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User Manual DS1000 Series Television Demodulators 070-9858-01

1. Lr Lr LE Lr Lr LE C N Freq MHz Rec No DS1000 Series User Manual Chan No Freq MHz Rec No 38 39 40 41 47 43 44 45 46 47 48 49 50 51 52 53 54 Chan No S25 526 S27 S28 S29 S30 S31 S32 533 534 535 536 531 538 539 540 541 Freq MHz 333 25 343 25 351 25 359 23 367 25 375 25 383 25 391 25 399 25 407 25 415 25 423 25 431 25 439 25 447 25 455 25 463 25 0 15 Appendix D Channel Tables Table D 11 VHF France channel table Rec Chan Chan Rec Freq No No MHz No MHz MHz 0 A 47 75 4 1 176 00 18 5 208 00 1 55 75 5 2 184 00 19 6 216 00 2 C1 60 50 6 3 192 00 3 C 63 55 7 4 200 00 Table D 12 Italy channel table Rec Chan Chan Freq No No MHz No MHz MHz 0 A 53 75 4 18375 8 Hl 217 25 1 62 25 5 F 19225 9 H2 224 25 2 82 25 6 G 201 25 3 D 175 25 7 H 210 25 Table D 13 VHF Australia channel table Rec Chan Freq Chan Freq Rec Freq No No MHz No MHz MHz 0 0 46 25 5 5 10225 10 9 196 25 1 1 57 25 13825 10 209 25 2 2 64 25 7 6 175 25 12 1 216 25 3 3 06 25 8 7 182 25 4 4 95 25 9 8 189 25 D 16 DS1000 Series User Manual Appendix D Channel Tables Table D 14 VHF China channel table Rec Freq Rec Chan Freq
2. B 13 ABC See eat pice EA B 13 AUD OUT eset quie es pap btt yee yeas B 14 AUD PREP es er remi mcs B 15 BISCHEN B 16 CHANINBELD ey ee ned B 17 DISC Er DE eres eee dat B 18 FREQ a b d Ea dde ops B 19 dut uL d B 20 Query only B 21 MSG nk T B 21 MSG M ee o pt bo Se EC 22 PAPH VOS 23 PRESET aaa Del a B 24 PWD 223 des asp d Exe esr ax s B 24 4 dei ei 25 REPORT Query B 26 SEIT Ss nn B 26 STRAP wann peta ies ue Cae B 28 DS1000 Series User Manual Table of Contents TUNNG un ab adici eic B 29 8 B 30 Appendix D Channel Tables D 1 Appendix E Factory Default Settings E 1 Glossary Index DS1000 Series User Manual Table of Contents List of Figures Figure 1 1 Rear panel connectors 1 5 Figure 1 2 Typical system configuration 1 6 Figure 2 1 DS1000 series front panel 2 1 Figure 2 2 Rear panel connectors for NTSC and PAL models a 2 454 uq ER ERES Ce EA UC I E o 2 3 Figure B 1 Pin assignments for the SERIAL connector 2 DS1000 Series User Manual Table of Contents Lis
3. N 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 AN WARNING Protective Ground CAUTION Double High Voltage Earth Terminal Refer to Manual Insulated vili DS1000 Series User Manual Preface This is the user manual for the DS1000 Series Television Demodula tors It contains information about the DS1000 Series of products which includes DS1001 NTSC DS1002 PAL and DS1003 PAL I Manual Overview Topics covered in this manual are as follows m Getting Started includes a product description as well as installation and first time power on procedures W Operating Basics contains a functional overview describing the front and rear panel controls and connectors and a tutorial guiding the user through basic instrument operation m Reference contains details on setting up unit presets and descrip tions of each preset item and its function m Appendix A provides instrument specifications both electrical and mechanical Appendix B describes remote control
4. 22 N NICAM errors status display 2 6 Noise threshold remote command BTSC B 16 selecting mode in program 3 7 Nomenclature location 1 1 0 Operating basics 2 1 Operating procedures 2 4 Optional accessories rackmount kits 1 3 Options 1 2 Organization of manual ix Outputs 4 5 MHz O P 2 4 audio 2 4 composite 2 4 Index 4 IF O P 2 4 Quad O P 2 3 P Packaging for shipment C 1 PATH remote command 23 Performance requirements specifi cations A 1 Physical characteristics 4 Pin out of serial port B 2 Polling for system status 8 PATH remote command B 23 Post correction See Sound trap Power AC connector 2 3 AC source type 1 4 applying 2 4 cord options 1 2 fuse holder 2 3 power on procedure 1 4 replacing the fuse C 2 self tests at power on 1 5 setting for AC mains 1 4 Power cord optional types 1 2 Power requirements specifications 4 PRESET remote command 24 Product description ix Program adjusting current channel 2 9 configuration of programs 3 3 how to select 2 8 navigating in menu 2 8 PRESET remote command B 24 RECPRT remote command B 25 selecting a channel 3 4 selecting a frequency table 3 3 selecting the frequency 3 4 setting the AFC mode 3 6 DS1000 Series User Manual Index setting the audio mode 3 6 setting the noise threshold 3 7 setting the sound trap 3 7 setting ZCP 3 5 status display
5. Ad Ars Ready response PC gt DLE STX PATH DLE ETX Data phase After receiving the PATH command the television demodulator places its answer in its transmit buffer The PC tries to retrieve the message with a receive cycle but the television demodulator has not processed the answer yet gt DLE ENQ Ad Arr Receive Addressing phase DS1000 gt DLE WACK Not Ready phase The PC repeats the addressing phase until the television demodulator is ready and transmits its data phase There is no data included because the television demodulator has no message PC gt DLE ENQ Ad Arr Receive Addressing phase DS1000 Series User Manual Appendix B Remote Control DS1000 DLE STX Ad Arr DLE ETX Data phase The PC continuously polls the television demodulator gt DLE Ad Ars Send Addressing phase DS1000 DLE ACKO Ad Ars Ready phase PC DLE STX PATH DLE ETX Data phase gt DLE ENQ Ad Arr Receive Addressing phase The television demodulator responds with data when it has a message The data is the path Ad Ars which indicates that a message is available from the responding television demodulator 051000 gt DLE STX Ad Arr data DLE ETX Data phase Getting a Message Polling a television demodulator only tells the PC if a message is available To receive the message you must use the MSG command The foll
6. 2 The circuits that recover R Y and B Y from the composite signal 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 FM Frequency Modulation The process by which the frequency of a carrier signal is varied in proportion to the modulating signal such as an audio signal In the NTSC and PAL television systems audio information is transmitted using FM Frame Contains all the information required for a complete picture For interlaced scan systems there are two fields in a frame Harmonic Distortion Glossary 2 Signal distortion caused by non linearities in a system System non linearities produce multiples of a single frequency signal applied to the the system Harmonic distortion is evident when a pure sine wave applied to a system produces harmonic content at multiples of the sine wave frequency at the output DS1000 Series User Manual Glossary Hum The undesirable coupling of the 50 Hz PAL or 60 Hz NTSC power sine wave into other electrical circuits Intercarrier Sound A method used to recover audio information Sound is separated from video by beating the sound carrier against the video carrier producing a 4 5 MHz NT
7. 2 6 Programming command syntax 11 command types B 5 remote flag B 4 Programming model B 3 PWD remote command B 24 Q QUAD output description 2 3 R Rackmounting 1 7 available kits 1 7 Rear panel description of features 2 3 RECPRT remote command B 25 Reference section 3 1 Remote address for RS485 proto col B 4 Remote control B 1 command descriptions B 13 command syntax B 11 command types B 5 programming model B 3 remote flag B 4 sending and receiving data B 5 Remote flag DISC remote command 18 RS485 protocol B 4 Remote operation flag RS485 protocol B 4 Replacing the fuse C 2 REPORT remote command B 26 DS1000 Series User Manual RF input description 2 4 signal strength 2 5 RS232 configuring 3 8 handshaking 3 9 protocol settings B 2 RS485 configuring 3 8 device address 4 remote address B 4 setting address 3 8 special byte codes B 3 termination 3 9 S Safety certification and compliance A 6 Safety standards 7 SCL protocol 3 Self tests at power on 1 5 Sending and receiving data B 5 Serial addresses for RS485 B 3 baud rate 2 command descriptions B 13 command syntax B 11 command types 5 configuring the port 3 8 pin assignments for port B 2 port connections 1 port protocol B 2 programming model B 3 rear panel connector 2 3 remote flag for 5485 B 4 RS232 handshaking 3 9 RS485 spe
8. D 15 VHF Ireland channel table D 17 D 16 VHF New Zealand channel table D 17 D 17 VHF South Africa channel table D 18 D 18 VHF OIRT channel table D 18 D 19 VHF CCIR channel table D 18 DS1000 Series User Manual D 1 Appendix D Channel Tables Table D 1 CATV HRC channel table Rec Freq Chan Freq Freq No No MHz No MHz MHz 0 1 384 00 1 2 390 00 2 3 396 00 B 4 402 00 4 5 408 00 5 6 414 00 6 420 00 7 8 426 00 8 9 432 00 9 10 438 00 10 11 444 00 11 12 450 00 12 13 456 00 13 14 462 00 14 15 468 00 15 16 474 00 16 17 480 00 17 18 486 00 18 19 492 00 19 20 498 00 20 21 504 00 21 22 510 00 22 23 516 00 23 24 522 00 24 25 528 00 D 2 DS1000 Series User Manual Appendix D Channel Tables Table D 1 CATV HRC channel table cont Rec Freq Rec Chan Freq Rec Chan Freq No MHz No No MHz No No MHz 15 16 534 00 83 84 582 00 91 92 630 00 76 77 540 00 84 85 588 00 92 93 636 00 71 78 546 00 85 86 594 00 93 94 642 00 78 19 552 00 86 87 600 00 94 95 90 00 19 80 558 00 87 88 606 00 95 96 96 00 80 81 564 00 88 89 612 00 96 97 102 00 81 82 570 00 89 90 618 00 97 98 108 00 82 83 576 00 90 91 624 00 98 99 114 00 Freq Rec Chan Freq Chan Freq MHz No No MHz No No MHz 24 26 235 25 25 2 241 25 26 28 241 25 2 29 253 25 28 30 259 25 29 3l 265 25 30 32 271 25 31 33 214 25 32 34 283 25 33 35
9. Ph Peak hold error count shows the maximum error count It is updated if the latest error count exceeds the current peak hold error count three error counts can be cleared by pressing the enter button when in the Nicam error count display mode 5 Product title PRODUCT 051881 SERIAL Ho menalzs4 The product title display shows the product number transmission standard and unit serial number 6 Firmware revision FIRMWARE FLlasm REJISIOM 81 The firmware revision display shows the firmware number and the revision number of firmware in the television demodulator You will need this revision number when reporting problems DS1000 Series User Manual 2 7 Operating Basics 2 8 7 Temperature status TEMPERATURE STATUS HORMAL The temperature status display shows when the internal SAW filter reaches its normal operating temperature The status is one of the following readouts m LOW The television demodulator has not reached its normal operating temperature NORMAL The television demodulator has reached its normal operating temperature m HIGH The television demodulator has exceeded its recom mended operating temperature range Selecting a Program The television demodulator can store and recall 20 different programs presets from non volatile memory Only one of the programs is active at a time Use the PROGRAM button to select a program Pressing t
10. ap state is either 0 for 1 for NICAM Examples Command Result AUD PREF 1 Audio preference is set to NICAM DS1000 Series User Manual B 15 Appendix B Remote Control BTSC Sets or requests the stereo and SAP noise threshold for the BTSC controller The television demodulator must be in the remote state to use this command Syntax BTSC stnt val sapnt val BTSC Arguments Byte offset Format Description 1 lt stnt val byte Sets the stereo noise threshold in the BTSC controller Range is 0 to 15 2 sapnt val byte Sets the SAP noise threshold in the BTSC controller Range is 0 to 15 Examples Command Result BTSC 10 7 BTSC stereo noise threshold set level 10 BTSC SAP noise threshold to level 7 B 16 DS1000 Series User Manual Appendix B Remote Control CHANNEL Sets or requests the selected channel record number and frequency table of the television demodulator Sending the CHANNEL command automatically sets the tuning mode to CHANNEL The television demodulator must be in the remote state to use this command For the query command set TUNING to mode 0 Syntax CHANNEL table channel rec CHANNEL Arguments Description CO C UI WN table chan nel rec DS1000 Series User Manual Selects the table of channels from one of the following NTSC PAL 0 User defined table 0 User defined table CATV HRC UHF EU
