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Glossary

Glossary- 2

AWVG1 Wideband Video Generator User Manual

Luminance

The signal that 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 + 0.59G + 0.11B) of the
R, G, and B signals.

Modulated

Implies that chrominance information is present in a television signal. (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.

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).

SCPI

Standard Commands for Programmable Instruments. 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 group of signals.

Temporal

Of or relating to time, as distinguished from space.

Termination

The impedance at the end of a transmission line that that matches the
impedance of the source and of the line itself. Signal amplitude errors and
reflections will result if appropriate termination is not applied. Since video is
a 75

Ω

system, a 75

Ω

terminator must be placed at the end of the signal

path.

Y

Abbreviation for luminance.

Zone Plate Signal

A signal composed of vertical and/or horizontal patterns that may be
dynamic (temporally changing or swept in frequency). Used for testing
complex processing technologies.

Содержание AWVG1

Страница 1: ...User Manual AWVG1 Wideband Video Generator 070 9051 02 This document applies to firmware version 2 0 and above www tektronix com...

Страница 2: ...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 50...

Страница 3: ...tions 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...

Страница 4: ...you may purchase up to five years of Calibration Services Service Assurance Advantages H Priced well below the cost of a single repair or calibration H Avoid delays for service by eliminating the nee...

Страница 5: ...t Hookup 2 3 Power On and Select the Module 2 4 Output Signal 2 5 Enable Disable the Module Output 2 5 Select the Output Signal 2 6 Active Signal Parameters 2 9 Video Parameters 2 11 Zone Plate Test S...

Страница 6: ...SOURce ZONE KXT 3 30 SOURce ZONE KXY 3 31 SOURce ZONE KY 3 32 SOURce ZONE KY2 3 33 SOURce ZONE KYT 3 34 SOURce ZONE KT 3 35 SOURce ZONE KT2 3 36 SOURce ZONE TRESet STATe 3 37 Appendices Appendix A Sp...

Страница 7: ...Contents AWVG1 Wideband Video Generator User Manual iii Hardware Installation D 2 Signal Set Installation D 6 Signal Backup and Module Removal D 8 Required Equipment D 8 Module Removal D 8 Glossary a...

Страница 8: ...subsystem hierarchy 3 3 Figure C 1 Optical zone plates enlarged C 1 Figure C 2 Zone plate parameters window C 3 Figure C 3 A KX only zone plate C 4 Figure C 4 A KX2 only zone plate C 5 Figure C 5 A KY...

Страница 9: ...EMory commands 3 5 Table 3 2 OUTPut commands 3 5 Table 3 3 SENSe commands 3 6 Table 3 4 SOURce commands 3 6 Table A 1 AWVG1 Generator module outputs A 1 Table A 2 AWVG1 Generator module switcher input...

Страница 10: ...Table of Contents vi AWVG1 Wideband Video Generator User Manual...

Страница 11: ...To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded...

Страница 12: ...uct The following symbols may appear on the product Protective Ground Earth Terminal ATTENTION Refer to Manual Double Insulated DANGER High Voltage Refer to the specifications section for a listing of...

Страница 13: ...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...

Страница 14: ...Service Safety Summary x AWVG1 Wideband Video Generator User Manual...

Страница 15: ...s Related Manuals The following documents are also available H The AWVG1 Wideband Video Generator Service Manual describes how to service the module This optional manual must be ordered separately H T...

Страница 16: ...merica contact your local Tektronix distributor or sales office Service support Tektronix offers a range of services including Extended Warranty Repair and Calibration services Contact your local Tekt...

Страница 17: ...Getting Started...

Страница 18: ......

Страница 19: ...put Burst Generator Figure 1 1 Simplified block diagram of the AWVG1 Generator module The module is a single channel generator which outputs either the internally generated signal or an analog video s...

Страница 20: ...stop frequencies is provided Accessories Table lists standard and optional accessories for the module Standard accessories are included with the module and optional accessories are available for purc...

