159. plays other than the Parade and Eye displays This command is equivalent to pressing the LINE FIELD button on the Front Panel which has four states ONELINE TWOLINE ONEFIELD and TWOFIELD One and two field sweep modes do not display a time div readout To set the sweep rate for the Eye display and the Parade display when you are displaying multiple channels see SWEEP TIMING ONEL ONEF gt SWEEP TIMING ONEL TWOL ONEF TWOF gt SWEEP TIMING lt ONEL TWOL ONEF TWOF gt sweep timing twol sweep timing SWEEP TIMING TWOLINE WFM 601A WFM 601E amp WFM 601M User Manual Sweep Commands SWEEP TIMING ONEL ONEF gt Syntax Arguments Examples Returns When you display more than one channel at a time in the Parade display the SWEEP TIMING command toggles between one line ONEL and one field ONEF In the Eye mode the ONEL ONEF gt argument allows you to toggle between a 1 and 3 ns div line sweep rate and a field rate sweep To set the sweep rate for displays other than the Eye or multiple channel Parade displays see SWEEP TIMING lt ONEL TWOL ONEF I TWOF SWEEP TIMING ONEL ONEF gt SWEEP TIMING lt ONEL ONEF gt sweep timing onef sweep timing SWEEP TIMING ONEFIELD SWEEP MAG lt OFF ON gt Syntax Arguments Examples Returns Sets horizontal magnification ON or OFF SWEEP MAG lt ON OFF gt SWEEP MAG lt ON OFF gt sweep mag of
160. pliances A 11 Electrical Specifications A 1 Environmental Characteristics 9 Physical Characteristics A 9 Safety Certification Compliance A 10 Safety Standards A 10 STANDARD Format configure menu 3 11 Standard NTSC PAL Glossary 3 Standard accessories 1 2 Standby mode 1 11 Status automated serial format 3 44 Status Screen 3 45 Status Screen for firmware V1 X 3 47 Store Preset function 3 43 Stuck Bits Serial format selection 3 46 SWEEP Line Field 2 4 MAG 2 4 Sweep 3 52 SYNC Format configure menu 3 11 Sync reference setting 3 44 T 10 Eye Eye Pattern trigger mode 3 21 10 8 Bits Serial format selection 3 46 Termination line discussion 1 13 Terminator 75 ohm part number 1 2 Time readout on Serial format screen 3 46 Time per div setting 3 36 setting with Sweep 3 52 Timing jitter measurement with Eye Pattern 3 26 measurement with Bowtie 3 6 Timing cursors 3 13 Trace intensity 3 12 rotation 3 12 selecting number of lines 3 52 Trigger modes for Eye Pattern display 3 20 Overlay mode for Eye Pattern 3 20 2T Pulse to Bar special graticule 3 36 Index 8 U User Service D 1 cleaning D 3 cleaning the fan filter D 1 replacing graticule light bulbs D 2 replacing the CRT filter D 3 replacing the fuse D 1 Using Menus 2 5 V Variable Gain 3 28 Vector Display 3 53 amplitude measurement 3 54 flesh tone indicator 3 54 graticu
161. plitudes Signals out of phase with equal amplitudes Signals out of phase with unequal amplitudes Signals with reverse polarity and equal amplitudes Signals with a phase error of 90 degrees and Typical Audio display pattern with small phase error WFM 601A WFM 601E amp WFM 601M User Manual 1 6 1 7 1 8 1 9 1 10 1 12 1 13 1 14 1 14 1 16 1 18 1 19 1 20 1 21 1 22 1 22 1 23 1 24 1 25 1 26 1 26 2 1 2 2 2 5 2 6 3 1 3 2 3 2 3 3 3 3 3 3 3 4 Table of Contents vi Figure 3 8 Typical Bowtie display on the waveform monitor 3 5 Figure 3 9 Bowtie waveform showing a timing error in CH 3 3 6 Figure 3 10 Bowtie waveform showing gain error 3 6 Figure 3 11 Configure menu for WFM VEC showing the selection knob 3 8 Figure 3 12 Map of functions available in the Configure menu 3 9 Figure 3 13 Example of the Digital List display 3 14 Figure 3 14 Data List display mode in the Video mode 3 15 Figure 3 15 Digital Waveform display in the VIDEO mode 3 16 Figure 3 16 Digital Waveform display in DATA mode 3 17 Figure 3 17 Digital Waveform display showing X5 gain on CH 1 Y waveform 2 6 cece cece cee cee ce renee renee hh tnn 3 18 Figure 3 18 Overlay Eye display 3 20 Figure 3 19 10 EYE triggered display 3 21 Figu
162. r alarm on or off When on a Serial Format error Format error lights the Alarm LED on the front panel This selection corresponds to the choices available under FMT ERROR in the CONFIG SER ALARM menu FFCRC ALARM OFF Sets the full field cyclic redundancy check FFCRC error Full field cyclic alarm on or off When on a full field CRC error lights the redundancy Alarm LED on the front panel This selection corresponds check to the choices available under FULL FIELD CRC ERROR in the CONFIG SER ALARM menu APCRC ALARM OFF Sets the active picture CRC error alarm on or off When Active picture on an active picture CRC error lights the Alarm LED on cyclic redun the front panel This selection corresponds to the choices dancy check available under ACTIVE PIC CRC ERROR in the CONFIG SER menu Examples ser alarm ffcrc off ser alarm fmterr alarm serial alarm apcrc alarm Returns serial alarm apcrc SERIAL ALARM APCRC ALARM serial alarm SERIAL ALARM FMTERR ALARM FFCRC OFF APCRC ALARM UIMENU lt command gt lt options gt These commands provide access to the CONFIG and CRT menus enable the PREset functions and clear the menu display Table C 3 lists the UIMENU User Interface menu commands and argument options Syntax UIMENU command options UIMENU lt command gt Arguments command options C 14 WFM 601A WFM 601E amp WFM 601M User Manual Configuration Commands Table C 3
163. r or a new filter in the fan cover Replace the cover over the fan The line fuse for this instrument is located inside the cabinet under a protective shield Do not attempt to replace this fuse Contact a qualified service technician for assistance WFM 601A WFM 601E amp WFM 601M User Manual D 1 Appendix D User Service Graticule Light Replacement Required Tools Procedure The graticule is illuminated by small light bulbs located under the bezel that surrounds the CRT You or a service person can replace these bulbs if they burn out The Accessories kit shipped with your waveform monitor contain several replacement bulbs Additional bulbs can be purchased from Tektronix or from local electronics distribution sources This procedure requires the following tools m 1 16 inch Allen wrench m Small straight blade screwdriver W Tweezers with curved or serrated tips Follow these steps to replace a graticule light bulb 1 Turn off the Power switch and disconnect the AC line cord 2 Using the Allen wrench loosen the set screws in the five knobs below the CRT then remove the knobs 3 Insert a small straight blade screwdriver into the recessed area on the right or left side of the panel Pry gently until the panel snaps out of the front panel frame See Figure D 1 for panel and recess locations Recess NE NE Recess m Remove this panel Remove these five knobs shaded portion Figure