11. 00 W User Manual 070 9858 XX this manual Optional Accessories m adapter mounts a single instrument in a standard 19 inch rack m TVGF13 adapter mounts two half rack width instruments side by side in a standard 19 inch rack Use this adapter to mount DS1000 and VM100 series instruments side by side m TVGF14 adapter mounts two half rack width instruments vertically in a standard 19 inch rack Use this adapter to mount 251000 and VM100 series instruments with 1700 series monitor DS1000 Series User Manual 1 3 Getting Started Electrical Installation Before proceeding with product installation please read the Safety Summary at the front of this manual AC Power Source The television demodulator operates from an AC source with a line voltage in the range 95 to 240 VAC and with a line frequency of 50 or 60 Hz The television demodulator is designed to operate from a single phase power source having one of its current carrying conductors at or near earth ground the neutral conductor Only the line conductor is fused for over current protection Systems that have both current carrying conductors live with respect to ground such as phase to phase on multiphase systems are not recommended as power sources A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation Changing the Mains Voltage The unit is designed to operate over the specified ra
12. 133 25 139 25 145 25 751 25 751 25 763 25 769 25 115 25 181 25 181 25 793 25 799 25 DS1000 Series User Manual Appendix D Channel Tables Table D 4 Standard channel table Rec Chan No No 0 2 1 3 2 4 3 5 4 6 5 95 6 96 7 97 8 98 9 99 10 14 11 15 12 16 13 17 14 18 15 19 16 20 17 21 18 22 19 7 20 8 21 9 22 10 23 11 24 12 Freq MHz 55 25 61 25 67 25 1125 83 25 91 25 97 25 103 25 109 25 115 25 121 26 127 26 133 26 139 25 145 25 151 25 157 25 163 25 169 25 175 25 181 25 187 25 193 25 199 25 205 25 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 47 43 44 45 46 47 48 49 Chan No Freq MHz 211 25 217 25 223 25 229 26 235 26 241 26 241 26 253 26 259 26 265 26 211 26 211 26 283 26 289 26 295 26 301 26 307 26 313 26 319 26 325 26 331 27 337 26 343 26 349 26 355 26 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 10 71 72 73 74 Chan No 47 48 49 50 51 52 53 54 25 56 57 58 59 60 61 62 63 64 65 66 67 68 69 10 71 Freq MHz 361 26 367 26 373 26 379 26 385 26 391 26 397 26 403 25 409 25 415 25 421 25 421 25 433 25 439 25 445 25 451 25 457 25 463 25 469 25 475 25 481 25 487 25 493 25 499 25 505 25 DS1000 Series User Manual D 7 Appendix D Channel Tables Table 0 4 Standard c
13. 17 16 18 17 19 18 20 19 21 20 22 21 23 22 24 23 25 24 26 Freq MHz 55 25 61 25 67 25 1125 83 25 115 25 181 25 187 25 193 25 199 25 205 25 211 25 121 25 127 25 133 25 139 25 145 25 151 25 157 25 163 25 169 25 217 25 223 25 229 25 235 25 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 47 43 44 45 46 47 48 49 Chan No 2 28 29 30 3l 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 Freq MHz 241 25 241 25 253 25 259 25 265 25 211 25 211 25 283 25 289 25 295 25 301 25 307 25 313 25 319 25 325 25 331 25 337 25 343 25 349 25 355 25 361 25 367 25 373 25 379 25 385 25 Rec No 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 10 71 72 73 74 Chan No 52 33 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 10 71 72 13 74 15 16 Freq MHz 391 25 391 25 403 25 409 25 415 25 421 25 421 25 433 25 439 25 445 25 451 25 457 25 463 25 469 25 475 25 481 25 487 25 493 25 499 25 505 25 511 25 517 25 523 25 529 25 535 25 DS1000 Series User Manual D 5 Appendix D Channel Tables Table 0 3 CATV standard channel table cont Chan No Rec No 15 16 71 78 79 80 81 82 83 84 85 86 87 88 89 90 91 D 6 Freq MHz Freq MHz Rec Freq No i MHz 115 25 121 25 121 25
14. 25 MHz in 0 25 MHz steps If the selected frequency corresponds to a standard channel then that channel number appears in parentheses Otherwise asterisks appear in place of the channel number This frequency selection DS1000 Series User Manual Reference and the previous channel selection interact Changing either one will change the other 4 ZCP The zero carrier pulse is a special feature of the television demodulator You configure the ZCP feature using the ZCP status ZCP line and ZCP position items The ZCP status item determines whether the ZCP signal is on or off IG PROGRAM Bi T OFF ON The ZCP line setting determines on which video line the ZCP is active For PAL systems the line number range is 6 to 16 and 319 329 For NTSC systems the line number range is 10 to 20 F1 and 10 to 20 F2 COMFIG PROGRAM Bi T ZC LS 16 cF15 m The ZCP position item determines the start position of the ZCP on the chosen video line The five position choices are 0 to 4 IG 21 T eC Po B 4 m gt DS 1000 Series User Manual 3 5 Reference 5 Audio Preference COHFIG PROGRAM 81 T AUDIO PREF ETSC For NTSC systems the audio preference is set to BTSC with no other options For PAL systems the audio preference item determines which audi
15. Ar to 50 decimal 32 hex its SCL protocol addresses are as follows Ad from Table B 2 OF hex Ars 32 hex x 2 64 hex Arr 32 hex x 2 1 65 hex Remote Operation Flag Some commands can be used only when the television demodulator is in the remote controlled state When in remote control state you cannot control the television demodulator from the front panel The front panel display indicates the remote control state with the message CONTROLLED Two commands control the state of the remote flag Use the command PWD to enter the remote control state and set the remote flag to true 1 Use the DISC command to resume front panel control and set the remote flag to false 0 Use the LOG query to get the current state of the remote flag DS1000 Series User Manual Appendix B Remote Control Command Types There are two types of commands m Select commands end with an equal sign such as Select commands set the television demodulator to operate in any mode allowed from the front panel m Query commands end with a question mark such as PRE SET Query commands tell the television demodulator to prepare to send a particular type of data to the PC Commands may be followed by one or more parameters specific to the command Parameters are in binary format Query commands often do not require parameters The response data from a query command may contain several para
16. DS1000 Series User Manual V Table of Contents vi Table D 11 VHF France channel table D 16 Table D 12 Italy channel table D 16 Table D 13 VHF Australia channel table D 16 Table D 14 VHF China channel table D 17 Table D 15 VHF Ireland channel table D 17 Table D 16 VHF New Zealand channel table D 17 Table D 17 VHF South Africa channel table D 18 Table D 18 VHF OIRT channel table D 18 Table D 19 VHF CCIR channel table D 18 Table E 1 Program default settings E 1 Table E 2 System default settings E 2 DS1000 Series User Manual k iO 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 While using this product you may need to access other parts of the system Read the General Safety Summary in other system manuals for warnings and cautions related to operating the system To Avoid Fire or Personal Injury Use Proper Power Cord Use only the power cord specified for this product and certified for the country of use Connect and Disconnect Properly Do not connect or disconnect probes or test leads while they are con
17. SERIAL connector Table B 1 Rear panel SERIAL port connections Pin Function Pin Function 1 RS485 Not Used 2 RS232 TxD RS232 CTS 3 RS232 RxD RS232 RTS 4 Not Used Doo RS485 A 5 Signal Ground Before initiating remote control of the television demodulator set the PC serial port as follows PC Serial Port Settings Speed 9600 bps Protocol 1 start bit 8 data bits no parity 1 stop bit Interface RS485 or RS232 match the television demodulator setting RS232 only use RTS CTS hardware handshaking match the television demodulator setting Handshaking DS1000 Series User Manual Appendix B Remote Control Programming Model The television demodulator uses the BCP Simplified Communication Link protocol SCL With the SCL Protocol you program a PC to send and receive data using standard I O functions found in most programming languages such as C PASCAL and BASIC The SCL protocol supports asynchronous binary communication not text or ASCII based Communication is based on 8 bit bytes ranging from 0 to 255 Table B 2 lists special byte codes used to coordinate data transfers between the PC and the television demodulator For information on how to use these special byte codes refer to Sending and Receiving Data on page 5 Table B 2 Special byte codes Code mne Control monic ASCII Description characters STX Start of data ETX End of data LN DLE Data link escape ACKO Device is read
18. Stereo and SAP noise threshold items are only present on NTSC systems and are used to switch stereo and SAP outputs off when the thresholds are reached The range for both items is to 16 IG PROGRAM Bi T ETSC SAP HT Es gt DS1000 Series User Manual 3 7 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Reference Serial Configuration The Serial Set up selection in the Configure menu allows you to set the communications parameters of the serial port on the rear panel SYSTEM CONFIG e5 CONFIG SERIAL SERIAL SET UP SERIAL MODE 5252 To modify the serial port setup press the CONFIG button to access the Configure menu Use the up and down buttons T and J to select SERIAL SET UP Press the enter button 1 to enter the Config Serial menu Use the up and down buttons T and J to choose and change any of the following selections 1 Serial Mode IG SERIAL SERIAL MODE R5222 4 Sets the mode of the serial port to either RS232 or RS485 Refer to Serial Port Connection on page B 1 for connection information 2 Unit Address COHFIG SERIAL t UHIT ADDRESS 52 1 Sets the RS485 serial mode address A controlling terminal or PC uses this address to identify and control a particular instrument 3 8 DS1000 Series User Manual
19. ber ZCP 8 ZCP position 9 BTSC stereo 00 15 BTSC noise 10 BTSC SAP 0 to 15 BTSC noise Examples Command Result SETT Returns the current settings of the television demodulator DS1000 Series User Manual 27 Appendix B Remote Control STRAP Sets or requests the status of the sound trap The television demodula tor must be in the remote state to use this command Syntax STRAP strap state STRAP Arguments strap state Either 1 for On or 0 for Off Examples Command Result STRAP 1 Sound trap is on 28 DS1000 Series User Manual Appendix B Remote Control TUNING Sets or requests the tuning mode The tuning mode can be by channel frequency or from a programmed preset setting The television demodulator must be in the remote state to use this command Syntax TUNING 7 tune mode TUNING Arguments tune mode may be set to any of three modes m 0 Channel tuning allows tuning by channel number m 3 Frequency tuning allows tuning by frequency in network standard increments W 4 Programmed tuning allows tuning by loading a stored preset Examples Command Result TUNING 4 Returned data of 4 means television demodulator is in program preset mode DS1000 Series User Manual B 29 Appendix B Remote Control ZCP Sets or requests the status of the zero carrier pulse ZCP The television demodulator mus
20. input signal is detected and 2 when no signal is detected The television demodulator must be in the remote state to use this command Syntax REPORT tic state Arguments tic state one byte either 0 to indicate an active signal or 2 to indicate no input signal Examples Result 2 The television demodulator does not detect a signal Command REPORT SETT Sets or requests several operating parameters of the television demodulator With the SETT command you can set several parameters at once instead of using several different commands SETT can replace the following commands FREQ AFC AUD PREF STRAP ZCP BTSC and AUD OUT The new settings are effective immediately The television demodulator must be in the remote state to use this command Syntax SETT settings data SETT Arguments setting data B 26 DS1000 Series User Manual Appendix B Remote Control Byte offset Range Command desc 1 2 freqH_val 45 to 860 FREQ 3 4 freqL val 0 to 999 FREQ 5 status flags bitmap status Setthe bit true 1 to enable the byte associated function b7 x 06 ZCP control b5 audio mode selection bit 1 b4 audio mode selection bit 0 b3 audio preference NICAM b2 Sound trap control bl AFC control 00 off channel frequency Audio mode bits b4 amp b5 B4 B5 PAL mode NTSC mode 0 0 monol mono 1 0 mono2 mono SAP 0 1 monol mono2 stereo 1 1 stereo SAP 6 7 ZCP line num 0 to 21 ZCP