Страница 21: ...to the Output 1 BNC connector on the AWVG1 Generator module rear panel and terminate the monitor s loop through connector in 75 5 Terminate the AWVG1 Generator module outputs 2 and 3 in 75 This is ne...

Страница 22: ...signal and check that the displayed signal changes You only need to do this on Output 1 14 Check the AWVG1 External Input as follows a Using a 75 coaxial cable connect a television test signal from a...

Страница 23: ...Operating Basics...

Страница 24: ......

Страница 25: ...ton Touch Module Parameters Touch Active Signal Parameters Test Signals window Touch AWVG1 module Touch Module Parameters Touch Rename Module Rename Module window Enter new name for module Push Edit b...

Страница 26: ...odule such as the AVG1 Generator module as the output signal for the AWVG1 Generator module To do this you must select External Input as the AWVG1 Generator module output signal For information on how...

Страница 27: ...H Active signal parameters H 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...

Страница 28: ...stalled module is not represented refer to Troubleshooting in the AWVG1 Wideband Video Generator Service Manual NOTE When the platform is shipped from the factory the module is named AWVG1 X where X r...

Страница 29: ...n 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 D 6 2 Touch the desired signal set on...

Страница 30: ...as shown in the following example _Horizontal Sine is a user generated signal c To select a signal from the list rotate the Navigation knob to move the cursor to that signal and then press the front p...

Страница 31: ...the module and signal and then push the Select button 7 If you want to use the signal on the rear panel input as the output signal touch the EXTERNAL INPUT icon to highlight it For example you can co...

Страница 32: ...w 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 AWVG1 Generator module follow these steps 1...

Страница 33: ...r User Manual 2 9 You can view detailed information about the selected signal 1 In the Active Signal Parameters window shown on page 2 8 touch Signal Information 2 View the signal information as shown...

Страница 34: ...g steps 1 Push the Test Signals button In the Test Signals window select the 1 30 MHz Adjustable Line Sweep signal This signal has five frequency markers that you can adjust 2 Touch Active Signal Para...

Страница 35: ...e frequency Touch the Marker X icon X represents the number of the currently selected marker to enable or disable the marker NOTE When two or more markers overlap only one marker will appear on the wa...

Страница 36: ...layed name using the backspace key BS 12 Enter the new name Touch Set 1 or Set 2 to display additional sets of characters Touch Shift to display a lower case or upper case alphabet In the following ex...

Страница 37: ...ne zone plate signals using the SDP2000 Signal Development Program Version 2 0 and up Refer to the SDP2000 online help To change the zone plate coefficients perform the following steps 1 Push the Test...

Страница 38: ...e the cursor down to KX H freq Rotate the Navigation knob A popup menu will warn you that the Pattern Control Parameter will become invalid This means that the signal will change shape Touch OK to con...

Страница 39: ...signal again Go back to the zone plate Parameters window and note that the Circle Frequency reappears with the five dependent parameters g Go back to the Test Signals window and select a different zo...

Страница 40: ...fect the entire module To enter the Module Parameters window for the AWVG1 Generator module follow these steps 1 Select the module if not already selected 2 Push the Test Signals button 3 Touch Module...

Страница 41: ...tor module using the Module Parameters window Changes you make to timing affect all signals for the AWVG1 Generator module To set the timing perform the following steps 1 In the Module Parameters wind...

Страница 42: ...the display b Rotate the Navigation knob counter clockwise to advance the timing or clockwise to delay the timing c To enter a specific value use the keypad and then press the Select key NOTE When yo...

Страница 43: ...Syntax and Commands...

Страница 44: ......

Страница 45: ...several modules and will be accepted without a reported error 2 Enable the module using the OUTPut STATe ON command The output state of the module must be enabled before test signal parameters can be...

Страница 46: ...X parameter horizontal frequency to 5 98 cycles per active picture height c aph 4 SOURce ZONE KX2 8 5 sets the zone plate KX 2 parameter horizontal sweep to 8 5 cycles per active picture height square...

Страница 47: ...e 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...

