Home

TEK WFM 90D,91D User

1. Eee J GJ iJ TJ x O Figure 1 2 Inside of the battery compartment showing polarity markings 1 10 WFM90D and WFM91D User Manual Installation Mechanical Installation You can purchase a viewing hood and desk stand to use with your WFM90D or WFM91D Viewing Hood The viewing hood makes it easier to view the instrument display in well lighted situations To attach the hood to the instrument attach the supplied Velcro strips to the sides of the instrument and then press the flaps of the viewing hood onto the strips as shown in Figure 1 3 A lt Figure 1 3 Installing the viewing hood WFM90D and WFM91D User Manual 1 11 Installation Desk Stand The desk stand holds the monitor upright on a flat surface Insert the prongs of the stand into the holes in the back of the instrument as shown in Figure 1 4 Figure 1 4 Installing the desk stand WFM090D and WFM91D User Manual Installation Travel Case The travel case Option 33 can safely hold the handheld monitor and its accessories while traveling between locations The case also holds a companion handheld TSG95 or TSG601 generator The travel case compartments see Figure 1 5 hold the
2. 7 FF CRC AP CRC 10 ELAPSED LOW BAT r 8 VXXX 9 Figure 2 3 Onscreen readout messages Readout Description 1 The video message reports the video type Possible messages are shown in Table 2 1 2 The component readout shows which component is selected for display through the digital Waveform menu COMPOSITE GREEN BLUE RED Y Pb Pr C The readout only appears if digital video is locked or if INPUT CTL is set to DIGITAL 3 The EXT REF message appears in the Waveform and Vector display modes when the video signal is locking to an external video reference signal WFM90D and WFM91D User Manual 2 7 Functional Overview 4 The EDH report appears when EDH is turned on For information about the EDH report refer to page 2 15 5 When the cable report is turned on see Configuration Menu page 2 31 the message displays gt CABLE if the cable length is greater than approximately 200 meters If the cable is shorter than 200 meters there is no message NOTE The cable report is only available when the instrument is operating in DIGITAL mode In ANALOG mode there is no report 6 The sweep rate is only displayed in the Waveform display mode There is no sweep rate readout when 2 Field sweep is selected 7 When the CRC Watch is turned on the ERRORED SECONDS message block appears For information about CRC refer to CRC Watch on page 2 14 8 The LOW BAT mess
3. oo ooooooomoo 2 52 Using the Presets i vb te Pas e DUE brem a ehe 2 52 Using the Time Out Mode 2 a 2 53 WFM90D and WFM91D User Manual iii Table of Contents Reference Reference 454223 EO OH RES TEES BSAA Eas 3 1 Waveform Graticule sn darte D ope wd el ICE S REN 3 1 Horizontal Stale 3 zu aad ERAN AM ERA 3 2 Vertical Scales uoto ye oae dra etico x e Runs dites 3 2 Making Waveform Measurements 220 00 eee 3 3 Standard Measurements iss fe et y RCORE ER ea 3 3 Peak Witt siste Bar Dern als die Shane eee antares 3 3 DC RESO S ot op Sete rae EN ELT E EE REESE 3 3 Vector Graticule v oae a semel do dr dnd 3 4 Chrominance Vector Targets o o ooooooomoom o 3 5 Differential Phase and Gain Measurement Box 3 5 Making Vector Measurements 200 e ce eee eee 3 7 Chroma Bandwidth 5 aea x eC aote ad 3 7 Stress Testin oaut sd obra D ie lite edi et cri erdt ha ted 3 8 Audio GAN CUTS 5 ues Gort o derriba 3 9 Making Audio Measurements 0 20 e eee eee 3 10 Signal Amplitude o ade eos ed M SER ER SE AER 3 10 Frequency Response eqs scat ote ec ab cre RO Fu 3 10 Headroom st a e C SO eM etes 3 10 Appendices Appendix A Specifications oooooooooooo o A 1 Electrical Characteristics Loss taria TRES En A 2 Physical Characteristics 2 2 dne Sao crasas A 11 Environmental Characteristics 00 0 cece eee eee A 11 Corcuera A 13 Appendix B User Service eeeeee
4. Instrument options and accessories as well as ordering information are listed beginning on page 1 5 Battery operation is discussed beginning on page 1 7 A tutorial covering basic instrument operation starts on page 2 39 Detailed menu descriptions begin on page 2 25 A complete listing of instrument performance specifications is located in Appendix A WFM90D and WFM91D User Manual 1 3 Product Description 1 4 WFM90D and WFM91D User Manual SN A Options and Accessories This section lists the options and accessories for the WFM90D and WFM 1D You can order options and accessories with the monitor or purchase them separately through a Tektronix field office or distributor When ordering include the option or part number and the description Options You can order the following options with the WFM90D and WFM91D When ordering replacement power adapters use the Tektronix part numbers listed in Table 1 1 Table 1 1 Options Option Tektronix part number Option 01 146 0107 01 Option A1 119 4540 02 Option A2 119 4541 02 Option A3 119 4542 02 Option A6 119 4539 02 Option A10 119 6904 00 Option M8 4 calibration performance tests Option 33 Travel line package including m NiMH battery pack Viewing hood m Desk stand m Travel case for a WFM90D or WFM91D monitor and a TSG95 or TSG601 signal generator WFMO90D and WFM91D User Manual 1 5 Options and Accessories Accessories Standard acce
5. Time Out Mode When this mode is enabled the backlight and or the instrument will shut down after there has been no keypad activity for a menu se lected length of time The instrument power shutdown is only functional when the instrument is battery powered You can use this mode to reduce battery power usage while the instrument is battery powered and also to extend the life of the backlight bulb To enable the Time out mode use the Configuration menu Backlight Time Out When the backlight has been timed out the LCD display goes blank and the instrument appears to be off The backlight turns back on when you press any keypad button other than the ON button Instrument Power Time Out When the instrument power has timed out you must press the ON button to turn the instrument back on Variable Gain Mode The Variable Gain mode allows the user to vary signal gain for the Waveform and Vector displays between 45 and 155 The mode is enabled through a menu selection in the Configuration menu The variable gain adjustment tracks between the Waveform and Vector display modes and can be adjusted from the Waveform in Picture display mode When the Variable Gain mode is enabled the message GAIN UNCAL is displayed in the onscreen readout 2 18 WFM90D and WFM91D User Manual Operating Information Vector Display Mode The Vector display mode presents an XY plot of the demodulated chrominance phase and amplitude portion of t
6. type display as selected by front panel button When pushed V axis is inverted at a 1 2 line rate to produce a single vector display REF 1 25 Analog input only REF Measured with color bar signal REF Typically 2 596 Analog input only REF Typically 0 5 Analog input only REF 1 Analog input only REF Measured with 140 IRE 1 V linearity sig nal 5 step 10 step or Ramp with 40 IRE 300 mV of subcarrier REF 1 Analog input only REF Measured with 140 IRE 1 V linearity sig nal 5 step 10 step or Ramp with 40 IRE 300 mV of subcarrier NTSC 50 Hz of Fc PAL 10 Hz of Fac REF Subcarrier Regenerator free runs in ab sence of appropriate signal Reference can be burst of either displayed signal or exter nal reference signal WFMO90D and WFM91D User Manual Appendix A Specifications Table A 5 Vector mode continued Category Description Subcarrier Regenerator Pull In REF Pull In Time Within 1 second with subcar Time rier frequency within 50 Hz 10 Hz for PAL of Fac Subcarrier Regenerator Phase REQ NTSC 2 from Fsc to Fsc 50 Hz or Fsc Shift with Subcarrier Frequency to Fsc 50 Hz Change PAL 2 from Fsc to Fsc 10 Hz or Fsc to Fsc 10 Hz Subcarrier Regenerator Phase REQ 2 from nominal burst amplitude to 6 dB Shift with Burst Amplitude REF Internal or External burst reference Change Subcarrier Regenerator Phase REQ 1
7. Getting Started A AA Product Description The handheld self contained Tektronix WFM90D and WFM91D television waveform monitors can monitor analog and digital signals The monitors provide composite and component waveform displays as well as vector and picture displays These monitors can be used in the traditional in house applications of television production post production and signal transmission In addition their portability allows them to be used in non traditional applications such as field production and system maintenance Features Accepts NTSC PAL composite video or 525 625 Component 270 Mbit serial digital video signals Automatic detection of analog or serial digital signals Built in color display TFT LCD Viewing angle control Electronic graticules Battery or AC adapter powered Menu assisted monitoring operation Audio signal input output Waveform Vector Picture Audio and Waveform in Picture display modes Line select lets you view any single line of video Selectable time out for backlight or instrument power Signal level alarm mode for waveform and audio displays Preset menu to store recall front panel and menu setups Instrument adjustments from front panel see service manual WFMO90D and WFM91D User Manual 1 1 Product Description Tektronix WFM90D OH 0000 WFM090D and WFM91D User Manual Product Description More Information
8. Table A 8 Physical characteristics Category Description Dimensions REF Instrument 5 in 127 mm 3 15 in 80 0 mm 9 6 in 243 8 mm Shipping Box 13 25 in x 13 75 in x 6 in inside 14 in x 14 25 in x 6 25 in outside Weight REF With batteries and pouch 3 lb 13 oz Without batteries and pouch 2 lb 8 oz Shipping weight with packaging 6 lb 8 oz Environmental Characteristics Table A 9 Environmental characteristics Category Description Operating Altitude REQ To 9 842 feet 3000 meters Operating Temperature REQ 0 C to 40 C Vibration Operating REF 15 minutes each axis at 0 015 inch fre quency varied from 10 55 10 Hz in 1 min ute cycles with instrument secured to vibra tion platform Ten minutes each axis at any resonant point or at 55 Hz if no resonant point is found WFM90D and WFM91D User Manual A 11 Appendix A Specifications Table A 9 Environmental characteristics continued Category Description Shock Non Operating REF 100 gs 1 2 sine 11 ms duration 3 shocks per surface 18 total Transportation REF Qualified under NTSC Test Procedure 1A Category II 24 inch drop Humidity REF Will operate at 9596 relative humidity for up to five days A 12 WFM090D and WFM91D User Manual Appendix A Specifications Certification Table A 10 Certifications and compliances Category Standards or description Meets the intent of Directive 89 336 EEC for Electr
9. as gain is varied from 3 dB to 6 dB Shift with Variable Gain Control Subcarrier Regenerator Phase REF 360 continuous rotation Control Range Subcarrier Regenerator Burst Jit REF 0 5 RMS or less ler REF With 140 IRE 1 V composite video input INT or EXT referenced Table A 6 Synchronization Category Description REQ Internal Reference Analog Input Composite video or black burst with sync ampli tudes 40 IRE 300 mV PAL 6 dB Input Requirements Digital Input 270 Mbit 259M REQ External Reference Sync amplitude between 143 mV and 4 V will synchronize sweeps WFM90D and WFM91D User Manual A 9 Appendix A Specifications Table A 6 Synchronization continued Category Description REQ DC Input Impedance Unterminated 15 kQ REF Return Loss 75 Q 40 dB from 50 kHz to 6 MHz With 75 Q termination on instrument power External Reference Input on REF Absolute Maximum Input Voltage 12 VDC plus peak AC Table A 7 Power source Category Description Battery REF 6 C cell batteries or Tektronix NiMH battery pack Tektronix part number 146 0107 01 Battery Charge Time REF Fast Charge 550 mA NIMH only REF Slow Charge 150 mA Power Consumption REF Picture Mode 7 Watts Waveform Mode 9 Watts Vector Mode 9 Watts External Power REQ DC Source of 11 18 Volts A 10 WFM90D and WFM91D User Manual Appendix A Specifications Physical Characteristics
10. B 1 use Replacement s socne tree ido dis B 1 Battery Replacement dete leere XH EX nex B 1 Cleaning and Maintenance de is er E RR ER RAN B 1 Display essnee sune wE EEE UNEKOA GEEAE SRA EAS B 2 Instrument Adjustment 0 0 eee eee eee B 2 Glossary Index iv WEMOOD and WFM91D User Manual Table of Contents List of Figures Figure 1 1 Removing the NiMH battery pack 1 9 Figure 1 2 Inside of the battery compartment showing polarity markings 54 eve eR seas wees 1 10 Figure 1 3 Installing the viewing hood 1 11 Figure 1 4 Installing the desk stand 1 12 Figure 1 5 Packing the Option 33 travel case 1 13 Figure 2 1 WFM90D keypad eese 2 2 Figure 2 2 WFM90D and WFM 1D side panels 2 6 Figure 2 3 Onscreen readout messages 2 7 Figure 2 4 Waveform and Vector menus 2 23 Figure 2 5 Audio Picture and Waveform in Picture MENUS ir hoe UCET QI RE Ca EN A EA EA RUE 2 24 Figure 2 6 Line Select menu eee 2 24 Figure 2 7 Configuration menu eee 2 32 Figure 3 1 NTSC waveform graticule 3 1 Figure 3 2 PAL waveform graticule 3 2 Figure 3 3 NTSC vector graticule 3 4 Figure 3 4 PAL vector graticule ooo oo oo oo 3 5 Figure 3 5 Vector targets NTSC values PAL values in parentheses cese es
11. Figure 3 4 PAL vector graticule Chrominance Vector Targets o oc Blue Y Color reference uL Lage Cyan The chrominance vectors terminate in a system of graticule targets consisting of two boxes a small box inside a large box A sample target is shown in Figure 3 5 The dimensions of the large boxes represent 10 centered on the exact chrominance phase and 20 of chrominance amplitude centered around standard amplitude The dimensions of the smaller boxes represent 2 5 and 2 5 IRE 3 and 5 PAL of chrominance amplitude For the PAL graticule each chrominance vector related to the V burst terminates in targets consisting of two boxes a small box inside a large box The vectors associated with the V burst terminate in the targets consisting of smaller boxes only Differential Phase and Gain Measurement Box WFMO90D and WFM91D User Manual Differential gain dG and differential phase d measurements use the graticule markings located at the outer edge of the B Y or U axis 180 line See Figure 3 6 3 5 Reference V 20 EA D Se EA A ERO c A e Figure 3 5 Vector targets NTSC values PAL values in parentheses SEA 10 do 2 d lt lt 10 dG 20 dG Figure 3 6 Differential gain and phase measurement box WFM090D and WFM91D User Manual Reference Making Vector Measurements Chroma Bandwidth The horizontal and vertical axes of th