21. use and its interactions with other commands Syntax Gives the valid select and query command forms The required arguments are listed in their proper order For example in the syntax definition PATH lt Ad gt lt Ars gt the arguments lt Ad gt and lt Ars gt are required in the order indicated Arguments The arguments to a command are defined along with their range of values Returns Defines the data returned in response to a command query Data Types Data sent with a command or received from a query may be of the types listed in Table B 3 Table B 3 Data types used in remote communication Data type Description byte 8 bits ordered highest to lowest b7 b6 b5 b4 b3 b2 b1 60 word 16 bits sent as 2 bytes with the MSB first character char Transferred as a single byte representing an ASCII character Char 10 would indicate a string containing 10 characters such as ABCDEFGHI Boolean 0 or 1 representing an off or on state bitmap A string of bits with a definite length where each bit represents the state of a parameter DS1000 Series User Manual B 11 Appendix B Remote Control Data Offset The offset is the relative position of a data item in the transmitted or received data The first bit in a data transfer is number 1 so the first byte has an offset of 1 B 12 DS1000 Series User Manual Appendix B Remote Control Remote Command Descriptions The following remote co
22. 000 Series User Manual 2 5 Operating Basics 2 6 the dashes are replaced by blocks I from the left until all dashes have been replaced RF amplitude 1 mV 2 Audio Output Status AUDIO OUTPUT STATUS HL STEREU STEREO The audio output display shows the current status of the audio signals on the XLR connectors located on the rear panel 3 Program Set up PROGRAM SET Bl CH 615 The program set up display allows you to view the configuration of the current program preset The top line shows the active program number and the bottom lines shows the program items Use the up and down buttons T and J to view the entire configuration by scrolling through the various program items Refer to page 3 3 for a description of each item in the Program set up To change a Program select the Program number here then press the CONFIG button Refer to Program Configuration on page 3 3 for further instructions 4 NICAM Error Count PAL systems only HICHM ERROR Hu Pk B Ph B DS1000 Series User Manual Operating Basics The error count gives the number of NICAM errors per 128 ms period Three versions of the error count are displayed Av Average error count shows the average number of errors over the last ten readings Pk Peak error count shows peak errors and delays while the error count is less than the displayed peak error count
23. 2590 SERIAL QUAI L D VID 4 5 MHz O P IF DIO OUT 52999 SERIAL O R AUDIO 8 Figure 2 2 Rear panel connectors for NTSC and PAL models W Power Input Connector Accepts the AC power cord assembly that is shipped with the product m Fuse Holder Provides a safety fuse for the AC mains input 95 240 V operation The fuse holder is located just above the AC power connector Refer to Appendix C for fuse replacement instructions m Serial Connector Provides a bidirectional serial connection for remote control by a PC The connector is a 9 pin subminiature D type Serial communication using this connector complies with RS232 and RS485 standards For instructions on selecting the RS232 or the RS485 interface refer to Serial Configuration on page 3 8 For remote control commands and techniques refer to Appendix B QUAD OVP Provides a quadrature video output with nominal 75 2 impedance DS1000 Series User Manual 2 3 Operating Basics VIDEO O P Provides a standard 1 volt video output with nominal 75 impedance The NTSC model has one output and the PAL models have two identical VIDEO O P outputs See Figure 2 2 m 4 5 MHz O P NTSC only Provides a buffered 4 5 MHz audio subcarrier output with nominal 75 2 impedance m IF O P Provides a buffered IF output of the full video vestigial side band with all sound carriers NTSC 45 75 MHz PAL 38 9 MHz
24. 289 25 34 36 295 25 35 31 301 25 DS1000 Series User Manual D 3 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Appendix D Channel Tables Table D 2 CATV IRC channel table cont Rec Freq Chan Freq Chan Freq MHz No MHz No No MHz 36 38 307 25 57 59 433 25 78 80 559 25 37 39 313 25 58 60 439 25 79 81 565 25 38 40 319 25 59 61 445 25 80 82 571 25 39 41 325 25 60 62 451 25 81 83 577 25 40 42 331 25 61 63 457 25 82 84 583 25 41 43 337 25 62 64 463 25 83 85 589 25 42 44 343 25 63 65 469 25 84 86 595 25 43 45 349 25 64 66 475 25 85 87 601 25 44 46 355 25 65 67 481 25 86 88 607 25 45 47 361 25 66 68 487 25 87 89 613 25 46 48 367 25 67 69 493 25 88 90 619 25 47 49 373 25 68 70 499 25 89 91 625 25 48 50 379 25 69 71 505 25 90 92 631 25 49 51 38525 70 12 511 25 91 93 637 25 50 52 39125 71 13 51725 92 94 643 25 51 53 39725 72 74 523 25 93 95 91 25 52 54 403 25 73 75 529 25 94 96 97 25 53 55 409 25 74 76 535 25 95 97 103 25 54 56 415 25 75 1 541 25 96 98 109 25 25 5 421 25 76 78 547 25 97 99 115 25 56 58 421 25 TI 19 553 25 0 4 DS1000 Series User Manual Appendix D Channel Tables Table 0 3 CATV standard channel table Rec Chan No No 0 2 1 3 2 4 3 5 4 6 5 7 6 8 7 9 8 10 9 11 10 12 1 13 12 14 13 15 14 16 15
25. 45 25 to 860 25 MHz 5 Serial Set up RS232 RS485 Disabled Enabled Unterminated Terminated Quick Guide To configure the television demodulator follow these procedures 1 Press the front panel CONFIG button to access the Configuration menu 2 Use the up and down buttons T and 4 to select a configuration mode 3 Press the enter button J to enter the selected configuration mode 3 2 DS1000 Series User Manual Reference 4 Use the up and down buttons T and J to select a configuration item Use the left and right buttons lt and to change the selected configuration item 5 Press the CONFIG button after making the desired changes If you have made no changes then the Configuration menu returns If you have made changes then you are asked if you want to save the changes Use the left and right buttons and to select either yes or no then press the enter button 1 6 To exit the configuration mode press the DISPLAY button Program Configuration The Program selection in the Configure menu allows you to modify a Program Before entering the Configure menu you must select the Program number you wish to modify SYSTEM CONFIG CONFIG PROGRAM 81 PROGRAM 81 SET UP FT CAST amp NTSC To modify a Program press the Program button and use the up and down buttons T and J to choose the program number you wish to modify Then press the CONFIG button to access t
26. 5 21 42 639 25 38 59 115 25 5 26 511 275 22 43 647 25 39 60 183 25 6 21 519 25 23 44 655 25 40 61 791 25 7 28 527 25 24 45 663 25 41 62 199 25 8 29 535 25 25 46 671 25 42 63 807 25 9 30 543 25 26 47 679 25 43 64 815 25 10 31 551 25 27 48 687 25 44 65 823 25 1 32 559 25 28 49 695 25 45 66 831 25 12 33 567 25 29 50 703 25 46 67 839 25 13 34 575 25 30 51 711 25 47 68 847 25 14 35 58325 31 52 719 25 48 69 855 23 15 36 59125 2 53 121 25 16 37 599 25 33 54 735 25 DS1000 Series User Manual D 13 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Appendix D Channel Tables Table D 9 UHF China channel table Rec No CO A N FY gt L3 FP N D 14 No 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Freq MHz 471 25 479 25 487 25 495 25 503 25 511 25 519 25 527 25 535 25 543 25 551 25 559 25 607 25 615 25 623 25 Freq Rec MHz 30 31 32 33 34 35 36 37 38 39 40 41 42 43 Chan No 43 44 45 46 47 48 49 50 51 52 53 54 55 56 Freq MHz 751 25 13923 767 25 715 25 783 25 191 25 199 25 807 25 815 25 823 25 831 25 839 25 847 25 855 25 DS1000 Series User Manual Appendix D Channel Tables Table D 10 VHF Europa channel table Rec No CO gt
27. 5 421 25 433 25 439 25 445 25 451 25 457 25 463 25 469 25 475 25 481 25 487 25 493 25 499 25 DS1000 Series User Manual D 9 Appendix D Channel Tables Table 0 5 IRC channel table cont Freq Freq Rec Freq No MHz MHz MHz 601 25 607 25 613 25 619 25 625 25 631 25 637 25 643 25 Freq Rec MHz 216 00 222 00 228 00 234 00 240 00 246 00 252 00 258 00 264 00 210 00 216 00 282 00 wo A Ln c N 10 DS1000 Series User Manual Appendix D Channel Tables Table 0 6 channel table cont Rec Chan Freq Rec Chan Freq Rec Chan Freq No No MHz No No MHz No No MHz 39 35 288 00 61 57 420 00 80 76 534 00 40 36 29400 62 58 426 00 81 7 540 00 41 3 300 00 63 59 432 00 82 18 546 00 42 38 306 00 64 60 438 00 83 79 552 00 43 39 312 00 40 318 00 61 44400 84 80 558 00 45 41 324 00 66 62 450 00 85 81 564 00 46 42 330 00 67 63 456 00 86 82 570 00 4 43 336 00 6g 64 462 00 87 83 576 00 48 44 34200 69 65 468 00 88 84 582 00 49 45 348 00 70 66 474 00 89 85 588 00 50 46 354 00 5 47 360 00 71 67 480 00 90 86 594 00 52 48 366 00 72 68 486 00 91 87 600 00 53 49 372 00 73 69 492 00 92 88 606 00 54 50 378 00 74 70 498 00 93 89 612 00 55 51 38400 75 71 504 00 94 90 618 00 56 52 390 00 76 72 510 00 95 91 624 00 57 53 396 00 40200 77
28. 67 75 330 00 339 75 MHz 110 00 789 75 MHz 168 00 169 75 MHz 340 00 349 75 MHz 190 00 809 75 MHz 350 00 359 75 MHz 810 00 829 75 MHz 360 00 369 75 MHz 830 00 849 75 MHz 370 00 379 75 MHz 850 00 860 25 MHz 380 00 389 75 MHz 390 00 399 75 MHz 400 00 409 75 MHz DS1000 Series User Manual 3 11 Reference Table 3 2 Frequency response adjustment bands cont Low band Mid band High band 410 00 419 75 MHz aro 430 00 439 75 MHz jun simis Contrast Adjustment The Contrast Adjust selection in the Configure menu allows you to set the contrast of the front panel LCD display To modify the contrast press the CONFIG button to access the Configure menu Use the up and down buttons T and J to select Contrast Adjust Press the enter button 1 to enter the Contrast Adjustment menu SYSTEM CONFIG T CONTRAST ADJUSTMENT COMTEHST ADJUST 4 LIGHTER DARKER Use the left and right buttons and to set the contrast lower or higher as appropriate for the ambient light level Press the enter button 1 when you have finished 3 12 DS1000 Series User Manual Reference User Defined Channel Table The User Channel Table selection in the Configure menu allows you to store several custom channel and frequency combinations in the User Channel Table To create or modify the User Channel Table press the CONFIG button to access
29. 73 516 00 96 92 630 00 59 55 408 00 78 74 522 00 97 93 636 00 60 56 414 00 79 75 528 00 98 94 642 00 DS1000 Series User Manual D 11 Appendix D Channel Tables Table D 7 Broadcast channel table Rec No CO A N c N N eae me rnme meae me wi N C CO N D 12 Chan No 2 uU A WW 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Freq MHz 55 25 61 25 67 25 11 25 83 25 175 25 181 25 187 25 193 25 199 25 205 25 211 25 411 25 411 25 483 25 489 25 495 25 501 25 507 25 513 25 519 25 525 25 531 25 Chan No Freq Rec MHz 46 47 48 49 50 51 52 53 54 25 56 57 58 39 60 61 62 63 64 65 66 67 Chan No 48 49 50 51 52 53 54 59 56 57 58 59 60 61 62 63 64 65 66 67 68 69 Freq MHz 675 25 681 25 687 25 693 25 699 25 105 25 711 25 117 25 123 25 129 25 735 25 141 25 141 25 153 25 159 25 165 25 711 25 711 25 783 25 789 25 795 25 801 25 DS1000 Series User Manual Appendix D Channel Tables Table D 8 UHF Europa channel table Rec Chan Freq Rec Chan Freq Rec Chan Freq No No MHz No No MHz No No MHz 0 21 471 25 17 38 607 25 34 55 143 25 1 22 479 25 18 39 615 25 35 56 151 25 2 23 487 25 19 40 623 25 36 57 159 25 3 24 495 25 20 41 631 25 37 58 767 25 4 25 503 2
30. A 02176 FAX 781 665 0780 TestEquipmentDepot com Operating Basics w s Operating Basics The DS1000 Series Television Demodulators are typically used as part of a system that includes video and audio measurement equipment such as the Tektronix VM100 Series Automated Measurement Set Typical equipment connections are described in the Functional Check procedure on page 1 8 and are shown in Figure 1 2 on page 1 6 The television demodulator configuration system allows the store and recall of system settings through the use of programs presets program settings are saved in the television demodulator non volatile memory when the unit is turned off The following procedures use factory settings for the illustrations your display will vary if you have changed the settings Functional Overview This section describes the front panel and rear panel features and connectors Front Panel Features This section describes the front panel controls which are illustrated in Figure 2 1 models have the same display and controls Tektronix 051000 Television Demodulator CONFIG Figure 2 1 DS1000 series front panel DS1000 Series User Manual 2 1 Operating Basics m Front Panel Display The 2 line by 20 character liquid crystal display LCD is used to present unit configuration and status information The LCD uses supertwist technology allowing a w
