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AVG1 Analog Video Generator User Manual

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1. 8 gt SCH PHASe ooo 8 gt STEP Uf gt SUBCarrier OFFSet gw STEP ooo 8 gt SYNC dg STEP oo 8 gt TIMEbase 8 gt STEP ll B 2 AVG1 Analog Video Generator User Manual Appendix B SCPI Conformance Information Table B 1 SCPI Conformance Information cont Not Defined Defined in SCPI In SCPI Command 1994 0 1994 0 SOURce VIDeo lt n gt AMPLitude Val STEP Val AVIDeo Val STEP Val BURSt al STEP al PEDestal al STEP Val SYNC Val STEP al AVGI1 Analog Video Generator User Manual B 3 Appendix B SCPI Conformance Information B 4 AVG1 Analog Video Generator User Manual The following servicing instructions are for use only by qualified personnel To avoid injury do not perform any servicing other than that stated in the operating instructions unless you are qualified to do so Refer to all safety summaries before performing any service ANANANAMNNANNANANANANANANANANANANN aS RS FE Appendix C Installation This section contains instructions for installing the module into the TG 2000 Platform mainframe Listed below are the major topics in this section m Preventing component damage m Module installation including signal set installation m Signal backup and module removal Preventing Component Damage and mainframe To prevent ESD or other component damage follow the steps A CAUTION Electrostatic discharge ESD can damage comp
2. Command Query response lt Boolean gt ON or 1 OFF or 0 1 0 OFF 200 Execution error None Command OUTP TRIG CURS STAT 1 Query OUTP TRIG CURS STAT Response 1 None AVG1 Analog Video Generator User Manual OUTPut Commands OUTPut TRIGger POSition HORizontal Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the trigger position horizontally within the video signal The argument is in microseconds NOTE There is interaction between the vertical and horizontal parameters since these parameters combine to resolve any overlap OUTPut TRIGger POSition HORizontal lt numeric_value gt OUTPut TRIGger POSition HORizontal Command Query response lt numeric_value gt lt NRf gt lt NR2 gt DEF UP DOWN 0 0 200 Execution error None Command OUTP TRIG POS HOR 32 5 Query OUTP TRIG POS HOR Response 32 5000 OUTPut TRIGger POSition VERTical AVGI1 Analog Video Generator User Manual 3 21 OUTPut Commands OUTPut TRIGger POSition HORizontal STEP Use this command to set or query the horizontal trigger position step increment used by the UP or DOWN commands Syntax OUTPut TRIGger POSition HORizontal STEP lt numeric_value gt OUTPut TRIGger POSition HORizontal STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF
3. 200 Execution error None Command SOUR MVID SCH 10 Query SOUR MVID SCH PHAS Response 10 0000 None AVG1 Analog Video Generator User Manual 3 53 SOURce Commands SOURce MViIDeo SCH PHASe STEP Use this command to set or query the UP DOWN step value of the subcarrier to horizontal phase Units are degrees Syntax SOURce MVIDeo SCH PHASe STEP lt numeric_value gt SOURce MVIDeo SCH PHASe STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOURce MVIDeo SCH PHASe STEP 2 Query SOURce MVIDeo SCH PHASe STEP Response Response 2 0000 Related Commands None 3 54 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo SUBCarrier OFFSet Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the frequency change of the subcarrier of a hardware modulated composite video signal Units are degrees SOURce MVIDeo SUBCarrier OFFSet lt numeric_value gt SOURce MVIDeo SUBCarrier OFFSet Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX UP DOWN DEF 0 0 200 Execution error None Command SOUR MVID SUBC OFFS 0 Query SOUR MVID SUBC OFFS Response 0 0000 None AVGI1 Analog Video Generato
4. Default Value 1 Errors and Events 200 Execution error Dependencies None Examples Command OUTP TRIG POS HOR STEP 0 5 Query OUTP TRIG POS HOR STEP Response 0 5000 Related Commands None 3 22 AVG1 Analog Video Generator User Manual OUTPut Commands OUTPut TRIGger POSition VERTical Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the trigger position vertically within the video signal The argument is in the number of lines NOTE There is interaction between the vertical and horizontal parameters since these parameters combine to resolve any overlap OUTPut TRIGger POSition VERTical lt numeric_value gt OUTPut TRIGger POSition VERTical Query response lt NR2 gt Command lt numeric_value gt lt NRf gt UP DOWN DEF 1 0 200 Execution error None Command OUTP TRIG POS VERT 45 Query OUTP TRIG POS VERT Response 45 0000 OUTPut TRIGger POSition HORizontal AVG1 Analog Video Generator User Manual 3 23 OUTPut Commands OUTPut TRIGger POSition VERTical STEP Use this command to set or query the vertical trigger position step increment used by the UP or DOWN commands Syntax OUTPut TRIGger POSition VERTical STEP lt numeric_value gt OUTPut TRIGger POSition VERTical STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MI
5. Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR MVID AVID STEP 5 Query SOUR MVID AVID STEP Response 5 0000 Related Commands None 3 38 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo BURSt Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the burst pulse portion of the video signal This command sets the burst pulse amplitude on all channels at the same time Units are percent SOURce MVIDeo BURSt lt numeric_value gt SOURce MVIDeo BURSt Query response lt NR2 gt Command lt numeric_value gt lt NRf gt MIN MAX UP DOWN DEF 100 200 Execution error Amplitude for each channel also affected by the related command Command SOUR MVID BURS 0 Query SOUR MVID BURS Response 0 0000 SOURce VIDeo3 BURSt AVG1 Analog Video Generator User Manual 3 39 SOURce Commands SOURce MVIDeo BURSt STEP Use this command to set or query the UP DOWN step value of the burst pulse portion of the video signal Units are percent Syntax SOURce MVIDeo BURSt STEP lt numeric_value gt SOURce MVIDeo BURSt STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN
6. MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR MVID BURS STEP 10 Query SOUR MVID BURS STEP Response 10 0000 Related Commands None 3 40 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo BY Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the BY component of a hardware modulated composite video signal Units are percent SOURce MVIDeo BY lt numeric_value gt SOURce MVIDeo BY Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX UP DOWN DEF 100 200 Execution error Amplitude affected by the related commands Command SOUR MVID BY 2 Query SOUR MVID BY Response 2 0000 SOURce MVIDeo RY SOURce MVIDeo CHRoma AMPLitude AVGI1 Analog Video Generator User Manual 3 41 SOURce Commands SOURce MVIDeo BY STEP Use this command to set or query the UP DOWN step value of the BY compo nent of an HW modulated composite video signal Units are percent Syntax SOURce MVIDeo BY STEP lt numeric_value gt SOURce MVIDeo BY STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR MVID BY STEP 5 Query SOU
7. SOUR VID3 PED command to adjust the pedestal amplitude for each channel separately when applicable Units are millivolts SOURce MVIDeo PEDestal lt numeric_value gt SOURce MVIDeo PEDestal Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX UP DOWN DEF 200 Execution error Amplitude for each channel may also be affected by the related command Command SOUR MVID PED 5 Query SOUR MVID PED Response 5 0000 SOURce VIDeo3 PEDestal AVG1 Analog Video Generator User Manual 3 49 SOURce Commands SOURce MViDeo PEDestal STEP Use this command to set or query the UP DOWN step value of the pedestal portion of the video signal Units are millivolts Syntax SOURce MVIDeo PEDestal STEP lt numeric_value gt SOURce MVIDeo PEDestal STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR MVID PED STEP 5 Query SOUR MVID PED STEP Response 5 0000 Related Commands SOURce VIDe03 PEDestal 3 50 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo RY Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the RY component of an HW modulated composite video signal Units are percent
8. 2 2 Module removing C 10 Module parameters window 2 13 Module timing 2 15 Modules window 2 4 0 Online help 2 2 Operating procedures 2 3 Output configuration window C 9 Output configurations 2 2 Output signal enable 2 5 select 2 5 Output signal enable 2 13 Outputs 2 2 Overview functional 2 1 P Power on procedure 2 4 Rear panel connectors 2 2 Remote loading a signal 3 5 Removing a module C 10 Rules command forming 3 1 S Saving signal sets C 10 SCPI subsystem hierarchy tree 3 3 SCPI commands and queries syntax 3 3 Select the module 2 4 Select the output signal 2 5 Self calibration 1 3 Set module timing 2 15 Index 1 Index Signal information 2 8 Signal set installation C 6 Signal sets window 2 5 Signal text overlay 2 9 Signal text window 2 9 Signals modulated 2 2 Software modulated signals 2 2 Specifications electrical A 1 Syntax command 3 1 T Test signals window 2 6 Time base offset 1 1 Timebase offset 2 11 Trigger window 2 16 V Video parameters window 2 11 Index 2 W Window active signal parameters 2 7 circle overlay 2 14 module parameters 2 13 modules 2 4 output configuration C 9 signal information 2 8 signal sets 2 5 signal text overlay 2 9 test signals 2 6 timing 2 15 trigger 2 16 video parameters 2 11 AVG1 Analog Video Generator User Manual
9. Command SENS CORR MDEL HOR STEP 5 Query SENS CORR MDEL HOR STEP Response 5 0000 Related Commands None AVG1 Analog Video Generator User Manual 3 29 SENSe Commands SENSe CORRection MDELay VERTical Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands 3 30 Use this command to set or query the vertical time delay of the module The argument can be a floating point value that is translated into an integer number of lines plus a horizontal offset The query returns an integer value even if the command used a floating point argument The fractional parts are used to adjust the HORizontal offset Settings are saved through power cycles SENSe CORRection MDELay VERTical lt numeric_value gt SENSe CORRection MDELay VERTical Query response lt NR2 gt Command lt numeric_value gt lt NRf gt UP DOWN DEF 1 0 200 Execution error None Command SENS CORR MDEL VERT 12 Query SENS CORR MDEL VERT Response 12 0000 SENSe CORRection MDELay HORizontal AVG1 Analog Video Generator User Manual SENSe Commands SENSe CORRection MDELay VERTical STEP Use this command to set or query the step increment used by the UP or DOWN commands Syntax SENSe CORRection MDELay VERTical STEP lt numeric_value gt SENSe CORRection MDELay VERTical STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf
10. DATA i osc e coe EA aia ene aie hava wee ade E EE TAa 3 16 SOUT Put TEXTS TATC Y v2 ices ejecta iain ada nets ue wala ave alee alata aoe beatin 3 17 OUTPut TEXT POSition HORizontal 2 0 0 0 eee eee 3 18 OUTPut TEXT POSition VERTical 2 2 0 6 eee eee eee 3 19 OUTPut TRIGger CURSor STATe 2 cee 3 20 OUTPut TRIGger POSition HORizontal 2 0 6 eee eee 3 21 OUTPut TRIGger POSition HORizontal STEP 5 0 e eee eee 3 22 OUTPut TRIGger POSition VERTical 6 0 0 eee 3 23 OUTPut TRIGger POSition VERTical STEP 00 c eee eee 3 24 OUTPut TRIGgerTYPE se kin EE sea ee cele ee aie iat eel ee ain 3 25 SENSe Commands 4 ais eRe EEEE ETELE 3 27 Command Trees stadt o eee ene ae aa iin aig MN Gee Bae 3 27 SENSe CORRection MDELay HORizontal 06 e eee ee eee 3 28 SENSe CORRection MDELay HORizontal STEP 0005 3 29 SENSe CORRection MDELay VERTical 0 00 e cece eee eee 3 30 SENSe CORRection MDELay VERTical STEP 000000005 3 31 SOURCE Commands 0 5 6064 0 save nsies ied eae oes oe ceed wwe 4 3 33 Command Tres nyors rore nra ae ees pea ears ere Seale EE ee de aerators 3 34 SOURce MVIDeo AMPLitude 2 0 0 ec ec eens 3 35 SOURce MVIDeo AMPLitude STEP 2 0 2 0 c cece eee eee 3 36 SOURce MVIDeo AVID 0 suser net darsi enes 3 37 SOURce MVIDeo AVIDeo STEP 2 eee eee eee 3 38 SOURce MVIDeo BURSU oerssrciysrsetute
11. MVID TIME 20 Query SOUR MVID TIME Response 20 NOFR SOURce MVIDeo AVG1 Analog Video Generator User Manual 3 59 SOURce Commands SOURce MViDeo TIMEbase STEP Use this command to change the UP DOWN step value for the associated command The units are PPM Syntax SOURce MVIDeo TIMEbase STEP lt numeric_value gt SOURce MVIDeo TIMEbase Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 Errors and Events 200 Execution error Dependencies AVG1 module must be enabled Examples Command SOUR MVID TIME STEP 2 Query SOUR MVID TIME STEP Response 2 0 Related Commands SOURce MVIDeo TIMEbase 3 60 AVG1 Analog Video Generator User Manual SOURce Commands SOURce VIDeo3 AMPLitude Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the entire video signal on the specified channel The 3 the command represents the channel You can specify channel 1 2 or 3 If you do not specify a channel the command the instrument assumes channel 1 Changing this parameter affects all nodes below this one Units are percent SOURce VIDeo3 AMPLitude lt numeric_value gt SOURce VIDeo3 AMPLitude Query response lt NR2 gt Command lt numeric_value gt lt NRf gt MIN MAX UP DOWN DEF 100 0 200 Execution error
12. NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies There is interaction with settings of subnode parameters that address amplitudes Examples Command SOUR MVID AMPL STEP 10 Query SOUR MVID AMPL STEP Response 10 0000 Related Commands None 3 36 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo AVIDeo Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the active video portion of the video signal Use the SOUR VID3 AVID command to adjust the active video amplitude for each channel separately when applicable Units are percent SOURce MVIDeo AVIDeo lt numeric_value gt SOURce MVIDeo AVIDeo Query response lt NR2 gt Command lt numeric_value gt lt NRf gt MIN MAX UP DOWN DEF 100 200 Execution error Amplitude for each channel is affected by the related command Command SOUR MVID AVID 20 Query SOUR MVID AVID Response 20 0000 SOURce VIDeo3 AVIDeo AVG1 Analog Video Generator User Manual 3 37 SOURce Commands SOURce MVIDeo AVIDeo STEP Use this command to set or query the UP DOWN step value of the active video portion of the video signal Units are percent Syntax SOURce MVIDeo AVIDeo STEP lt numeric_value gt SOURce MVIDeo AVIDeo STEP
13. SOURce MVIDeo RY lt numeric_value gt SOURce MVIDeo RY Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX UP DOWN DEF 100 200 Execution error Amplitude affected by SOUR MVID AMPL and SOUR MVID CHR AMPL Command SOUR MVID RY 80 Query SOUR MVID RY Response 80 0000 SOURce MVIDeo BY SOURce MVIDeo CHRoma AMPLitude AVG1 Analog Video Generator User Manual 3 51 SOURce Commands SOURce MVIDeo RY STEP Use this command to set or query the UP DOWN step value of the RY compo nent of an HW modulated composite video signal Units are degrees Syntax SOURce MVIDeo RY STEP lt numeric_value gt SOURce MVIDeo RY STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR MVID RY STEP 2 Query SOUR MVID RY STEP Response 2 0000 Related Commands None 3 52 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo SCH PHASe Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use the command to set or query the subcarrier to horizontal phase Units are degrees SOURce MVIDeo SCH PHASe lt numeric_value gt SOURce MVIDeo SCH PHASe Command Query response lt numeric_value gt lt NRf gt lt NR2 gt UP DOWN DEF 0 0
14. Wadden We eae Ee 2 11 Module Parameters croni seie e a e a a eee teen ene ees 2 13 Circle Overlay pe ca aie teed a eae de See aan aed Bn ee 2 14 WMA DRE SERENE SE weet Aen Gee eas the aed a ede ee 2 15 MLS SOD sac Seid eo ie wares AMS a aa dak an eet aA JESSEN Gaace poles g bie ele Sa aise bee aaa a 2 16 Syntax and Commands SYNTAKSEN ides wear Ga aed geek KDE wba Sieh wane wera os 3 1 Programming Model easa tenni e a eee nent nr 3 1 SCPI Commands and Queries 0 cece ee 3 3 Functional Command Groups ce cece cece ree eees 3 5 IMIMG I 87 2 ra tis cnt SNF oto E SLS Soe ONS Sa cae ay SEE solange 3 5 OU PU Sis ear eee Sale Ge shea Teme Se eR eS dea A Saleh 3 6 SENSEN Oe aOR oO NI SSS SCR NW SN ENR E A 3 6 OUNCES Sirens Sareea ese reir Sa fe Paces er era ean a a a E arene 3 7 OUT Pit Commands ss ess esise otoa cece ccc e eee e eee ee eee 3 9 Command Tre it as she Sad sien rata Gee he ad ae a A AA EAN 3 9 OUTPut CIRCle DIAMeter 2 0 eee eee 3 10 AVG1 Analog Video Generator User Manual i Table of Contents OUTPut CIRCle POSition HORizontal 2 0 0 6 6c eee eee ee 3 11 OUTPut CIRCle POSition VERTical 0 0 eee cece eee 3 12 OUT Put CIRGle STATC atc ce a aa eea aud ia ee ale ear Gee seat 3 13 OUTPut CONFIgUre aes cee kre ate aia eee ale eave we alate hare Sledge aware 3 14 SOUT Put STATE aine E a ie glace Suara Mele aud ava ave ale eats bee peaches 3 15 OUTPUt TEXT
15. instrument responses and data format across all SCPI instruments regardless of manufacturer The AVG1 Generator module uses a command language based on the SCPI standard The SCPI language is based on a hierarchical or tree structure see Figure 3 1 that represents a subsystem The top level of the tree is the root node it is followed by one or more lower level nodes OUTPut _ Root node Lower level CIRCle nodes STATe DIAMeter POSition Figure 3 1 Example of a SCPI subsystem hierarchy tree You can create commands and queries from these subsystem hierarchy trees Commands specify actions for the instrument to perform Queries return measurement data and information about parameter settings For more information on creating SCPI commands programming structure and status and events refer to the TG 2000 Signal Generation Platform User Manual AVG1 Analog Video Generator User Manual 3 3 Syntax 3 4 AVG1 Analog Video Generator User Manual EEE Functional Command Groups MMemory Table 3 1 MMEMory commands Command MMEMory LOAD SIGNal MMEMory SIGNal ACTive This section describes the commands in general categories Commands to the module are divided into the following groups MMEMory see TG 2000 Signal Generation Platform User Manual OUTPut m SENSe m SOURce Items followed by question marks are queries items without question marks are commands Some items in this secti
16. to secure the module Je O ve oa amp O A ib KX Q oosen screw Figure C 3 Rear panel removal 6 While ensuring correct alignment of the module flange as shown in Figure C 4 lower the module into the desired slot as shown in Figure C 5 hee Flange fe o Figure C 4 Module flange C 4 AVG1 Analog Video Generator User Manual Appendix C Installation Tighten screw Insert screw Figure C 5 Module Installation 7 Ensure that the connectors on the mother board and the module exactly match before seating the module module firmly in place If the connectors do not match you could bend a pin that N CAUTION The connectors must exactly match before you attempt to press the could damage the module mainframe or both when power is applied 8 Press down evenly on the module until it is firmly in place 9 Refer to Figure C 6 and insert and tighten the top screw which comes with your module and tighten the rear panel screw AVG1 Analog Video Generator User Manual C 5 Appendix C Installation C 6 Signal Set Installation Figure C 6 Top screw 10 Reinstall the top cover and insert and tighten all top cover screws 11 Plug in the instrument power cord Power on the mainframe by setting the rear panel power switch to ON and pressing the front panel
17. 0 59G 0 11B of the R G 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 which allows information to be moved around in the frequency domain in order to facilitate transmission or frequency domain multiplexing See Hardware and Software modulation for details NTSC National Television System Committee The organization that developed the television standard currently in use in the United States Canada and Japan Now generally used to refer to that standard PAL Phase Alternate Line Refers to one of the television systems used in Europe and many other parts of the world The phase of one of the color difference signals alternates from line to line to help cancel out phase errors Quick Draw Mode Enables an overlay to draw faster while you are changing values Full resolution is invoked once values stop changing R Y One of the color difference signals used in the NTSC and PAL systems obtained by subtracting luminance Y from the red camera signal R AVG1 Analog Video Generator User Manual Glossary SCPI Standard Commands for Programmable Instruments SCPI is a standard that provides guidelines for remote programming of instruments These guidelines provide a consistent programming environment for instrument control and data transfer Signal Set An arbitrary
18. EP SOURce VIDeo3 BURSt SOURce VIDeo3 BURSt STEP SOURce VIDeo3 PEDestal SOURce VIDeo3 PEDestal STEP SOURce VIDeo3 SYNC SOURce VIDeo3 SYNC STEP Appendices Appendix A Specifications cc cece cece cree cere eee Certifications Standards Conformance Appendix B SCPI Conformance Information Appendix C Installation 0 ccc cece cere eee renee Preventing Component Damage Module Installation Hardware Installation Signal Set Installation Configure Video Outputs Signal Backup and Module Removal Required Equipment Signal Backup Module Removal Glossary and Index AVG1 Analog Video Generator User Manual ie raleasenekenene DODJDJODOWVOND DD Fm erer Table of Contents List of Figures Figure 2 1 Menu structure for the AVG1 Generator module 2 1 Figure 3 1 Example of a SCPI subsystem hierarchy 3 3 Figure C 1 TG 2000 Platform mainframe rear panel showing slot numbering 0 cece cece c ere en ence cees C 2 Figure C 2 Top cover removal ccecceeccccceececes C 3 Figure C 3 Rear panel removal cece cee ce cee ceeee C 4 Figure C 4 Module flange 0 cc cece eee c weer e ec eees C 4 Figure C 5 Module installation 0 cece eee eeeenee C 5 Figure C 6 Top screw ccc cece e cece cece cece reese eeees C 6 iv AVG1 Analog Video Generator User Manual Table of Contents List
19. Generator User Manual 2 3 Operating Procedures Power On and Select the Module 2 4 After the module is installed in the mainframe and the mainframe is installed in the rack or other location where it will be used power on the mainframe and select the module by following these steps 1 2 3 Set the rear panel power switch to the ON position Press the front panel POWER switch if necessary Wait for a few seconds as the mainframe executes confidence tests on the mainframe and modules Check for any error messages that might appear When self tests are complete the instrument displays icons representing each installed generator module If an installed module is not represented refer to Troubleshooting in the AVG1 Analog Video Generator Service Manual NOTE The illustrations in these procedures show the factory default name AVGI X where X represents the slot number in which the module is installed However because you can rename the module your icons may display a different name Refer to the TG 2000 Signal Generation Platform User Manual for information about editing the module name 5 Since you have just powered on the mainframe the Modules window shown below is displayed To select the module at other times push the front panel Modules button rs No Setup D AVG Touch the module icon on the display or push the Signal Sets button if the desired icon is already highlighted The installed sig
20. ION 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 The following symbols may appear on the product A A m DANGER Protective Ground ATTENTION Double High Voltage Earth Terminal Refer to Manual Insulated AVG1 Analog Video Generator User Manual vii General Safety Summary Certifications and Refer to the specifications section for a listing of certifications and compliances Compliances that apply to this product viii AVG1 Analog Video Generator User Manual SS E Service Safety Summary Only qualified personnel should perform service procedures Read this Service Safety Summary and the General Safety Summary before performing any service procedures Do Not Service Alone Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present Disconnect Power To avoid electric shock disconnect the main power by means of the power cord or if provided the power switch Use Care When Servicing With Power On Dangerous voltages or currents may exist in this produ
21. Manual 3 57 SOURce Commands SOURce MVIDeo SYNC STEP Use this command to set or query the UP DOWN step value of the sync pulse portion of the video signal Units are percent Syntax SOURce MVIDeo SYNC STEP lt numeric_value gt SOURce MVIDeo S YNC STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR MVID SYNC STEP 10 Query SOUR MVID SYNC STEP Response 10 0000 Related Commands None 3 58 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MViIDeo TIMEbase Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the underlying timebase of the module The units are PPM If the first argument is zero an optional argument of FRAMe or NOFRame will enable or disable the frame reset for the signal The default is NOFRame If the first argument is a nonzero value it will override an optional argument of FRAMe defaulting to NOFRame SOURce MVIDeo TIMEbase lt numeric_value gt lt frame gt SOURce MVIDeo TIMEbase Command Query response lt NR2 gt NOFR lt NR2 gt FRAM lt numeric_value gt lt NRf gt MIN MAX UP DOWN DEF lt frame gt NOFRame FRAMe 200 Execution error AVGI1 module must be enabled Command SOUR