12. tion is not saved if the power source is removed before you turn off the instrument with this button Display Mode Selection WFM Pressing the WFM button enters the Waveform display mode VECT Pressing the VECT button enters the Vector display mode AUDIO Pressing the AUDIO button enters the Audio display mode PIX Pressing the PIX button enters the Picture display mode WIP Pressing the WIP button enters the Waveform in Picture display mode The previously selected display mode other than Picture is shown in a 1 4 screen sized window that overlays the Picture display WFMO90D and WFM91D User Manual 2 1 Functional Overview Tektronix WFM90D Press and hold for two seconds to open the digital menu for the selected operating mode Figure 2 1 WFM90D keypad 2 2 WFM90D and WFM91D User Manual Functional Overview Menu Control The menus use a combination of onscreen readout and multi use bezel buttons in conjunction with the arrow buttons to control most of the monitoring functions Menus are entered by pressing one of the MENU CONFIG or LINE SEL buttons Menus are exited by pressing the entry button for the open menu or by entering another menu Menu operation and selections are detailed in Using the Menus starting on page 2 23 MENU Pressing the MENU button toggles an operating menu on and off An operating menu contains monitoring selections that are speci
13. 10 dB headroom setting allows the system amplitude limits to be checked The amplifier limits are reached when the signal becomes clipped which is displayed as a squaring off of the signal peaks Frequency Response Signal frequency response is checked by inputting a known signal frequency into the system and verifying that the signal amplitude does not drop below system requirements usually accepted at 3 dB Headroom The 3 dB headroom setting is used during system setup to verify frequency response of the audio system The 10 dB headroom setting provides viewing of audio signals 3 dB above the system reference level so that any amplifier clipping can be viewed WFM090D and WFM91D User Manual iw eS Appendices A AAA Appendix A Specifications These tables use the following abbreviations Performance Requirement Req All performance requirements in the specification tables are identified with Req and can be assured by completing the Performance Check Procedure located in the service manual Allow a warm up time of 20 minutes Performance requirements in the electrical specifications are valid over an ambient temperature range of 20 C to 30 C The Performance Requirement tolerances listed in the Electrical Specification are doubled over the temperature range of 0 C to 40 C unless otherwise specified Test equipment used to verify Performance Requirements must be calibrated and working within the limits speci
14. 2 16 Input control 2 44 Installation desk stand 1 12 electrical 1 7 mechanical 1 11 travel case 1 13 viewing hood 1 11 WFM90D and WFM91D User Manual Index Instrument calibration 2 13 cleaning B 1 DC power input 2 5 default settings 2 35 keypad illustration 2 2 reset 2 4 service B 1 side panel illustrations 2 6 software version 2 8 time out 2 18 Instrument Accessories 1 6 Instrument options 1 5 J Jumpers 1 7 K Keypad controls 2 1 L LCD display 2 15 LINE SEL button 2 3 Line Select menu 2 37 Line Select mode 2 17 LOW BAT readout 2 8 LUM filter 2 26 MAG 2 26 Measurements 3 1 audio 3 10 audio amplitude 3 10 chroma bandwidth 3 7 WFM90D and WFM91D User Manual dc restorer 3 3 differential phase and gain 3 5 peak white 3 3 vector 3 7 waveform display mode 3 3 Mechanical installation 1 11 MENU button 2 3 Menu control 2 3 Menu operation 2 23 configuration 2 31 line select 2 37 operating 2 25 Menu selections action 2 29 alarm 2 34 alt field 2 37 alt ph 2 34 audio 2 30 back It 2 34 bars 2 34 bright 2 33 color 2 34 comp sel 2 26 dc rest 2 33 default 2 35 EDH rprt 2 26 2 27 2 29 2 30 fields 2 37 filter 2 26 gain 2 26 2 27 grat 2 33 headroom 2 28 hue 2 34 location 2 30 mag 2 26 recall 2 34 ref 2 33 reference dBu 2 28 safe area 2 29 setup 2 34 Index 3 Index shutdown 2
15. Vector and Waveform in Picture display modes WFM 90D and WFM91D User Manual 2 33 Using the Menus Table 2 7 Configure menu choices continued Function Category VECTOR BARS Sets the calibration of the vector chrominance gain to correctly process 75 or 100 amplitude color bar signals SETUP WFM90D only Sets the vector gain to correctly process NTSC input signals with or without setup ALT PH WFM91D only Alternate Phase Turns the PAL V mode on and off When the mode is on the phase reference of the V lines is inverted and then shown as an overlay on the V lines to provide a comparison display PICTURE HUE WFM90D only When HUE is selected the right two Bezel Buttons adjust the hue of the Picture display instrument must be in Picture display mode COLOR The right two Bezel Buttons adjust the color of the Picture display instrument must be in Picture display mode TIME OUT BACKLT You can set the instrument to shut down power to the backlight after 2 minutes or 5 minutes of inactivity SHUTDOWN You can set the instrument to power down after 5 minutes or 10 minutes of inactivity Only functional when the instrument is battery powered ALARMS Turns the alarm on and off for the Waveform and Vector display modes PRESETS STORE Stores the current keypad and menu settings in memory for future recall RECALL Resets the keypad and menu settings to the last settings that were stored i
16. battery compartment see Figure 1 1 To remove the battery pack grasp the batteries close to the wire leads Press in on the top portion of the battery connector tab and then pull up gently To replace the NiMH battery pack use only the Tektronix recharge able NiMH battery pack part number 146 0107 01 Do not use any other battery pack NOTE To prevent a loss of battery power be sure that the battery connector tab snaps on to the jumper housing 1 8 WFM90D and WFM91D User Manual Installation Grasp wire Figure 1 1 Removing the NiMH battery pack WFMO90D and WFM91D User Manual 1 9 Installation Replacing the Alkaline Batteries You can use six alkaline batteries to power the WFM90D and WFM 1D however the battery life may be limited NOTE Always replace all of the alkaline batteries at the same time The polarity of the alkaline batteries must be correct for the instrument to operate The battery compartment is located under the back panel of the monitor To open the compartment turn the screw head at the top of the panel 1 4 turn Replace all of the batteries following the polarity indications on the bottom of the battery compartment which are also shown in Figure 1 2
17. control is configured for AUTO or DIGITAL see Configuration Menu on page 2 31 Then select the desired operating mode Waveform Vector Picture or WIP and hold the MENU button for 2 seconds To exit press the MENU button again Using the Menus Press the bezel button that corresponds to the desired selection on the display When you make a selection changes are displayed immediately To adjust values press the two right bezel buttons while displaying a menu selection such as y TRACE ADJUST A WFMO90D and WFM91D User Manual 2 25 Using the Menus Waveform Menu Press the WFM button and the MENU button to open the Waveform operating menu Hold the MENU button in for two seconds to open the digital menu For more details on menu access see page 2 25 Waveform menu choices are shown in Table 2 2 The Waveform menu tree is shown in Figure 2 4 Table 2 2 Waveform menu choices analog and digital Digital Submenu only Function GAIN Sets the Waveform display mode vertical gain and the Vector display mode gain to X1 or X5 Selects FLAT unfiltered display or LUM low pass filtered for luminance display FILTER SWEEP Selects sweep rate 1H 5 us division 2H 10 us division or 2F two field Turns horizontal gain on or off When set to on additional sweep rates are available 1H MAG 0 5 ms division 2H MAG 1 ms division and 2F MAG magnified by approximately X20 MAG COMP SEL Select
18. flash once per minute when CRC Watch is on even if there are no errors If there are errors the display will flash more frequently CRC readouts A readout block appears on the right side of the display The CRC readouts indicate the following conditions ERRORED SECONDS CRC Watch is turned on FF CRC lt n gt Displays the seconds that were found to contain one or more full field CRC errors A full field CRC error detected in a one second interval causes the number to increment by one FF CRC MISSING Either there is no digital video lock there is no EDH packet in the signal or there is no CRC signal inserted in the signal AP CRC lt n gt Displays the seconds that were found to contain one or more active picture CRC errors An active picture CRC error detected in a one second interval causes the number to increment by one AP CRC MISSING Either there is no digital video lock there is no EDH packet in the signal or there is no CRC signal inserted in the signal ELAPSED lt hh gt H lt mm gt M Displays the hours and minutes that have elapsed since CRC Watch was turned on The display is in hours H and minutes M For example after 3 hours and 24 minutes the display would read 3H 24M The elapsed time can accrue up to 99 hours and 59 minutes WFM090D and WFM91D User Manual Operating Information Display A The LCD will retain an image if the instrument is left on in one display mode for an extended peri
19. following items Signal cables and user manuals for the monitor and generator Handheld monitor viewing hood slipped around the monitor Spare batteries for the handheld monitor 1 2 3 4 5 6 Spare batteries for the handheld generator Handheld generator desk stand and carrying straps AC adapter s Figure 1 5 Packing the Option 33 travel case WFMO90D and WFM91D User Manual 1 13 Installation Incoming Inspection Save the shipping carton and packing materials in case you need to ship the monitor to a Tektronix Service Center for service or repair Check that the following standard accessories are included W User manual m 120 V wall unit power adapter North American W Carrying pouch NOTE If Option 33 is ordered the monitor is placed inside the travel case for shipment To check basic instrument operation use the Tutorial on page 2 39 To verify that the instrument is performing to specifications use the Performance Verification procedure in the optional WFM90D and WFM91D Handheld Waveform Vector Picture amp Audio Monitor Service Manual WFM090D and WFM91D User Manual Installation Packaging for Shipment If you ship an instrument to a Tektronix Service Center
20. modes CRC WTCH WFMO90D and WFM91D User Manual 2 29 Using the Menus WIP Menu Waveform in Picture Press the WIP button and the MENU button to open the Waveform in Picture operating menu Hold the MENU button in for two seconds to open the digital menu For more details on menu access see page 2 25 WIP menu choices are shown in Table 2 5 The WIP menu tree is shown in Figure 2 5 Table 2 6 WIP menu choices analog and digital Digital Submenu only Function WFM Selects the Waveform mode for display in the WIP window VECT Selects the Vector mode for display in the WIP window AUDIO Selects the Audio mode for display in the WIP window LOCATION Selects the position of the WIP window in the Picture display selects from the four corners of the screen EDH RPRT Y Enable or disable the EDH reporting readout at the top center of the display in Waveform and Vector modes CRC WTCH Y CRC Watch Enable or disable the CRC reporting readout on the right side of the display in Waveform and Vector modes 2 30 WFM90D and WFM91D User Manual Using the Menus Configuration Menu The following pages describe the instrument configuration menu shown in Figure 2 7 on page 2 32 Menu categories and functions are described in Table 2 7 on page 2 33 Configure Menu Access To enter the Configuration menu press the CONFIG button To exit the configuration menu press the CONFIG button again Using the Menu Press
21. o 2 5 Video Input and Output Connectors 2 5 Audio Input and Output Connectors sss 2 5 DC Power Input Connector 200 000 2 5 Onscreen Readouls ar e bus 2 7 Readout Description 2 7 Operating Information ccc cece cee ee eee 2 11 Amplitude Alarm Mode 0 0c cece cece ee eee 2 11 Audio Display Mode bellu e eee Seek oe UE we 2 11 Battery or AC Adapter Operation 0 0008 2 12 Cable Report ees deus needs x Weed GR ee ES OE v 2 12 Calibration Mod ues en stas uta das no id 2 13 CRE Watch caia ES Aia 2 13 DI a Gee oe 2 15 EDHAREpOr dls did ps dad Cae teeta es 2 15 Inpt t OUDput rra LS abe ove id e Rte Ss 2 16 Line Select MOodeus sued hr id she de Y VERSA 2 17 Picture Display Mode viue iu t eee E awe ea 2 17 Preset Menu ye ecd ao eo dos ED dr c dpa 2 17 Time Out MOode vox xu RR tins Soe E ed uo wi RA 2 18 Backlight Time Out 2s epi rh mem e RT rs 2 18 Instrument Power Time Out 00 00 e eee 2 18 Variable Gain Mode 4 uo pen ER RR x ead eee id 2 18 Vector Display Mod tsk ews sce adas 2 19 S ger cy eed ous tend ty sane aaa NORTHERN 2 19 Video Input Control esl okie EXE bev ew eee 2 19 Viewing Serial Digital Signals oo oo o 2 19 Waveform Display Mode 00 e cece e ee eee eee 2 20 Video Input Control soda as ee A Eos 2 20 Viewing Serial Digital Signals o oooo o 2 2
22. or similar solvents WFM90D and WFM91D User Manual B 1 Appendix B User Service Display A Cleaning the Exterior Clean the exterior surfaces of the instrument with a dry lint free cloth or a soft bristle brush If dirt remains use a cloth or swab dampened with a 75 isopropyl alcohol solution A swab is useful for cleaning in narrow spaces around the controls and connectors Do not use abrasive compounds on any part of the instrument Interior Interior cleaning and maintenance should be performed by qualified service personnel only Instructions for interior maintenance are provided in the service manual The LCD will retain an image if the instrument is left on in one display mode for an extended period of time This is typical for the LCD display device The retained image will fade over time and that time can be accelerated by leaving the instrument turned off CAUTION LCD Display Image Retention To prevent image retention in the LCD display enable the backlight time out mode or turn the instrument off if the monitor will be left alone for more than two hours Instrument Adjustment B 2 The WFM90D and WFM91D can be adjusted entirely from the front panel after entering the Calibration menu The instrument should only be adjusted by qualified personnel The service manual contains the instructions for adjusting the instrument WFMO90D and WFM91D User Manual AS AAA Glossary EA AA Glossary AP CR