31. Control and Laboratory Use European Union Com Low Voltage Directive 73 23 EEC Amended by 93 68 EEC liance EN61010 1 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Additional Compliance IEC1010 1 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use DS1000 Series User Manual A 7 Appendix A Performance Specifications A 8 DS1000 Series User Manual See Appendix B Remote Control This appendix describes how to remotely control the television demodulator This appendix provides the following information W Serial port connection m Programming model m Command syntax descriptions m Alphabetical list of commands Serial Port Connection CAUTION Connecting or disconnecting cables while the television demodulator is powered on can result in damage to its input circuits The rear panel SERIAL connector allows remote control of the television demodulator using a PC controller The connector is a 9 pin subminiature D type with female contacts Table 1 and Figure B 1 give the pin configuration for the SERIAL connector The SERIAL connector provides a configurable serial communica tions port You can configure the serial port as either RS232 or RS485 using the Serial Configuration menu Refer to page 3 8 DS1000 Series User Manual B 1 Appendix B Remote Control B 2 9 8 7 6 Figure 1 Pin assignments for the
32. ROPA CATV IRC CHINA CATV STD VHF EUROPA STDOFST VHF FRANCE IRC VHF ITALY HRC VHF AUSTRALIA B CAST VHF CHINA VHF IRELAND 9 VHF N ZEALAND 10 VHF S AFRICA 11 VHFOIRT VHF CCIR 12 Selects the record number in the selected table The table record number corresponds to a particular channel number Refer to Appendix D for the record number associated with each channel number in the selected B 17 Appendix B Remote Control Examples Result NTSC Table 1 CATV HRC frequency table is selected Channel record 18 selected channel number 19 PAL UHF EUROPA frequency table selected Channel record 18 selected channel number 39 Command CHANNEL 1 18 DISC Puts the television demodulator in the local state which enables the front panel controls and clears the remote flag Use the command PWD to enter the remote state and set the remote flag Syntax DISC Arguments none B 18 DS1000 Series User Manual Appendix B Remote Control FREQ Sets or requests the demodulation frequency Setting the frequency automatically sets the tuning mode to FREQ TUNE See the command description for TUNING The television demodulator must be in the remote state to use this command Syntax FREQ lt freqH_val gt lt freqL_val gt FREQ Arguments Byte offset Format Description 1 lt freqH_val gt word Sets the integer part of the frequency i
33. Rec Chan Freq No MHz No No MHz No No MHz 0 1 47 75 4 5 85 25 8 9 192 25 1 2 57 75 5 6 168 25 9 10 200 25 2 3 65 75 6 176 25 10 11 208 25 3 4 11 25 7 8 184 25 11 112 216 25 Chan Freq Chan Freq No MHz No No MHz 0 A 45 75 3 D 175 25 6 G 199 25 1 B 53 75 4 183 25 7 207 25 2 61 75 5 F 19125 18 J 215 25 Freq Rec Chan Freq Chan Freq MHz No No MHz No No MHz 0 1 45 25 4 5 182 25 8 9 210 25 1 2 55 25 5 6 189 25 9 10 217 25 2 3 62 25 6 196 25 10 11 224 25 3 4 175 25 7 8 203 25 DS1000 Series User Manual D 17 Appendix D Channel Tables Table D 17 VHF South Africa channel table Rec Freq Freq Rec Freq No No MHz MHz MHz 0 4 175 25 3 7 199 25 6 10 223 25 1 5 18325 4 8 207 25 7 1 231 25 2 6 191 25 5 9 21525 8 13 241 43 Freq Freq Rec Freq No MHz MHz MHz 0 1 49 75 4 5 93 25 8 9 199 25 1 2 59 25 5 6 175 25 9 10 207 25 2 3 71 25 6 7A 183 25 10 11 215 25 3 4 85 25 7 8 191 25 112 223 25 Table D 19 VHF CCIR channel table Rec Freq Freq Rec Freq No No MHz MHz MHz 0 2 48 25 4 6 18225 18 10 210 25 1 3 55 25 5 18925 9 1 217 25 2 4 62 25 6 8A 196 25 10 12 224 25 3 5 17525 7 9 203 25 D 18 DS1000 Series User Manual SE Appendix E Factory Default Settings This section lists the factory default settings for user definable settings All programs p
34. Reference The RS485 communications protocol allows connection of multiple units to one host Each device connected to the host must have a unique address The range for the unit address is 32 to 63 3 RS232 RTS CTS status COHFIG SERIAL T RTS CTS nr DISABLED gt ENABLED Enables or disables hardware handshaking on the serial port when in the RS232 serial mode 4 RS485 termination SERIAL 25485 TERMINATED T UNTERMINATED m TERMINATED Enables or disables termination at the television demodulator in the RS485 serial mode Enable termination when the television demodulator is the last device in a multi drop system Select unterminated when it is not the last device DS1000 Series User Manual 3 9 Reference Frequency Response Configuration In the television demodulator system there are two levels of frequency response adjustment The first is factory set and cannot be adjusted from the front panel The second is the manual frequency response item which allows minor adjustments to the frequency response SYSTEM CONFIG T FREB RESP 615 25MHz FREGUEHCY RESPOHSE 4 ADJUST 82 Use caution when changing the manual frequency response and do so only when connected to equipment that can measure the changes to frequency response The changes to frequency response affect only th
35. SC or 5 5 MHz PAL IF that contains the sound information 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 Linear Distortion Distortions that are independent of signal amplitude 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 and B signals Modulated When referring to television test signals this term implies that chrominance information is present For example a modulated ramp has subcarrier on each step Modulation A process that moves information around in the frequency domain in order to facilitate transmission or frequency domain multiplex ing Non Linear Distortion Signal distortion that does not increase at the same rate as the signal amplitude NTSC National Television System Committee The organization that developed the television standard currently in use in the United DS1000 Series User Manual Glossary 3 Glossary States Canada and Japan Now NTSC is generally used to refer to that standard PAL Phase Alternate Line One of the television systems used i
36. Test Equipment Depot User Manual 1 800 517 8431 Tektronix DS1000 Series Television Demodulators 070 9858 01 Test Equipment Depot 800 517 8431 99 Washington Street Melrose 02176 FAX 781 665 0780 TestEquipmentDepot com Table of Contents General Safety Summary vii Preisce zes oy ex doen qe VE rue ix Getting Started Product Desenplon 23 35 m osa uten es 1 1 Physical Dimensions 1 2 Options creer tard q pf 1 2 Standard Accessories 1 3 Optional Accessories 1 3 Electrical Installation 1 4 AC PEE pis 1 4 Changing the Mains Voltage 1 4 Power Om Procedure 2255523500 ae usn dest odore no 1 4 Mechanical Installation 1 6 Custom Installation 1 7 Rackmount Information 1 7 buncional Check 34a ue RO RERO E GERA Ra ok 1 8 Operating Basics Functional Overview 2 1 Front Panel Features ene er se 2 1 Rear Panel Connectors 2 3 Operating 2 4 Apply Ne POWER 2 4 Selecting Display Modes 2 5 Se
37. The nominal impedance is 75 Q This output is available for re modulation or monitoring 75 2 terminated m RF Input T Provides RF signal input with a sensitivity of 20 to 30 dBmV and nominal 75 62 impedance AUDIO OUT L Provides a BTSC stereo left channel or mono channel output for NTSC systems For PAL systems it provides a NICAM FM audio output left channel or language 1 dual mode AUDIO OUT Provides a BTSC stereo right channel or second audio program SAP output for NTSC systems For PAL systems it provides NICAM FM audio output right channel or language 2 dual mode Operating Procedures 2 4 This section describes how to correctly apply power to the television demodulator and how to operate the instrument Applying Power 1 Apply an appropriate mains power source to the television demodulator through the supplied power cord There is no power switch 2 The front panel LCD briefly displays the starting self test message before starting the self tests Each of the self tests displays a different test message If any of the tests fail a test failure message appears and the unit waits for you to press a button before it continues with the remaining tests DS1000 Series User Manual Operating Basics Once the self tests complete the unit initializes itself which takes about 1 second to perform if the internal non volatile memory is valid If the memory has been corrupted or damaged
38. a PC DLE ENQ Ad Ars Addressing phase DS1000 DLE ACKO Ad Ars Ready response PC DLE STX Data DLE ETX Data phase The PC addresses a television demodulator that is not ready ignores the not ready response and sends data PC DLE ENQ Ad Ars Addressing phase DS1000 DLE Aborted ready response PC DLE STX Data DLE ETX Data phase The PC can ignore the not ready response and transmit the addressing phase and data phase sequentially In this case the television demodulator aborts the not ready response after receiving the first byte of the data phase The PC receives only a DLE character When sending data Ad and Ars can be replaced by FF hex a broadcast address When the television demodulator sends a ready response it will send its real address You can use this broadcast address to determine the address of a television demodulator The wild card remote address is always a send address phase Send Data Phase The send data phase begins with a command and may be followed by one or more parameters specific to the command Two techniques for sending data are possible The PC addresses a television demodulator that is ready and sends data PC DLE ENQ Ad Ars Addressing phase DS1000 Series User Manual Appendix B Remote Control DS1000 DLE ACKO Ad Ars Ready response PC DLE STX Data DLE ETX Data phase The PC addresses a television dem
39. arrier 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 B Y One of the color difference signals used in the NTSC and PAL systems It is obtained by subtracting luminance Y from the blue camera signal B 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 Composite Video A single video signal containing all of the necessary information to reproduce a color picture DS1000 Series User Manual Glossary 1 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Glossary CW Continuous Wave A separate subcarrier sine wave used for synchronization of chrominance information dB Decibel A logarithmic unit used to describe signal ratios For voltages dB 20 1 V1 V2 Demodulator In general any device that recovers the original signal after it has modulated a high frequency carrier In television it refers to one of the following descriptions 1 Aninstrument such as the Tektronix DS1001 which takes video in its transmitted form modulated onto the picture carrier and converts it to baseband
40. ay will show the current frequency channel setting Apply an RF signal feed from an appropriate television standard for your model of television demodulator to the RF input Use a 75 Q coaxial cable The RF source should match the current frequency channel setting If not refer to the Operating Basics section for information on selecting a new frequency channel Connect the video output VIDEO either to a picture monitor waveform monitor or other monitoring equipment Ensure that this connection is terminated in 75 Check for a valid video display and if possible a nominal 1 Vpp signal level Connect the audio outputs AUDIO OUT R and AUDIO OUT L to a suitable audio monitoring device For example use the Lindos LA102 Audio Measuring Set Check for a nominal 0 dBm level Connect the IF output 45 75 IF on the DS1001 model or 38 9 MHz on the DS1002 and DS1003 models to 100 MHz oscilloscope terminated in 75 Q Check for a modulated RF signal at 45 75 MHz Connect the 4 5 IF output DS1001 model only to a 100 MHz oscilloscope terminated in 75 Q Check for a nominal 700 mVpp 48 dBmV signal This concludes the functional check If your television demodulator failed any check in this procedure review your connections terminations and instrument settings A continued failure may indicate the need for repair 1 8 DS1000 Series User Manual Test Equipment Depot 800 517 8431 99 Washington Street Melrose M