164. r the REMOTE connector are shown in Figure B 2 and Assignments described in Table B 1 You enable functions by ground closures TTL lows on specified pins Functions with overbars indicate an active low state Figure B 2 Pin assignments for the REMOTE connector Table B 1 Remote connector pin assignments and functions Pin number Function Signal requirement Miscellaneous information 1 Not Used No connection allowed 2 i 8 Y Audio Input Audio input 8 V peak WFM 601A Only The Y and Y inputs can function as differential inputs for a common signal 9 Y Audio Input Audio input 8 V peak WFM 601A Only 10 Audio Input Audio input 8 V peak WFM 601A Only The and X inputs can function as differential inputs for a common signal B 2 WFM 601A WFM 601E amp WFM 601M User Manual Appendix B Remote Operation Table B 1 Remote connector pin assignments and functions cont Pin number Function Signal requirement Miscellaneous information 11 X Audio Input Audio input 8 V peak WFM 601A Only 12 No connection allowed 13 No connection allowed 15 Line Strobe In Line Select Modes true low during selected video lines 16 Serial Video Alarm True low Low pulse when a You must enable the gamut alarm page 3 10 serial error or a gamut alarm and serial alarm page 3 11 in the Configure occurs menu 17 Preset 1 Ground TTL low Recalls the stored Preset from this location or
165. r waveform to measure time line distortion The graticule does not include the first and last 1 us of the bar where short time distortions ringing overshoot undershoot etc occur The solid outer box equals a 4 factor while the dashed line inner box equals a 2 factor 8 K factor 1i graticule 7 100 g B Waveform alignment points 3 Tek COMPONENT ANALOG 2 amp 4 Figure 3 26 Graticule for K factor measurements To measure the K factor distortion follow these steps 1 Apply a 700 mV 2T bar signal with a 26 us duration bar to the active Serial input 2 Adjust the waveform so its bottom is on the 0 V line and its top is on the 700 mV line If necessary adjust the Variable Gain in the GAIN menu so the waveform spans the 0 V to 700 mV lines Note the rising and falling edges of the waveform must align with the marks on the 5046 line 3 After initial alignment measure the largest deviation of the bar top tilt or rounding using the K factor graticule You can expand the waveform by setting Gain to X5 The factor graticule lines then measure 0 8 and 0 496 K factor WFM 601A WFM 601E amp WFM 601M User Manual 3 35 Reference 3 36 Horizontal Scale 2T Pulse to Bar 2T pulse to bar measurements are made using the solid and dashed lines located to the left of the K Factor graticule Setup is
166. rate description 3 12 description 3 8 Eye Pattern description 3 10 Eye pattern filters 3 19 Format description 3 11 Gamut description 3 10 Jitter description 3 10 Jitter Display settings 3 38 map of functions 3 9 SER ARM description 3 11 WFM VEC description 3 9 Connector compatibility 1 14 Index 1 Index Remote B 1 RS232 B 1 Connectors rear panel 2 6 Coprocessor code version determining software version 3 12 CRC use in AP CRC measurements 3 51 use in EDH measurements 3 50 CRC value in Serial format screen 3 46 Cross hair cursor on picture monitor output 3 39 CRT filter part number 1 2 filter replacement D 3 setting intensity 3 12 Cursor Menu 3 13 Cursors 3 13 Both selection 3 13 data cursor correlated 3 39 on MON OUT video 3 39 on picture monitor output 3 39 timing 3 13 timing Cursors with Magnification 3 13 using in Waveform display 3 58 using Markers 3 13 using with Gain 3 13 voltage 3 13 D Data jitter measurement with Eye Pattern 3 27 mode in Digital List display 3 14 mode in Digital Waveform display 3 16 viewing with Digital List display 3 14 viewing with Digital Waveform display 3 16 Data Cursor correlation with Digital Waveform display 3 16 on Digital Waveform display 3 17 Data format for Digital List display 3 15 for Digital Waveform display 3 16 Data Range Serial format checks 3 48 Diamond Display checking RGB Gam
167. re 3 20 Connections for measuring a serial source 3 22 Figure 3 21 Timing Cursors alignment for measuring 20 80 rise tie odes Ie ham a ho axe ao ares ba rne a 3 24 Figure 3 22 Construction of the Diamond display 3 29 Figure 3 23 Out of gamut signals on a Diamond display 3 30 Figure 3 24 NTSC and PAL Arrowhead gamut displays 3 31 Figure 3 25 Waveform measurement graticule 3 34 Figure 3 26 Graticule for K factor measurements 3 35 Figure 3 27 Example of the Jitter display 3 37 Figure 3 28 Parade display of YPbPr shown in Line Select mode SH only Rr eo Me rn fno teo e ae rote To 8 eee ork 3 40 Figure 3 29 Parade display of Y and Pb signals 3 41 Figure 3 30 Example of the Picture display 3 42 Figure 3 31 Serial STATUS display for firmware V2 X 3 45 Figure 3 32 Serial STATUS display for firmware V1 X 3 47 Figure 3 33 Serial format display showing the FORMAT screen 3 48 Figure 3 34 Serial format display showing the Cable screen 3 49 Figure 3 35 Connection for point to point error measurements 3 50 Figure 3 36 Vector display relationship of the Pr and Pb signals 3 53 Figure 3 37 Vector display graticule 3 54 Figure 3 38 Construction of the Lightning display 3 55 Figure 3 39 L