23. sweep length is nominally 12 divisions Equal to line rate of applied video or external sync Equal to half line rate of applied video or external sync REF Displays 2 full fields including the field rate sync between them REF Approximately X20 REF Magnification occurs about the center of the screen REF All timing and linearity specifications ex clude the first and last major divisions of the unmagnified display 10 us division 2LINE Within 2 5 us division 1LINE Within 2 1 us division 2LINE MAG Within 2 0 5 us division 1LINE MAG Within 3 Within 1 REF Measured between the 10 ws and 110 ws points on the 10 ws division 2LINE sweep REF Any portion of a synchronized video sweep can be positioned on screen in all sweep modes WFM90D and WFM91D User Manual A 7 Appendix A Specifications Table A 5 Vector mode Category Chrominance Processing Nomi nal Subcarrier Frequency Fsc Chrominance Processing Chro minance Bandwidth Chrominance Processing V Mode Applicable to PAL operation only Display Vector Phase Accuracy Display Vector Gain Stability Display Quadrature Phasing Display Differential Phase Display Differential Gain Subcarrier Regenerator Pull In Range A 8 Description REF NTSC 3 579545 MHz PAL 4 43361875 MHz REQ Upper 3 dB Point REQ Fasc 500 kHz 100 kHz Lower 3 dB Point Fsc 500 kHz 100 kHz REF
24. the bezel button that corresponds to the desired selection on the display When you make a selection changes are displayed immediately Configuration menu categories are displayed above the left bezel button The selected category is highlighted To scroll through the menu categories press the left bezel button or press the A and y buttons Menu selections within the selected category appear over the right three Bezel Buttons To adjust values press the two right bezel buttons while displaying a menu selection such as y TRACE ADJUSTA NOTE If you adjust picture hue and or color the only way to ensure that the hue and color have been correctly reset is to recall the factory default settings through Configuration PRESETS WFMO90D and WFM91D User Manual 2 31 Using the Menus VIEW W VIEW ADJUST A DISPLAY BRIGHT Y BRIGHT ADJUST 4 TRACE W TRACE ADJUST A INTENS GRAT GRAT ADJUST amp DC REST SLOW FAST INPUT REF INT EXT VARGAIN VARGAIN ON OFF BARS 75 100 VECTOR 4 SETUP NO YES CONFIG HUE YW HUE ADJUST A PICTURE COLOR Y COLOR ADJUST A BACK LT DISABLED 2 MIN 5 MIN TIME OUT SHUTDOWN DISABLED 5 MIN 10 MIN ALARMS OFF ON PRESETS STORE RECALL DEFAULT CABLE RPT OFF ON SETUP CTL OFF ON INPUT CTL AUTO DIGITAL ANALOG Must be in PIX mode to adjust Figure 2 7 Configurati
25. the menu selection ALT FIELD appears This allows you to select the video field in which the selected line is displayed WFMO90D and WFM91D User Manual 2 37 Using the Menus 2 38 WFM90D and WFM91D User Manual SA AAA Tutorial You can use the procedures in this section to learn and or check basic instrument operation If you discover improper instrument operation check the operation of associated equipment If the associated equipment is operating normally refer the WFM90D or WFM91D to qualified service personnel for repair or adjustment For more information about any of the functions described here check Operating Information starting on page 2 11 or the Index at the back of the manual Required Equipment The following equipment is required to perform this procedure m Television Audio Signal source with NTSC PAL Composite Color Bars analog Black Burst or comparable signal with burst and sync SDI 525 625 signal digital Audio tone at adjustable levels For example Tektronix TSG95 Pathfinder NTSC PAL Signal Generator for analog signals and a Tektronix TSG601 Handheld Signal Generator for digital signals Or Tektronix TG2000 Test Signal Generator with an AVG1 module for analog signals and a DVG1 module for digital signals Or Tektronix TG700 Test Signal Generator with an ATG7 module for analog signals and a DVG7 module for digital signals WFM 90D and WFM91D User Manual 2 39 Tutorial
26. two right bezel buttons signifying that they are assigned to adjust the signal gain To restore the menu category list press the left bezel button or turn off the variable gain WFM090D and WFM91D User Manual 9 43 Tutorial d Use the right two bezel buttons to adjust the signal gain to any desired level Select VAR GAIN OFF and notice that the waveform gain is restored to 100 Select VAR GAIN ON notice that the waveform gain returns to your adjusted setting e Turn off the variable gain and press the CONFIG button to exit the Configuration menu 24 Turn setup on off WFM90D Digital signal Composite only When viewing a digital signal in composite mode you can turn setup on and off When you turn setup on the monitor will add 7 5 mV of setup to the signal on the composite display a Provide an SDI 525 signal from the television signal source b Enter the digital waveform operating menu Press the bezel button under COMP SEL to select COMPOSIT The serial digital input signal is encoded into analog and displayed as a composite signal Enter the CONFIG menu and select the SETUP CTL category Press the bezel button to turn setup on and off Notice the 7 5 mV of setup on the signal Turn setup back on From the analog television signal source provide an NTSC color bar signal with setup 25 Set the input control for analog digital or auto a Enter the Configuration menu Select the INPUT CTL menu cate
27. 0 Waveform in Picture Display Mode lesu 2 21 Video Input Controls s urbs diera 2 21 Viewing Serial Digital Signals ooooooo 2 21 WFMO90D and WFM91D User Manual Table of Contents Using the Men s sx wx o uxores AA 2 23 Operating Menus sas rd a ede dd lex COS eee Ee d ans 2 25 Accessing Menils aorta dae 2 25 Accessing Digital Menus 000 cece ee eens 2 25 Using the Mens ua ad Gina eee hate heeds 2 25 WAVE LOL Menu uev Meena a dori nae kaa CA 2 26 Vector Ment d oie o eter a aa 2 27 A toG Sr VER Ed Eo stat ins 2 28 Pict te Men ia oU CR qoe oae ed dn 2 29 WIP Menu Waveform in Picture 0 2 30 Configuration VIS Ru A fares de on dte E CORE EE 2 31 Configure Menu Access ses DE E hvac cag ERN 2 31 Using the Men 4 245 vire ates tate vo PE EE NOTE T 2 31 Eme Select Mec o eeu eru dran deris 2 37 glor ER 2 39 Required Equipment exeniress sce AERE ERREUR i i 2 30 Initial Equipment Connections 0 0 0 ee eee eee 2 40 PrOCSUUIC sie vedo phe C dee dora NOU EC AA 2 40 Restoring Factory Default Settings 2 40 Adjusting the Display vuestras 2 41 Using the Waveform Monitor esses 2 41 Using the Vectorscope ose she dte re ER ee RS 2 46 Using the Picture Monitor eor ve er PI PES 2 48 Using the Waveform in Picture WIP Display 2 50 Using the Audio Monitor 0 0 0 0 e ce eee eee 2 51 Using the Amplitude Alarm
28. 10 0 4 8 AUDIO MENU HEADROOM 3 dB 10 dB ACTION OFF ON WFM90D only TITLE OFF ON WFM90D only SAFE AREA OFF ON WFM91D only V SHIFT OFF ON ANALOG PIX MENU EDH RPRT OFF ON DIGITAL CLR WTCH OFF ON WFM VECT ANALOG AUDIO LOCATION UPPER LEFT UPPER RIGHT WIP MENU LOWER RIGHT LOWER LEFT EDH RPRT OFF ON DIGITAL CLR WTCH OFF ON Hold MENU button two seconds for digital menu Figure 2 5 Audio Picture and Waveform in Picture menus ALL w LINE number A LINE SEL MENU FIELDS ALT FIELD 1 of 2 w F number L number A Line Select menu appears only in WFM VECT modes Figure 2 6 Line Select menu 2 24 WFM90D and WFM91D User Manual Using the Menus Operating Menus The following pages describe the operating menus shown in Figure 2 4 and Figure 2 5 Each operating mode has an associated menu In addition the Waveform Vector Picture and WIP operating modes have an associated digital menu Operating menu selections affect only the display mode in which they appear unless otherwise noted If you switch to a different operating mode the menu for the new mode will display Accessing Menus To enter an operating menu select the desired operating mode such as Waveform or Audio and then press the MENU button To exit press the MENU button again Accessing Digital Menus To enter a digital operating menu first ensure that the input
29. 34 store 2 34 sweep 2 26 title 2 29 trace 2 33 v shift 2 29 vect 2 30 view 2 33 wfm 2 30 MISSING SYNC readout 2 8 NiMH batteries 1 8 NO SYNC 2 8 0 Onscreen readouts 2 7 Operating menus 2 25 Operator s familiarization proce dure 2 39 Options 1 5 Ordering accessories 1 5 P Packaging instructions 1 15 PB readout 2 7 Performance specification A 1 Phone number Tektronix x Picture display mode 2 17 Picture operating menu 2 29 PIX button 2 1 Power connector 2 5 Power source 1 7 Power switch 2 1 PR readout 2 7 Preset menu 2 17 Index 4 Product support contact informa tion x R Readout description 2 7 Readouts 2 7 Rear panel connectors 2 5 RED readout 2 7 Reset 2 4 S Select a component for display 2 26 Service cleaning B 1 fuse replacement B 1 Service support contact informa tion x Setup graticule 3 2 Side panel connectors 2 5 Software version readout 2 8 Specification electrical A 1 Stand 1 12 Stress testing 3 8 Supported video standards 2 16 Sweep rate 2 26 Sweep rate readout 2 8 Sweep rates 3 2 Switches 2 5 T Technical support contact informa tion x Tektronix contacting x Time out mode 2 18 Time out mode 2 18 WFMO90D and WFM91D User Manual Index Travel case 1 13 V packing 1 13 Tutorial 2 39 Variable gain 2 18 required equipment 2 39 VECT button 2 1 Vector display mode 2 19 Vector grati
30. A 11 Table A 9 Environmental characteristics A 11 Table A 10 Certifications and compliances A 13 WFMO90D and WFM91D User Manual A General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as specified Only qualified personnel should perform service procedures To Avoid Fire or Personal Injury Connect and Disconnect Properly Do not connect or disconnect probes or test leads while they are connected to a voltage source Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product Replace Batteries Properly Replace batteries only with the proper type and rating specified Recharge Batteries Properly Recharge batteries for the recommended charge cycle only Use Proper AC Adapter Use only the AC adapter specified for this product Do Not Operate Without Covers Do not operate this product with covers or panels removed Use Proper Fuse Use only the fuse type and rating specified for this product Avoid Exposed Circuitry Do not touch exposed connections and components when power is present Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualifie
31. AMAGES Table of Contents General Safety Summary 0 0 eee eee ee eee eens Vii Prelatura Pu FA eae ane ix Manual Conventions av eh e eee ae o ERAN ix Contacting Tektronix vda rias a eae PSOE RS X Getting Started Product Description oooooooooooooooroososo 1 1 Features da Gig au Id oe Sneek pala neon hE OS 1 1 More Information sou dicatae PCR pom eda ead e mt 1 3 Options and Accessories leeren 1 5 OBS ta edet efe oa a Cats Ceu cta alo Anata 1 5 JACCOSSOLIeSe Pedra 1 6 Installation cy cece ee PER en ee RR e 1 7 Electrical Installation s ed eek CR RR EE ER XD 1 7 POSNVEE SOUL GE uon vx ar sued O Souda ieee aaah ee 1 7 Recharging the NiMH Batteries 1 8 Replacing the Alkaline Batteries o oo oooo o 1 10 Mechanical Install 1 11 MEN IUIS LODO 2 AS A UA 1 11 Desk Staid 6055 pa data 1 12 Travel Case A A E rais uote le ay 1 13 Incoming Inspection 4 euis A ERA EUR ERE 1 14 Packaging for Shipment 2e aii eee rex E ree Ee eia 1 15 Operating Basics Functional Overview een 2 1 Keypad Controls ies doen ce tree cios 2 1 POWCFSWIICD aa ud rr ERIS YS 2 1 Display Mode Selection ike tees 2 1 Men Control ido E ibe ot ara d aue te a 2 3 ATTOW Buttons oss recs eese imo en Seb PES 2 4 Instr ment Reset ecu bed b oer Gate oe eb at ais 2 4 WFM90D and WFM91D User Manual i Table of Contents Side Panel Connectors and Switches o ooooo
32. C Active picture CRC Cyclic Redundancy Check Burst A small reference packet of the subcarrier sine wave sent on every line of video Since the carrier is suppressed this phase and frequency reference is required for synchronous demodulation of the color difference signals in the receiver Chrominance The color information in a television picture Chrominance Signal The high frequency portion of the video signal that is obtained by quadrature amplitude modulation of a 4 43 MHz PAL or 3 58 MHz NTSC subcarrier with R Y and B Y information Color Bars A video test signal typically containing eight basic colors white yellow cyan green magenta red blue and black is used to check chrominance functions of color TV systems There are two basic types of NTSC color bar signals in common use The terms 75 bars and 100 bars are generally used to distinguish between the two types The 75 100 nomenclature specifically refers to the maximum amplitudes reached by the Red Green and Blue signals when they form the six primary and secondary colors required for color bars For 75 bars the maximum amplitude of the RGB signals is 75 of the peak white level For 100 bars the RGB signals can extend up to 100 of peak white Color bar signals can also have different white bar levels typically either 75 or 100 This parameter is completely independent of the 75 100 amplitude distinction and either white level may be associate
33. Coaxial cable 75 Q 2 For example 42 inch RGS9U Tektronix part no 012 0159 00 Audio Cable 3 pin Male to Female XLR For example 3 foot cable Switchcraft part no SC3XXJ Initial Equipment Connections m Connect power to the WFM90D or WFM91D by plugging in the AC power adapter or by installing batteries Connect a 75 color bar signal with setup for NTSC of the correct standard for your instrument from the analog television signal source to the VIDEO IN connector Verify that the VIDEO IN input switch is set to the 75 Q position Connect a black burst or other signal with burst and sync from the analog television signal source to the EXT REF connector on the WFM90D or WFM91D Verify that the EXT REF input switch is set to the 75 Q position Procedure Restoring Factory Default Settings 1 2 Press the CONFIG button to open the Configuration menu Press the bezel button below the Configuration menu category list a few times to select different menu categories The selected menu category is highlighted Corresponding menu selections appear to the right Press the A and w buttons and notice that they also select menu categories Select the PRESETS category and then press the right bezel button to select DEFAULT The front panel controls and menu selections are now set to the factory set defaults The display should be a two line waveform monitor display centered on the graticule baseline WFM090D and WFM91D User Ma