41. cial byte codes B 3 RTS CTS handshaking 3 9 selecting the mode 3 8 Index 5 Index selecting the port protocol 3 8 sending and receiving data B 5 setting the port address for RS485 3 8 setting unit address for RS485 3 8 termination for RS485 3 9 Serial number location 1 1 Set up See Installation SETT remote command 26 Settings default E 1 Shipping information C 1 Signal strength measuring 2 5 Sound trap selecting mode in program 3 7 Specifications A 1 audio 3 certifications and compliances A 5 environmental characteristics 4 System status displaying 2 5 T Temperature operational status 2 8 Index 6 Termination for RS485 serial communication 3 9 TUNING remote command 29 V Version number location 1 1 Video specifications 2 Video outputs 4 5 MHz O P 2 4 composite 2 4 IF O P 2 4 quadrature 2 3 Z ZCP remote command 30 selecting in program 3 5 Zero carrier pulse setting in pro gram 3 5 DS1000 Series User Manual
42. cifications power requirements Category Line Voltage Ranges Power Consumption Line Frequency Fuse Description 95 to 240 10 30 VA Maximum 50 60 Hz 1 6AT 250 V 20 mm ceramic Table A 4 Environmental characteristics Category Operating Temperature Storing Temperature Operating Altitude Non operating Altitude Relative Humidity maximum operating Description 5 035 20 C to 75 6500 ft maximum 2 000 m 50 000 ft maximum 15 000 m 80 for temperatures up to 31 C decreasing linearly to 50 at 40 C Table 5 Physical characteristics Category Dimensions Weight 4 Description Height 1 8 in 46 mm Width 8 1 in 206 mm Depth 17 3 in 440 mm Net Weight 4 8 105 2 2 kg DS1000 Series User Manual Appendix A Performance Specifications Table A 6 Certifications and compliances Category EC Declaration of Conformity EMC Austrailia New Zealand Declaration of Conformity EMC FCC Compliance EC Declaration of Conformity Low Voltage Approvals Description Meets intent of Directive 89 336 EEC for Electromagnetic Compatibility Compliance was demonstrated to the following specifications as listed in the Official J ournal of the European Communities EN 50081 1 Emissions EN 55022 Class B Radiated and Conducted Emissions EN 60555 2 AC Power Line Harmonic Emissions EN 50082 1 Immunity IEC 801 2 Electrostatic Discharge Im
43. dio outputs and IF output signals You can set tuning conditions for stored programs which are held in non volatile memory Tune the signal by channel frequency or preset program Twenty presets can be stored and recalled with different configurations Most instrument functions are controllable through the remote serial interface Connection is through the SERIAL connector 9 pin on the rear panel The interface type RS232C or RS485 is configured through the Serial Config menu With the RS485 protocol you can set unique addresses for multiple units and control them all remotely Physical Dimensions The dimensions of the television demodulator are length 1 8 inches 46 mm width 8 1 inches 206 mm and depth 17 3 inches 440 mm In a 19 inch 483 mm rack it is a half rack wide by one rack unit high Options You can purchase the television demodulator with several options and accessories Table 1 1 lists the power cord options Table 1 1 Power cord identification Plug configuration Option number North America Standard 125V 15A Plug NEMA 5 15P 1 2 DS1000 Series User Manual Getting Started Table 1 1 Power cord identification cont Plug configuration Option number United Kingdom Standard Accessories Your television demodulator includes the standard accessories listed below Standard North American Power Cord 161 0066 00 m Two 250 V 1 6 1 6AT replacement fuses 159 0366
44. e and the television demodulator returns the data gt DLE Ad Arr Addressing phase DS1000 DLE STX Ad Arr Data DLE ETX Ready response and data phase DS1000 Series User Manual B 7 Appendix B Remote Control B 8 If the byte 10 hex is part of the data this byte is sent twice so that it is not confused with DLE ETX 10 hex which ends the data phase Polling for Status Messages If a television demodulator has a message it does not send it to the PC because more than one television demodulator can be connected to the same remote interface bus To avoid data contention the PC uses polling to check for messages Polling is done with the PATH command PATH returns an empty string if the television demodulator has no message and returns the path if a message is available The path contains the addresses Ad and Ars see Addresses on page 3 The following example is one continuous polling communication between the PC and the television demodulator The values for Ad Ars and Arr can be calculated according to instructions on page B3 The PC addresses a television demodulator that is busy repeats the addressing phase until the television demodulator returns a ready phase then the PC sends the PATH command PC DLE ENQ Ad Ars Send Addressing phase DS1000 gt DLE WACK Not Ready response PC gt DLE ENQ Ad Ars Send Addressing phase DS1000 gt DLE ACKO
45. e current active frequency which is shown on the top line of the frequency response configuration display You can adjust several frequencies which are stored in the television demodulator non volatile memory Due to memory limitations within the television demodulator it is impractical to store frequency response adjustments for every possible frequency so the adjustments are possible only for the range of frequencies listed in Table 3 2 3 10 DS1000 Series User Manual Reference Table 3 2 Frequency response adjustment bands Low band Mid band High band 40 00 47 75 MHz 454 25 469 75 MHz 48 00 55 75 MHz 470 00 489 75 MHz 56 00 63 75 MHz 490 00 509 75 MHz 64 00 71 75 MHz 510 00 529 75 MHz 72 00 79 75 MHz 210 00 219 75 MHz 530 00 549 75 MHz 80 00 87 75 MHz 220 00 229 75 MHz 550 00 569 75 MHz 88 00 95 75 MHz 230 00 239 75 MHz 570 00 589 75 MHz 96 00 103 75 240 00 249 75 MHz 590 00 609 75 MHz 104 00 111 75 250 00 259 75 MHz 610 00 629 75 MHz 112 00 119 75 260 00 269 75 MHz 630 00 649 75 MHz 120 00 127 75 210 00 279 75 MHz 650 00 669 75 MHz 128 00 135 75 280 00 289 75 MHz 670 00 689 75 MHz 136 00 143 75 290 00 299 75 MHz 690 00 709 75 MHz 144 00 151 75 300 00 309 75 MHz 710 00 729 75 MHz 152 00 159 75 MHz 310 00 319 75 MHz 130 00 749 75 MHz 160 00 162 75 320 00 329 75 MHz 150 00 769 75 MHz 163 00 1
46. figure AFC mode 3 6 audio noise threshold 3 7 BTSC stereo and SAP noise thresholds 3 7 Index 2 channel table 3 13 display contrast 3 12 frequency response 3 10 frequency table 3 3 menu hierarchy 3 1 operation 3 1 overview of Configure menu 3 1 programs 3 3 quick guide 3 2 RS232 handshaking 3 9 RS485 address 3 8 RS485 termination 3 9 selecting a channel 3 4 selecting Audio mode 3 6 selecting display modes 2 5 selecting frequency 3 4 selecting from menu 3 2 selecting ZCP 3 5 serial mode 3 8 serial port 3 8 sound trap 3 7 user defined channel table 3 13 Connection serial port pin assignments B 2 to AC power 1 4 Connectors rear panel 2 3 Contrast adjustment 3 12 Controls front panel 2 1 Custom channel table 3 13 Custom installation 1 7 D Default settings E 1 Description of product 1 1 Device address for RS485 proto col B 4 DISC remote command B 18 Display adjusting contrast 3 12 DS1000 Series User Manual Index description 2 2 Display modes audio output status 2 6 firmware revision 2 7 instrument identification 2 7 NICAM error count 2 6 program set up 2 6 selecting 2 5 system status 2 5 temperature status 2 8 E Electrical installation 1 4 Electrical specifications A 4 Environmental characteristics 4 F Factory settings E 1 Features front panel 2 1 rear panel 2 3 Firmware revision disp
47. hannel table cont Chan No Rec No 15 16 17 78 79 80 81 82 83 84 85 86 87 88 89 90 91 0 8 Freq MHz Freq MHz Rec Freq No i MHz 115 25 121 25 121 25 133 25 139 25 145 25 751 25 751 25 763 25 769 25 755 25 781 25 181 25 793 25 799 25 DS1000 Series User Manual Appendix D Channel Tables Table 0 5 IRC channel table Rec Chan No No 0 2 1 3 2 4 3 1 4 5 5 6 6 95 7 96 8 97 9 98 10 99 1 14 12 15 13 16 14 17 15 18 16 19 17 20 18 21 19 22 20 7 21 8 22 9 23 10 24 11 Freq MHz 55 25 61 25 67 25 13 25 19 25 85 25 91 25 97 25 103 25 109 25 115 26 121 26 127 26 133 25 139 25 145 25 151 25 157 25 163 25 169 25 175 25 181 25 187 25 193 25 199 25 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 Chan No 12 13 Freq MHz 205 25 211 25 217 25 223 26 229 26 235 26 241 26 241 26 253 26 259 25 265 25 271 25 21125 283 25 289 25 295 25 301 25 307 25 313 25 319 25 325 25 331 25 337 25 343 25 349 25 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 10 71 72 73 74 Chan No 46 47 48 49 50 51 52 53 54 55 56 57 58 69 60 61 62 63 64 65 66 67 68 69 10 Freq MHz 355 25 361 25 367 25 373 25 379 25 385 25 391 25 397 25 403 25 409 25 415 25 421 2
48. he Configuration menu The top level selection is Program Press the enter button 4 to enter the Program Config menu Use the up and down buttons T and 4 to choose and change any of the following selections 1 Frequency tables PROGRAM Bi FT CAST CHTSC 2 4 m gt DS1000 Series User Manual 3 3 Reference 3 4 The television demodulator contains a wide variety of frequency tables that list the channel assignments used in many countries The channel assignments cover the standard television frequency spectrum You can select a frequency table using the FT item Only one frequency table can be active for an individual program but different programs can use different frequency tables Appendix D includes a complete list of the frequency tables 2 Channel IG PROGRAM 81 f CH 2 655 25 2 it m gt Use the channel item CH to select channel from the chosen frequency table The channel frequency appears in brackets after the channel number This channel selection and the following frequency selection interact Changing either one will change the other 3 Frequencies COMFIG PROGRAM B1 T 615 25 383 If the required frequency is not contained in any frequency table you can manually set the frequency using the frequency item Fv The frequency range is 45 25 MHz to 860
49. he PROGRAM button brings up the program selection display The the first line displays the current active program number and the second line displays the program channel and frequency PROGRAM SELECT 84 T CH 59 Fwi6is 2 Use the up and down buttons T and J to select from the 20 stored programs As each program number appears its program configuration becomes active When you reach the required program number pressing the display button exits the program selection mode The selected DS1000 Series User Manual Operating Basics program becomes the active program and will be recalled the next time you power on the unit Adjusting the Current Program You can temporarily adjust the channel number and frequency while in the system status display Use the up and down buttons T and J to change the channel and the left and right buttons to change the frequency The changes you make are temporary and will be lost when you select another display mode or remove the AC power DS1000 Series User Manual 2 9 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Operating Basics 2 10 DS1000 Series User Manual O O S Reference Reference This section describes how to configure the television demodulator to fit your application Configuring Operation The television demodulator has many configurable parameters which it stores
50. ide viewing angle The LCD is illuminated with an LED back light which enables its use in areas with low light levels The display contrast is adjustable in the Configure menu as described on page 3 12 in the Reference section m DISPLAY button Use the display button to step through the several display modes Each press of the button steps to the next display mode When the last display mode is reached the next press of the display button returns to the first display mode m PROGRAM button Use the program button to enter the program selection mode m CONFIG button Use the configuration button to modify unit settings m UP and DOWN buttons T and 4 Use the up and down buttons to scroll through the program set up and program configuration items When the unit status display is active the up and down buttons can be used to temporarily change the current channel number m LEFT and RIGHT buttons lt and gt Use the left and right buttons to make changes to program configuration items When the unit status display is active the left and right buttons can be used to temporarily change the current frequency ENTER button 4 Use the enter button to enter the required configuration mode and to accept configuration changes 2 2 DS1000 Series User Manual Operating Basics Rear Panel Connectors This section describes the rear panel connectors which are illustrated in Figure 2 2 00000 6