22. N MAX DEF Default Value 1 Errors and Events 200 Execution error Dependencies None Examples Command OUTP TRIG POS VERT STEP 5 Query OUTP TRIG POS VERT STEP Response 5 0000 Related Commands None 3 24 AVG1 Analog Video Generator User Manual OUTPut Commands OUTPut TRIGger TYPE Use this command to select or query the trigger and cursor display types The selections affect the type of cursor displayed and the occurrence of the trigger output The cursor has three display types m PIXel the cursor is displayed as crosshairs m VERTical the cursor is displayed as a horizontal line m HORizontal the cursor is displayed as a vertical line Syntax OUTPut TRIGger TYPE lt type gt OUTPut TRIGger TYPE Parameters Command Query response lt type gt Pixel PIX VERTical VERT HORizontal HOR OFF OFF Default Value PIX Errors and Events 200 Dependencies None Examples Command Query Response Related Commands None AVG1 Analog Video Generator User Manual Execution error OUTP TRIG TYPE PIXEL OUTP TRIG TYPE PIX 3 25 OUTPut Commands 3 26 AVG1 Analog Video Generator User Manual SENSe Commands Use these commands to adjust the timing of the module in relation to the instrument The adjustments can correct for operational line delays Command Tree SENSe CORRection MDELay HORizontal STEP VERTical STEP AVG1 Analog Video Generator User Manual lt numeric_va
23. N step value of the amplitude of the sync pulse portion of the video signal on the specified channel The 3 the command represents the channel You can specify channel 1 2 or 3 If you do not specify a channel the command the instrument assumes channel 1 Units are percent Syntax SOURce VIDeo3 SYNC STEP lt numeric_value gt SOURce VIDeo3 S YNC STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR VID2 SYNC STEP 5 Query SOUR VID2 SYNC STEP Response 5 0000 Related Commands None 3 70 AVG1 Analog Video Generator User Manual Appendices a ee Appendix A Specifications This section contains the specifications for the AVG1 Generator module Table A 1 lists the electrical specifications and Table A 2 lists the EMC compliance specifications All specifications are guaranteed unless labeled typical Typical specifications are provided for your convenience but are not guaranteed Specifications are only valid when the module is installed in a TG 2000 Platform mainframe For a list of environmental specifications refer to the TG 2000 Signal Genera tion Platform User Manual Table A 1 Electrical specifications Characteristics Description Maximum Clock Frequency lt 30 MHz Amplitude Errors Excluding Y C in Y C Composite mode Luminance and Componen
24. R MVID BY STEP Response 5 0000 Related Commands None 3 42 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo CHRoma AMPLitude Use this command to set or query the amplitude of the chroma portion of an HW modulated composite video signal Units are percent Syntax SOURce MVIDeo CHRoma AMPLitude lt numeric_value gt SOURce MVIDeo CHRoma AMPLitude Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX UP DOWN DEF Default Value 100 Errors and Events 200 Execution error Dependencies Amplitude is affected by SOUR MVID AMPL which also affects RY and BY Examples Command SOUR MVID CHR AMPL 90 Query SOUR MVID CHR AMPL Response 90 0000 Related Commands None AVG1 Analog Video Generator User Manual 3 43 SOURce Commands SOURce MVIDeo CHRoma AMPLitude STEP Use this command to set or query the UP DOWN step value of the chroma portion of an HW modulated composite video signal Units are percent Syntax SOURce MVIDeo CHRoma AMPLitude STEP lt numeric_value gt SOURce MVIDeo CHRoma AMPLitude STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR MVID CHR AMPL STEP 5 Query SOUR MVID CHR AMPL STEP Response 5 0000 Related Commands None 3 44 AVG1 Analog Vid
25. Range Power Consumption AVG1 Analog Video Generator User Manual Description SNR to 100 MHz 54 dB RMS relative to 700 mV on quiet line 50 dB max spur 6 MHz to 50 MHz 45 dB max spur 50 MHz to 100 MHz lt 60 dB to 6 MHz From any one channel to any other one channel lt 2 mV peak lt 1 mV peak on full DAC range shallow ramp 0 1 mV per bit lt 2 mV peak lt 1 mV peak on pedestal levels gt 5 mV lt 5 mV on pedestal levels lt 5 mV 40 dB to 6 MHz 75 Q Added to genlock offset timing offsets relative to internal clock and frame reset Adjustable to any point in the video frame TTL compatible if unterminated 10ns 75 Q Adjustable to any point in the video frame 5 Volts 5 5 Watts typical 5 Volts 5 Watts typical 2 Volts 0 6 Watts typical 15 Volts 0 75 Watts typical 15 Volts 0 75 Watts typical Battery 30 uA maximum A 3 Appendix A Specifications Certifications Table A 2 Certifications and compliances Description Meets the intent of Directive 89 336 EEC for Electromagnetic Compatibility when it is used with the product s stated in the specifications table Refer to the EMC specification published for the stated prod ucts May not meet the intent of the direc tive if used with other products Characteristics EMC Compliance Emissions comply with FCC Code of Fed eral Regulations 47 Part 15 Subpart B Class A Limits FCC Compliance Standards Confor
26. Rizontal lt numeric_value gt OUTPut CIRCle POSition HORizontal Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX DEF 0 200 Execution error None Command OUTP CIRC POS HOR 35 Query OUTP CIRC POS HOR Response 35 0000 OUTPut CIRCle POSition VERTical AVGI1 Analog Video Generator User Manual 3 11 OUTPut Commands OUTPut CIRCle POSition VERTical Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the vertical position of the circle as it appears on the active signal The argument is in terms of average picture height OUTPut CIRCle POSition VERTical lt numeric_value gt OUTPut CIRCle POSition VERTical Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX DEF 0 200 Execution error None Command OUTP CIRC POS VERT 35 Query OUTP CIRC POS VERT Response 35 0000 OUTPut CIRCle POSition HORizontal AVG1 Analog Video Generator User Manual OUTPut Commands OUTPut CIRCle STATe Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the display of the circle overlay onto the video signal NOTE The settings of the circle overlay are independent of signal activity OUTPut CIRCle STATe lt Boolean gt OUTPut CIRCle STATe Command Query res
27. Signal The high frequency portion of the video signal 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 Created by adding quadrature amplitude modu lated U and V to the luminance signal Frame A frame sometimes called a picture contains all the information required for a complete picture For interlaced scan systems there are two fields in a frame GBR Green Blue and Red 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 AVG1 Analog Video Generator User Manual Glossary 1 Glossary Glossary 2 Hardware Modulation When signals are hardware modulated digital data from the Cg and Cr channels are quadrature modulated at the subcarrier frequency and added to the luminance Y channel This method is used for NTSC signals in cases where the best nonlinearity specifications are required The hardware modulator is also used to create YC composite signals SVHS or Hi 8 Luminance The signal which represents brightness or the amount of light in the picture This is the only signal required for black and white pictures and for color systems it is obtained as a weighted sum Y 0 3R
28. Te POSition HORizontal STEP VERTical STEP TYPE AVG1 Analog Video Generator User Manual lt numeric_value gt lt numeric_value gt lt numeric_value gt lt Boolean gt lt argument gt lt Boolean gt lt string gt lt numeric_value gt lt numeric_value gt lt Boolean gt lt Boolean gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt type gt 3 9 OUTPut Commands OUTPut CIRCle DIAMeter Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the diameter of the displayed circle The argument is the percent of average picture height OUTPut CIRCle DIAMeter lt numeric_value gt OUTPut CIRCle DIAMeter Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX DEF 90 200 Execution error None Command OUTP CIRC DIAM 75 Query OUTP CIRC DIAM Response 75 0000 OUTPut CIRCle POSition VERTical OUTPut CIRCle POSition HORizontal AVG1 Analog Video Generator User Manual OUTPut Commands OUTPut CIRCle POSition HORizontal Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the horizontal position of the circle as it appears on the active signal The argument is in terms of average picture width OUTPut CIRCle POSition HO
29. Test Signal icon until Push Test desired signal is selected Signals button Touch Module Touch Active Parameters Signal Parameters Module Parameters window Active Signal Parameters window Touch Output to Touch Module Timing enable or disable the Circle Overlay Trigger module output signal Output or Output Config Touch Video Text Overlay or Signal Information Module Timing Circle Overlay Trigger or Video Parameters Text Overlay or Output Config window Signal Information window Set module timing with respect to the BG1 Set video parameters adjust text on module create circle overlay configure trigger or signal or view information about the signal outputs selected signal Figure 2 1 Menu structure for the AVG1 Generator module AVG1 Analog Video Generator User Manual 2 1 Functional Overview Outputs This module has four BNC connectors on the rear panel one Trigger Out and three channel outputs The channel outputs can be configured as shown in Table 2 1 To configure the outputs refer to Configure the Outputs on page C 9 Table 2 1 AVG1 Output Configurations Connector GBR Y B Y R Y Hardware modulated Software modulated Channel 1 Composite 1 Channel 2 B BY CorComposite Composite 2 Channel 3 R RY Composte Composite 3 Modulated Signals There are two methods of signal generation for composite signals hardware modulation and software modulation Hardware modulated signals are
30. The default is 0 000 usec 6 Rotate the Navigation knob counterclockwise to advance the timing or clockwise to delay the timing Set the timing close to the desired value 7 Touch H Feel horizontal resolution to select Fine resolution Fine resolution move in subclock cycle increments 8 Rotate the Navigation knob counterclockwise to advance the timing or clockwise to delay the timing Set the final value 9 You can also select Vertical or Horizontal and enter values from the keypad 10 If you want to reset the values touch Reset All This sets horizontal and vertical to 0 000 usec and 0 lines 11 Press Quit to exit the window AVG1 Analog Video Generator User Manual 2 15 Operating Procedures 2 16 Trigger You can select one of the following types of Trigger signals to send to the rear panel Trigger BNC connector Horizontal One trigger pulse per line at the location entered Vertical One trigger pulse per color frame at beginning of the entered line Pixel One trigger pulse per color frame at the intersection of the horizontal and vertical trigger NOTE Triggers are active throughout the line However cursors are only active during active video To select the trigger output follow these steps 1 In the Module Parameters window shown on page 2 13 touch Trigger to enter the Trigger window shown below S25 270 Color Bars 100 Color Bars Turn on the cursor by touching the On Off on th
31. There is interaction with settings of subnode parameters that address amplitudes Command SOUR VID AMPL 90 Query SOUR VID AMPL Response 90 0000 SOURce MVIDeo AMPLitude AVG1 Analog Video Generator User Manual 3 61 SOURce Commands SOURce ViIDeo3 AMPLitude STEP Use this command to set or query the UP DOWN step value of the entire video signal on the specified channel The 3 the command represents the channel You can specify channel 1 2 or 3 If you do not specify a channel the command the instrument assumes channel 1 Units are percent Syntax SOURce VIDeo3 AMPLitude STEP lt numeric_value gt SOURce VIDeo3 AMPLitude STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR VID AMPL STEP 5 Query SOUR VID AMPL STEP Response 5 0000 Related Commands None 3 62 AVG1 Analog Video Generator User Manual SOURce Commands SOURCce VIDeo3 AVIDeo Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the active video portion of the video signal on the specified channel The 3 the command represents the channel You can specify channel 1 2 or 3 If you do not specify a channel the command the instrument assumes channel 1 This co