34. EDH Report on page 2 15 b Leave the EDH RPRT selection on or off as desired 29 Enable CRC watch a Press the bezel button under the CRC WTCH menu selection to turn on the CRC watch When the selection is on the readout near the top right of the screen displays errored seconds For more information see CRC Watch on page 2 14 b Leave the CRC WTCH selection on or off as desired The default is off 30 Provide a 75 color bar output NTSC or PAL from the analog television signal source WFM090D and WFM91D User Manual 9 45 Tutorial Using the Vectorscope 31 Press the VECT button to enter the Vector display mode 32 Adjust the vector phase a The up and down arrow buttons adjust the vector phase Press and hold the A button Notice how fast the phase of the waveform changes Press and hold the button Notice that the phase changes at a much faster rate The same is true for the y and buttons b Adjust the burst vector back to the 180 graticule line so that the vector dots land in the target boxes 33 Select 75 or 100 color bar graticule a Selecta 100 color bar output from the television signal source Notice that vector waveform is too large to land in the target boxes b Enter the Configuration menu and select the VECTOR category Select 100 BARS and notice that the vector waveform now lands in the target boxes c Select 75 color bars output from the signal source and return the me
35. User Manual Tektronix WFM90D and WFM91D Handheld Waveform Vector Picture and Audio Monitor 071 1142 01 This document supports firmware version 2 14 and above www tektronix com Copyright Tektronix Inc All 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 Tektronix Inc P O Box 500 Beaverton OR 97077 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 one 1 year 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 a location within the c
36. able until the onset of errors You can use actual coaxial cable or a cable simulator however coaxial cable is the most accurate method You can use the EDH report or the CRC watch to monitor the occurrence of errors As an example using 8281 coax a 5 meter change in length could go from no errors in one minute to more than one error per second WFM090D and WFM91D User Manual Reference Audio Graticule The audio graticule does not provide a horizontal scale since the signal free runs at a two field sweep rate The vertical scales are composed of the audio reference level and the selected headroom setting mirrored around the baseline The audio graticule is illustrated in Figure 3 7 with 3 dB headroom selected and in Figure 3 8 with 10 dB headroom selected 0 dBu 3dB 3dB 0dBu Figure 3 7 Audio graticule with 3 dB headroom selected 10dB 0 dBu 0 dBu 10dB Figure 3 8 Audio graticule with 10 dB headroom selected WFM 90D and WFM91D User Manual 3 9 Reference Making Audio Measurements Basic audio system measurements such as signal amplitude and frequency response can be made using the audio graticule Signal Amplitude Signal amplitude is checked by setting the WFM90D and WFM91D reference level through the Operating menu to match your system requirements The amplitude of the signal display should reach the reference level graticule line during normal operation The
37. age is displayed when the instrument is battery operated and the remaining battery power has reached a critically low level The remaining length of time that the instrument can be operated reliably is dependent on the current operating mode 9 The instrument software version number is displayed when the Configuration menu is open with the DISPLAY category selected 10 The GAIN UNCAL message appears in the Waveform Vector and Waveform in Picture display modes when the Variable Gain is on 11 The MISSING SYNC message appears in all analog video display modes when the signal reference has been lost NO SYNC appears in digital modes when analog sync is missing 2 8 WFM90D and WFM91D User Manual Functional Overview Table 2 1 Video readout messages Message Conditions INPUT CTRL setting DIGITAL Digital video locked to DIGITAL or AUTO 525 on a WFM90D 625 on a WFM91D name of video standard Digital video lock to an DIGITAL or AUTO unsupported standard ANALOG No digital video lock AUTO UNLOCK No digital video lock DIGITAL WFMO90D and WFM91D User Manual 2 9 Functional Overview 2 10 WFM90D and WFM91D User Manual A A Operating Information This section contains information about the different functions of the WFM90D and WFM91D For information about using the menus to access these functions refer to Using the Menus on page 2 23 Amplitude Alarm Mode The Amplitude Alarm mode provides a means for autom
38. arameter Signal reference Filter DC restorer speed Gain Variable gain Sweep Mag Bars Setup WFM90D only Alt Phase WFM91D only Reference dBu Headroom WIP location Alarms Safe action Safe title Vertical shift Backlight time out Instrument time out Cable report Setup control WFM90D function only Input control EDH report CRC watch Default setting Internal Flat Slow X1 Off 2H 2 Line Off 75 Yes Off 0 dBu 3 dB Bottom right Off Off Off Off Disabled Disabled On On Auto On Off WFM90D and WFM91D User Manual Using the Menus Line Select Menu The instrument must be in the Waveform Vector or WIP operating mode before you can display the Line Select menu Enter the Waveform Vector or WIP operating mode Press the LINE SEL button to turn on Line Select mode and open the Line Select menu The number of the selected line and or field displays in the menu bar over the right two Bezel Buttons The Line Select menu is shown in Figure 2 6 on page 2 24 and the Line Select menu choices are shown in Table 2 9 For more information about Line Select refer to Line Select Mode on page 2 17 Table 2 9 Line Select menu choices Selection Function FIELDS ALL Selects all video fields for display The two right bezel buttons select which line number is displayed The menu bar over these two buttons displays the selected line number FIELDS 1 OF 2 When 1 OF 2 is selected
39. atic monitoring of the signal amplitude for the Waveform and Audio displays The mode is enabled through a menu selection in the Configuration menu For the Waveform display mode the portion of the signal that exceeds the 100 IRE 1 0 V PAL graticule line is highlighted For the Audio display mode the portion of the signal that exceeds the menu selected reference level is highlighted The highlighted portion of the signal is also visible in the Waveform in Picture WIP display mode Audio Display Mode The Audio display mode provides a voltage versus time display of a single audio channel The audio voltage is displayed on the vertical scale with time on the horizontal scale at a two field sweep rate Audio reference levels can be set to 10 0 4 or 8 dBu with an additional level available for microphone checks The audio headroom reference level can be set to 3 dB or 10 dB and is for audio signals below or above the reference level respectively WFMO90D and WFM91D User Manual 2 11 Operating Information Battery or AC Adapter Operation The instrument can be powered by six C cell batteries alkaline or NiMH by an internally rechargeable NiMH battery pack or by an AC adapter wall unit with a negative center lead producing 12 VDC The rechargeable NiMH battery pack automatically recharges when the 12 VDC adapter is plugged into the instrument whether instrument power is on or off Alkaline batteries are not recharg
40. ation or an unterminated high impedance input The audio input is a standard 3 pin XLR connector The video output is a BNC connector that will drive a remote monitor or video switcher The audio output is a mini headphone stereo jack which outputs the mono input signal to both stereo channels The audio volume is fixed for each reference level The larger the displayed signal the louder the volume Line Select Mode In Line Select mode you can select any line of video for viewing in either the Waveform or Vector display modes The desired line can be selected from either all video fields or from alternating fields With two field sweep selected in the Waveform display mode the selected line is highlighted in the field display Picture Display Mode The Picture display mode provides an unprocessed full color display of the composite video signal The NTSC Safe Action and Safe Title areas as well as the PAL Safe Area can be highlighted You can view the vertical interval portion of the signal by vertically shifting the display You can adjust the hue and color of the picture display Preset Menu You can use the Preset menu to store the current instrument front panel and menu settings for future use In addition there is a menu selection that sets the front panel and menu settings back to a factory set default These default settings are listed in Table 2 8 on page 2 36 WFMO90D and WFM91D User Manual 2 17 Operating Information
41. cule 3 4 U chrominance targets 3 5 differential phase and gain 3 5 Vector operating menu 2 27 Vertical gain 2 26 2 27 Video and audio input 2 16 Video and Audio Output 2 16 UNLOCK readout 2 9 URL Tektronix x User service B 1 WEM90D and WFM91D User Manual Index 5 Index VIDEO IN connector 2 5 Video input signals 2 16 VIDEO OUT connector 2 5 Video standards 2 16 Viewing hood 1 11 W Waveform display mode 2 20 Waveform graticule 3 1 Waveform operating menu 2 26 Index 6 Waveform in Picture display mode 2 21 Web site address Tektronix x WFM button 2 1 WIP button 2 1 WIP display mode 2 21 WIP operating menu 2 30 Y Y readout 2 7 WFM90D and WFM91D User Manual
42. cy Response at 60 Hz 50 Hz PAL Table A 3 Audio mode Category Reference Levels Measurement Accuracy Frequency Response Maximum Input Level Amplitude DC Input Impedance Audio Output Connector Maximum Power Output A 6 Description REQ REF Back Porch Attenuation of 60 Hz 50 Hz PAL on Input Sig nal Slow Mode lt 20 Fast Mode 290 REF Blanking Level Shift with 10 to 90 APL Change APL changes from 50 to either 10 or 90 will cause blanking level shift of 1 IRE unit 7 14 mV PAL or less REF Blanking Level Shift Due to Presence or Absence of Burst 1 IRE unit 7 14 mV or less shift from no color burst to presence of color burst Description REQ REQ REQ 10 dBu 0 dBu 4 dBu 8 dBu REF Nominal MIC reference 50 dBu 0 5 dB at 1 kHz 0 5 dB from 50 Hz to 20 kHz REF 18 dBu REF z15kQ REF Mini stereo headphone jack REF 250 mW WFMO90D and WFM91D User Manual Appendix A Specifications Table A 4 Horizontal deflection system Description Category Sweep 1LINE Sweep Repetition Rate 2LINE Sweep Repetition Rate 2FLD Sweep Repetition Rate 2FLD Sweep Magnification Sweep Magnifier Registration Timing Accuracy Integral Linearity Horizontal Position REQ REQ REQ REQ REQ REQ REQ REQ Sweep will occur in all Horizontal mode settings with or without synchronization REF Sweep Length Two Line and Two Field
43. d service personnel Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Keep Product Surfaces Clean and Dry WFM90D and WFM91D User Manual vii General Safety Summary viii Safety Terms and Symbols 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 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 the 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 These symbols may appear on the product A EH CAUTION Double Refer to Manual Insulated Battery Recycling This product contains a Nickel battery which must be recycled or disposed of properly For the location of a local battery recycler in the U S or Canada please contact RBRC 800 BATTERY Rechargeable Battery Recycling Corp 800 227 7379 P O Box 141870 www rbrc com Gainesville Florida 32614 WFMO90D and WFM91D User Manual GLO ARA Preface This manual is a guide for operators of the WFM90D and WFM91D Handheld Waveform Vector Picture and Audio Monitor Manua
44. d with either type of bars Because of setup the 75 signal level for NTSC is at 77 IRE The maximum available signal amplitude is 100 IRE WFM90D and WFM91D User Manual Glossary 1 Glossary Composite Video A single video signal containing all of the necessary information to reproduce a color picture Cyclic Redundancy Check CRC Binary polynomial used to generate check information on blocks of data Similar to a checksum but is harder to generate and more reliable Used in data transfer to check if the data has been corrupted It is a check value calculated for a data stream by feeding it through a shifter with feedback terms EXORed back in A CRC can detect errors but not repair them unlike an ECC which is attached to almost any burst of data that might possibly be corrupted CRCs are used on disks ITU R 601 data Ethernet packets and so forth Defaults A set of behaviors specified on every system You can later change these specifications Digital Component Video Digital video using separate color components such as YCbCr or RGB See ITU R BT 601 2 Digital Video A video signal represented by computer readable binary numbers that describe colors and brightness levels dB Decibel A logarithmic unit used to describe signal ratios For voltages dB 20 Log1o V1 V2 EDH Error Detection and Handling Method for recognizing inaccuracies in the serial digital signal It may be incorporated into serial dig
45. e two versions of the Waveform display mode graticule illustrated in Figure 3 1 and Figure 3 2 m NTSC 525 composite video graticule WFM90D only m PAL 625 composite video graticule WFM91D only lt 100 White 100 level 80 60 40 7 5 IRE 20 yr Setup 0 Baseline 20 40 Sync tip Figure 3 1 NTSC waveform graticule WFM 90D and WFM91D User Manual 3 1 Reference 3 2 1 0 4 100 White level 0 8 0 6 0 4 Pe eee LASAS LASAI LASAI ASAJ LAAJA LAADI Baseline 0 2 O 4 Sync tip Figure 3 2 PAL waveform graticule Horizontal Scale The 0 IRE 0 3 V PAL graticule line is divided into 12 major divisions Each division represents a unit of time determined by the SWEEP and MAG settings Line sweep rates appear in the onscreen readout and are as follows SWEEP TIME DIV MAG ON 1H 1LINE 5uS Div 0 5us Div 2H 2LINE 10uS Div 1us Div In 2F two field sweep with MAG on the signal is magnified by X20 and the entire vertical interval can be viewed Vertical Scales The NTSC graticule is scaled in IRE units and extends from 40 to 120 IRE in 10 IRE increments Black level setup is deno