168. re out of phase by some amount but have equal amplitudes The pattern is an ellipse rather than an line which indicates the signals are out of phase The axis of the ellipse lies terminates in the target boxes which indicates that the amplitudes are equal Figure 3 3 Signals out of phase with equal amplitudes WFM 601A WFM 601E amp WFM 601M User Manual Reference Figure 3 4 depicts signals out of phase with unequal amplitudes The figure on the left shows a signal in which the X channel amplitude is greater than the Y channel The figure on the right depicts a signal with a larger Y channel amplitude X X N M Za Y AZ Figure 3 4 Signals out of phase with unequal amplitudes Figure 3 5 depicts an input audio signal in which the X and Y channels are reversed reversed polarity with equal amplitudes Figure 3 5 Signals with reverse polarity and equal amplitudes If the phase error between the X and Y channels is exactly 90 degrees and the amplitudes are equal the pattern of the audio signal input is a circle See Figure 3 6 Figure 3 6 Signals with a phase error of 90 degrees and equal amplitudes WFM 601A WFM 601E amp WFM 601M User Manual 3 3 Reference Measuring Phase Error Adjusting the Audio Gain 3 4 The electronic graticule of Analog Audio Display has scales for measuring stereo audio phase and amplitude errors The dashed diagonal line is the measurement axis for errors less than
169. record of the command string are enclosed in quotes Multiple error messages are separated by a comma and an ALLEV response number ALLEV None Table 9 Typical ALLEV responses to detected system errors ALLEV report Remarks ALLEV 0 No events to report No errors to report in the error message buffer queue empty ALLEV 100 Command error This error message is typical of invalid commands or command not allowed vc differ arguments for instance a misspelled or disallowed ence 1000 command ALLEV 102 Syntax error invalid This error message is typical of invalid anguments character data arrow limit ntsc ire 133 0A ALLEV 103 Invalid separator illegal This error message is typical of invalid characters in the use of alias disp pixb argument of a command 298990 9090090A ALLEV 104 Data type error invalid This message is typical of invalid data types in the character data n ltng var vert value argument of a command for instance ASCII characters where an integer value is expected ALLEV 113 Undefined header This message is typical of incorrect command strings unrecognized command for instance commands sent without an argument gain vec var horz gain Itng var vert value ON this is an invalid command esr ESR 32 allev ALLEV 104 Data type error invalid character data n var vert value ON OA See Table C 9 for additional examples WFM 601A W
170. s between viewing frozen data ON or active data OFF on the Digital List display Freeze the data to study transient events DGTL FREEZE ON OFF DGTL FREEZE ON OFF gt dgtl freeze on dgtl fr DGTL FREEZE ON WFM 601A WFM 601E amp WFM 601M User Manual C 23 Digital Waveform and Digital List Commands DGTL BASE HEX DECIMAL BINARY WFM 601M Only Syntax Arguments Examples Returns C 24 Displays the sample values in hexadecimal binary or decimal format on the Digital List display DGTL BASE HEX DECIMAL BINARY DGTL BASE lt HEX DECIMAL BINARY gt dgtl base hex dgtl base DGTL BASE HEX WFM 601A WFM 601E amp WFM 601M User Manual Display Commands Display Commands The commands in this section allow you to select and set parameters for the display modes of the waveform monitor You must use the VECtor GRATicule and GAMut GRATicule commands to select one of the two modes for the Vector and Gamut displays DISPlay SINGLE display mode Sets the display mode to one of those described in Table C 6 The table lists the mode each command invokes and indicates some of the commands described elsewhere in this section that relate to the command NOTE The DISPlay SINGLE display mode command elicits no response when the waveform monitor is in the Multiple mode You must first enter the Single display mode by disabling the Multiple mode from the waveform
171. s described on page 3 22 2 Select the desired input channel SER A or B WFM 601A WFM 601E amp WFM 601M User Manual Reference 10 Use either the OVERLAY or 10 EYE display mode Press the CONFIG MENU button and select the EYE PATTERN menu to choose OVERLAY or 10 EYE Set CLOCK BW in the Config EYE menu to IKHZ in order to reduce the effects of time jitter which can obscure the amplitude measurement For graticule measurement select X1 vertical gain and make sure that variable gain is off At X1 gain the scale is 100 mV div Use the VERT POS knob to position the waveform bottom at the 0 V line If the waveform exceeds 800 mV position its bottom at the 1 2 or 3 V line Measure the amplitude at a horizontal part of the waveform top line Enable the Voltage Cursors Position one cursor at the top horizontal part of the waveform ignore any overshoot on the rising edge Position the second cursor at the bottom of the waveform ignore any undershoot The Voltage Cursor readout gives the signal amplitude For Cursor measurements you can use any gain setting including variable gain since the waveform and the cursors are equally affected by the gain setting Use higher gain settings such as X5 to help match the cursor to the waveform Signal sources should measure 800 10 Signal amplitudes outside this range can degrade receiver performance Measuring Aberrations Serial sources should pr