32. User Manual Tektronix AVGI Analog Video Generator 070 9048 03 This document applies to firmware version 2 0 and above www tektronix com Copyright Tektronix Inc All rights reserved Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Tektronix Inc P O Box 500 Beaverton OR 97077 TEKTRONIX and TEK are registered trademarks of Tektronix Inc WARRANTY Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If a product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is lo
33. a module in the empty slot proceed to Module Installation on page C 2 8 To ensure proper cooling and adherence to EMI shielding requirements install a blank panel to cover any empty slots in the rear panel A spare blank panel is included in the TG 2000 Platform mainframe accessories kit 9 Tighten the screws on the blank rear panel 10 Reinstall the top cover and insert and tighten all top cover screws AVG1 Analog Video Generator User Manual C 11 Appendix C Installation C 12 AVG1 Analog Video Generator User Manual SS aaa EE a Glossary and Index a ce Glossary APH Active Picture Height Black Burst Also called color black black burst is a composite video signal consisting of all horizontal and vertical synchronization information and burst Typically used as the house reference synchronization signal in television facilities Burst A small reference packet of the subcarrier sine wave sent on every line of composite 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 obtained by subtracting luminance Y from the blue camera signal B Chrominance Chrominance refers to the color information in a television picture Chrominance can be further broken down into two properties of color hue and saturation Chrominance
34. able and rise time The signal also becomes unframed it has no phase relationship with the genlock input AGLI Generator module Two modules with the same time base offset value are not necessarily framed together AVG1 Analog Video Generator User Manual 1 1 Getting Started Accessories Table lists standard and optional accessories for the module Standard accessories are included with the module and optional accessories are available for purchase to use with the module Table 1 1 Standard and Optional Accessories Accessory Typo of accessory Part number AVG1 Analog Video Generator User Manual Standard 070 9048 XX T 10 Torx Tip Standard 003 1604 XX Screws 2 ea Standard 211 0725 XX Blank rear panel Standard 333 4113 XX AVG1 Analog Video Generator Service Manual Optional 070 9677 XX Configuration The module does not require any hardware configuration However you can configure the channel outputs Refer to Configure the Outputs on page C 9 for instructions 1 2 AVG1 Analog Video Generator User Manual Getting Started Functional Check For this procedure you will need a television monitor a 75 Q coaxial cable and a 75 Q termination To determine if the module is operating correctly follow these steps 1 If the module is not installed into the platform use the installation proce dures on page C 2 Power on the platform The platform runs a self test on all modules To determine if the self test was s
35. and lt numeric_value gt lt NRf gt MIN MAX DEF Query response lt NR2 gt Default Value Value as saved in signal Errors and Events 200 Execution error Dependencies NOne Examples Command OUTP TEXT POS HOR 35 Query OUTP TEXT POS HOR Response 35 Related Commands OUTPut TEXT POSition VERTical 3 18 AVG1 Analog Video Generator User Manual OUTPut Commands OUTPut TEXT POSition VERTical Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the vertical position of text in the video signal The argument is in terms of average picture height OUTPut TEXT POSition VERTical lt numeric_value gt OUTPut TEXT POSition VERTical Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX DEF Value as saved in signal 200 Execution error None Command OUTP TEXT POS VERT 35 Query OUTP TEXT POS VERT Response 35 OUTPut TEXT POSition HORizontal AVG1 Analog Video Generator User Manual 3 19 OUTPut Commands OUTPut TRIGger CURSor STATe Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands 3 20 Use this command to set or query the cursor display This command enables and disables the trigger display and does not affect the trigger signal OUTPut TRIGger CURSor STATe lt Boolean gt OUTPut TRIGger CURSor STATe
36. ary ccc cece cere cece ence cece vii Service Safety Summary cece cece cere cece ence cece ix About This Manual 02 0 eee cece eee eee en eens xi Related Manuals ess aeige aioe teea Eee edge lacs atten te ag dooce Sarai eg xi Contacting Tektronix 1 0 0 cece eee ce eee teen eens xii Getting Started Getting Started sss sis ie ei eae We esln ae a e wie in Oa ieee Ben E 1 1 ACCESSOTIES fins sener Wicd Neate nina hata eee Laat chet eed eam ee Tri 1 2 Configuration gi sii sig eit estoy aa N eS aa ge Ghia ee 1 2 Functional Check irigis ian aac ois aia Dated ee ed es 1 3 Operating Basics Functional Overview 0 cece cece reece reece cer EES 2 1 OUPS heh tated cls ou EE chet ren ROER SYRER RER ESS IEEE AE N 2 2 Modulated Sirnasari a E AE EA E E weave nda aug 2 2 OnlinesHel pr ao hre a a ar E EE RAE AATA A E A aa 2 2 Operating Procedures ssssessessesesssossosssssessosss 2 3 Equipment Ho k p ssi aia saa AE E E cee ence eens 2 3 Power On and Select the Module 0 0 ccc eee eee eee eee 2 4 Output Signal lt 2 e co sn An EDR Gh ek ee VE Te eG ae Sant 2 5 Enable Disable the Output Signal 00 eee eee eee ee 2 5 Select the Output Signal 0 ee eee eee eee ee 2 5 Active Signal Parameters 0 0 eee eee ee een ee ee ees 2 7 Signal Information 0 ES cece eee eee eee nee eee 2 8 Text Overlay ove cena el ee Sie ee ae BG Se tana 2 9 Video Parameters ronius sa ieee
37. as ea 3 Each test signal icon in the Test Signals window represents one or more signals In this example the 100 Color Bars signal is being generated 4 To change to another Color Bar signal touch the Color Bar repeatedly to cycle through all available signals You can also display the complete list of test signals available under a selected test signal icon by touching the list box or by rotating the Navigation knob and then select a signal by pressing the front panel Select button 5 To change to a different signal type such as Linearity touch the correspond ing icon on the display Then select the signal as shown in step 4 6 To select the output signal using the List window display the list of test signals by pushing the front panel List button Use the Navigation arrow keys to highlight the module and signal and then push the Select button 2 6 AVG1 Analog Video Generator User Manual Operating Procedures Active Signal Parameters The following procedures discuss windows that are accessed through the Active Signal Parameters window shown below Changes that you make to parameters in any of these windows affect only the active signal To enter the Active Signal Parameters window for the AVG1 Generator module follow these steps 1 Select the AVG1 Generator module if not already selected 2 Push the Test Signals button 3 Touch Active Signal Parameters at the bottom of the screen The Active Signal Parame
38. cated Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES E Table of Contents General Safety Summ
39. contains information about SCPI commands programming structure and status and events for the platform Some of this information applies to all generator modules including the AVG1 Generator module This manual is a standard accessary to the TG 2000 Platform mainframe m The TG 2000 Signal Generation Platform Service Manual describes how to service the mainframe to the module level and provides general information about servicing generator modules This optional manual must be ordered separately A module user manual is included with each optional module Contact your Tektronix representative for a list of generator and special function modules AVG1 Analog Video Generator User Manual xi Preface Contacting Tektronix xii Product Support Service support Toll free Number Postal Address Web site For questions about using Tektronix measurement products call toll free in North America 1 800 833 9200 6 00 a m 5 00 p m Pacific time Or contact us by e mail tm_app_supp tek com For product support outside of North America contact your local Tektronix distributor or sales office Tektronix offers a range of services including Extended Warranty Repair and Calibration services Contact your local Tektronix distributor or sales office for details For a listing of worldwide service centers visit our web site In North America 1 800 833 9200 An operator can direct your call Tektronix Inc Depar
40. ct Disconnect power remove battery if applicable and disconnect test leads before removing protective panels soldering or replacing components To avoid electric shock do not touch exposed connections AVG1 Analog Video Generator User Manual ix Service Safety Summary x AVG1 Analog Video Generator User Manual E Preface This manual documents the capabilities specifications operation and installa tion of the AVG1 Generator module About This Manual This manual is composed of the following sections m Getting Started provides a product description incoming inspection procedure and a standard and optional accessories list It also provides procedures on how to install signal sets m Operating Basics describes the windowed menu interface and how to control the module through the interface in conjunction with the front panel m Syntax and Commands defines the syntax used in command descriptions presents a list of all command subsystems and presents detailed descriptions of all programming commands m Appendices provides additional information including the Specifications and hardware installation procedures Related Manuals The following documents are also available m The AVGI Analog Video Generator Service Manual describes how to service the AVG1 module This optional manual must be ordered separately m The TG 2000 Signal Generation Platform User Manual describes how to use the TG 2000 Platform It also
41. cters c Touch OK when text is complete 9 Touch Quit Save to exit the window 2 12 AVG1 Analog Video Generator User Manual Operating Procedures Module Parameters The following procedures discuss windows that are accessed through the Module Parameters window shown below Changes that you make to parameters in any of these windows affect the entire module To enter the Module Parameters window for the AVG1 Generator module follow these steps 1 2 3 Select the AVG1 Generator module if not already selected Push the Test Signals button Touch Module Parameters at the bottom of the screen The Module Parameters window appears as shown below Another way to access this window is to push the Modules button ensure that the module is highlighted push the Edit button and then touch Module Parameters AVG1 Analog Video Generator User Manual 2 13 Operating Procedures Circle Overlay You can define a circle that is overlaid on the test signal output The Circle Overlay parameters settings affect all test signals from this module Entered values are constant regardless of the test signal or video standard To define a circle overlay follow these steps 1 Inthe Module Parameters window shown on page 2 13 touch Circle Overlay to enter the Circle Overlay window The Circle Overlay window is shown in the following illustration 2 Touch On Off to turn on the circle overlay 3 Touch Diam 4 Rotat
42. d Commands Use this command to set or query the amplitude of the burst pulse portion of composite video signals on the specified channel The 3 the command represents the channel You can specify channel 1 2 or 3 If you do not specify a channel the command the instrument assumes channel 1 This command is used to control each channel separately when applicable Units are percent SOURce VIDeo3 BURSt lt numeric_value gt SOURce VIDeo3 BURSt Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX UP DOWN DEF 100 200 Execution error Amplitude is also affected by SOUR MVID BURS Command SOUR VID BURS 0 Query SOUR VID BURS Response 0 0000 None AVG1 Analog Video Generator User Manual 3 65 SOURce Commands SOURCce VIDeo3 BURSt STEP Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands 3 66 Use this command to set or query the UP DOWN step value of the amplitude of the burst pulse portion of composite video signals on the specified channel The 3 the command represents the channel You can specify channel 1 2 or 3 If you do not specify a channel the command the instrument assumes channel 1 Units are percent SOURce VIDeo3 BURSt STEP lt numeric_value gt SOURce VIDeo3 BURSt STEP Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX DEF 1 0 200 Execu