Страница 48: ...Syntax 3 4 AWVG1 Wideband Video Generator User Manual...

Страница 49: ...st 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 Ma...

Страница 50: ...Set or query the frequency of the sweep end point SOURce SWEep MARKer5 FREQuency Set or query the frequency of frequency markers 1 through 5 SOURce SWEep MARKer5 STATe Set or query the state of frequ...

Страница 51: ...stem commands may release resources controlled by the signal manager or the clock manager NOTE The module must be selected with the INSTrument subsystem prior to using these commands For more informat...

Страница 52: ...set or query the state of the AWVG1 Generator module OUTPut STATe Boolean OUTPut STATe Command Query response Boolean ON or 1 OFF or 0 1 0 ON None None Command OUTP STAT ON Query OUTP STAT Response O...

Страница 53: ...ponse char EXTernal INTernal EXT INT None None None Command OUTP SOUR INT Query OUTP SOUR Response INT OUTPut STATe MMEM LOAD SIGNal The MMEM LOAD SIGNal command loads a signal to the module output si...

Страница 54: ...OUTPut Subsystem 3 10 AWVG1 Wideband Video Generator User Manual...

Страница 55: ...f the module in relation to the rest of the TG 2000 Signal Generation Platform by correcting the module delay The BG1 Generator module is the reference A detailed description of the AWVG SENSe command...

Страница 56: ...a floating point value Fractional parts are ignored Settings will be retained through power cycle SENSe CORRection MDELay VERTical numeric_value SENSe CORRection MDELay VERTical Command Query response...

Страница 57: ...the horizontal time value adjust the vertical delay to accommodate the requested delay Settings will be retained through the power cycle SENSe CORRection MDELay HORizontal numeric_value SENSe CORRecti...

Страница 58: ...SENSe Subsystem 3 14 AWVG1 Wideband Video Generator User Manual...

Страница 59: ...cription of the AWVG1 Generator module SOURce commands follows the Command Tree Command Tree SOURce MVIDeo SYNC numeric_value BURSt numeric_value SWEep AMPLitude numeric_value FREQuency STARt numeric_...

Страница 60: ...has only two values 0 00 and 100 0 percent Arguments greater than 0 00 will be adjusted to 100 0 Units are percent SOURce MVIDeo SYNC numeric_value SOURce MVIDeo SYNC Command Query response numeric_v...

Страница 61: ...t level has only two values 0 00 and 100 0 percent Arguments greater than 0 00 will be adjusted to 100 0 SOURce MVIDeo BURSt numeric_value SOURce MVIDeo BURSt Command Query response numeric_value NRf...

Страница 62: ...illivolts SOURce MVIDeo SWEep AMPLitude numeric_value SOURce MVIDeo SWEep AMPLitude Command Query response numeric_value NRf NR2 714 3 None The default value is based on the source file of the active...

Страница 63: ...of the sweep start point Units are megahertz SOURce SWEep FREQuency STARt numeric_value SOURce SWEep FREQuency STARt Command Query response numeric_value NRf NR2 0 0 None None Command SOUR SWE FREQ ST...

Страница 64: ...of the sweep end point Units are megahertz SOURce SWEep FREQuency STOP numeric_value SOURce SWEep FREQuency STOP Command Query response numeric_value NRf NR2 10 00 None None Command SOUR SWE FREQ STOP...

Страница 65: ...or query the frequency of frequency markers 1 through 5 Units are megahertz SOURce SWEep MARKer5 FREQuency numeric_value SOURce SWEEP MARKer5 FREQuency Command Query response numeric_value NRf NR2 0 0...

Страница 66: ...f frequency markers 1 through 5 You can use the query to determine the state of frequency markers 1 through 5 SOURce SWEep MARKer5 STATe Boolean SOURce SWEEP MARKer5 STATe Command Query response Boole...

Страница 67: ...are megahertz For other zone plate signals the units are c aph cycles per average picture height SOURce ZONE FREQuency numeric_value SOURce ZONE FREQuency Command Query response numeric_value NRf NR2...