172. ser Manual amplitude 3 22 jitter 3 26 rise time 3 24 word correlated behavior 3 27 Serial format 3 44 10 8 Bits 3 46 ANC Checksum 3 49 ANC Parity 3 48 AP CRC ERR SEC 3 46 APPROX CABLE LENGTH 3 49 Approximate Cable Length for firmware V1 X 3 47 Audio 3 46 CABLE screen 3 49 CABLE TYPE 3 50 CABLE TYPE for firmware V1 X 3 47 Changed Since Reset 3 46 Data Range 3 48 DISPLAY 3 50 Display 3 46 Elapsed Time 3 46 F1 AP CRC Value 3 46 F2 AP CRC Value 3 46 FF CRC ERR SEC 3 46 Field Length 3 48 525 625 Lines 3 46 Format Error 3 46 FORMAT screen 3 48 Line Length 3 48 Other ANC Data 3 46 RECEIVER POWER LEVEL 3 49 Reset 3 46 SAV Placement 3 48 Serial Signal Level for firmware V1 X 3 47 Signal Present 3 46 SOURCE SIGNAL LEVEL 3 49 STATUS screen 3 45 STATUS screen for firmware V1 X 3 47 Stuck Bits 3 46 Serial readout screen Cable 3 49 Format 3 48 Status 3 45 Status for firmware V1 X 3 47 Serial Signal Level serial format for firmware V1 X 3 47 Service manual 1 3 Settings saving as Preset 3 43 1700F00 Cabinet 1 6 1700F02 Portable cabinet 1 6 1700F04 side by side rack mount assembly 1 6 75 ohm terminator 1 2 Shipping instrument 1 10 Index 7 Index Signal receiver power level 3 49 source signal level 3 49 Signal Present Serial format selection 3 46 Software Version Number 3 12 Specifications A 1 Certifications and Com
173. signal amplitude and timing Press the VECTOR GAMUT button to select a Vector display Press the lower bezel button to select VECTOR or LIGHTNING modes Both vector modes can operate with 75 or 100 Color Bar signals Press the CONFIG MENU button and select the WFM VEC menu to select the 7596 or 100 graticule to match your test signal The Vector display plots the two color difference signals Pb and Pr against each other similar to a composite vectorscope Figure 3 36 shows how the color difference signals are plotted to create the Vector display Figure 3 37 shows the actual polar graticule with trace lines indicating how a trace would appear on the graticule The polar display permits measurements of hue in terms of the relative phase of the chrominance signal Amplitude of chrominance is the displacement from center radial dimension of amplitude towards the color point Pr signal Pb signal Figure 3 36 Vector display relationship of the Pr and Pb signals WFM 601A WFM 601E amp WFM 601M User Manual 3 53 Reference 3 54 Vector Graticule The waveform monitor Vector graticule shown in Figure 3 37 operates as a component vectorscope Each chrominance vector of a Color Bar signal terminates as a bright dot in a target The distance from the center box to the target box corresponds to the amplitude for the color being measured The dot brightness corresponds to the duration of the co
174. six inches greater than the dimensions of the instrument Use a shipping carton that has a test strength of at least 275 pounds b Surround the instrument with a protective bag anti static preferred For instruments that are not in a cabinet wrap a cardboard piece around the bagged instrument to protect internal components WFM 601A WFM 601E amp WFM 601M User Manual Installation c Pack dunnage or urethane foam between the instrument and the carton If using Styrofoam kernels overfill the box and compress when closing the lid You need three inches of cushioning on all sides of the instrument 3 Sealthe carton with shipping tape or industrial staples Connecting Power The waveform monitor operates from a single phase power source with the neutral conductor at or near earth ground The line conductor is fused for over current protection A protective ground connection through the grounding conductor in the power cord is essential for safe operation WARNING When power is supplied line voltage will be present in the waveform monitor even if the POWER switch is set to STANDBY AC Power Requirements The waveform monitor operates from an AC line frequency of 50 or 60 Hz over the range of 90 250 Volts without the need for configuration except the power cord Refer to page 1 2 for the power cord options The typical power draw is 75 W Refer to Appendix A Specifications for additional information on power and envir
175. splay with an incomplete null in the right waveform If the gain error is in CH 1 neither waveform has a complete null If CH 2 gain is off the left waveform will not null completely but the right one will If the gain is off for CH 3 as in Figure 3 10 the left waveform will be normal and the right one will not reach a complete null Incomplete null ww Figure 3 10 Bowtie waveform showing gain error in CH 3 WFM 601A WFM 601E amp WFM 601M User Manual Reference Calibration Instrument gain may require adjustment for special monitoring applications or to ensure the best precision for cursor or graticule signal measurements Follow these procedures to set the vertical and horizontal gain Setting Vertical Gain 1 Press the WAVEFORM PARADE button to select the Waveform display 2 Press the CONFIG menu button and use the bezel knob to select the CALIBRATE submenu Press the bezel buttons to set CAL SIG on and GAIN CAL on 3 Usethe VERT POS control to place the calibrator signal between the 0 V reference and 0 7 graticule lines The amplitude of the calibration signal is exactly 700 mV 4 Ifthe RESET V CAL readout is on press the adjacent bezel button to turn it off Pressing the RESET V CAL bezel button reinstates the gain setting established at the last calibration 5 Check to see that the calibrator signal is now displayed at exactly 700 mV If the gain is off adjust the gain for exactly 700 mV with the V C
176. sure ments using the cursors CURsor SELect lt VOLT TIME VOLT_TIME MARK NONE Enables any one of the following cursor types m VOLT provides two voltage cursors and a track control m TIME provides two time cursors and a track control m MARK provides three amplitude markers m VOLT TIME provides both VOLT and TIME cursors Use CUR CONTROL to select either the voltage or time cursors Syntax CURsor SELect VOLT TIME VOLT TIMEIMARK NONE CURsor SELect Arguments lt VOLT TIME VOLT_TIME MARK NONE Examples cur sel volt cur select mark cursor select volt time Returns cur CURSOR SELECT VOLT_TIME CONTROL TIME cursor select CURSOR SELECT TIME C 16 WFM 601A WFM 601E amp WFM 601M User Manual Cursor Commands CURsor CONTROL VOLT TIME Syntax Arguments Examples Returns Selects either the VOLT or TIME cursor when the cursor type is both voltage and time This command operates like the bezel button for selecting between voltage and time cursors when VOLT TIME the front panel selection V T is enabled CUR CONTROL lt VOLT TIME CUR CONTROL lt VOLT TIME gt cur control time cursor control CURSOR CONTROL TIME lt TWO THREE marker position Syntax Arguments Examples Returns Sets the position of the three amplitude markers over the voltage range of the displayed waveform These selections correspond to the MARK