43. e display A cursor provides line and pixel selection anywhere within the frame Touch Type on the display until the desired type of trigger is displayed m Horizontal one trigger pulse per line at location entered m Vertical one trigger pulse per color frame at beginning of line entered m Pixel one trigger pulse per color frame at intersection of horizontal and vertical trigger If the type is horizontal or pixel touch H Pos us to adjust horizontal position by time or H Pos samples to adjust horizontal position by AVG1 Analog Video Generator User Manual Operating Procedures samples Rotate the Navigation knob until the desired position is reached or enter a value using the keypad and push enter 5 If the type is vertical or pixel touch V Pos and rotate the Navigation knob until the desired line is reached You can also enter a value using the keypad 6 Touch Reset All if you want to set all the parameters to the default settings H Pos to zero and V Pos to 1 7 Touch Quit to exit the window AVG1 Analog Video Generator User Manual 2 17 Operating Procedures 2 18 AVG1 Analog Video Generator User Manual DS as Syntax and Commands Syntax Programming Model Addressing Module Test Signals Command Arguments This section contains information on the Standard Commands for Programmable Instruments SCPI and the programming structure you can use to program your module Specific conditions must
44. e millivolts Syntax SOURce VIDeo3 PEDestal STEP lt numeric_value gt SOURce VIDeo3 PEDestal STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 Errors and Events 200 Execution error Dependencies None Examples Command SOUR VID1 PED STEP 5 Query SOUR VID1 PED STEP Response 5 0000 Related Commands None 3 68 AVG1 Analog Video Generator User Manual SOURce Commands SOURCce VIDeo3 SYNC Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the sync pulse portion of the video signal on the specified channel The 3 the command represents the channel You can specify channel 1 2 or 3 If you do not specify a channel the command the instrument assumes channel 1 Sync amplitude must be set for each channel when applicable Units are percent SOURce VIDe03 S YNC lt numeric_value gt SOURce VIDeo3 S YNC Command lt numeric_value gt lt NRf gt MIN MAX UP DOWN DEF Query response lt NR2 gt 100 200 Execution error Amplitude is also affected by SOUR MVID SYNC Command SOUR VID2 SYNC 90 Query SOUR VID2 S YNC Response 90 0000 SOURce MVIDeo S YNC STEP AVG1 Analog Video Generator User Manual 3 69 SOURce Commands SOURce VIDeo3 SYNC STEP Use this command to set or query the UP DOW
45. e the Navigation knob or enter a value from the keypad Rotating the knob changes the diameter by percentages of Active Picture Height APH 5 Select H Pos and rotate the Navigation knob to move the circle horizontally by a percentage of APH NOTE As you change the values using the knob the circle is drawn in a quick draw mode Once values stop changing the overlay is redrawn in full resolution 6 Select V Pos and rotate the knob to move the circle vertically by a percent age of APH 7 If you want to reset the values touch Reset All This will set the diameter horizontal and vertical to 90 0 and 0 respectively 8 Press Quit to exit the window AVG1 Analog Video Generator User Manual Operating Procedures Timing You can set the horizontal and vertical timing of this module with respect to the BG1 Generator module Changes you make to timing affect all signals for the AVGI Generator module 1 Inthe Module Parameters window shown on page 2 13 touch Timing The timing window appears as shown in the following illustration 2 Touch Vertical on the display The default setting is 0 lines 3 Rotate the navigation knob counterclockwise to advance the timing or clockwise to delay the timing You can also enter values from the keypad and push the Select button 4 Touch H Feel horizontal resolution to select Coarse resolution Coarse increments are equal to a full cycle of the clock 5 Touch Horizontal
46. eo Generator User Manual SOURce Commands SOURce MVIDeo CHRoma PHASe Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the phase of the chrominance portion of an HW modulated composite video signal Units are degrees SOURce MVIDeo CHRoma PHASe lt numeric_value gt SOURce MVIDeo CHRoma PHASe Command Query response lt numeric_value gt lt NRf gt lt NR2 gt UP DOWN DEF 0 0 200 Execution error None Command SOUR MVID CHR PHAS 5 Query SOUR MVID CHR PHAS Response 5 0000 None AVGI1 Analog Video Generator User Manual 3 45 SOURce Commands SOURce MViIDeo CHRoma PHASe STEP Use this command to set or query the UP DOWN step value of the chrominance phase portion of an HW modulated composite video signal Units are degrees Syntax SOURce MVIDeo CHRoma PHASe STEP lt numeric_value gt SOURce MVIDeo CHRoma PHASe STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR MVID CHR PHAS STEP 5 Query SOUR MVID CHR PHAS STEP Response 5 0000 Related Commands None 3 46 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo LUMinance Use this command to set or query the amplitude of the luminance portion o
47. eo LUMinance SOURce MVIDeo LUMinance STEP SOURce MVIDeo PEDestal SOURce MVIDeo PEDestal STEP SOURce MVIDeo RY SOURce MVIDeo RY STEP SOURce MVIDeo SCH PHASe SOURce MVIDeo SCH PHASe STEP SOURce MVIDeo SUBCarrier OFFSet SOURce MVIDeo SUBCarrier OFFSet STEP SOURce MVIDeo SYNC SOURce MVIDeo SYNC STEP SOURce MVIDeo TIMEbase SOURce MVIDeo TIMEbase STEP SOURCce VIDeo3 AMPLitude SOURCce VIDeo3 AMPLitude STEP SOURCce VIDeo3 AVIDeo SOURCce VIDeo3 AVIDeo STEP SOURCce VIDeo3 BURSt AVG1 Analog Video Generator User Manual Description Set or query video signal amplitude Set or query video signal amplitude step size Set or query active video amplitude Set or query active video amplitude step size Set or query burst pulse amplitude Set or query burst pulse amplitude step size Set or query channel BY component amplitude Set or query channel BY step size Set or query channel chroma amplitude Set or query channel chroma amplitude step size Set or query channel chroma phase Set or query channel chroma phase step size Set or query channel luminance amplitude Set or query channel luminance amplitude step size Set or query pedestal amplitude Set or query pedestal amplitude step size Set or query channel RY component amplitude Set or query channel RY step size Set or query channel Set or query channel Set or query channel Set or query channel Set or query
48. exist before programming commands will affect the test signal generated by a module The following two steps must be performed before the test module will respond to signal parameter commands 1 Select the module to be addressed before executing any commands Many of the commands are shared by several modules and will be accepted without a reported error 2 Enable the module using the OUTPut STATe ON command You must enable the output state of the module before you change the test signal parameters Many commands will accept either string or numeric arguments For example a Boolean argument can either be 1 or ON Signal parameter commands that have a STEP node can accept either a numeric value or they can accept a string argument that refers to the STEP increment Signal parameter commands with a STEP node will accept the following strings in addition to a numeric value UP Use this argument to increase the parameter value one increment as defined by the STEP value DOWN Use this argument to decrease the parameter value one increment as defined by the STEP value AVG1 Analog Video Generator User Manual 3 1 Syntax 3 2 Argument Example MINimum Use this argument to set the parameter value to the minimum acceptable value MAXimum Use this argument to set the parameter value to the maximum acceptable value DEFault Use this argument to set the parameter value to the default value The follow
49. f an HW modulated composite video signal Units are percent Syntax SOURce MVIDeo LUMinance lt numeric_value gt SOURce MVIDeo LUMinance Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX UP DOWN DEF Default Value 100 Errors and Events 200 Execution error Dependencies Amplitude is affected by the related command Examples Command SOUR MVID LUM 95 Query SOUR MVID LUM Response 95 0000 Related Commands SOUR MVID AMPL AVGI1 Analog Video Generator User Manual 3 47 SOURce Commands SOURce MVIDeo LUMinance STEP Use this command to set or query the UP DOWN step value of the luminance portion of an HW modulated composite video signal The argument is percent of luminance Syntax SOURce MVIDeo LUMinance STEP lt numeric_value gt SOURce MVIDeo LUMinance STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR MVID LUM STEP 5 Query SOUR MVID LUM STEP Response 5 0000 Related Commands None 3 48 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo PEDestal Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the pedestal portion of the video signal Use the
50. group of signals Soft key An item on the display that changes state or initiates an action when you touch it on screen You use soft keys to select test signals or enter a file name Software Modulation When signals are software modulated the data is directly stored in each channel of fast access memory in which case the AVG1 can output three different composite signals With software modulated signals the subcarrier is directly defined when the signal data is created Termination In order to accurately send a signal through a transmission line there must be an impedance at the end that matches the impedance of the source and of the line itself Amplitude errors and reflections will otherwise result Video is a 75 Q system so a 75 Q terminator must be put at the end of the signal path Abbreviation for luminance AVG1 Analog Video Generator User Manual Glossary 3 Glossary Glossary 4 AVG1 Analog Video Generator User Manual Index A Accessories 1 2 Active signal parameters 2 7 BNC configurations 2 2 C Circle overlay 2 14 Commands rules for forming 3 1 syntax 3 1 Configurations output 2 2 D Disable the output signal 2 5 E Electrical specifications A 1 Enable the output signal 2 5 F Functional check 1 3 Functional overview 2 1 H Hardware modulated signals 2 2 Hierarchy SCPI 3 3 Installation signal sets C 6 AVG1 Analog Video Generator User Manual Modulated signals
51. gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SENS CORR MDEL VERT STEP 2 Query SENS CORR MDEL VERT STEP Response 2 0000 Related Commands None AVG1 Analog Video Generator User Manual 3 31 SENSe Commands 3 32 AVG1 Analog Video Generator User Manual a SOURce Commands Use the SOURce subsystem to control the module s signal These commands allow you to adjust many parameters NOTE The VIDeo node uses the numeral 3 as a suffix to accommodate the selection of different channels the module AVG1 Analog Video Generator User Manual 3 33 SOURce Commands Command Tree SOURce MVIDeo AMPLitude STEP AVIDeo STEP BURSt STEP BY STEP CHRoma AMPLitude STEP PHASe STEP LUMinance STEP PEDestal STEP RY STEP SCH PHASe STEP SUBCarrier OFFSet STEP SYNC STEP TIMEbase STEP VIDeo3 AMPLitude STEP AVIDeo STEP BURSt STEP PEDestal STEP SYNC STEP lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt nu
52. ing example demonstrates the effect of each argument used with a step value 1 INSTrument SELect AVG1 selects the analog video generator module located in the slot number indicated by the symbol 2 OUTPut STATe ON enables the module and displays the loaded test signal 3 OUTPut CIRCle STATe ON displays a circle on the video display NOTE OUTPut CIRCle DIAMeter uses an argument that is the percent of picture height 4 OUTPut CIRCle DIAMeter DEFault sets the circle diameter to 90 percent of the screen height 5 OUTPut CIRCle DIAMeter STEP 10 sets the step increment to 10 percent 6 OUTPut CIRCle DIAMeter DOWN changes the circle diameter to 80 percent of the screen height 7 OUTPut CIRCle DIAMeter 50 changes the circle diameter to 50 percent of the screen height 8 OUTPut CIRCle DIAMeter MAXimum changes the circle diameter to 100 percent of the screen height 9 OUTPut CIRCle DIAMeter MINimum changes the circle diameter to 0 percent of the screen height 10 OUTPut CIRCle DIAMeter UP changes the circle diameter to 10 percent of the screen height AVG1 Analog Video Generator User Manual Syntax SCPI Commands and Queries SCPI is a standard created by a consortium that provides guidelines for remote programming of instruments These guidelines provide a consistent program ming environment for instrument control and data transfer This environment uses defined programming messages