Страница 68: ...umeric_value NRf NR2 Not applicable None The results of this command are based on the type of zone plate originally defined Other K factors will automatically be adjusted with this command If the depe...

Страница 69: ...ery the zone plate K parameter Units are cycles SOURce ZONE K numeric_value SOURce ZONE K Command Query response numeric_value NRf NR2 Not applicable None None Command SOUR ZONE K 0 4 Query SOUR ZONE...

Страница 70: ...er Units are c aph cycles per average picture height SOURce ZONE KX numeric_value SOURce ZONE KX Command Query response numeric_value NRf NR2 Not applicable None None Command SOUR ZONE PAR KX 98 6 Que...

Страница 71: ...nits are c aph2 cycles per active picture height squared SOURce ZONE KX2 numeric_value SOURce ZONE KX2 Command Query response numeric_value NRf NR2 Not applicable None None Command SOUR ZONE PAR KX2 4...

Страница 72: ...are c aph s cycles per active picture height per second SOURce ZONE KXT numeric_value SOURce ZONE KXT Command Query response numeric_value NRf NR2 Not applicable None None Command SOUR ZONE PAR KXT 0...

Страница 73: ...er Units are c aph2 cycles per active picture height squared SOURce ZONE KXY numeric_value SOURce ZONE KXY Command Query response numeric_value NRf NR2 Not applicable None None Command SOUR ZONE PAR K...

Страница 74: ...rameter Units are c aph cycles per average picture height SOURce ZONE KY numeric_value SOURce ZONE KY Command Query response numeric_value NRf NR2 Not applicable None None Command SOUR ZONE KY 75 Quer...

Страница 75: ...er Units are c aph2 cycles per active picture height squared SOURce ZONE KY2 numeric_value SOURce ZONE KY2 Command Query response numeric_value NRf NR2 Not applicable None None Command SOUR ZONE KY2 3...

Страница 76: ...its are c aph s cycles per active picture height per second SOURce ZONE KYT numeric_value SOURce ZONE KYT Command Query response numeric_value NRf NR2 Not applicable None None Command SOUR ZONE KYT 0...

Страница 77: ...ameter Units are c s cycles per second SOURce ZONE KT numeric_value SOURce ZONE KT Command Query response numeric_value NRf NR2 Not applicable None None Command SOUR ZONE KT 0 1 Query SOUR ZONE KT Res...

Страница 78: ...Units are c s2 cycles per second squared SOURce ZONE KT2 numeric_value SOURce ZONE KT2 Command Query response numeric_value NRf NR2 Not applicable None None Command SOUR ZONE KT2 0 24 Query SOUR ZONE...

Страница 79: ...the zone plate signal SOURce ZONE TRESet STATe Boolean SOURce ZONE TRESet STATe Command Query response Boolean NRf NR2 Not applicable None None Command SOUR ZONE TRES STAT ON Query SOUR ZONE TRES STAT...

Страница 80: ...SOURce Subsystem 3 36 AWVG1 Wideband Video Generator User Manual...

Страница 81: ...Appendices...

Страница 82: ......

Страница 83: ...3 relative to output 1 Relative Amplitude 0 5 outputs 2 and 3 relative to output 1 Delay Errors typical Output to Output Delay 1 ns outputs 1 and 3 relative to output 2 Group Delay 3 ns to 20 MHz 5 ns...

Страница 84: ...t 10 mV output 1 relative to input Luminance Linearity Error 0 5 Differential Gain 0 5 Differential Phase 0 5_ In band Signal Noise Ratio 60 dB to 6 MHz unweighted as measured on the VM700 No spurs ab...

Страница 85: ...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 products...

Страница 86: ...Appendix A Specification A 4 AWVG1 Wideband Video Generator User Manual...

Страница 87: ...the SCPI 1994 0 Standard For information on other command groups that this module may support refer to the TG 2000 Signal Generation Platform User Manual Table B 1 SCPI 1994 0 conformance information...