177. t init601Port Initialize the port to communicate with the WFM601x This procedure connects the program to a COM port attempts to open it and initialize communications with the instrument It returns either A OK 0 or an error code value indicating the problem t601Port int desiredComPort The desired COM port from 1 to 4 tic unsigned char ioBuf IO BUFSIZ Buf used by IO lib lStat mStat Required status ister int tryCounter Count tries ister int errCode Keep error values Check arguments for sanity desiredComPort 1 desiredComPort 4 return INV PORT Set the desired communications port Port desiredComPort Repeatedly attempt to initialize and open serial port tryCounter 0 tryCounter lt NUMBER OF RETIRES tryCounter Initialize port protocol port 9600 Baud no parity no stop bits 8 bit data errCode init al comPort 7 0 0 3 amp lStat amp mStat IX If port initialized without error open port and return if errCode OKAY errCode open al comPort sizeof ioBuf 2 sizeof ioBuf 2 0 0 ioBuf i y WFM 601A WFM 601E amp WFM 601M User Manual Remote Command Processing Code if errCode A OK Set remote XON XOFF flow control void setop al comPort 6 1 return A OK break j Open and close port to reset it and try to initialize it again
178. t 3 22 Clock BW filter 3 19 Clock BW filters 3 19 Configure menu 3 10 EQ EYE mode 3 19 FLAT mode 3 19 WFM 601A WFM 601E amp WFM 601M User Manual Index jitter measurement 3 26 measurements 3 22 Overlay trigger mode 3 20 rise time actual 3 25 rise time measurement 3 24 Trigger Modes 3 20 vertical gain 3 21 word correlated behavior 3 27 F F1 AP CRC Value Serial format selection 3 46 F2 AP CRC Value Serial format selection 3 46 Fan filter part number 1 2 Fan filter cleaning or replacing D 1 Features product features 1 1 FF CRC ERR SEC Serial format selection 3 46 Field selecting 3 39 selecting one or two for display 3 52 Field Length Serial format checks 3 48 15H Line Select mode 3 39 Filter fan filter part number 1 2 for Eye Pattern 3 19 for Parade Display 3 27 for Waveform Display 3 27 high pass for Jitter Display 3 38 Filter Menu 3 27 Firmware determining software version 3 12 525 625 Lines Serial format selection 3 46 FLAT Filter menu selection 3 27 FLAT EYE Eye Pattern mode 3 19 flesh tone indicator 3 54 FMT Error in Configure SER ALARM menu 3 11 FORMAT configuration menu 3 11 Format serial status 3 44 Format Error Serial format selection 3 46 Format Screen 3 48 Freeze Update for Digital List display 3 15 Front panel ALARM indicator 2 4 Clear Menu 2 5 DISPLAY buttons 2 2 EDH DET indicat
179. t put the waveform monitor into the Lightning display mode using the DISPlay SINGLE VECtor page C 25 and VECtor GRATicule LTNG page C 11 commands Then use the VECtor display vertical and horizontal positioning commands listed in Tables and 12 With V2 2 and above positioning commands are effective without first selecting the Lightning display Syntax X POSITion VERTical HORZ gt lt display mode range POSITion lt VERTical HORZ gt lt VERTical HORZ gt lt display mode gt Arguments display mode range C 44 WFM 601A WFM 601E amp WFM 601M User Manual Position Commands Table C 11 POSition VERTical commands and options display mode range Remarks WFM EYe BOWtie 8188 to 8188 Positions the named display vertically PIX 3120 to 966 Positions the Picture display vertically VECtor 500 to 500 Positions the Vector display vertically LTNG b00 to 500 Positions the Lightning display vertically ARROWhead 2047 to 2047 Positions the Arrowhead Gamut display vertically DIAmond 2047 to 2047 Positions the Diamond Gamut display vertically AUDIO 250 to 250 Positions the Audio display vertically WFM 601A only Table C 12 POSition HORZ commands and options lt display mode gt lt range gt Remarks WFM EYe BOWtie 12282to 12282 Positions the named display horizontally PIX 2700 to 2700 Positions the Picture display horizontally
180. t signal filters for the Waveform and Parade display modes The three available filters are FLAT unfiltered LPASS 1 MHz low pass filter and the DIFF differentiated steps filter Pressing CLEAR MENU turns off the filter selection readout To turn off the Filter selection and leave the Filter menu press the FILTER button press the button twice if the Filter menu is not displayed Leaving the FILTER menu returns the monitor to the unfiltered FLAT setting WFM 601A WFM 601E amp WFM 601M User Manual 3 27 Reference Gain Menu 3 28 The GAIN menu allows you to expand the display vertically by set levels or to vary it continuously The expanded waveform lets you inspect a waveform feature or more precisely position a cursor for a measurement Press the GAIN MENU button to access the Gain menu Use the fixed bezel buttons to select from the gain settings of X1 X5 X10 and Variable gain Gain is useful in all display modes except PICTURE mode In Vector displays variable gain changes both horizontal and vertical gain equally Lightning and Diamond displays have both horizontal and vertical variable gain CLEAR MENU turns off all of the menu readout except the VAR GAIN label Variable gain remains active as long as the front panel GAIN indicator is lit To turn Gain off press the GAIN button once twice if the Gain menu is not visible When you quit the Gain menu Variable gain returns to the calibrated setting and Vertical