46. e vector graticule contain markings for checking chroma bandwidth A subcarrier frequency sine wave whose amplitude places it on the outer compass rose is used as a reference When the frequency is changed the diameter of the circle should reduce in size At a point equal to 70 7 of full amplitude 3 dB there are gaps in the horizontal and vertical axes This calibration aid makes it possible to check the 3 dB points of the demodulator output amplifiers Digital Video When the WFM90D or WFM91D input control is set to auto or digital you can monitor component video 525 625 component 270 Mbit serial digital video You can enable an error detection handling report EDH RPRT or cyclic redundancy check CRC WTCH to monitor for data transmission errors in the serial video system NOTE The digital signal is encoded into analog and is displayed as an analog vector signal with burst WFMO90D and WFM91D User Manual 3 7 Reference Stress Testing 3 8 Unlike analog systems which tend to degrade gradually digital systems tend to work without fault until they crash When operating a digital system it is desirable to know how much headroom is available how far the system is from the crash point Stress testing consists of changing one or more parameters of the digital signal until failure occurs The amount of change required to produce a failure is a measure of the headroom A good way to stress the system is to add c
47. ecifications are located in the WFM90D and WFM91D Handheld Waveform Vector Picture amp Audio Monitor Service Manual CRC Watch The WFM90D and WFM91D measures data transmission errors in serial video systems using the Error Detection and Handling EDH system documented by the SMPTE RP165 standard The EDH system computes a 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 TSG601 Generator This substitution is effective because sources must generate standard waveforms WFM90D and WFM91D User Manual 2 13 Operating Information Enable CRC Watch You can turn the CRC Watch on and off through any of the digital operating menus except Audio When the CRC Watch is turned on the WFM90D and WFM91D counts and reports all seconds containing at least one error errored seconds The display will
48. ed The message LOW BAT is displayed onscreen when the batteries get critically low on power NOTE To maintain uninterrupted operation when using the wall adapter be sure that the batteries are installed in the instrument Refer to Installation on page 1 7 Only the NiMH battery pack recharges in the instrument Cable Report The cable report when enabled provides a message in the upper right corner of the display gt CABLE indicates that the cable between the signal source and the WFM90D or WFM91D is approximately 200 meters or longer If the cable is shorter than 200 meters there is no message NOTE The CABLE RPT is only available when the instrument is operating in DIGITAL mode In ANALOG mode there is no report 2 12 WFM90D and WFM91D User Manual Operating Information Calibration Mode A CAUTION Do not adjust the instrument without using the instructions listed in the service manual If you do so your instrument may not meet the published specifications If you accidentally change a setting in the Calibration menu press the MENU button to exit this menu Do no select SAVE The Calibration mode lets you adjust the instrument to factory specifications if necessary To enter the Calibration mode press and hold the CONFIG button for three seconds The instrument adjustments are performed entirely from the keypad with the use of specified input signals The instructions for adjusting the instrument to sp
49. fically related to the currently selected display mode Digital menus Pressing and holding the MENU button while in WFM VECTOR PICTURE or WIP mode enters a digital operating menu Operating menus are described in detail in Operating Menus starting on page 2 25 CONFIG Pressing the CONFIG button toggles the Configuration menu on and off The Configuration menu contains selections which control overall instrument monitoring operation Configuration menu selections are described in detail in Configuration Menu starting on page 2 31 LINE SEL Pressing the LINE SEL button toggles the Line Select mode on and off and displays the Line Select menu shown in Table 2 9 on page 2 37 Bezel Buttons The four unlabeled buttons directly below the display are referred to as the bezel buttons These buttons are used for making menu selections and are only enabled while menus are displayed on screen WFM90D and WFM91D User Manual 2 3 Functional Overview 2 4 Arrow Buttons The function of the arrow buttons is dependent on the current state of the instrument For the Waveform and Audio display modes they control signal positioning For the Vector display mode they control vector phase with the A and w buttons providing fine adjustment and the lt and buttons providing coarse adjustment The arrow buttons retain their default function for the reduced display when the Waveform in Picture display mode is selected When the Configurat
50. fied in the service manual Equipment Required List Reference Information Information that amplifies a performance requirement or is of special importance is indicated by REF There is no need to check these items to a specific tolerance WFM90D and WFM91D User Manual A 1 Appendix A Specifications Electrical Characteristics Table A 1 Vertical deflection system Category Frequency Response Analog Input REQ REQ Digital Input REQ REQ Description REF Specifications apply for full screen height video input signal with VARIABLE GAIN off Flat Filter 1 V Full Scale 50 kHz to 6 MHz within 2 of response at 50 kHz Flat Filter X5 Gain 50 kHz to 6 MHz within 5 of response at 50 kHz REF Low Pass Filter 40 dB attenuation at 3 58 MHz NTSC 4 43 MHz PAL Response at 15 kHz does not vary be tween FLAT and LUM low pass filters by more than 1 REF REF Specifications apply for full screen height video input signal with VARIABLE GAIN off Flat Filter 1 V Full Scale 50 kHz to 4 5 MHz 4 Flat Filter X5 Gain 50 kHz to 4 5 MHz 5 REF Low Pass Filter gt 40 dB attenuation at 3 58 MHz NTSC 4 43 MHz PAL Response at 15 kHz does not vary be tween FLAT and LUM low pass filters by more than 1 REF WFM90D and WFM91D User Manual Appendix A Specifications Table A 1 Vertical deflection system continued Category Description Deflection Factor REQ Analog I
51. follow these packaging instructions 1 Attach a tag to the instrument showing the owner complete address and phone number of someone at your firm who can be contacted the instrument serial number and a description of the required service 2 Package the monitor in the original packaging materials If they are not available follow these directions a Use a shipping carton of corrugated cardboard having inside dimensions six or more inches greater than the dimensions of the instrument The carton must have a test strength of at least 250 pounds b Place the monitor in the carrying pouch or surround the instrument with a protective bag c Pack dunnage or urethane foam between the monitor and the carton If using Styrofoam kernels overfill the box and compress by closing the lid There should be three inches of tightly packed cushioning on all sides of the instrument 3 Seal the carton with shipping tape industrial stapler or both WFM90D and WFM91D User Manual 1 15 Installation 1 16 WFM90D and WFM91D User Manual i ASAS Operating Basics AAA Functional Overview This section describes the WFM90D and WFM91D controls and connectors Keypad Controls The keypad front panel is illustrated in Figure 2 1 Power Switch ON The ON button toggles the instrument power on and off The current instrument keypad and menu selections are saved when you turn off the instrument using this button The instrument configura
52. gnal source 37 Press and hold the MENU button in for two seconds to enter the digital Vector operating menu Notice that you can turn the EDH reporting and CRC watch on and off in this menu These functions provide the same readouts as in the Waveform mode see page 2 45 38 From the analog signal source return to an NTSC PAL color bar signal with setup WFMO90D and WFM91D User Manual 2 47 Tutorial Using the Picture Monitor 39 Press the PIX button to enter the Picture display mode Press the MENU button to enter the Picture operating menu 40 Adjust picture color NOTE After you adjust the picture hue and or color if you want to ensure that the hue and color are correctly reset reset the instrument to the factory default settings through the Configuration menu PRESETS category Select PICTURE COLOR and notice that the right two bezel buttons are assigned to adjust the picture color Press the WFM button to enter the Waveform display mode and notice that the bar over the right two bezel buttons now reads ENTER PIX TO ADJ This message reminds you that the picture color can only be adjusted while in the Picture display mode Return to the Picture display mode and press the right two bezel buttons to adjust the picture color to a desired setting WFM90D only Select PICTURE HUE and press the right two bezel buttons to adjust the picture hue to a desired setting Select the PRESETS catego
53. gory Press the bezel button to select ANALOG The instrument is in analog operating mode and will operate like an analog only monitor Press the bezel button and select DIGITAL The instrument is in digital operating mode This setting keeps the monitor from switching between modes when you connect disconnect the video signal Press the bezel button and return the setting to AUTO Leave the setting at AUTO for the remainder of the procedure so that you can switch between analog and serial digital signals WFM090D and WFM91D User Manual Tutorial Digital signal monitoring 26 Provide an SDI 525 625 signal from the digital television signal source 27 Select a component for display a Press and hold the MENU button for two seconds to enter the digital portion of the waveform operating menu b Press the left bezel button to select Y Only the luminance portion of the signal is displayed and a Y readout appears at the top of the screen c Press the bezel button again to select COMPOSIT Notice that the composite signal is displayed This is the digital signal converted to analog 28 Enable EDH reporting a Press the bezel button under the EDH RPRT menu selection to turn the EDH reporting If your television signal source provides error insertion insert CRC errors When EDH errors are present a readout at the top right of the screen displays the errors For more information about the readout see
54. gure 2 5 Table 2 4 Audio menu choices Submenu Function REFERENCE Sets the Audio reference level to MIC 10 0 4 or 8 The dBu reference levels are measured in dBu and the MIC level is for testing microphones HEADROOM Sets the headroom reference level to 3 dB or 10 dB Use the 10 dB setting for viewing signal levels greater than 3 dB over the reference level WFM090D and WFM91D User Manual Using the Menus Picture Menu Press the PIX button and the MENU button to open the Picture operating menu Hold the MENU button in for two seconds to open the digital menu For more details on menu access see page 2 25 Picture menu choices are shown in Table 2 5 The Picture menu tree is shown in Figure 2 5 Table 2 5 Picture menu choices analog and digital Digital Submenu only Function ACTION WFM90D only Turns the Safe Action area markers on and off WFM90D only Turns the Safe Title area markers on and off TITLE SAFE AREA WFM91D only Turns the Safe Area markers on and off V SHIFT Turns the vertical shift on and off The vertical shift allows you to view the vertical interval on the Picture display The vertical interval display does not appear on the VIDEO OUT signal EDH RPRT Enable or disable the EDH reporting readout at the top center of the display in Waveform and Vector modes CRC Watch Enable or disable the CRC reporting readout on the right side of the display in Waveform and Vector
55. he video signal The vector angle represents chrominance phase and the distance from the center represents chrominance amplitude The vector display is useful when making differential gain and phase measurements Gain A full 360 phase shifter and 75 and 100 color bar settings are provided Vector gain is fixed at X1 or X5 or variable from 45 to 155 The gain setting tracks between the Waveform and Vector display modes The V mode PAL only overlays the V axis on the V axis to check the PAL system color encoders Video Input Control You can view an analog or digital signal see Input Output on page 2 16 for signal types and input control Viewing Serial Digital Signals When viewing digital signals you can open the digital Vector menu shown in Figure 2 4 on page 2 23 and turn on the EDH reporting and CRC Watch NOTE The digital signal is encoded into analog and is displayed as an analog vector signal with burst Align the burst vector on the burst vector graticule targets see Figure 3 3 on page 3 4 and Figure 3 4 on page 3 5 You can turn setup on see SETUP CTL in the Configuration Menu page 2 32 or see page 2 46 of the Tutorial WFM90D and WFM91D User Manual 2 19 Operating Information Waveform Display Mode The Waveform display mode provides a voltage versus time display of the video signal with three standard sweep rates 1H 5 us divi sion 2H 10 us division and 2F two field Each line rate s
56. ignal path A receiving device connected to the transmission line may provide the necessary termination Vertical Interval The vertical blanking interval is the time between the end of one video field and the beginning of the next Synchronizing information appears between fields and tells the picture monitor to go back to the top of the screen to begin another vertical scan Abbreviation for luminance Glossary 4 WFM90D and WFM91D User Manual AS AAA Index Index gt CABLE 2 12 A AC adapter 2 12 Accessing menus 2 25 Accessories 1 6 ordering 1 6 part numbers 1 6 Address Tektronix x Adjustment B 2 Alkaline batteries replacement 1 10 Amplitude alarm 2 11 Analog input 2 44 ANALOG readout 2 9 Arrow buttons 2 4 Audio amplitude measurements 3 10 AUDIO button 2 1 Audio display mode 2 11 Audio frequency response mea surements 3 10 Audio graticule 3 9 Audio headroom measurements 3 10 AUDIO IN connector 2 5 Audio operating menu 2 28 Audio out connector 2 5 Auto input control 2 44 Backlight time out 2 18 WFM90D and WFM91D User Manual Battery alkaline 1 10 NiMH 1 8 operation 1 7 2 12 recharging NiMH 1 8 replacing alkaline 1 10 Bezel buttons 2 3 BLUE readout 2 7 C C readout 2 7 Cable report 2 12 Cable report readout 2 8 Calibration mode 2 13 Checkout procedure 2 39 Chroma bandwidth measurements 3 7 Cleaning the instrument B 1 Component d