53. is command to set or query the current string for the text mode Text information is added to the active signal To save text with a signal the signal must be saved OUTPut TEXT DATA lt string gt OUTPut TEXT DATA Command Query response lt string gt lt string gt Value as saved in signal 200 Execution error None Command OUTP TEXT DATA This is a test Query OUTP TEXT DATA Response This is a test OUTPut TEXT POSition VERTical OUTPut TEXT POSition HORizontal AVG1 Analog Video Generator User Manual OUTPut Commands OUTPut TEXT STATe Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the state of the text overlay OUTPut TEXT STATe lt Boolean gt OUTPut TEXT STATe Command Query response lt Boolean gt ON or 1 OFF or 0 1 0 Not applicable 200 Execution error None Command OUTP TEXT STAT 1 Query OUTP TEXT STAT Response 1 OUTPut TEXT POSition VERTical OUTPut TEXT POSition HORizontal OUTPut TEXT DATA AVGI1 Analog Video Generator User Manual 3 17 OUTPut Commands OUTPut TEXT POSition HORizontal Use this command to set or query the horizontal position of text in the video signal The argument is in terms of average picture width Syntax OUTPut TEXT POSition HORizontal lt numeric_value gt OUTPut TEXT POSition HORizontal Parameters Comm
54. lue gt lt numeric_value gt lt numeric_value gt lt numeric_value gt 3 27 SENSe Commands SENSe CORRection MDELay HORizontal Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands 3 28 Use this command to set or query the horizontal timing delay of the module with respect to the rest of the instrument Argument units are microseconds If the argument exceeds the horizontal time value then the vertical delay is adjusted to accommodate the requested delay Settings are saved through power cycles SENSe CORRection MDELay HORizontal lt numeric_value gt SENSe CORRection MDELay HORizontal Command Query response lt numeric_value gt lt NRf gt lt NR2 gt UP DOWN DEF 0 0 200 Execution error None Command SENS CORR MDEL HOR 23 0 Query SENS CORR MDEL HOR Response 23 0000 SENSe CORRection MDELay HORizontal AVG1 Analog Video Generator User Manual SENSe Commands SENSe CORRection MDELay HORizontal STEP Use this command to set or query the step increment used by the UP or DOWN commands Argument units are microseconds Syntax SENSe CORRection MDELay HORizontal STEP lt numeric_value gt SENSe CORRection MDELay HORizontal STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0000 Errors and Events 200 Execution error Dependencies None Examples
55. mance The AVG1 conforms to the following standards m EBU N10 ITU R BT 624 m SMPTE 170M A 4 AVG1 Analog Video Generator User Manual EEE EE ET Appendix B SCPI Conformance Information All commands in the AVG1 Generator module are based on SCPI Version 1994 0 Table B 1 lists all commands supported by the generator The columns at right show whether a command is defined in the SCPI 1994 0 standard or not Table B 1 SCPI Conformance Information Not Defined Defined in SCPI In SCPI Command 1994 0 1994 0 OUTPut CIRCle DIAMeter a STATe POSition HORizontal wn VERTical a CONFigure al STATe y TEXT DATA a POSition HORizontal wn VERTical a STATe a TRIGger TYPE a CURSor STATe in POSition HORizontal al HORizontal STEP in VERTical a VERTical STEP wn SENSe CORRection MDELay HORizontal Va HORizontal STEP in VERTical a VERTical STEP Va AVG1 Analog Video Generator User Manual B 1 Appendix B SCPI Conformance Information Table B 1 SCPI Conformance Information cont Not Defined Defined in SCPI In SCPI Command 1994 0 1994 0 SOURce MVIDeo AMPLitude ll STEP 8 gt AVIDeo lf gt STEP 8 gt BURSt lg STEP 8 gt BY a JE STEP Ug CHRoma AMPLitude 0 8 gt STEP ooo 8 gt PHASe ooo 8 gt STEP lg LUMinance gt STEP 8 gt PEDestal Ug STEP ooo 8 gt RY fe ale STEP
56. meric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt lt numeric_value gt AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo AMPLitude Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the entire video signal Units are percent NOTE Changing this parameter affects all nodes below this one SOURce MVIDeo AMPLitude lt numeric_value gt SOURce MVIDeo AMPLitude Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX UP DOWN DEF 100 0 200 Execution error There is interaction with settings of subnode parameters that address amplitudes Command SOUR MVID AMPL 90 Query SOUR MVID AMPL Response 90 0000 SOURce VIDeo3 AMPLitude AVG1 Analog Video Generator User Manual 3 35 SOURce Commands SOURce MVIDeo AMPLitude STEP Use this command to set or query the UP DOWN step value of the entire video signal Units are percent Syntax SOURce MVIDeo AMPLitude STEP lt numeric_value gt SOURce MVIDeo AMPLitude STEP Query response lt
57. meters window opens as shown below Different signals may display a different list in this window Use the Navigation arrow keys to select the parameter you want to change The Time Base Offset parameter is described on page 1 1 NTSC1 Monitor _Convergence Pattern 3 Enter a value using the knob or keypad and then touch Quit Save 4 If you want to reset all the parameters to their previously saved values touch Reset NOTE If you change the value for Active Video Gain the Luma Ampl Chroma Gain Active R Y Ampl and Active B Y Ampl values also change If you change the value for Chroma Gain the Active R Y Ampl and Active B Y Ampl values also change AVG1 Analog Video Generator User Manual 2 11 Operating Procedures 5 Press Quit Save A dialog box appears NOTE If you modify any signal that was shipped on the factory disks the platform adds an underscore to the front of the name 6 Touch Save As A text entry window appears as shown in the following illustration The platform suggests a new test signal name for you by adding an underscore to the front of the current name 100 Color Bars 7 If you want to use the displayed name touch OK 8 To use a different name do the following a From the Text Entry window delete the suggested name using the BS key and then enter new text You cannot backspace over an underscore character b Touch Set 1 or Set 2 to provide additional sets of chara
58. mmand controls the active video amplitude for each channel separately when applicable Units are percent SOURce VIDeo3 AVIDeo lt numeric_value gt SOURce VIDeo3 AVIDeo Query response lt NR2 gt Command lt numeric_value gt lt NRf gt MIN MAX UP DOWN DEF 100 200 Execution error Amplitude is also affected by SOUR VID MVID Command SOUR VID3 AVID 20 Query SOUR VID3 AVID Response 20 0000 SOURce MVIDeo AVIDeo AVG1 Analog Video Generator User Manual 3 63 SOURce Commands SOURce VIDeo3 AVIDeo STEP Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands 3 64 Use this command to set or query the UP DOWN step value of the active video portion of the video signal on the specified channel The 3 the command represents the channel You can specify channel 1 2 or 3 If you do not specify a channel the command the instrument assumes channel 1 Units are percent SOURce VIDeo3 AVIDeo STEP lt numeric_value gt SOURce VIDeo3 AVIDeo STEP Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX DEF 1 0 200 Execution error None Command SOUR VID3 AVID STEP 5 Query SOUR VID3 AVID STEP Response 5 0000 None AVG1 Analog Video Generator User Manual SOURce Commands SOURce VIDeo3 BURSt Syntax Parameters Default Value Errors and Events Dependencies Examples Relate
59. n 4 Select Quit Save 5 Touch Select Destination and choose A If desired create a new directory for the signals by selecting New Dir and entering a DOS compatible name 6 Create a new file by by touching New File 7 Select Quit Save to complete the transfer of signal sets to the disk 8 Touch Start Save Saving signals to disk may take several minutes depending on the number and size of test signals To remove the module follow these steps 1 Turn off the platform by pressing the front panel On Standby switch and switching the rear panel power switch to off 2 Unplug the power cord WARNING To avoid a shock hazard always unplug the power cord before removing the top cover Failure to unplug the power cord can result in serious injury or death 3 Remove all top cover screws and remove the top cover See Figure C 2 on page C 3 4 Remove the appropriate rear panel as shown in Figure C 3 on page C 4 Loosen but do not remove the bottom screw You will use it later to secure the rear panel 5 Refer to Figure C 6 on page C 6 and remove the top screw AVG1 Analog Video Generator User Manual Appendix C Installation CAUTION The module will lose its signal memory 30 seconds after you remove it from the TG 2000 Platform mainframe Before removing the module be sure you have backed up the signals 6 Remove the module To leave the slot empty proceed to step 8 of this procedure 7 To install
60. nal sets for the module appear Selections you make after this will pertain to the AVG1 Generator module AVG1 Analog Video Generator User Manual Operating Procedures Output Signal The output signal is supplied on the two rear panel serial outputs To configure the outputs refer to Appendix C Enable Disable the If you disable the module output it releases all system resources used by this Output Signal module 1 2 3 4 5 Select the AVG1 Generator module if not already selected Push the Test Signals button Touch Module Parameters at the bottom of the screen The Module Parameters window shown on page 2 13 appears Touch the Output icon to toggle the state of the module s output signal Touch Quit to exit Select the Output Signal Use the following procedure to select the module s output test signal You can select any of the AVG1 signals that are loaded in your instrument 1 Push the Signal Sets button to open the window shown below Check that there is an icon for each installed signal set If your signal sets are not installed refer to Signal Set Installation on page C 6 ars No Setup AVG1 Analog Video Generator User Manual 2 5 Operating Procedures 2 Touch the desired signal set on the display The Test Signals window for the selected signal set appears In the following example NTSC is selected r NTSC1 Color Bar7100 Color Bars Color Bars 100 Color Bars E
61. ns 4 Touch Text On Off to display the text on your monitor The Signal Text Overlay menu lists the text you previously entered as shown in the following illustration Color Bar 100 Color Bars 5 Touch H Pos and enter a value from the keypad or rotate the knob until the desired horizontal position is reached 6 Touch V Pos and enter a value from the keypad or rotate the knob until the desired vertical position is reached 7 If you want to reset the text horizontal and vertical to previously saved values touch Reset 8 Touch Quit Save A dialog box appears you can enter a new name for the test signal If you touch Save the original test signal is modified to include the overlaid text and an underscore is added to the front of the name If you touch Save As the platform displays a text entry window in which you can rename the signal 2 10 AVG1 Analog Video Generator User Manual Operating Procedures Video Parameters You can adjust the signal parameters of the currently selected active test signal and then rename and save a test signal The original and the modified signal are both saved NOTE To modify and save a Tektronix generated signal you must rename it When you rename and save a signal both the original and the modified signals are saved To modify video parameters follow these steps 1 Inthe Active Signal Parameters window shown on page 2 7 touch Video Parameters 2 The Video Para
62. nt panel button b Touch Module Parameters AVG1 Analog Video Generator User Manual 1 3 Getting Started c Touch Output Config d Select Composite All Channels 10 Adjust your monitor to view the signal Check that the signal appears as expected For example if you selected a color bar signal output check for a color bar signal on the monitor display 11 Move the output cable to each of the channel output connectors in turn to ensure that the appropriate signal appears 12 Move the cable back to Output 1 13 Select a different test signal in the same signal set and check that the displayed signal changes You only need to do this on Output 1 1 4 AVG1 Analog Video Generator User Manual FEE ER Operating Basics _ eee Functional Overview This section provides an overview of the AVG1 Generator module If you are not familiar with the operation of the TG 2000 Signal Generation Platform refer to the TG 2000 Signal Generation Platform User Manual before reading this section Figure 2 1 shows the module s menu structure Push Modules button Modules window Touch AVG1 module Push Edit button Edit Module window Signal Sets window Push Signal Touch Rename Touch Module Touch desired signal set J Sets Sel Module Parameters usually represents format Rename Module window Test Signals window Enter new name for To select output signal touch module desired