181. tected by the waveform monitor The ability to measure a receiver error rate by monitoring its regenerated output is very useful in an operating system Although many types of video equipment do not include EDH error detection most have regenerated or reclocked serial outputs This technique can bring error rate measurement capability to virtually any point in a facility Strategic placement of waveform monitors can help track the performance of an operating video system Similarly you can use a single EDH monitor to proof an entire digital chain by moving it from one regenerated output to the next Error Rate Measurement with AP CRC The waveform monitor calculates CRC check words for the active picture area of each video field The two CRC values are displayed on the SERIAL STATUS screen one for field 1 F1 and one for field 2 F2 With a fixed pattern test signal these CRCs should have constant values Hence any change in the CRC indicates an error By passing a static test signal through system equipment you can look for errors introduced by the system equipment Connect the waveform monitor as shown in Figure 3 35 The source does not need EDH but it must be a fixed pattern signal repeating every two fields Display the SERIAL STATUS screen Press the RESET key and check that the CHANGE SINCE RESET flag reads No If an error occurs a CRC value will briefly change values then resume the fixed pattern value Even a very brief cha
182. teristic Temperature operating Altitude operating Equipment Type Equipment Class Overvoltage Category Standard 0 to 40 C 2000 meters Test and Measuring Class Grounded product as defined in IEC 1010 1 Annex H Overvoltage Category II as defined in IEC 1010 1 Annex J Note Rated for indoor use only Category Examples of Products in this Category CAT Ill Distribution level mains fixed installation CAT Il Local level mains appliances portable equipment CAT I Signal levels in special equipment or parts of equipment telecommunications electronics Pollution Degree Pollution Degree 2 Do not operate in environments where conductive pollutants may be present A 10 WFM 601A WFM 601E amp WFM 601M User Manual Appendix A Specifications Table A 8 Certifications and compliances Characteristic Standard Meets intent of Directive 89 336 EEC for Electromagnetic Compatibility and Low Voltage Directive 73 23 ECC for Product Safety Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Communities EC Declaration of Conformity EMC Directive 89 336 EEC 1 2 EN 55011 Class A Radiated and Conducted Emissions EN 50081 1 Emissions EN 60555 2 AC Power Line Harmonic Emissions EN 50082 1 Immunity IEC 801 2 Electrostatic Discharge Immunity IEC 801 3 RF Electromagnetic Field Immunity IEC 801 4 Electrical Fast Transient Burst Immunity IE
183. tes the effects of CRT nonlinearity 40 ns c N e e E i EL 100 a HH HH EH B LL o Ju E t gd 1 50 VECTOR LIGHTNING 3 Tek CC MPCNENT ANALOG 2 amp 4 lt lt 80 ns Figure 3 39 Lightning graticule showing interchannel timing errors The three signals are back porch clamped and identically low pass filtered to provide a common point and identical delay through the system The color difference signals are line alternated and the luminance signal is inverted on alternate lines The information available from the Lightning display is color difference signal accuracy horizontal displacement of either half of the display luminance gain vertical displacement between the black and white levels timing delay between either color difference signal and luminance bending of the green magenta transitions Figure 3 39 shows the graticule and the measurement targets and timing delay scales WFM 601A WFM 601E amp WFM 601M User Manual Reference Luminance Gain Measurement The signal is driven along the vertical axis above and below the center box by the luminance signal The lower half is driven down from the center The luminance gain is correct when the center dot clamped black level is centered in the target box and the positive and negative excursions end at the top and
184. the Cursor menu press the CURSOR menu button again To turn off the cursors press the CURSOR button when the Cursor menu is displayed two presses when the Cursor menu is not displayed Variable Gain and Sweep The Cursors are tied to the trace scaling Hence cursor measurements are with Cursors accurate with Gain set to X5 X10 or Variable Gain The various sweep modes are compatible with the Time Cursors You can make Time Cursor measurements in any of the Sweep modes 1 Line 2 Line 1 Field or 2 Field You may need to brighten the cursors and the trace by pressing the CRT MENU button and adjusting the intensity Time Cursors measurements are possible with MAG on though both cursors may be off screen The measurements are accurate even though you cannot see the WFM 601A WFM 601E amp WFM 601M User Manual 3 13 Reference Time Cursors Use the HORIZ POS knob to pan left or right to the cursor locations Digital List WFM 601M Only The Digital List display lists the data values in sequence as they occur in the digital component video signal Press the DGTL WFM DGTL LIST button to enter the Digital List mode Figure 3 13 shows an example of the Digital List display You can use the data cursor assigned to a bezel knob to scroll through the data The location of the data cursor in the Digital List display is correlated with the data cursor in the Digital Waveform and Parade display modes Video Data Selection The Video Data