57. ion menu is displayed the A and w buttons operate the menu category selection while the lt and p buttons retain their default function for the current display mode Instrument Reset Extraordinary conditions may cause the WFM90D and WFM91D controls to become locked or to respond erratically To reset the instrument first press the ON button to turn off the power then press the ON button again while holding down the WIP and LINE SEL buttons The instrument should return to normal operation with the keypad controls and menu selections assigned to the factory set defaults If this reset does not return the instrument to normal operation contact your Tektronix field office or call Tektronix at the phone number listed on page x at the front of this manual WFM090D and WFM91D User Manual Functional Overview Side Panel Connectors and Switches The WFM90D and WFM91D side panels are illustrated in Figure 2 2 Video Input and Output Connectors VIDEO IN Passive BNC input unterminated 75 Q compensated for a video signal A rear panel switch provides an internal 75 Q signal termination NOTE A loop through connector can be used by connecting a BNC T connector to the VIDEO IN BNC Slide the rear panel switch to the HI Z position EXT REF Passive BNC input unterminated 75 2 compensated for an external sync video signal A rear panel switch provides an internal 75 Q signal termination VIDEO OUT A BNC connector used
58. isplay 2 45 Component readout 2 7 COMPOSIT readout 2 7 Composite select 2 26 CONFIG button 2 3 Configuration menu 2 31 ALARMS category 2 34 DISPLAY category 2 33 INPUT category 2 33 INTENS category 2 33 PICTURE category 2 34 PRESETS category 2 34 2 35 TIME OUT category 2 34 VAR GAIN category 2 33 VECTOR category 2 34 Index 1 Index Connectors 2 5 Contacting Tektronix x CRC 2 26 CRC readout 2 8 CRC Watch 2 45 using for stress testing 3 8 D DC power connector 2 5 DC restorer 3 3 Default settings 2 35 Desk stand 1 12 Differential gain measurements 3 5 Differential phase measurements 3 5 Digital input 2 44 Digital menu 2 25 DIGITAL readout 2 9 Digital signal monitoring 2 20 2 45 Digital video standards supported 2 16 Display device 2 15 image retention 2 15 Display mode selection 2 1 Display readout 2 7 E EDH Report 2 45 EDH report 2 15 2 26 2 27 2 29 2 30 EDH report readout 2 8 Electrical installation 1 7 batteries alkaline 1 10 battery NiMH 1 8 Error reporting 2 15 Index 2 ERRORED SECONDS 2 8 EXT REF connector 2 5 EXT REF readout 2 7 F FLAT filter 2 26 Front panel controls 2 1 Fuse replacement B 1 G GAIN 2 26 2 27 GAIN UNCAL readout 2 8 Graticule audio 3 9 vector 3 4 waveform 3 1 GREEN readout 2 7 H Headphone connector 2 5 Headroom 3 10 Hood 1 11 Horizontal gain 2 26 Input control
59. isplay signals from the one channel of composite video input one channel of 525 or 625 SDI digital video or one channel of audio input The supported video standards are m WFM90D analog NTSC composite video digital 525 line component 270 Mbit sec serial digital video SDI m WFM91D analog PAL composite video digital 625 line component 270 Mbit sec serial digital video SDI You can switch the input control through the INPUT CTL category of the Configuration menu select AUTO DIGITAL or ANALOG m When the input control is set to ANALOG the WFM90D or WFM91D operates like an analog only monitor m When the input control is set to AUTO the WFM90D or WFM 1D operates in either analog or digital mode depending on the input signal m When the input control is set to DIGITAL the WFM90D or WFM 1D is always in digital mode You may want to use the digital setting if you will be frequently connecting and discon necting the video signal so that the monitor does not switch back and forth between modes when the signal is missing WFM090D and WFM91D User Manual Operating Information An external reference input allows you to use an external sync signal You can set the monitor for internal or internal reference through the INPUT category of the Configuration menu The video input and the external reference inputs are BNC connectors Both inputs have a rear panel switch providing the choice of an internal 75 Q signal termin
60. ital equipment and employ a simple error indicator Errored Second A second of data transmission containing at least one error Glossary 2 WFM90D and WFM91D User Manual Glossary Field Half of the video lines required to produce a full video frame In interlaced scan systems such as NTSC and PAL the information for one video frame is divided into two fields Two vertical scans overlay the two fields to produce the complete frame In the complete frame adjacent video lines in the picture are from alternate fields Frame Contains all the information required for a complete picture For interlaced scan systems there are two fields in a frame FF CRC Full field CRC Horizontal Blanking Interval The horizontal blanking interval is the time between the end of one horizontal scanning line and the beginning of the next IRE A unit equal to 1 140 of the peak to peak amplitude of the video signal which is typically one volt The 0 IRE point is at the blanking level with the sync tip at 40 IRE and the white extending to 100 IRE IRE stands for Institute of Radio Engineers the organization that defined the unit Headroom The difference between the nominal level average and the maximum operating level just prior to unacceptable distortion in any system or device Because it is a pure ratio there is no unit or reference level qualifier associated with headroom headroom expressed in dB accurately refers to both voltage and p
61. l Structure This manual contains the following information Getting Started provides a product description and a list of available options and accessories Operating Basics describes installation basic instrument operation instrument controls and connectors and general menu features Reference describes each menu selection and explains the different graticules and how to use them to make measurements Appendix A lists electrical and mechanical instrument specifications as well as standards compliance Appendix B provides instructions for preventive maintenance of the instrument Manual Conventions Throughout this manual instrument controls and display readouts appear in ALL CAPITALS WFM90D and WFM91D User Manual ix Preface Contacting Tektronix Phone Address Web site Sales support Service support Technical support 1 800 833 9200 Tektronix Inc Department or name if known 14200 SW Karl Braun Drive P O Box 500 Beaverton OR 97077 USA www tektronix com 1 800 833 9200 select option 1 1 800 833 9200 select option 2 www tektronix com support 1 800 833 9200 select option 3 6 00 a m 5 00 p m Pacific Standard Time This phone number is toll free in North America After office hours please leave a voice mail message Outside North America contact a Tektronix sales office or distributor see the Tektronix web site for a list of offices WFMO90D and WFM91D User Manual
62. n memory 2 34 WFM90D and WFM91D User Manual Using the Menus Table 2 7 Configure menu choices continued Function Category PRESETS DEFAULT Resets the front panel and menu settings to their factory set defaults Monitoring adjust ments such as signal position vector phase and picture hue are also reset The default settings of the keypad and menus are listed in Table 2 8 CABLE Digital only RPT Turns the cable report off and on When cable report is turned on the message gt Cable appears if the cable length is greater than 200 meters There is no message If the cable is equal to or less than 200 meters SETUP WFM90D only has no effect on the WFM91D CTL La Turns the setup on or off for digital signals When setup is on 7 5 IRE of setup is applied to the composite display of the input signal INPUT CTL Specifies the type of input signal the instrument will receive With ANALOG selected the monitor operates like an analog only monitor With AUTO selected the instrument automati cally switches between analog and digital modes based on the input signal With DIGITAL selected the instrument is always in digital mode You might want to use this setting if you will frequently connect and disconnect the input signal so that the instrument doesn t switch into analog mode when no signal is detected WFMO90D and WFM91D User Manual 2 35 Using the Menus 2 36 Table 2 8 Default instrument settings P
63. n the WIP window because it was the last display mode selected Notice that the Picture display does not show the Safe Area s or the vertical shift which were left on in the Picture display mode 48 Press the up and down arrow buttons and notice that they still control signal positioning You have access to all of the Waveform display controls except those located in the Waveform operating menu The operating menu selections for any display mode can only be changed while that display mode is selected 49 Press the right bezel button a few times and notice that the location of the WIP window rotates around the four corners of the Picture display Notice that the left three bezel buttons allow you to change which display mode is shown in the WIP window Digital WIP operating menu 50 Provide an SDI 525 625 signal from the television signal source 51 Press and hold the MENU button in for two seconds to enter the digital WIP operating menu Notice that you can turn the EDH reporting and CRC watch on and off in this menu These functions provide the same readouts as in the Waveform mode see page 2 45 52 From the signal source return to an analog NTSC PAL color bar signal with setup 2 50 WFM90D and WFM91D User Manual Tutorial Using the Audio Monitor 53 Connect the output of the audio source to the AUDIO IN connector on the WFM90D or WFM91D 54 Set the source for a O dB tone output 55 Press the AUDIO button t
64. ne 17 is displayed in the bar over the two right bezel buttons and it is being displayed from ALL video fields Line 17 is displayed on the left with Line 18 displayed on the right in the two line sweep Use the bezel buttons to select Line 30 for display Press the MENU button to enter the waveform operating menu and select 2F SWEEP The selected line is highlighted in both field displays Press the LINE SEL button to return to the Line Select menu Press the left bezel button to select 1 OF 2 FIELDS An additional menu selection of ALT FIELD appears the line number display now includes the field number and the selected line is now highlighted in only the left field display Press the ALT FIELD bezel button and notice that the field number readout changes and that the highlight bar in the waveform toggles between the two fields Turn off the Line Select mode by pressing the LINE SEL button 23 Apply variable gain a b Enter the waveform operating menu and select 2H SWEEP Enter the Configuration menu and select the VAR GAIN category Select VAR GAIN ON and notice that a bar appears over the right two bezel buttons labeled VAR ADJUST the message GAIN UNCAL appears onscreen Press one of the right two bezel buttons just one time The Configuration menu category list over the left bezel button is replaced by the CONFIG label so that you can view the full waveform The up and down arrows appear in the bar over the
65. notice that LUM is highlighted the display changes to show only the luminance portion of the signal b Press the bezel button again to return the filter selection to FLAT 18 Select sweep setting a Press the bezel button below the SWEEP selection and highlight 2F the waveform changes to a two field display b Press the bezel button again to select 1H the waveform changes to a one line display and 5 uS DIV displays onscreen Return the sweep rate to 2H two line 19 Turn MAG on and off a Press the right bezel button to highlight MAG ON The waveform is horizontally amplified The sweep rate readout is 1 uS DIV Use the lt and buttons to view the entire waveform b Select MAG OFF and center the waveform on the display 20 Display DC restorer settings Enter the Configuration menu and select the INPUT category Notice the DC REST menu selection which allows you to change the DC restorer speed between FAST and SLOW 21 Select internal or external reference a Press the bezel button below the REF menu selection to select EXT the EXT REF readout appears onscreen b Remove the cable from the EXT REF input and notice that the waveform free runs the message MISSING SYNC appears onscreen c Return the reference selection to INT WFM090D and WFM91D User Manual Tutorial 22 Display a line in Line Select a Press the LINE SEL button to enter the Line Select mode The selected line number Li
66. nput 1 V Full Scale 1 V input displayed within 1 of 140 IRE REF Flat filter selected REQ Digital Input 1 V Full Scale 1 V input displayed within 296 of 140 IRE REF Flat filter selected REQ X5 Gain Gain accuracy within 596 with 1 V input signal REF X5 Gain Registration lt 1 major division of vertical shift from baseline between unmagnified and magni fied signal REQ Variable Gain Range Input signals between 0 8 V and 2 V can be ad justed to 140 IRE 1 0 V display 160 mV to 400 mV for X5 Gain REQ Position Range 1 V signal can be positioned so that peak white and sync tip can be placed at blanking level with the DC RESTORER on regardless of gain set ting WFM90D and WFM91D User Manual A 3 Appendix A Specifications Table A 1 Vertical deflection system Category Transient Response Analog Input REF posi A 4 REF REF REF REF REF REF continued Description Specifications apply for full screen height video input signal with VARIABLE GAIN off 1 V Full Scale or X5 Gain selected and FLAT filter selected Pulse to Bar Ratio X1 0 99 1 to 1 01 1 X5 0 98 1 to 1 02 1 Preshoot lt 1 Overshoot X1 lt 2 X5 x 496 Ringing X1 lt 296 X5 x 496 Field Rate Tilt lt 1 Line Rate Tilt lt 1 REQ Overscan x 2 variation in baseline of 100 IRE 700 mV 12 5T 20T modulated pulse as it is tioned over the middle 8096 of