Страница 88: ...Appendix B SCPI Conformance Information B 2 AWVG1 Wideband Video Generator User Manual...

Страница 89: ...hows two enlarged optical zone plates The white areas are transparent and the black areas are opaque The precise spacing of the rings focuses and intensifies light that passes through the plate Figure...

Страница 90: ...he adjustment range of most of the coefficients depends on the characteristics sample frequency and lines per field of the active video standard TG 200 display Circle Frequency Diag Frequency Horz Fre...

Страница 91: ...ve video standard For example KX 9 0 results in approximately 12 cycles per line in a standard with a 4 3 aspect ratio the same setting yields about 16 cycles per line when the ratio is 16 9 To estima...

Страница 92: ...g KX 2 to 9 will result in the line waveform changing from DC to 9 c aph in the width equal to one active picture height As with KX the ending frequency depends on the aspect ratio of the active video...

Страница 93: ...vertically arranged sweep signal The Field Sweep zone plate signal is a KXY only zone plate TG 2000 display KY V Freq Units c aph KY sets the initial vertical frequency of the pattern it is analogous...

Страница 94: ...s to KX 2 as KY compares to KX To see the effect of KY 2 view the field on a waveform monitor With KY set to 0 0 a KY 2 coefficient of 10 results in the apparent vertical sine wave changing from DC to...

Страница 95: ...e of the signal will then flip by 180 the sine wave will become negative and the frequency will increase through DC when the cycle will begin again TG 2000 display KYT T ch V freq Units c aph s The KY...

Страница 96: ...enerated with equal coefficients for KX and KY In this special case the diagonal frequency is 2 times the vertical and horizontal frequencies The Circle is probably the best known zone plate pattern s...

Страница 97: ...le 72 0 MHz 2 36 0 MHz For horizontal sweep frequencies up to half of the video standard s sampling frequency fs the displayed value is the maximum or swept to frequency of the sine wave For numbers g...

Страница 98: ...Appendix C Zone Plates C 10 AWVG1 Wideband Video Generator User Manual...

Страница 99: ...re 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...

Страница 100: ......

Страница 101: ...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 2 Transport and store modules in a stat...

Страница 102: ...slot restrictions Figure D 1 shows a sample configuration with slot numbers Table D 1 Module slot assignments Module Slots in which the module can be installed AGL1 Genlock module Slot 2 or 3 AVG1 Gen...

Страница 103: ...azard 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 D 2 and remove or loosen all screws to remove...

Страница 104: ...in Figure D 3 Loosen but do not remove the bottom screw You will use it later to secure the module Loosen screw Figure D 3 Rear panel removal 6 While ensuring correct alignment of the module flange a...

Страница 105: ...ting the module CAUTION The connectors must exactly match before you attempt to press the module firmly in place If the connectors do not match you could bend a pin that could damage the module mainfr...

Страница 106: ...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...

Страница 107: ...d 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 S...

Страница 108: ...ve 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...

Страница 109: ...top screw 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 t...

Страница 110: ...Appendix D Installation D 10 AWVG1 Wideband Video Generator User Manual...

Страница 111: ...Glossary and Index...

Страница 112: ......

Страница 113: ...olor information in a television picture Chrominance can be further broken down into two properties of color hue and saturation Chrominance Signal The high frequency portion of the video signal obtain...

Страница 114: ...ng luminance Y from the red camera signal R SCPI Standard Commands for Programmable Instruments A standard that provides guidelines for remote programming of instruments These guidelines provide a con...

Страница 115: ...rating procedures 2 3 Output signal enable disable 3 8 select 2 5 source 3 9 Output signal enable 2 17 Outputs 2 2 P Pattern control parameter C 2 Power on procedure 2 4 R Rear panel connectors 2 2 Re...

Страница 116: ...Module parameters 2 16 Modules 2 4 Signal information 2 9 Signal sets 2 5 Test signals 2 5 2 6 Timing 2 17 Video parameters 2 10 Zoneplate 2 14 Z Zone plate amplitude 3 24 circle C 8 C 9 combining par...

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