51. ifications Table A 1 Video specifications Table A 2 Audio specifications Table A 3 Electrical specifications power requirements Table A 4 Environmental characteristics Table A 5 Physical characteristics Table A 6 Certifications and compliances Table A 7 Safety certification compliance Table A 8 Safety standards DS1000 Series User Manual A 1 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Appendix A Performance Specifications Table A 1 Video specifications Category Product Description RF Tuning Range DS1001 55 25 801 25 MHz DS1002 3 48 25 860 25 MHz under range to 45 25 MHz IF Frequency Visual 051001 45 75 MHz DS1002 3 38 9 MHz Aural 051001 41 25 MHz 051002 33 40 MHz 33 16 MHz 33 05 MHz NICAM 051003 32 90 MHz 32 35 MHz NICAM IF Output All 451 dBmV 111 dBpV typical BNC RF Sensitivity All 0 to 30 dBmV 60 to 90 dBuV Return Loss gt 6 dB Input Impedance 75 female F type connector Frequency stability 50 kHz Video signal to noise 051001 gt 50 dB NTC7 weighted DS1002 3 gt 50 dB unified weighted Video outputs 051001 One BNC connector DS1002 3 Two BNC connectors Quadrature output All 1 Vpp 90 phase of video signal on BNC connector 4 5 MHz Intercarrier output 051001 One BNC connector DS1002 3 None Differential Gain 1 596 Differential Phase 1 5 Chro
52. in non volatile memory Use the Configuration menu to select items Table 3 1 lists the configurable items in the sequence that they appear Changes to program items immediately change the operation of the television demodulator This active control allows you to see the affects of a change without exiting the program configuration mode If selected changes do not give the desired result you can discard the changes by exiting the configuration mode using the NO save option Refer to Appendix E for a list of factory default settings for all configurable items Table 3 1 Configure menu hierarchy Configure menu Range Program Frequency Table Frequency Table UHF VHF user defined Chanel Channel Various NTSC 55 25 to 801 25 MHz PAL 45 25 to 860 25 MHz ZCP Status Status ZCP Status off ZCP Line Number NTSC 10 20 F1 amp F2 PAL 6 16 319 329 ZCP Position 0104 DS1000 Series User Manual 3 1 Reference Table 3 1 Configure menu hierarchy cont Configure menu Range Audio Preference NTSC BTSC PAL NICAM FM Audio Input Select NTSC Mono Mono SAP Stereo SAP PAL 1 Mono2 Monol Mono2 Stereo Status Status On Off Sound Trap On Off ISAPNose Noise NTSC 1 16 2 Frequency Manual Frequency 10 to 10 Response Response Adjust 3 Contrast Display Contrast Dark to Max brightness Adjust Adjust 4 User Channel 1 50 NTSC 55 25 to 801 25 MHz Table RM
53. interfaces techniques and the command set Appendix C describes changing fuses and cleaning the product Appendix D contains channel tables Appendix E details the factory default settings DS1000 Series User Manual ix Getting Started DEA Getting Started This section provides the information you need to use the television demodulator for the first time Refer to the following sections to prepare the instrument for operation m Product Description m Options m Electrical Installation m Mechanical Installation m Functional Check Product Description The television demodulator can demodulate standard television RF signals to baseband video and audio Different models cover the range of 55 25 to 801 25 MHz for NTSC M N and 45 25 to 860 25 MHz for PAL B G and I The high performance of the conversion guarantees a measurement quality signal after demodulation Television demodulator Television system DS1001 NTSC 051002 PAL B G 051003 PAL I To find the nomenclature and serial number of your instrument check either of the following places m Before you have mounted the television demodulator look at the identification tag on the bottom panel m After you have installed and powered on the television demodula tor push the Display button three times DS1000 Series User Manual 1 1 Getting Started By applying an RF signal to the antenna input the television demodulator provides baseband video and au
54. lay 2 7 4 5 MHz output description 2 4 FREQ remote command B 19 Frequency adjusting current program 2 9 configuring response 3 10 FREQ remote command B 19 list of tables D 1 selecting a table 3 3 selecting in program 3 4 Front panel arrow buttons 2 2 CONFIG button 2 2 description of features 2 1 DISPLAY button 2 2 DS1000 Series User Manual enter button 2 2 LCD display 2 2 left and right buttons 2 2 PROGRAM button 2 2 up and down buttons 2 2 Functional check 1 8 Fuse AC fuse location 2 3 replacing 2 G Getting started 1 1 electrical installation 1 4 functional check 1 8 mechanical installation 1 6 options 1 2 product description 1 1 standard accessories 1 3 Identification remote command 20 of instrument 2 7 IDN remote command B 20 IF output description 2 4 Initialization at power on 1 5 Inputs 2 4 Installation custom 1 7 electrical 1 4 functional check 1 8 in a system 1 6 mechanical 1 6 rackmount information 1 7 typical configuration 1 6 Instrument firmware revision 2 7 Index 3 Index L Local state DISC remote com mand B 18 LOG remote command 21 Mains source 1 4 Maintenance cleaning 2 replacing the fuse C 2 Manual organization ix Measurements NICAM error count 2 6 RF signal strength 2 5 Mechanical installation 1 6 MSG remote command 21 MSG C remote command
55. lecting a Program 2 8 Adjusting the Current Program 2 9 Reference Configuring Operation 3 1 Guide os vae qua ren ehe 3 2 Program Configuration 3 3 Serial Cone UFaUO0IE o ees su qu Ue xaX ORE 3 8 DS1000 Series User Manual i Table of Contents Frequency Response Configuration 3 10 Contrast Adjustment 3 12 User Defined Channel Table 3 13 Appendices Appendix A Performance Specifications A 1 Appendix B Remote Control B 1 Serial Port C onmecHofic usuaris ususqa alus B 1 Programming Model B 3 Addresses poai yayan a ate ans a ea B 3 Remote Operation Flag B 4 Command Types oue er a ote pe bU EPIS AR uu B 5 Sending and Receiving Data B 5 Send Address Phase 5 s sn bebe B 5 Send Dataphase seeds sales o phe RA Rt dud B 6 Receive Address B 7 Polling for Status Messages B 8 Getting a Message sexes qe bbb RM SS E ed B 9 Command 11 Data Bestes RR B 11 rip oa RR AQ UBI RE ee MGs B 12 Remote Command Descriptions
56. ma Luma Delay 40 ns 1 Video signal to noise tested at 19 dBmV 79 2 DS1000 Series User Manual Appendix A Performance Specifications Table A 1 Video specifications cont Category Product Description Frequency response DS1001 0 7 dB 100 kHz to 3 58 MHz 18 C to 26 C 1 0 dB 100 kHz to 3 58 MHz 5 C to 35 C 2 dB 3 58 MHz to 4 1 MHz typical 0 7 dB 100 kHz to 4 43 MHz 18 C to 26 C DS1002 3 1 0 dB 100 kHz to 4 43 MHz 5 C to 35 C 2 dB 4 43 MHz to 5 0 MHz typical Group Delay Sound trap DS1001 50 5 100 kHz to 3 58 MHz off Referenced to system M N DS1002 60 5 100 kHz to 4 43 MHz Referenced to system B G General DS1003 60 ns 100 kHz to 4 43 MHz Referenced to system I Flat Luminance Bar Amp AI lt 2 typical Luminance Bar Tilt lt 3 typical 2T Factor nam 2 596 typical Line Time Distortion lt 3 typical Table 2 Audio specifications Category Product Description Audio Outputs 051001 2XLR configurable left right mono SAP mono mono DS1002 3 2 XLR configurable auto switching FM or NICAM auto switching for mono dual sound and stereo Frequency Response 0 5 dB 50 Hz to 12 kHz typical Total Harmonic Distortion 196 at 1 kHz Level 0 dBm across 600 O 1 Audio THD tested with a blackburst video signal DS1000 Series User Manual A 3 Appendix Performance Specifications Table 3 Electrical spe
57. meters For information on the syntax used for command definitions refer to page B 11 The alphabetical list of commands and their parameters begins on page B 13 Sending and Receiving Data The PC must send commands and addresses in a certain order when writing data to and reading data from the television demodulator The main steps in the communications process are as follows 1 Send the identifying addresses 2 Detect readiness of the television demodulator 3 Send command and parameters 4 Receive response data Several types of communications are possible Each type has a pattern of commands or phases that must be used The following discussions introduce these communication phases send address send data receive address poll for messages and get messages Send Address Phase The PC uses Ad and Ars to address a particular television demodula tor The television demodulator configured with a matching address answers with either a ready response or a not ready response Sending DS1000 Series User Manual B 5 Appendix B Remote Control B 6 this address data aborts all other communication on the bus The following three cases show variations of the send address phase The PC addresses a television demodulator that is not ready to receive data PC DLE ENQ Ad Ars Addressing phase DS1000 DLE WACK Not ready response The PC addresses a television demodulator that is ready and the PC sends dat
58. mmands appear in alphabetical order AFC Sets or requests the current AFC status The television demodulator must be in the remote state to use this command Syntax Arguments afc state Either O for off or 1 for on Examples Command Result AFC 1 AFC control is set to on DS1000 Series User Manual B 13 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Appendix B Remote Control AUD OUT Selects or requests the audio output mode The television demodulator must be in the remote state to use this command Syntax AUD OUT aud val AUD OUT aud status Arguments Argument Description aud val byte Left Right PAL Left Right NTSC 0 Monol Monol Mono Mono 1 Mono2 Mono2 Mono SAP 2 Monol Mono2 Stereo Stereo 3 Stereo Stereo SAP SAP aud status 0 Mute 1 FM Nicam Monol 2 FM Nicam Mono2 3 FM Nicam 1 2 4 Stereo 5 BTSC SAP 6 BTSC Mono 1 BTSC Mono SAP 8 BTSC Mono Mute Examples Command Result AUD OUT 2 Audio output mode set to dual mono for PAL systems or stereo for NTSC systems B 14 DS1000 Series User Manual Appendix B Remote Control AUD PREF Sets or requests the current audio control preference if both FM and NICAM signals are present The television demodulator must be in the remote state to use this command Syntax AUD PREF ap state AUD PREF Arguments
59. munity 801 3 RF Electromagnetic Field Immunity IEC 801 4 Electrical Fast Transient Burst Immunity 801 5 Power Line Surge Immunity High quality shielded cables must be used to ensure compliance Complies with EMC provision of Radiocommunications Act per the following standard s AN NZS 2064 1 2 Industrial Scientific and Medical Equipment 1992 Emissions comply with FCC Code of Federal Regulations 41 Part 15 Subpart B Class A Limits 3 High quality shielded cables must be used to ensure compliance Compliance was demonstrated to the following specification as listed in the Official ournal of the European Communities Low Voltage Directive 73 23 Amended by 93 68 EN 61010 1 1993 Safety requirements for electrical equipment for measurement control and laboratory use ANSI ISA 82 01 Safety standard for electrical and electronic test measuring controlling and related equipment 1994 DS1000 Series User Manual A 5 Appendix A Performance Specifications Table 6 Certifications and compliances cont Category Installation Category Descriptions Description UL3111 1 Standard for electrical measuring and test equipment CAN CSA C22 2 No 1010 1 Safety requirements for electrical equipment for measurement control and laboratory use Terminals on this product may have different installation category designations The installation categories are CAT III Dist
60. n MHz X frequency in MHz 256 YYY frequency in MHz x 256 The range is 45 to 860 3 freqL val word Sets the fractional part of the frequency in kHz X frequency in kHz 256 YYY frequency in kHz x 256 The range is 0 to 999 Examples Result freqH 1 100 1x2564100 356 MHz freqL 0 250 250 kHz The frequency set is 356 25 MHz Command FREQ 1 100 0 2501 DS1000 Series User Manual B 19 Appendix B Remote Control IDN Syntax Sets or requests the television demodulator identification The query returns the device name 5 1001 followed by the software version number V01 00 and a defined name unit loc You can assign a device name with IDN unit loc The television demodulator must be in the remote state to use this command IDN unit loc IDN device version unit loc Arguments Returns Examples B 20 unit loc up to 20 characters device version unit loc Byte offset Format Description 1 Char 10 Model 0510017 1 Char 6 Software version V01 00 17 Char 20 Custom name DEMOD2 Result DS1001 V01 00 DEMOD2 The model is DS1001 the software is version 1 00 and the custom name is DEMOD2 Command IDN DS1000 Series User Manual Appendix B Remote Control LOG Query only Requests the remote state of the television demodulator Use the command PWD to star