67. nu setting to 75 BARS 34 Turn setup on off WFM90D only a Analog signal Enter the Configuration menu select the VECTOR category and then select SETUP NO This means that the monitor will expect a signal without setup Notice that the vector waveform does not land in the target boxes Provide an NTSC color bar signal without setup from the signal source and notice that the vector dots again land in the target boxes Select SETUP YES and set the signal source for a 75 color bar output with setup 2 46 WFM90D and WFM91D User Manual Tutorial b Digital signal Provide an SDI 525 signal from the television signal source Select the SETUP CTL category in the Configuration menu Press the bezel button to turn setup on and off Notice that when you turn setup on the monitor will automatically compensate for setup c Turn setup back on d From the analog television signal source provide an NTSC color bar signal with setup 35 Alternate Phase WFM91D only a Select the VECTOR category from the Configuration menu b Press the bezel button to turn on ALT PH alternate phase The vector waveform now has a mirrored image Adjust the vector phase with the up and down arrow buttons and notice that the mirrored vectors can be overlaid c Turn off the ALT PH and return the burst vector to the 180 graticule line Digital Vector operating menu 36 Provide an SDI 525 625 signal from the digital television si
68. nual Tutorial Adjusting the Display 5 Enter the Configuration menu again 6 Select the INTENS category 7 Use the appropriate bezel button to select TRACE Now the two right bezel buttons are assigned to adjust the trace intensity Adjust the display to the desired intensity 8 Select GRAT and adjust the graticule intensity to the desired level 9 Select the DISPLAY category 10 Select VIEW Press the right two bezel buttons to adjust the viewing angle of the LCD display to the desired angle 11 Select BRIGHT and adjust the display brightness to the desired level 12 Press the CONFIG button to exit the menu Using the Waveform Monitor 13 Press the WFM button to enter the waveform mode 14 Press the MENU button to enter the waveform operating menu 15 The current selection for each monitoring function is highlighted Press the bezel buttons below the functions and notice that the highlight bar moves indicating different menu selections 16 Select X1 X5 gain a Press the left bezel button and notice that X5 is highlighted and that the waveform is vertically amplified Use the A and w buttons to view the entire signal b Select X1 and return the signal to the graticule baseline The gain setting affects both the Waveform and Vector displays since they track together WFMO90D and WFM91D User Manual 2 41 Tutorial 17 Select filter type a Press the bezel button below the FILTER selection and
69. o position the waveform above the 100 IRE graticule line Notice that the portion of the signal exceeding the 100 IRE graticule line is highlighted Using the Presets 64 Enter the Configuration menu select the PRESETS category 65 Select STORE 66 Select DEFAULT Notice that the instrument returned to the Waveform display mode which is the factory set default mode 67 Return to the PRESETS category and select RECALL Notice that the instrument returns to the WIP display mode with the Waveform display mode displayed and the Amplitude Alarm on which was the instrument setting when you selected STORE WFM090D and WFM91D User Manual Tutorial Using the Time Out Mode 68 Select the TIME OUT category from the Configuration menu 69 Set the BACK LT to 2 MIN Wait two minutes and notice that the display goes blank 70 Press any bezel button and notice that the display returns Pressing any keypad button except the ON button will turn the backlight back on 71 The SHUTDOWN ment selections turn off instrument power after the length of time you select 5 MIN or 10 MIN If you enable timed shutdown after the instrument times out press the ON button to turn it back on This concludes the tutorial WFM90D and WFM91D User Manual 2 53 Tutorial 2 54 WFM90D and WFM91D User Manual A Reference Reference This section explains how to take measurements with the WFM90D and WFM91D Waveform Graticule There ar
70. o select the Audio display mode Notice that the audio waveform is free running and that the audio graticule has solid lines labeled 0 dBu representing the reference level and dashed lines labeled 3dB representing the headroom setting 56 Press the MENU button to enter the Audio operating menu a Set the REFERENCE to 4 dBu Notice that the amplitude of the waveform is reduced and that the graticule line label changed to 4 dBu b Set the audio source for a 4 dB output Notice that the signal amplitude is returned to the reference level graticule line c Set the HEADROOM to 10dB Notice that the graticule scale expands so that the headroom graticule lines are now located outside the reference level graticule lines and that they are now labeled 10dB The 10 dB setting allows you to view signals greater than 3 dB over the reference level WFMO90D and WFM91D User Manual 2 51 Tutorial Using the Amplitude Alarm 57 Enter the Configuration menu and select the ALARMS category 58 Select ON to turn on the Amplitude Alarm mode 59 Press the MENU button to return to the Audio operating menu 60 Set the REFERENCE to 0 dBu Notice that the portion of the audio signal exceeding the reference level graticule lines has been highlighted 61 Enter the WIP display mode and notice that the alarm highlight ing is visible there as well 62 Select the Waveform display mode to be displayed in the WIP menu 63 Use the A button t
71. od of time This is typical for the LCD display device The retained image will fade over time and the fading can be accelerated by leaving the instrument turned off CAUTION To prevent image retention in the LCD display enable the backlight time out mode or turn the instrument off if the monitor will be left alone for more than two hours EDH Report EDH Error Detection and Handling detects CRC errors When EDH reporting is on and an appropriate digital signal is applied the WFMO90D or WFM91D reports EDH status in the upper right corner of the display You can turn the EDH report on and off through any of the digital operating menus except Audio The EDH messages indicate the following conditions m NO EDH The signal does not contain an EDH packet m EDH CHK EDH ancillary data packet checksum error Detects corruption of data in ancillary data packet m APCRCER An active picture CRC error has occurred An AP CRC error also indicates a FF CRC error m FFCRCER A full field CRC error has occurred m No readout The EDH packet is present and no checksum or CRC errors are occurring WFM90D and WFM91D User Manual 2 15 Operating Information NOTE You can use the Tektronix VM700T Video Measurement Set with Option 1S for analysis of ancillary data and CRC errors Refer to SMPTE 291M for information about ancillary data and SMPTE RP165 for information about CRC errors Input Output The WFM90D and WFM91D can d
72. omagnetic Compatibility EC Declaration of Conformity EMC Compliances were demonstrated using EN 61326 1997 EMC Product Family Standard for Electrical Equipment for Measurement Control and Laboratory use Emissions EN 61326 Class A Radiated and Conducted Emissions EN 61000 3 2 A14 Conducted Power Line Harmonic Current Immunity 2 IEC 61000 4 2 Electrostatic Discharge Immunity Performance Criterion B IEC 61000 4 3 Radiated RF Electromagnetic Field Immunity34 Performance Criterion A IEC 61000 4 4 Electrical Fast Transient Burst Immunity Performance Criterion B IEC 61000 4 5 Power Line Surge Immunity Performance Criterion B IEC 61000 4 6 Conducted RF Immunity3 Performance Criterion A IEC 61000 4 11 Voltage Dips and Short Interruptions Immunity Performance Criterion B WFM90D and WFM91D User Manual A 13 Appendix A Specifications Category Australia Declaration of Conformity USA FCC Compliance EMC Compliance Equipment Type Safety Class A 14 Standards or description Complies with EMC Framework and demonstrated per Emission standard AS NZS 2064 Industrial Scientific and Medical Equipment Emissions comply with FCC Code of Federal Regulations 47 Part 15 Subpart B Class A Limits Meets the intent of Directive 89 336 EEC for Electromagnetic Compatibility when used with the product s stated in the specifications table Refer to the EMC specificati
73. on menu 2 32 WFM90D and WFM91D User Manual Using the Menus Table 2 7 Configure menu choices Category Submenu Function DISPLAY VIEW The right two bezel buttons adjust the viewing angle of the LCD display up or down to allow optional viewing of the display from different positions BRIGHT The right two bezel buttons adjust the brightness of the LCD display INTENS TRACE The right two bezel buttons adjust the intensity of the signal trace GRAT The right two bezel buttons adjust the intensity of the measurement graticule INPUT DC REST Sets the DC restorer speed to SLOW or FAST REF Sets the video signal reference to INT internal reference or EXT external reference input signal When external reference is selected EXT REF appears in the onscreen readout of the Waveform and Vector displays If the monitor loses its signal reference MISSING SYNC is displayed in the onscreen readout VAR GAIN VAR GAIN Turns the variable gain on and off When the variable gain is on the right two bezel buttons adjust the signal gain the instrument must be in Waveform or Vector display mode The first time you press one of the right two bezel buttons the category list disappears from the left side of the display to provide maximum signal viewing The right two bezel buttons will now adjust the signal gain To see the category list press the left bezel button When the variable gain is on GAIN UNCAL displays onscreen in Waveform
74. on published for the stated products May not meet the intent of the directive if used with other products Test and measuring Class 3 as defined in IEC 61010 1 Annex H WFM90D and WFM91D User Manual Appendix A Specifications Category Standards or description Pollution Degree 2 as defined in IEC 61010 1 Note Rated for indoor use only Pollution Degree A measure of the contaminates that could occur in the environment around and within a product Typically the internal environment inside a product is considered to be the same as the external Products should be used only in the environment for which they are rated Pollution Degree Descriptions Pollution Degree 1 No pollution or only dry nonconductive pollution occurs Products in this category are generally encapsulated hermetically sealed or located in clean rooms Pollution Degree 2 Normally only dry nonconductive pollution occurs Occasionally a temporary conductivity that is caused by condensation must be expected This location is a typical office home environment Temporary condensation occurs only when the product is out of service Pollution Degree 3 Conductive pollution or dry nonconductive pollution that becomes conductive due to condensation These are sheltered locations where neither temperature nor humidity is controlled The area is protected from direct sunshine rain or direct wind Pollution Degree 4 Pollution that generates persistent c
75. onductivity through conductive dust rain or snow Typical outdoor locations 1 Compliance demonstrated using high quality shielded interface cables Minimum immunity test requirement except where noted 3 Performance Criterion Product continues to operate properly and display remains readable Controlled EM environment requirement 1V M WFM90D and WFM91D User Manual A 15 Appendix A Specifications A 16 WEMOOD and WFM91D User Manual EA E Appendix B User Service This section contains instructions for user and preventive mainte nance If the instrument is not functioning properly it should be referred to qualified service personnel or returned to Tektronix for service Packaging directions for shipment are on page 1 15 Fuse Replacement The WFM90D and WFM91D do not have any user replaceable fuses Battery Replacement Instructions for installing or replacing the batteries along with battery operation tips are listed starting on page 1 7 Cleaning and Maintenance This section provides information about how to clean the instrument and how to perform preventive maintenance General Care Protect the instrument from adverse weather conditions The instrument is not waterproof sprays liquids or solvents ji CAUTION To avoid damage to the instrument do not expose it to Do not use chemical cleaning agents they may damage the instrument Avoid chemicals that contain benzene toluene xylene acetone
76. ountry 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 POSSIBILITY OF SUCH D
77. ower Luminance The signal Y that represents brightness or the amount of light in the picture This is the only signal required for black and white pictures For color systems it is obtained as a weighted sum Y 0 3R 0 59G 0 11B of the R G and B signals WFM90D and WFM91D User Manual Glossary 3 Glossary NTSC Acronym for National Television System Committee The organization that developed the television standard currently in use in the United States Canada and Japan Now NTSC is generally used to refer to that standard PAL Acronym for Phase Alternate Line 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 RGB Acronym for Red Green and Blue The three primary colors used in color television s additive color reproduction system These are the three color components generated by the camera and used by the picture monitor to produce a picture Setup In NTSC systems video black is typically 7 5 IRE above the blanking level This 7 5 IRE level is referred to as the black setup level or simply setup Termination An impedance at the end of a transmission line that matches the impedance of the source and of the line itself Proper termination prevents amplitude errors and reflections Video systems use 75 Q transmission lines so a 75 Q terminator must be at the end of any s