185. the delay in the decoder output filtering you can usually ignore them In the component domain there is no decoding required and therefore the color bar transitions contain useful timing information These timing differences appear as looping or bowing of the transitions It is possible to measure the amount of bowing and convert the results to a coarse delay value If the transition looping appears large use the Lightning display to measure the interchannel delay Lightning Display The Lightning display plots the color difference signals Pb and Pr against the luminance Y signal In the top half of the Lightning display Pb is plotted against Y and on the bottom half Pr is plotted against inverted Y The vertical center is the 0 V or black clamp point Figure 3 38 shows how the waveform monitor plots the Lightning display from the three component signals White Luminance Y Y signal Black ov White Luminance Y P R Y signal Figure 3 38 Construction of the Lightning display WFM 601A WFM 601E amp WFM 601M User Manual 3 55 Reference 3 56 Figure 3 39 shows the Lightning graticule with a trace The target boxes at the end of each vector indicate a tolerance of 14 mV The closely spaced small dots provide a guide for checking transitions These dots are spaced 40 ns apart while the widely spaced dots represent 80 ns The electronic graticule elimina
186. ton 1 10 PAL Arrowhead Gamut graticule 3 31 setting alarm cursor 3 32 Parade Display 3 41 filter selection 3 27 PbPr Gain measurement with Lightning Display 3 57 plotted against Luminance 3 55 Vector Display 3 53 PBPR Offset in Configure WFM VEC menu 3 9 Performance requirements Specifications A 1 Phase error audio 3 4 Physical Characteristics A 9 Picture Display 3 42 Power AC requirements 1 11 requirements 2 6 POWER Switch 2 5 Power connector 2 6 Power cord Option A1 Option A2 Option A3 Option A4 WWW UW l j pem J J Index 5 Index Option A5 1 3 options 1 3 Power connecting 1 11 PR to Y Timing 3 57 Preset renaming 3 43 Preset Menu 3 43 Recall 3 43 Recover 3 43 Rename 3 43 Return 3 43 Store 3 43 Procedure Functional Check 1 17 Product Description 1 1 R Rack Adaptor 1 9 Readout in Configure JITTER menu 3 10 setting brightness 3 12 Rear panel connectors 2 6 Jitter Out 2 7 loop through inputs 2 7 MON OUT Y G PB B PR R 2 7 multi pin connectors 2 7 outputs 2 7 power connector 2 6 Remote 2 7 RS 232 connector 2 7 Serial Out 2 7 Recall Preset function 3 43 Recalling Preset front panel settings 3 43 Recover Preset function 3 43 Recovering from zero brightness readout 3 12 REF setting reference mode 3 44 Reference 3 1 REF button 2 4 setting mode 3 44 Related manuals xi REMOTE con
187. ts information you need to set up your waveform monitor and to check that it is functional This section contains the following information Product Description Product Description gives an overview of the product capabilities Accessories lists the standard and optional accessories Installation describes how to set up the waveform monitor for use Functional Check gives a procedure to verify the primary functions of your waveform monitor The waveform monitors measure and display 4 2 2 component serial digital signals A waveform monitor displays serial digital signals as the familiar component signals as an Eye pattern as digital data or in a variety of standard measurement modes Use the EDH Error Detection and Handling system and the suite of automated checks of the serial digital format to verify data integrity Refer to Appendix A Specifications for details of the waveform monitor performance Features The waveform monitors offers the following features Two 270 Mbit serial component loop through inputs Digital video standards SMPTE 259M ITU R BT 656 and ITU R BT 601 RGB and Y Pp Pp display format for 525 and 625 line signals Eye Pattern display with Timing and Voltage Cursors on the WFM 601E and the WFM 601M Jitter demodulator with numeric jitter readout and video correlated jitter waveform display on the WFM 601M Parade or Waveform display of Y Pg and Pg component signals Digital Waveform and Data displays with Dat
188. urns Sets the offset for the Pb and Pr channels to either mv or 350 mv INput PBPROFFSet MV 0 1 3507 INput PBPROFFSet MV 01MV 350 input pbproffset mv 0 in QiNPUT SOURCE SERIALA CHANNEL CHI CH2 PBPROFFSET MV 0 WFM 601A WFM 601E amp WFM 601M User Manual C 39 Jitter Measurement Commands Jitter Measurement Commands The commands in this section allow you to change parameters for the Jitter measurement display JiTter HPFiLter J10HZ J1000HZ J10KHZ J100KHZ gt WFM 601M Only Selects the high pass filter frequency for the Jitter measurement display This setting corresponds to the Jitter HPF selection in the Config Jitter menu Syntax JITter HPFILter lt JIOHZ J1000HZ JIOKHZ JIOOKHZ gt JITter HPFILter Arguments lt JIOHZ J1000HZ JIOKHZ JIOOKHZ gt Examples _jit hpfilter j1000hz jit hpfil j10khz Returns jit JITTER HPFILTER JIOKHZ UNITS UL ALIGNMENT 0 11 ULTIMING 0 10 UI JITter UNITS SEC UI OFF WFM 601M Only Selects the units for the readout of jitter magnitude Syntax JITte UNITS SEC UII OFF JITter UNITS Arguments SEC UII OFF Examples _jit units OFF Returns _jit units JITTER UNITS OFF C 40 WFM 601A WFM 601E amp WFM 601M User Manual Jitter Measurement Commands JITter ALIGNMENT TIMING gt WFM 601M Only Syntax Arguments Examples Returns Independently queries the magnitude of the jitter components T
189. ursor in the Digital List Display and with the sample select indicator or blivit in the Waveform and Parade Displays For more information on the data cursor refer to Line Select on page 3 39 The value of the current sample on each waveform appears above the waveform The character h d or b following the value indicates its base 525 2 1 e ES Y 786 d F1 80 100 COMPONENT ANALOG 2 amp 4 LINE SEL SAMPLE Figure 3 15 Digital Waveform display in the VIDEO mode Use the VIDEO DATA bezel button to select the format of the digital waveform Figure 3 15 shows the VIDEO mode and Figure 3 16 shows the DATA mode Note the DATA label at the top of the data cursor in Figure 3 16 The VIDEO mode displays the three video component channels YCpC as separate waveforms Any or all of the three channels may be displayed at one time The channels are correctly time aligned so the data cursor shows the current sample values for each Note that Y and Y samples are interleaved to create the CH 1 waveform As you move the data cursor through the CH 1 data the label WFM 601A WFM 601E amp WFM 601M User Manual Reference will switch between Y and Y The symbol gt indicates the currently selected sample The offset or broken data cursor seen in Figure 3 15 indicates that the Y sample is selected and it is not aligned nonco sited w