61. n 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 Quadrature AM A process that allows two signals to modulate a single carrier frequency Two signals amplitude modulate carrier signals with the same frequency but with a phase difference of 90 degrees hence the term Quadrature The two resultant signals are added together before transmission Both signals are recovered at the receiver by demodulating them 90 degrees apart Quadrature Distortion Distortion resulting from the asymmetry of sidebands used in vestigial sideband television transmission Quadrature distortion appears when using envelope detection but can be eliminated by using a synchronous demodulator RF Radio Frequency In television applications the television signal after the picture carrier modulation process RGB 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 Subcarrier The high frequency signal used for quadrature amplitude modulation of the color difference signals The subcarrier frequency is 3 579 545 Hz NTSC or 4 433 618 75 Hz PAL Synchronous Detection A demodulation process in which the original signal is recovered by multiplying the modulated signal with the output of a synchr
62. ne byte either 1 to enable messages or 0 to disable them Examples Command Result MSG 1 The television demodulator may now generate messages B 22 DS1000 Series User Manual Appendix B Remote Control PATH Polls the television demodulator to check for status messages The television demodulator returns its lt Ad gt lt Ads gt addresses when there is a message and a null string when there are no messages Use the MSG command to get the actual status message If the messages are disabled with the 5 C command the television demodulator will not have a message For more information on using the PATH command for polling refer to page 8 Syntax PATH Ad Ars PATH Returns Device address Ad Description Device address always OF hex for the television demodulator Ars Remote address calculated on page B 3 Examples Result lt Ad gt lt Ars gt The television demodulator has a message and is ready to send it The lt Ad gt lt Ars gt addresses are contained in the lt data gt returned Command PATH DS1000 Series User Manual B 23 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Appendix B Remote Control PRESET Sets or requests the settings for one of the 20 programs without affecting the present operation of the television demodulator Use the RECPRT command to activate a preset pr
63. nected to a voltage source Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded 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 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 in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Keep Product Surfaces Clean and Dry Provide Proper Ventilation Refer to the manual s installation instruc tions for details on installing the product so it has proper ventilation DS1000 Series User Manual vii Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com General Safety Summary Safety Terms and Symbols Terms in This Manual These terms may appear in this manual N WARNING Warning statements identify conditions or practices that could result in injury or loss of life
64. nge 95 to 240 VAC without the need for adjustment Power On Procedure To power on the television demodulator connect it to the AC power source There is no power switch See Figure 1 1 The power on sequence completes in about 10 seconds DS1000 Series User Manual Getting Started The television demodulator tests major circuits during power on and displays the following status messages ROM test RAM test test System Initialization When testing completes the television demodulator displays the current RF setting Gu jet Figure 1 1 Rear panel connectors DS1000 Series User Manual 1 5 Getting Started Mechanical Installation The television demodulator requires no assembly Please read the following sections before installing the television demodulator into a console or equipment rack Figure 1 2 shows a sample connection in a system including a video monitor and an audio monitor NOTE All qualification testing was performed with the factory shipped cabinet installed To guarantee compliance with specifica tions operate the instrument only in the original cabinet Video monitor Audio L amp R RF Antenna Outputs input Video output oC Jo Y Audio monitor Figure 1 2 Typical system configuration 1 6 DS1000 Series User Manual Getting Started Custom Installa
65. o system has primary control The choices are NICAM and FM If the primary choice signal is not present then the secondary choice takes control 6 Audio Input Selection IG PROGRAM 81 T STEREO STEREO m gt The audio input selection item allows control of the audio outputs on the rear panel For PAL systems the available choices are MONO2 DUAL MONO and STEREO For NTSC systems the available choices are MONO MONO SAP STEREO and SAP 7 AFC 15 PROGRAM 81 T 4 OFF OFF ON The AFC selection when enabled sets the tuning system of the television demodulator to locate and lock to a frequency that drifts 3 6 DS1000 Series User Manual Reference or to a frequency that is between the standard 0 25MHz frequency steps The AFC function is not normally required for broadcast signals and should be used with caution because of its limited range of 1 MHz about the video carrier frequency The options for the AFC item are either on or off 8 Sound Trap CONFIG PROGRAM Bi T SOUND TRAP OFF OFF ON The sound trap status item when enabled adds extra filtering to remove any sound element from the video signal The options for the sound trap item are either on or off 9 BTSC Stereo SAP Noise Thresholds IS PROGRAM 81 T ETSC STEREO 88 S 2 The BTSC
66. odulator that is not ready ignores the not ready response and sends data PC DLE Ad Ars Addressing phase DS1000 DLE Aborted ready response PC DLE STX Data DLE ETX Data phase The PC can ignore the not ready response and transmit the addressing phase and data phase sequentially In this case the television demodulator aborts the not ready response after receiving the first byte of the data phase The PC receives only a DLE character If the byte 10 hex is part of the data this byte is sent twice so that it is not confused with DLE ETX 10 hex which ends the data phase Receive Address Phase To acquire data from the television demodulator the PC first sends the Ad and Arr addresses to identify the television demodulator This address phase aborts other communication on the same bus The television demodulator responds with a not ready phase if it does not have the requested data It responds with a ready phase followed by a data phase when it has data The receive data phase contains the Ad and Arr addresses to identify the responding television demodulator Examples of receive communication between the PC and the television demodulator follows with descriptions in italics The PC addresses a television demodulator that has no data available PC DLE Ad Arr Addressing phase DS1000 DLE WACK Not Ready response The PC addresses a television demodulator that has data availabl
67. ogram number The television demodulator must be in the remote state to use this command Syntax lt nr settings data PRESET Arguments press nr is the program number to set or query Range 1 20 settings data Refer to the SETT command for a definition of these parameters Examples Command Result PRESET 10 settings data Returns the program data for number 10 PWD Puts the television demodulator in the remote state and sets the remote flag The front panel is disabled when in the remote state Use the command DISC to enter the local state and clear the remote flag Syntax PWD Arguments none 24 DS1000 Series User Manual Appendix B Remote Control RECPRT Selects and makes active the current program preset or requests the current number The data in prog nr becomes the current setting of the television demodulator This command sets the tuning mode to PROGRAM This command is allowed only when the remote flag is true and when TUNING 4 indicating the PROGRAM mode Syntax RECPRT prog nr RECPRT Arguments prog nr one byte in the range 1 to 20 to indicate the program number Examples Command Result RECPRT 12 The program number 12 is the current active program DS1000 Series User Manual B 25 Appendix B Remote Control REPORT Query only Requests the operating state of the television demodulator The response is 0 when an active
68. onous oscillator locked to the carrier Glossary 4 DS1000 Series User Manual Glossary 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 2 transmission lines so a 75 Q terminator must be at the end of any signal path A receiving device connected to the transmission line may provide the necessary termination Vertical Interval The synchronizing information that appears between fields and tells the picture monitor to go back to the top of the screen to begin another vertical scan Y Abbreviation for luminance Zero Carrier Reference Pulse ZCP A pulse in the vertical interval which is produced by the demodulator to provide a reference for evaluating the depth of modulation DS1000 Series User Manual Glossary 5 Glossary Glossary 6 DS 1000 Series User Manual EA UU Index Index A Accessories optional 1 3 standard 1 3 Address RS485 addresses B 3 setting for RS485 serial commu nication 3 8 Adjust frequency response 3 10 AFC remote command 13 selecting mode in program 3 6 Applying power 1 4 2 4 AUD OUT remote command B 14 AUD PREF remote command B 15 Audio AUD OUT remote command B 14 AUD PREF remote command B 15 BTSC remote command B 16 CHANNEL remote command B 17 input selection 3 6 selecting mode in program 3 6 se
69. owing example shows how to use the MSG command to retrieve a status message from a television demodulator The PC addresses a television demodulator that is busy and repeats the addressing phase until the television demodulator returns a ready phase The PC then sends the MSG command PC DLE ENQ Ad Ars Send Addressing phase DS1000 DLE ACKO Ad Ars Ready phase gt DLE STX MSG DLE ETX Data phase After receiving the MSG command the television demodulator places its answer in its transmit buffer and the PC retrieves the message with a receive phase The data in this example 20h is the test message Other bit patterns are listed with the MSG command PC DLE ENQ Ad Arr Receiving addressing phase DS1000 DLE STX Ad Arr 20h DLE ETX Data phase DS1000 Series User Manual B 9 Appendix B Remote Control The PC acknowledges the data by sending the MSG command followed by the data bit pattern The PC resumes polling but clears the message data as it reads the message PC DLE ENQ Ad Ars Send addressing phase DS1000 DLE ACKO Ad Ars Ready phase PC DLE STX MSG 20h DLE ETX Data phase B 10 DS1000 Series User Manual Appendix B Remote Control Command Syntax The command descriptions follow a consistent format The elements of that format are discussed here Description Gives the function of the command conditions of its
70. resets are set the same so only the default setting for one program is shown Table E 1 Program default settings BTSC Stereo Noise BTSC SAP Noise Program item NTSC system PAL system Frequency Table Broadcast UHF Europa Channel Number 38 39 Frequency 615 25 MHz 615 25 MHz ZCP Line Number 13 Audio Preference NICAM Audio Output Mode Stereo Br LN DS1000 Series User Manual E 1 Appendix E Factory Default Settings Table E 2 System default settings Item Active Program Position Message IDN command Manual Frequency Response All frequency steps User Defined Channel Table All channels Serial Mode Unit Address RS232 Handshake Status 5485 Termination Default setting Setto ASCII space character 0 200 00 MHz RS232 32 Enabled Terminated DS1000 Series User Manual rx Glossary Glossary Bandwidth The range of frequencies over which signal amplitude remains constant within some limit as it is passed through a system Baseband The composite video signal before it modulates the picture carrier Composite video that is distributed throughout a studio and is used for recording is at baseband Broad Pulses The vertical synchronizing pulses in the center of the vertical interval These pulses are long enough to be distinguished from all others and are the part of the signal actually detected by vertical sync separators Burst A small reference packet of the subc