78. rcuitry when using a DC power source other than the supplied AC adapter ensure that the DC source is a negative ground 11 18 V system with a negative center lead The DC source should be able to provide 12 W of power WFMO90D and WFM91D User Manual 1 7 Installation Recharging the NiMH Batteries The NiMH batteries begin to charge automatically when you plug the 12 VDC adapter into the instrument whether instrument power is on or off The battery charge time is 6 5 hours when the instrument is off and 20 hours while the instrument is on When the batteries are fully charged the monitor goes into a safe trickle charge mode which can run indefinitely The message LOW BAT is displayed onscreen when the remaining battery power cannot guarantee reliable instrument operation After this message appears the monitor will operate for some length of time which is dependent on the operating mode For optimal battery life and capacity use the NiMH battery pack in full charge discharge cycles fully discharge the battery pack before recharging and then charge the battery pack until it is fully charged A new battery pack will take a few charge discharge cycles to reach full capacity Replacing NiMH Batteries The battery compartment is located under the back panel of the monitor To open the compartment turn the screw head at the top of the panel 1 4 turn The optional NiMH battery pack has a connector that fits on the jumper in the
79. ry from the Configuration menu and select DEFAULT to reset the picture hue and color back to their proper settings 41 Select the Picture display mode Press the MENU button to enter the Picture operating menu 42 WFM90D only Select ACTION ON and notice that the Safe Action area is outlined on the display Select TITLE ON and notice that the Safe Title area is now also outlined WFM090D and WFM91D User Manual Tutorial 43 WFM91D only Select SAFE AREA ON Notice that the Safe Area is outlined on the display Select V SHIFT ON and notice that the display has shifted vertically so that you can see the vertical interval portion of the video signal Digital Picture operating menu 44 Provide an SDI 525 625 signal from the digital television signal source 45 Press and hold the MENU button in for two seconds to enter the digital Picture operating menu Notice that you can turn the EDH reporting and CRC watch on and off in this menu These functions provide the same readouts as in the Waveform mode see page 2 45 46 From the analog television signal source provide an analog NTSC PAL color bar signal with setup WFM090D and WFM91D User Manual 9 49 Tutorial Using the Waveform in Picture WIP Display 47 Press the WIP button to enter the Waveform in Picture WIP display mode Notice that the Waveform display is shown in the 1 4 screen sized window over the Picture display The Waveform display is shown i
80. s a component of the signal for display You can also display a composite signal the digital input signal is converted to analog EDH RPRT Enables or disables the EDH reporting readout at the top center of the display in Waveform and Vector modes CRC WTCH Enables or disables the CRC reporting readout on the right side of the display in Waveform and Vector modes 2 26 WFM90D and WFM91D User Manual Using the Menus Vector Menu Press the VECT button and the MENU button to open the Vector operating menu Hold the MENU button in for two seconds to open the digital menu For more details on menu access see page 2 25 Vector menu choices are shown in Table 2 3 The Vector menu tree is shown in Figure 2 4 Table 2 3 Vector menu choices analog and digital Submenu Function GAIN Sets the Vector display mode gain and the Waveform display mode vertical gain to X1 or X5 EDH RPRT Enable or disable the EDH reporting readout at the top center of the display in Waveform and Vector modes CRC WTCH CRC Watch Enable or disable the CRC reporting readout on the right side of the display in Waveform and Vector modes WFM90D and WFM91D User Manual 2 27 Using the Menus Audio Menu Press the AUDIO button and the MENU button to open the Audio operating menu There is no digital menu for audio For more details on menu access see page 2 25 Audio menu choices are shown in Table 2 3 The Audio menu tree is shown in Fi
81. ssories are shipped with every instrument The standard accessories for the WFM90D and WFM91D and the Tektronix part numbers to use when ordering are listed in Table 1 2 Table 1 2 Standard accessories Description Quantity Tektronix part number WFM90D and WFM91D Handheld Waveform 071 1142 00 Vector Picture amp Audio Monitor User Manual 120 V wall unit power adapter North American tea 119 4538 01 Carrying pouch 116 1330 01 Table 1 3 Optional accessories Description Tektronix part number WFM90D and WFM91D Handheld Waveform Vector Picture 071 1143 00 amp Audio Monitor Service Manual NiMH battery pack 146 0107 01 Instrument desk stand 386 6787 01 Viewing hood 011 0167 01 Travel case for a WFM90D or WFM91D monitor and a TSG95 016 1344 00 or TSG601 signal generator Backlight replacement kit 150 0215 00 1 6 WFM90D and WFM91D User Manual AA A Installation This section describes mechanical and electrical installation and packaging for shipment Electrical Installation Instrument Configuration There are no internal jumper settings for these monitors Instrument configuration is through the CONFIG menu refer to page 2 31 Power Source The WFM90D and WFM91D handheld monitors are designed to operate from either six C cell alkaline batteries a rechargeable NiMH battery pack or an AC adapter wall unit producing 12 VDC CAUTION DC Power Source To avoid possible damage to the instrument ci
82. ted by a dashed line at 7 5 IRE The PAL graticule is scaled in volts and extends from 0 to 1 2 V in 0 1 V increments WFM090D and WFM91D User Manual Reference Making Waveform Measurements Standard Measurements You can make standard amplitude and timing measurements of the signal by positioning the waveform on the graticule The magnifica tion controls aid in measuring small portions of the waveform Peak White With the signal blanking level on the graticule baseline the amplitude of the 100 white reference of a color bar should be on the 100 IRE 1 0 V PAL graticule line The Amplitude Alarm mode highlights any portion of the signal which exceeds the 100 IRE 1 0 V PAL graticule line DC Restorer Use the SLOW setting for the DC restorer to measure hum or other low frequency distortions The FAST setting removes hum from the display so it will not interfere with other measurements The back porch portion of the input signal is used as the clamping point NOTE When using the shuttle mode on VCRs set the WFM90D or WFM91D DC restorer speed to SLOW to prevent the loss of signal synchronization Digital Video When the WFM90D or WFM91D input control is set to auto or digital you can monitor component video 525 625 component 270 Mbit serial digital video In the Waveform operating mode you can use the digital Waveform menu to select a component of the signal for display Green Blue or Red Y Pb Pr or C Yo
83. the screen WFMO90D and WFM91D User Manual Appendix A Specifications Table A 1 Vertical deflection system continued Category Transient Response Digital Input Maximum Absolute Input Level DC Input Impedance Unterminated Video Input Return Loss Video Out Return Loss 752 Video Out Differential Gain 50 APL Video Out Differential Phase 50 APL Description REO REF REF REF REF REF REF REF REF REF Specifications apply for full screen height video input signal with VAR GAIN off 1 V Full Scale or X5 Gain selected and FLAT filter selected Pulse to Bar Ratio X1 0 99 1 to 1 01 1 X5 0 98 1 to 1 02 1 Preshoot lt 1 Overshoot X1 lt 2 X5 x 496 Ringing X1 x 296 X5 x 496 Field Rate Tilt lt 1 Line Rate Tilt lt 1 5 VDC plus peak AC Displays in excess of 200 IRE 1 428 V may cause frequency response aberra tions gt 15 kQ REF REF REF REF REF REF WFM90D and WFM91D User Manual With input switch in the HIZ position gt 40 dB from 50 kHz to 6 MHz gt 15 dB from 6 MHz to 270 MHz With 75 2 termination on gt 30 dB from 50 kHz to 6 MHz Within 196 with a 140 IRE 1 0 V PAL unit display Analog input only Within 1 with a 140 IRE 1 0 V PAL unit display Analog input only A 5 Appendix A Specifications Table A 2 DC restoration Category DC Restorer Clamp Time Frequen
84. to output the instrument display to a remote monitor or video switcher Audio Input and Output Connectors AUDIO IN A standard three pin XLR connector for a single channel of audio input Audio out A standard stereo mini headphone jack for the output of the audio input signal The mono input signal is heard on both stereo channels The audio volume is fixed for each reference level The larger the displayed signal the louder the volume DC Power Input Connector DC IN 11 18V A2 mm plug which accepts a 12 VDC power input using a negative center lead WFMO90D and WFM91D User Manual 2 5 Functional Overview CAUTION DC Power Source To avoid possible damage to the instrument circuitry when using a DC power source other than the supplied AC adapter ensure that the DC source is a negative ground 11 18 V system with a negative center lead The DC source should be able to provide 12 W of power VIDEO IN NN uo 9 Ba VIDEO OUT DC IN 11 18V Figure 2 2 WFM90D and WFM91D side panels 2 6 WFM90D and WFM91D User Manual Functional Overview Onscreen Readouts The WFM90D and WFM91D use onscreen messages to alert you to certain monitoring conditions Figure 2 3 shows example readout messages and their locations 1 2 3 4 5 DIGITAL A nn Y gt 6 11 gt NO SYNC GAIN UNCAL EXT REF touso A ERRORED SECONDS
85. u can also select a Composite display which is the digital signal converted to analog You can enable an error detection handling report EDH RPRT or cyclic redundancy check CRC WTCH to monitor for data transmission errors in the serial video system WFM 90D and WFM91D User Manual 3 3 Reference Vector Graticule The Vector display mode permits measurements of hue in terms of the relative phase of the chrominance signal with respect to the color burst Relative amplitude of chrominance to burst is expressed in terms of the displacement from center radial dimension of amplitude The two versions of the vector graticule are illustrated in Figure 3 3 and Figure 3 4 m NTSC composite vector graticule WFM90D only PAL composite vector graticule WFM91D only R Y Red i Magenta Chrominance gain and emm phase target boxes Yellow ti Color reference e E YL Ld 8 dB Point Burst ns H B Y 180 2 amp WB 0 Differential gain and phase measurement box gt gt E Blue g ow 10096 and 7596 m Burst targets EE Figure 3 3 NTSC vector graticule 3 4 Green Cyan WFM090D and WFM91D User Manual Reference emm V Chrominance gain and phase target boxes X Yellow Magenta V Chrominance gain Y EM and phase target boxes 5 o MG 3 dB Point M 180 gt Differential gain and phase measurement box 100 and 75 Burst targets Green
86. vto 4 oe oe EN CY m e 3 6 Figure 3 6 Differential gain and phase measurement box 3 6 Figure 3 7 Audio graticule with 3 dB headroom selected 3 9 Figure 3 8 Audio graticule with 10 dB headroom selected 3 9 WFM90D and WFM91D User Manual V Table of Contents List of Tables Table 1 1 Options 1 5 nt rb n rehenes 1 5 Table 1 2 Standard accessories 1 6 Table 1 3 Optional accessories 1 6 Table 2 1 Video readout messages 2 9 Table 2 2 Waveform menu choices analog and digital 2 26 Table 2 3 Vector menu choices analog and digital 2 27 Table 2 4 Audio menu choices 2 28 Table 2 5 Picture menu choices analog and digital 2 29 Table 2 6 WIP menu choices analog and digital 2 30 Table 2 7 Configure menu choices 2 33 Table 2 8 Default instrument settings 2 36 Table 2 9 Line Select menu choices 2 37 Table A 1 Vertical deflection system A 2 Table A 2 DC restoration 0 cece cee cee ee eens A 6 Table A 3 Audio mode 0 ecw ee cece eee eens A 6 Table A 4 Horizontal deflection system A 7 Table A 5 Vector mode eese A 8 Table A 6 Synchronization oo oooooooooo A 9 Table A 7 Power source eere A 10 Table A 8 Physical characteristics
87. weep can be magnified X10 to sweep rates 1H Mag 0 5 us division and 2H Mag 1 us division The 2F sweep is magnified by approximate ly X20 Vertical gain is fixed at X1 or X5 or variable from 45 to 155 The gain setting tracks between the Waveform and Vector display modes The signal filters are Flat no filter and Luminance low pass filtered The Line Select mode enables the selection of a single line of video for display Video Input Control You can view an analog or digital signal see Input Output on page 2 16 for signal types and input control Viewing Serial Digital Signals When viewing a digital signal you can open the digital Waveform menu shown in Figure 2 4 on page 2 23 and select a component of the waveform for display The name of the selected component such as GREEN or PB appears in the upper left corner of the display You can also select a composite display which is the digital signal converted to analog This composite display has burst and sync NOTE Sync seen on the Y component is a result of the conversion process for displaying digital signals on this monitor 2 20 WFM90D and WFM91D User Manual Operating Information Waveform in Picture Display Mode The Waveform in Picture WIP screen display mode provides a 1 4 screen sized window over the Picture display for any one of the Waveform Vector or Audio displays The WIP window can be positioned to any one of the four corners of the displa
88. y The Arrow Buttons retain their default function for the display mode in the WIP window Video Input Control You can view an analog or digital signal see Input Output on page 2 16 for signal types and input control Viewing Serial Digital Signals When viewing a digital signal you can open the digital WIF menu shown in Figure 2 5 on page 2 24 and turn the EDH reporting and CRC Watch on and off WFM90D and WFM91D User Manual 2 21 Operating Information WFM090D and WFM91D User Manual SS ASA Using the Menus This section describes the operating and configuration menus for the WFM90D and WFM91D Figure 2 4 and Figure 2 5 show the complete menu structure for all of the operating menus Figure 2 7 on page 2 32 shows the menu structure for the Configuration menu Some menu selections appear only in one or the other model or only in digital mode These special considerations are noted in the following illustrations and tables GAIN X1 X5 FILTER FLAT LUM SWEEP 1H 2H 2F WFM MENU MAG OFF ON ANALOG 31 COMP SEL COMPOSIT GREEN BLUE RED Y PB PR C DIGITAL EDH RPRT OFF ON CRC WTCH OFF ON ANALOG GAIN X1 X5 VECT MENU RPRT OFF ON WTCH OFF ON DIGITAL Hold MENU button two seconds for digital menu Figure 2 4 Waveform and Vector menus WFM 90D and WFM91D User Manual 2 23 Using the Menus REFERENCE dBm MIC

TEK WFM 90D,91D User

Contents

Download Pdf Manuals

Related Search

Related Contents