190. ut 3 30 construction of the diamond graticule 3 29 RGB gamut 3 29 DIFF Filter menu selection 3 27 Digital List 3 14 Freeze Update selection 3 15 Line Select interaction 3 15 picking the data format 3 15 Video and Data modes 3 14 Index 2 Digital Waveform 3 16 in Functional Check 1 24 output monitor signals 3 17 picking the data format 3 16 using Gain 3 18 using Line Select 3 18 Video and Data modes 3 16 Direct synchronization selection 3 11 Display Audio 3 1 Bowtie 3 5 Multiple 3 41 Parade 3 41 Serial format selection 3 46 serial format selection 3 50 setting intensity 3 12 Vector modes 3 53 Waveform 3 58 E EAV SAV in Configure WFM VEC menu 3 9 EDH using to measure error rate 3 50 EDH DET front panel indicator 2 4 Elapsed Time Serial format selection 3 46 Electrical specifications A 1 Enclosure cabinet selection 1 5 Environmental Characteristics 9 EQ EYE receiver equalization mode 3 19 Error rate AP CRC measurements 3 51 3 53 EDH measurements 3 50 3 53 measurements 3 50 3 53 Errored seconds full field 3 46 Serial format screen 3 45 EXT REF input 2 7 External Reference Input Loop Through Inputs 2 7 Eye Display in Functional Check 1 20 reference discussion 3 19 EYE PATTERN Configure menu 3 10 Eye Pattern See also Eye Display 10 Eye trigger mode 3 21 aberration measurement 3 23 amplitude measuremen
191. with a bezel button EQ EYE WFM 601E only Displays the input signal as an equalized Eye pattern display which is useful when the signal has been degraded by long transmission lines JITTER WFM 601M only Displays the peak to peak jitter measurement over a specified bandwidth The display includes the demodulated jitter waveform for measurement VECTOR Displays the component signals as either conventional Vector or Lightning mode Vector mode plots the chrominance signals and P against each other to show their phase and amplitude relationships The Lightning mode shows amplitude and timing relationships between the luminance and chromi WFM 601A WFM 601E amp WFM 601M User Manual Functional Overview nance signals The top of the display plots Y against Pp while the bottom plots Y against P GAMUT Displays the video signal in Diamond or Arrowhead gamut displays Diamond mode evaluates RGB signals for gamut limit violations Arrowhead display plots Y versus chrominance magnitude to show adherence to composite gamut limits A gamut error message appears at the lower left when an RGB or Composite gamut error is detected Turn this alarm on or off in the CONFIG menu WAVEFORM Displays the video signal as voltage versus time Any or all of the three channels can be displayed from a single video line PARADE Displays up to three channels of the serial video signal in succession MULTIPLE Allows two display modes t
192. y page C 45 PARade Parade Use the command INPUT SOU to select the A or B inputs and use INPUT CHA to select which of the RGB or YPbPr channels to display page C 38 DLIST Digital List Use the command DGTL VID to select the Video or Data modes page C 23 Use the command DGTL FR to view frozen or active data page 6 23 DWFM Digital Waveform display single wfm disp single ey disp single DISPLAY SINGLE EYE DISPlay INTENSITY display mode gt lt line select mode intensity The DISPlay INTENSITY commands set the intensity of the display mode in the Normal H1 or H15 Line Select modes Intensity is an integer from 2047 to 1700 Table C 7 describes the display mode lineselect mode and intensity options C 26 Syntax Arguments DISPlay INTENSITY display mode gt lt line select mode intensity DISPlay INTENSITY INTENSITY lt display mode INTENSITY lt display mode gt lt line select mode gt lt display mode gt lt line select mode lt intensity gt WFM 601A WFM 601E amp WFM 601M User Manual Display Commands Examples Returns Table C 7 DISPlay INTENSITY command options display mode line select mode intensity WFM NORMal H1 H15 2047 to 1700 Sets the intensity of the Waveform display VEC lt NORMal H1 H15 gt 2047 to 1700 Sets the intensity of the Vector display LTNG lt NORMal H1 H15 gt 1 2047 to 1700
193. yed signal on a waveform monitor or vectorscope Graticules may either be screened onto the faceplate of the CRT internal graticule or onto a piece of glass or plastic that fits in front of the CRT external graticule They can be electronically generated Harmonic Distortion Signal distortion caused by non linearities in a system System non lineari ties produce multiples of a single frequency signal applied to the the system Harmonic distortion is evident when a pure sine wave applied to a system produces harmonic content at multiples of the sine wave frequency at the output Hue The property of color that allows us to distinguish between colors such as red yellow purple etc Lightning Display A display for use with SMPTE specified color difference signals Y Pp Pg that plots the two color difference signals against luminance to create a display similar in appearance to a lightning bolt WFM 601A WFM 601E amp WFM 601M User Manual Glossary Linear Distortion Refers to distortions which are independent of signal amplitude Lissajous figure An X Y plot in which the signals applied to both axes are sinusoidal functions For a stable display the signals must be harmonics Lissajous figures are useful for determining phase and harmonic relationships LSB Least Significant Bit The lowest weighted bit or signal line Luminance The signal Y which represents brightness or the amount of light in the picture Luminanc

User Manual WFM 601A, WFM 601E & WFM 601M Serial Digital

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User Manual WFM 601A, WFM 601E &amp; WFM 601M Serial Digital

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User Manual WFM 601A, WFM 601E & WFM 601M Serial Digital