
802BT/802R Video Test Generator User Guide
133
Analyzing pseudo-random noise in a cable or distribution
system
The following example uses commands to test a connected HDMI/DVI cable or distribution
system.
To analyze pseudo-random noise in a cable or distribution system:
1. Connect the DVI or HDMI cable between the transmit and receive connectors on the
generator.
If you are testing a distribution system connect an access cable to the distribution
center to the transmit connector on the generator and a second access cable to the
receive connector on the generator.
2. Using a terminal emulator, establish a terminal connection with the generator. Refer to
“
Setting up a terminal connection with the generator
” on page 14.
3. Enter the following commands to configure the generator to output a digital signal
(HDMI or DVI):
SROP
2 4
This removes analog friendly mode and configures the generator to output either a DVI
or HDMI signal depending on the interface hardware the generator is equipped with
(DVI or HDMI).
4. (optional) Enter the following commands to set the status display mode:
SROP 8
5. Enter the following commands to analyze pseudo-random noise in a cable or
distribution system.
FMTL
TEST165 // loads the TEST165 format for testing DVI
Note: For HDMI testing load the TEST81 format.
FMTU
// applies the TEST165 or TEST81 format to the generator
6. Enter the following commands to configure the pseudo-random noise parameters.
PNSF
0
// selects internal timing source for pseudo-random noise
PNST
1
// specifies QDI-BCM algorithm
PNSA
1
// sets pseudo random noise to be calculated each pixel
PNSM
0
// sets pseudo random noise test to run in auto mode
PNSP
100
// sets pseudo-random noise for 100 “multi-shots”
PNAU
// loads the generator with pseudo-random noise settings
Note: The test will stop automatically if configured to run in the single or multi-shot
mode. If you initiate the test in the continuous mode, you will have to enter a carriage
return to halt the test after PNAU is invoked.
7. Enter the following commands to view the results of the test.
Содержание 802BT
Страница 1: ...802BT 802R Video Test Generator User Guide ...
Страница 52: ...42 Chapter 2 Testing Video Displays ...
Страница 62: ...52 Chapter 3 Administrative Tasks ...
Страница 87: ...802BT 802R Video Test Generator User Guide 77 IMGE end an editing session IMGA MyImage save image as MyImage ...
Страница 118: ...108 Chapter 7 Using GPIB Interface ...
Страница 194: ...184 Chapter 10 Testing EDID ...
Страница 204: ...194 Chapter 11 Testing HDCP ...
Страница 213: ...Video Test Generator User Guide 203 A Command Reference Topics in this appendix Commands by name ...
Страница 214: ...204 Appendix A Command Reference Commands by name ...
Страница 303: ...Video Test Generator User Guide 293 Example 7 Turn audio off DPTG 3 DPGU Example 8 Turn audio on DPTG 7 DPGU ...
Страница 595: ...Video Test Generator User Guide 585 ...
Страница 608: ...598 Appendix A Command Reference Related commands YMDO UNPK PKUP VTOF FLSH Example YMDI YMODEM BATCH upload ...
Страница 611: ...Video Test Generator User Guide 601 ...
Страница 612: ...602 Appendix A Command Reference ...
Страница 613: ...802BT 802R Video Test Generator User Guide 603 B Image Reference Topics in this appendix Standard image descriptions ...
Страница 716: ...706 Appendix B Image Reference ...
Страница 744: ...734 Appendix C Error Messages ...