63. odule slot assignments Module Slots in which the module can be installed AGL1 Genlock module Slot 2 or 3 AVG1 Generator module Slots 2 through 10 AWVG1 Generator module Slots 2 through 10 BG1 Generator module Slot 2 through 10 Clock module Slot 1 CPU module Slot 11 DVG1 Generator module Slots 2 through 10 GP1 GPIB Interface module Slot 10 Power GPIB AGLI Clock Supply Module Module Module CPU AVG1 AWVG1 BG1 Module Module Module Module fe RE l ceU le B B Y o Ej C ES i i AN ml fR RL RL Fi AL AI A A 10 9 7 6 5 4 3 2 1 Figure C 1 TG 2000 Platform mainframe rear panel showing slot numbering C 2 AVG1 Analog Video Generator User Manual Appendix C Installation WARNING To avoid a shock hazard always remove the power cord before removing the top cover Failure to remove the power cord can result in serious injury or death 4 Refer to Figure C 2 and remove or loosen all screws to remove the top cover Top cover r Loosen screws 12 Top cover ee Remove Figure C 2 Top cover removal AVG1 Analog Video Generator User Manual C 3 Appendix C Installation 5 Remove the appropriate rear panel as shown in Figure C 3 Loosen but do not remove the bottom screw You will use it later
64. of Tables Table 1 1 Standard and Optional Accessories 00 Table 2 1 AVG1 Output Configurations ee sees Table 3 1 MMEMory commands Table 3 2 OUTPut Commands Table 3 3 SENSe Commands Table 3 4 SOURce Commands Table A 1 Electrical specifications Table A 2 Certifications and compliances eee00 Table B 1 SCPI Conformance Information Table C 1 Module slot assignments AVG1 Analog Video Generator User Manual 1 2 2 2 3 5 3 6 3 6 3 7 A 1 A 4 Table of Contents vi AVG1 Analog Video Generator User Manual a a General Safety Summary Injury Precautions Product Damage Precautions Symbols and Terms A A Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it Only qualified personnel should perform service procedures To avoid potential hazards use this product only as specified Avoid Electric Overload To avoid electric shock or fire hazard do not apply a voltage to a terminal that is outside the range specified for that terminal Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Terms in this Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUT
65. on have a question mark in parentheses in the command header section this indicates that the item can be both a command and a query Two MMEMory commands are listed here for your reference You can use these to set and query the output test signal for the module Detailed information for using these commands as well as other commands that can be used with the entire platform are located in the TG 2000 Signal Generation Platform User Manual Description Load a signal into a module and identify that signal as the active signal output signal for that module List the active signal output signal for a module AVG1 Analog Video Generator User Manual 3 5 Functional Command Groups Output Use these commands to select the output characteristics of the module Table 3 2 OUTPut Commands Command OUTPut CIRCle DIAMeter OUTPut CIRCle STATe OUTPut CIRCle POSition HORizontal OUTPut CIRCle POSition VERTical OUTPut CONFigure OUTPut SIGNal OUTPut STATe OUTPut TEXT DATA OUTPut TEXT POSition HORizontal OUTPut TEXT POSition VERTical OUTPut TEXT STATe OUTPut TRIGger TYPE OUTPut TRIGger CURSor STATe OUTPut TRIGger POSition HORizontal OUTPut TRIGger POSition HORizontal STEP OUTPut TRIGger POSition VERTical OUTPut TRIGger POSition VERTical STEP Sense Description Set or query circle diameter Set or query circle Set or query circle horizontal posi
66. onents on this module below when installing removing or handling modules 1 Wear a grounded antistatic wrist strap to discharge the static voltage from your body while installing or removing modules from the TG 2000 Platform mainframe Transport and store modules in a static protected bag or container Do not slide the module over any surface Handle modules as little as possible Do not touch module components or connector pins AY U Bin es ORD Do not use any devices capable of generating or holding a static charge in the work area where you remove install or handle modules 7 Avoid handling modules in areas that have a floor or work surface covering capable of generating a static charge 8 Do not remove the module circuit board assembly from the shield The shield provides important support and protection for the surface mount components AVG1 Analog Video Generator User Manual C 1 Appendix C Installation Module Installation A T 10 torx tip screwdriver is the only tool you need to install the module A T 10 torx tip is supplied with the module Hardware Installation To install the module into the TG 2000 Platform mainframe perform these steps 1 Set the TG 2000 Platform mainframe rear panel power switch to off 2 Unplug the power cord 3 Select the slot you will use to install the module Table 2 1 lists the slot restrictions Figure C 1 shows a sample configuration with slot numbers Table C 1 M
67. peak Measured with field square wave pedestal off lt 0 5 peak Measured with field square wave pedestal off lt 1 peak 0 5 lt 0 5 peak 1 1 within 0 5 with 2T5 pulse and bar signal lt 10mV lt 0 5 lt 0 5 0 5 Measured using 5 step ramp while varying APL 10 to 90 lt 0 1 lt 0 5 0 5 Typically lt 0 1 on hardware modulated signals and lt 0 2 on software modu lated signals In band Signal Noise Ratio S N B020000 and above H W version 2 2 and later Quiet Line Slot 9 or 10 Slots 2 8 Full Amplitude Ramp 71 dB to 6 MHz unweighted 73 dB to 6 MHz unweighted 75 dB typical HW modulated signals 77 dB typical SW modulated signals 63 dB to 6 MHz unweighted 65 dB typical In band Signal Noise Ratio S N B019999 and below H W version 2 1 and earlier Quiet Line Full Amplitude Ramp 67 dB to 6 MHz unweighted 60 dB to 6 MHz unweighted AVG1 Analog Video Generator User Manual Appendix A Specifications Table A 1 Electrical specifications cont Characteristics Out of band Signal Noise Ratio Out of band Signal Noise Ratio typical Crosstalk channel to channel Glitches synchronous noise Shallow ramp signal Shallow ramp signal typical Standard signal typical Pedestal Gate typical Return Loss Output Impedance Output Timing Offset Adjustment Range Trigger Output Amplitude Rise Time typical Output Impedance Trigger
68. ponse lt Boolean gt ON or 1 OFF or 0 1 0 OFF 200 Execution error None Command OUTP CIRC STAT 1 Query OUTP CIRC STAT Response 1 OUTPut CIRCle POSition VERTical OUTPut CIRCle POSition HORizontal AVG1 Analog Video Generator User Manual 3 13 OUTPut Commands OUTPut CONFigure Use this command to set or query the output signal connections Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands OUTPut CONFigure lt DEFault YC COMPosite gt OUTPut CONFigure Command lt enumeration gt DEFault 200 None Command Query Response None Query response DEFault DEF YC YC COMP COMP Execution error OUTP CONF YC OUTP CONF YC AVG1 Analog Video Generator User Manual OUTPut Commands OUTPut STATe Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the state of the module s output signal OUTPut STATe lt Boolean gt OUTPut STATe Command Query response lt Boolean gt ON or 1 OFF or 0 1 0 Not applicable 200 Execution error None Command OUTP STAT ON Query OUTP STAT Response 1 None AVG1 Analog Video Generator User Manual 3 15 OUTPut Commands OUTPut TEXT DATA Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use th
69. power switch Wait for the instrument to perform self tests 12 If you previously moved or removed a module and backed up the signal sets you can reinstall them now using the Signal Set Installation procedure If this module was installed in the TG 2000 Platform mainframe at the factory signal sets are already installed If you ordered this generator module separately you must install signal sets after installing the module If you have another AVGI Generator module already installed in the platform the new module you install can share its signal sets and you do not need to install them again To install signal sets use either of the two following procedures Installing Signals to the Default Destination or Installing Signals to a Non default Destination To replace signal sets refer to the TG 2000 Signal Generation Platform User Manual AVG1 Analog Video Generator User Manual Appendix C Installation Installing Signals to the Default Destination To install signal sets from the disk to the default destination perform these steps ee SV SN AIL ee ee ho De Insert the test signal disk into the TG 2000 Platform mainframe disk drive Push the DISK button Touch Add Signals when the Disk menu appears Touch Select Source Move the cursor to the DNL you want to load and push the Select button Select all of the signal sets at the module level and push the Select button Touch Quit Load The previous menu appears Touch Q
70. preferred when the lowest amount of differential phase and differential gain is required Hardware modulated signals use less memory than software modulated signals and signal parameter adjustments are more complete and responsive Chroma quantization makes differential phase and differential gain measure ments more difficult when using modulated ramp modulated 5 step and modulated 10 step signals To minimize this effect adjust the Chroma Gain Video Parameter to 102 0 Refer to page 2 11 Software modulated signals are preferred when three different signals are supplied by the module at one time PAL is not supported in this mode because of the 25 Hz offset Online Help Push the front panel HELP button to display a help window The help window describes the window you were using when you pushed HELP 2 2 AVG1 Analog Video Generator User Manual PSS Operating Procedures This section is organized into the following main topics m Power on the mainframe and select the module m Select an output signal Active signal parameters m Module parameters Refer to Figure 2 1 on page 2 1 for information on how to access the appropri ate windows for these procedures Equipment Hookup No special test equipment is necessary for these procedures but it will be helpful to view the signals on a monitor To do this connect the module s signal output to a television monitor using a 75 Q cable and a 75 Q termination AVG1 Analog Video
71. r User Manual 3 55 SOURce Commands SOURce MVIDeo SUBCarrier OFFSet STEP Use this command to set or query the UP DOWN step value of the subcarrier frequency change of an HW modulated composite video signal Units are degrees Syntax SOURce MVIDeo SUBCarrier OFFSet STEP lt numeric_value gt SOURce MVIDeo SUBCarrier OFFSet STEP Query response lt NR2 gt Parameters Command lt numeric_value gt lt NRf gt MIN MAX DEF Default Value 1 0 Errors and Events 200 Execution error Dependencies None Examples Command SOUR MVID SUBC OFFS STEP 100 Query SOUR MVID SUBC OFFS STEP Response 100 0000 Related Commands None 3 56 AVG1 Analog Video Generator User Manual SOURce Commands SOURce MVIDeo SYNC Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the sync pulse portion of the video signal Use this command to set the sync pulse amplitude on all channels at the same time Units are percent SOURce MVIDeo SYNC lt numeric_value gt SOURce MVIDeo S YNC Query response lt NR2 gt Command lt numeric_value gt lt NRf gt MIN MAX UP DOWN DEF 100 200 Execution error Amplitude on each channel is also affected by the related command Command SOUR MVID SYNC 50 Query SOUR MVID S YNC Response 50 0000 SOURce VIDeo03 S YNC AVGI1 Analog Video Generator User
72. s eiai cee teen eee 3 39 SOURce MVIDeo BURSt STEP 0 eee ce eee eee 3 40 SSOURCeIMVIDCO BY 2 cig eee ad tee ea eee ab E E G 3 41 sSOURce MVIDeo BY STEP 0 6 ce ete eee 3 42 SOURce MVIDeo CHRoma AMPLitude 0 0 0 cece eee eee 3 43 SOURce MVIDeo CHRoma AMPLitude STEP 0000005 3 44 SOURce MVIDeo CHRoma PHASe 2 0 0 6 eee eee eee 3 45 SOURce MVIDeo CHRoma PHASe STEP 0 22 000 e cece eee 3 46 SOURce MVIDeo LUMinance 21 ee eee eee 3 47 SOURce MVIDeo LUMinance STEP 1 0 2 0c c cee cece eee 3 48 SOURce MVIDeo PEDestal 0 0 cece eee 3 49 SOURce MVIDeo PEDestal STEP 2 0 6 cece eee 3 50 SOURCEIMVIDECO RY 2 vicars eee ene ER wed adeeb E E E 3 51 sSOURce MVIDeo RY STEP 2 6 cece 3 52 SOURce MVIDeo SCH PHASe 2 ee ee eee eee 3 53 SOURce MVIDeo SCH PHASe STEP 0 3 54 SOURce MVIDeo SUBCarrier OFFSet 2 0 0 ccc eee 3 55 SOURce MVIDeo SUBCarrier OFFSet STEP oona 00 c cece eee ee 3 56 SOURce MVIDeo SYNC uran en eea tennie a EE S 3 57 SOURce MVIDeo SYNC STEP sc 0 eee eee 3 58 SOURce MVIDeo TIMEbase 0 0 eee eee 3 59 SOURce MVIDeo TIMEbase STEP 2 2 2 0 eee cee eee 3 60 SOURce VIDeo3 AMPLitude 20 eee ee 3 61 SOURce VIDeo3 AMPLitude STEP 0 c cece cece eee eee 3 62 SOURce VIDeo3 AVIDEO oe cee i eee 3 63 ii AVG1 Analog Video Generator User Manual Table of Contents SOURce VIDeo3 AVIDeo ST