71. ribution level mains usually permanently connected Equipment at this level is typically in a fixed industrial location Local level mains wall sockets Equipment at this level includes appliances portable tools and similar products Equipment is usually cord connected Secondary signal level or battery operated circuits of electronic equipment Table A 7 Safety certification and compliance Category Temperature operating Altitude maximum operat ing Relative Humidity maximum operating Equipment Type Safety Class Installation Category Pollution Degree A 6 Description 415 C to 40 6500 feet 2000 meters 80 for temperatures up to 31 C decreasing linearly to 50 at 40 C Test and Measuring Class as defined in IEC 1010 1 Annex H grounded product Installation category Il as defined in IEC 1010 1 Annex J Pollution Degree 2 as defined in IEC 1010 1 Note Rated for indoor use only DS1000 Series User Manual Appendix A Performance Specifications Table A 8 Safety standards Category Description U S Nationally Recognized ANSI ISA 582 01 Safety Standard for Electrical and Testing Laboratory Listing Electronic Test Measuring Controlling and Related Equipment 1994 UL3111 1 Standard for Electrical Measuring and Test Equipment Canadian Certification CAN CSA C22 2 No 1010 1 Safety Requirements for Electrical Equipment for Measurement
72. t be in the remote state to use this command Syntax ZCP zcp state zcp line no zcp position ZCP Arguments Byte offset 0 for Off 1forOn 2 3 cp line no Sets the line number on which the ZCP is activated The range is 0 to 20 The cp line no translates to an actual video line number as follows Line No PAL NTSC 0 10 6 16 10 20 Field 1 11 21 319 329 10 20 Field 2 ZCP position on the selected line Range is 0 to 4 Examples Command Result ZCP 1 13 1 NTSC ZCP is active on line 12 field 2 in position 1 PAL ZCP is activate on line 321 in position 1 B 30 DS1000 Series User Manual _ _ _ Appendix D Channel Tables This section contains the frequency and channel tables used by the television demodulator system When manually selecting a channel the television demodulator displays the channel name and number When selecting a channel using the remote serial commands the channel record number provides access to the channels D 1 CATV HRC channel table D 2 D 2 CATV IRC channel table D 3 D 3 CATV Standard channel table D 5 D 4 Standard channel table D 7 D 5 IRC channel table D 9 D 6 HRC channel table NTSC 99 D 10 D 7 Broadcast channel table NTSC 68 D 12 D 8 UHF Europa channel table PAL 0 13 0 9 UHF China channel table PAL 4 D 14 D 10 VHF Europa channel table PAL D 15 D 11 VHF France channel table PAL 10 D 16 D 13 VHF Australia channel table D 16 D 14 VHF China channel table D 17
73. t of Tables Table 1 1 Power cord identification 1 2 Table 3 1 Configure menu hierarchy 3 1 Table 3 2 Frequency response adjustment bands 3 11 Table A 1 Video specifications A 2 Table A 2 Audio specifications A 3 Table A 3 Electrical specifications power requirements 4 Table A 4 Environmental characteristics 4 Table 5 Physical characteristics A 4 Table A 6 Certifications and compliances A 5 Table 7 Safety certification and compliance A 6 Table A 8 Safety standards 7 Table 1 Rear panel SERIAL port connections B 2 Table B 2 Special bytecodes B 3 Table 3 Data types used in remote communication Table D 1 channel table D 2 Table D 2 CATV channel table D 3 Table D 3 standard channel table D 5 Table D 4 Standard channel table D 7 Table D 5 IRC channel table D 9 Table D 6 HRC channel table D 10 Table D 7 Broadcast channel table D 12 Table D 8 UHF Europa channel table D 13 Table D 9 China channel table D 14 Table D 10 Europa channel table D 15
74. t remote operation and DISC to return to local operation Syntax LOG Arguments remote flag 0 for local control 1 for remote Returns remote flag Examples LOG 0 The television demodulator is in the local state MSG Clears or requests the status of the television demodulator The MSG command causes the television demodulator to place any messages in its transmit buffer Use a receive phase to return the message The television demodulator can be polled continuously see page B 8 MSGz clears the message bit s matching the true bits in the message byte state The television demodulator must be in the remote state to use the MSG command Syntax MSG lt state gt MSG Arguments lt state gt is 1h to FFh FFh clears all message bits DS1000 Series User Manual B 21 Appendix B Remote Control Returns Bitmap of state Description of True state 1 b7 Invalid remote command Television demodulator received an invalid command b6 Wrong remote parameter Television demodulator received the wrong parameter 00 65 Notused Examples MSG 128 decimal which equals 80h or 10000000b This message indicates an invalid command MSG C Enables or disables message generation in the television demodulator Setting MSG C from 1 to 0 clears all pending messages The television demodulator must be in the remote state to use this command Syntax MSG msg state MSG C Arguments msg state o
75. the Configure menu Use the up and down buttons T and 4 to select the User Channel Table Press the enter button 1 to enter the User Channel Table menu SYSTEM CONFIG T USER CHANNEL TABLE T USER CHANNEL TABLE 19 The television demodulator can store several custom channels and frequencies You can select from channels 1 to 50 using the up and down arrow keys Use the left and right arrow keys to set the new frequency for the channel The channel frequency is saved when you either press the Config button or select another channel You select the User Defined channel table as you do other frequency and channel tables Refer to Program Configuration on page 3 3 for instructions on selecting a frequency table DS1000 Series User Manual 3 13 Reference 3 14 DS1000 Series User Manual Appendices a Appendix A Performance Specifications The instrument specifications listed in this section are either performance requirements or reference information Performance requirements are valid over an ambient temperature range of 5 C to 35 C unless otherwise noted Ensure that test equipment used to verify performance requirements is calibrated and working within its specified limits Reference information marked RI amplifies a performance requirement or provides useful information on other operating parameters This section contains the following spec
76. then the television demodulator will attempt to load factory default settings This process takes 5 to 10 seconds When the initialization sequence completes the unit displays the current channel frequency selection along with the RF signal strength Selecting Display Modes To access the display modes for the television demodulator press the DISPLAY button on the front panel Each press of the display button accesses the next display mode When you reach the last display mode the next press of the display button returns the display to the first display mode The following list describes the display modes in their order of appearance 1 System Status RF LEUEL CH 59 Fur amp i15 25HMHz After power on sequence completes the display shows the current channel and frequency selection and the RF signal strength for the channel and frequency The channel number is taken from the frequency table you select It may be either numeric or alphanumeric depending on its definition in the frequency table If the frequency does not correspond to a channel frequency in the current frequency table then the channel number is replaced by asterisks The RF signal strength is displayed in the form of a bar graph and represents the signal strength for the current channel frequency A weak signal RF amplitude lt 100 uV is represented by 10 dashes _ on the bar graph As the signal strength increases in amplitude DS1
77. tion CAUTION To avoid damage to the television demodulator attach it to a shelf that is strong enough to hold its weight 4 8 lbs 2 2 kg For applications that require installation into consoles the television demodulator can be mounted with the front moulding flush or protruding from the console Always allow approximately 3 inches 7 6 cm of rear panel clearance for cable and power cord connections Rackmount Information The television demodulator is one half rack wide and one rack unit high It requires approximately 3 inches 7 6 cm of rear panel clearance for the power cord and cable connections and 20 inches 50 8 cm in front of the rack for installation and removal m adapter mounts a single instrument in a standard 19 inch rack m TVGF13 adapter mounts two half rack width instruments side by side in a standard 19 inch rack Use this adapter to mount DS1000 and VM100 series instruments side by side m TVGF14 adapter mounts two half rack width instruments vertically in a standard 19 inch rack Use this adapter to mount 251000 VM100 series instruments with 1700 series monitor DS1000 Series User Manual 1 7 Getting Started Functional Check To check that the television demodulator is operating correctly perform the following procedures 1 9 Connect the television demodulator to power and wait a few seconds for the power on tests and initialization If these tests pass the displ
78. tting noise threshold 3 7 specifications A 3 Audio outputs description 2 4 left 2 4 status display 2 6 Baud rate 2 DS1000 Series User Manual BTSC audio selection for NTSC 3 6 remote command B 16 Buttons arrow 2 2 CONFIG 2 2 DISPLAY 2 2 enter 2 2 left and right 2 2 PROGRAM 2 2 up and down 2 2 use in Configure menu 3 2 C Certifications and compliances 5 CHANNEL remote command B 17 Channel adjusting current program 2 9 assignments in frequency tables 3 4 list of frequency tables D 1 selecting in program 3 4 Channel table configuring 3 13 Channel tables D 1 broadcast D 12 HRC D 2 IRC D 3 CATV standard D 5 HRC D 10 IRC D 9 standard D 7 UHF China D 14 UHF Europa D 13 VHF Australia D 16 VHF CCIR D 18 Index 1 Index VHF China D 17 VHF Europa D 15 VHF France D 16 VHF Ireland D 17 VHF Italy D 16 VHF New Zealand D 17 VHF OIRT D 18 VHF South Africa D 18 Cleaning the exterior surface C 2 Commands B 13 AFC B 13 AUD OUT B 14 AUD PREF B 15 BTSC B 16 CHANNEL B 17 DISC B 18 FREQ B 19 IDN B 20 LOG 21 MSG B 21 MSG C B 22 PATH 23 PRESET B 24 PWD B 24 RECPRT 25 REPORT B 26 SETT B 26 STRAP B 28 syntax defined B 11 TUNING B 29 ZCP B 30 Communication serial port 2 3 serial port pin out B 1 serial port protocol B 1 Composite output description 2 4 Con
79. y WACK Device is not ready af Ar User defined remote address Ars Send remote address Arr Receive remote address You assign the remote address For more information refer to Addresses on page B 3 Addresses The television demodulator has four addresses that are necessary for communication using the SCL protocol Table B 2 lists the four addresses Ad Ar Ars and Arr For information on using these DS1000 Series User Manual B 3 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Appendix B Remote Control B 4 addresses refer to page B 5 The addresses perform the following functions Device address Ad is set to OF hex in all television demodulators The PC uses the device address to initiate communication with a television demodulator m Remote address Ar is unique for each television demodulator You set this unique address as a decimal number To set the address use the SERIAL SET UP item in the configuration menu The remote address is the base address used to determine the Ars and Arr addresses m Send remote address Ars is used to send data to the television demodulator Calculate Ars using the following equation Ars Arx 2 W Receive remote address Arr is used to receive data from the television demodulator Calculate Arr using the following equation 2 1 For example if you set the remote address

User Manual DS1000 Series Television Demodulators 070-9858-01

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