73. sync pulse amplitude Set or query sync pulse amplitude step size Set or query module time base Set or query module time base step size Set or query signal amplitude on channel 1 2 or 3 Set or query signal amplitude step size on channel 1 2 or 3 Set or query active video amplitude on channel 1 2 or 3 Set or query active video amplitude step size on channel 1 2 or 3 Set or query burst pulse amplitude on channel 1 2 or 3 3 7 3 8 Functional Command Groups Table 3 4 SOURce Commands cont Command SOURCce VIDeo3 BURSt STEP SOURCce VIDeo3 PEDestal SOURce VIDeo3 PEDestal STEP SOURCce VIDeo3 SYNC SOURCce VIDeo3 SYNC STEP Description Set or query burst pulse amplitude step size on channel 1 2 or 3 Set or query pedestal amplitude on channel 1 2 or 3 Set or query pedestal amplitude step size on channel 1 2 or 3 Set or query sync pulse amplitude on channel 1 2 or 3 Set or query sync pulse amplitude step size on channel 1 2 or 3 AVG1 Analog Video Generator User Manual OUTPut Commands This subsystem enables the actual output of the module the trigger output and the display of the circle overlay NOTE The module must be selected with the INSTrument subsystem before using these commands Command Tree OUTPut CIRCle DIAMeter POSition HORizontal VERTical STATe CONFigure STATe TEXT DATA POSition HORizontal VERTical STATe TRIGger CURSor STA
74. t Channels lt 0 5 at 700 mV amplitude Absolute self calibrated after warm up and outputs terminated in 75 Q Component Channel to Channel Gain Match lt 0 5 at 700 mV amplitude Relative to channel 1 Chroma Luma Gain Error lt 0 5 at 700 mV amplitude Relative to 100 kHz Pedestal Amplitude Error lt 1 at 1 V amplitude Y C Composite Mode Gain Match Y Level Accuracy 1 at 700 mV amplitude Y C Match 2 at 700 mV amplitude Delay Errors Chroma Luma Delay typical lt 2 5 ns on a composite output Channel to Channel Delay lt 1 ns Channels 2 and 3 relative to channel 1 Group Delay typical lt 3 ns to 6 MHz SCH Phase Error typical lt 1 25 ns 1 6 at 3 58 MHz and 2 at 4 43 MHz AVG1 Analog Video Generator User Manual A 1 Appendix A Specifications A 2 Table A 1 Electrical specifications cont Characteristics Frequency Response Short Time Distortion Line Time Distortion Field Time Distortion 2T5 Pulse Ringing 2T5 Pulse Ringing typical K Factor 2T5 Pulse Pulse Bar Ratio typical DC Offset Luminance Linearity Error Chroma Luminance Intermodulation Dynamic Gain Error 10 to 90 APL Differential Gain Hardware Modulated Signals Software Modulated Signals typical Differential Phase Description Flat within 0 5 peak from 0 1 MHz to 6 MHz at 700 mV amplitude Typically lt 0 1 to 6 MHz and lt 5 to 8 MHz at 700 mV amplitude lt 1 peak Measured with 2T bar 0 5
75. ters window appears as shown below NTSc 1 Color Bars75 Calor Bars AVG1 Analog Video Generator User Manual 2 7 Operating Procedures Signal Information 2 8 You can view detailed information about the active signal 1 Inthe Active Signal Parameters window shown on page 2 7 touch Signal Information 2 View the signal information as shown in the following illustration NTSC 1 Color Bar 75 Calor Bars AVG1 Analog Video Generator User Manual Operating Procedures Text Overlay You can enter text that overlays your displayed test signal When turning text on or off you are turning text on or off for all test signals that have overlaid text Touching Reset returns the text horizontal and vertical to previously saved values To enter and position text follow these steps 1 Inthe Active Signal Parameters window shown on page 2 7 touch Text Overlay to enter the Signal Text window The Signal Text window is shown in the following illustration lor 1j 75 Bars No Setup 2 Touch Edit Text to enter the text entry window as shown in the following illustration AVG1 Analog Video Generator User Manual 2 9 Operating Procedures 3 Enter text as follows a Touch the desired letters on the display b Touch Return if you want to enter a new line c Touch the list box at the top of the window to see all the text entered d Touch OK when text entry is complete The Signal Text Overlay menu retur
76. tion Set or query circle vertical position Set or query module configuration Set or query output signal Set or query module output Set or query current text string Set or query text horizontal position Set or query text vertical position Set or query text Set or query trigger mode Set or query trigger cursor Set or query trigger horizontal position Set or query horizontal position step size Set or query trigger vertical position Set or query vertical position step size Use these commands to adjust the signal timing Table 3 3 SENSe Commands Command SENSe CORRection MDELay HORizontal SENSe CORRection MDELay HORizontal STEP SENSe CORRection MDELay VERTical SENSe CORRection MDELay VERTical STEP 3 6 Description Set or query horizontal time delay Set or query horizontal step size Set or query vertical time delay Set or query vertical step size AVG1 Analog Video Generator User Manual Functional Command Groups Source Use these commands to define the signal parameters for the module Table 3 4 SOURce Commands Command SOURce MVIDeo AMPLitude SOURce MVIDeo AMPLitude STEP SOURce MVIDeo AVIDeo SOURce MVIDeo AVIDeo STEP SOURce MVIDeo BURSt SOURce MVIDeo BURSt STEP SOURce MVIDeo BY SOURce MVIDeo BY STEP SOURce MVIDeo CHRoma AMPLitude SOURce MVIDeo CHRoma AMPLitude STEP SOURce MVIDeo CHRoma PHASe SOURce MVIDeo CHRoma PHASe STEP SOURce MVID
77. tion error None Command SOUR VID BURS STEP 5 Query SOUR VID BURS STEP Response 5 0000 None AVG1 Analog Video Generator User Manual SOURce Commands SOURce VIDeo3 PEDestal Syntax Parameters Default Value Errors and Events Dependencies Examples Related Commands Use this command to set or query the amplitude of the pedestal portion of the video signal on the specified channel The 3 the command represents the channel You can specify channel 1 2 or 3 If you do not specify a channel the command the instrument assumes channel 1 This command controls the pedestal amplitude for each channel separately when applicable Units are millivolts SOURce VIDeo3 PEDestal lt numeric_value gt SOURce VIDeo3 PEDestal Command Query response lt numeric_value gt lt NRf gt lt NR2 gt MIN MAX UP DOWN DEF 200 Execution error Amplitude is also affected by the affected command Command SOUR VID1 PED 5 Query SOUR VID1 PED Response 5 0000 SOURce MVIDeo PEDestal AVG1 Analog Video Generator User Manual 3 67 SOURce Commands SOURce VIDeo3 PEDestal STEP Use this command to set or query the UP DOWN step value of the amplitude of the pedestal portion of the video signal on the specified channel The 3 the command represents the channel You can specify channel 1 2 or 3 If you do not specify a channel the command the instrument assumes channel 1 Units ar
78. tment or name if known P O Box 500 Beaverton OR 97077 USA www tektronix com AVG1 Analog Video Generator User Manual FEE RES Getting Started E Getting Started The AVG1 Analog Video Generator module is designed to be installed in the TG 2000 Signal Generation Platform The module is a high accuracy multiformat analog video test signal generator The signal generation architecture is 12 bit 27 MHz component with digital modulation for composite signals This ensures high accuracy distortion free signals within a 6 MHz video bandwidth This module provides three channel outputs and one trigger output The trigger output can be used to trigger other video equipment or an oscilloscope The module can generate signals in these component and composite formats m NTSC m SECAM m PAL GBR m PAL D m YC plus composite m PAL M m Y B Y and R Y m PAL N You can create other formats with the SDP2000 program However the output reconstruction filters are optimized for a 27 MHz sampling frequency To adjust the amplitude or time base offset parameters follow the procedure for Video Parameters on page 2 11 Several amplitude parameters of the signal can be adjusted such as luminance amplitude and chrominance gain The underlying time base used to generate signals can also be adjusted When this parameter is adjusted it adjusts every component of the active video signal such as line length subcarrier frequency if applic
79. to be installed Be sure to choose a destination that is one level above the source Push the Select button 11 Touch Start Load A popup menu tells you when the transfer is complete AVG1 Analog Video Generator User Manual Appendix C Installation Configure Video Outputs This module has three channel outputs on the rear panel When you configure the three output channels it only affects hardware modulated composite signals To configure the channels select one of the following m Signal Specified permits the SDP2000 to configure the channel outputs m Y C Composite specifies that Ch 1 outputs Y Ch 2 outputs C and Ch 3 outputs a composite signal Composite all Channels specifies a composite signal on all three outputs Signal Specified Signal Specified AVG1 Analog Video Generator User Manual C 9 Appendix C Installation Signal Backup and Module Removal Required Equipment Signal Backup Module Removal Before removing a generator module you should save the signal sets to a disk The AVG1 Generator module will lose its signal memory 30 seconds after you remove it from the platform You will need a blank DOS formatted 3 5 inch disk Save the signal sets as follows 1 Insert a DOS formatted disk into the platform s disk drive 2 Push the Disk button and touch Save Signals to Disk 3 Touch Select Source and select the AVG1 Use the cursor arrows to select the AVG1 module in the signals colum
80. uccessful push the Module button Check the display for the icon that represents the module you are inspecting If the module does not appear refer to Troubleshooting in the AVGI Analog Video Generator Service Manual If your module was ordered separately and you installed it in the platform and you do not have another AVG1 Generator module already installed in the platform install signal sets using the procedures on page C 6 Wait 20 minutes for the instrument to warm up at nominal ambient temperature Signal amplitude and DC offset may vary slightly over a range of temperatures Perform self calibration as follows a Terminate the three rear panel signal outputs b Push the Utilities button and then touch Module Self Cal NOTE The original calibration file will be replaced by the new one c Touch the Self Cal icon for the module you are testing d Touch Start Cal The Self Cal takes 2 to 5 minutes depending on the module An error message indicates a failed calibration If the Self Cal fails contact your Tektronix Representative for assistance e When the Self Cal is successful proceed to step 7 Select a signal set and output signal that are compatible with your monitor A composite signal is preferred because it tests more of the module s hardware Connect the rear panel Output 1 connector to the television monitor s input Configure the channel outputs for composite as follows a Push the Test Signals fro
81. uit Load again The Add Signals window reappears showing the module as the selected destination NOTE The Add Signals window shows the amount of Kbytes selected Total Tagged and the amount available on the module If the tagged total is greater than the amount available the signal set will not load 9 Touch Start Load The signal sets are automatically loaded into the module A popup menu tells you when the transfer is complete Installing Signals to a Non default Destination To install signal sets from the floppy disk to a non default destination perform these steps 1 2 3 4 5 6 7 8 Insert the test signal disk into the TG 2000 Platform mainframe disk drive Push the DISK button Touch Add Signals when the Disk menu appears Touch Select Source Move the cursor to the DNL you want to load and push the Select button Move the browse ring to a particular test signal and push the Select button Touch Quit Load The previous menu appears Touch Quit Load again The Add Signals window reappears AVG1 Analog Video Generator User Manual C 7 Appendix C Installation C 8 NOTE The Add Signals window shows the amount of Kbytes selected Total Tagged and the amount available on the module If the tagged total is greater than the amount available the signal set will not load 9 Touch Select Destination 10 Move the cursor to the signal s field and place the cursor where you want the test signal

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