Chapter 14:
Test/Alignment Procedures - Video
Calibration: NTSC
Before starting, ensure that a valid NTSC reference is connected to Genlock In of the
unit, and that the unit is in 525-line mode (select Line Standard from the System
Config menu, and switch if necessary). Also ensure that VITS/Blanking (under One-
Time Video Setup in the System Config menu) is set to Narrow for both fields.
Component Output Level
1. Select FULL FIELD BARS as the test pattern and activate the unit’s Test Signal
Generator.
2. Adjust ARV2 for 1.00Vpp on CAV Y OUT (or 714mV white-to-blanking).
3. Adjust BRV1 (B-Y) and BRV2 (R-Y) for 700mVpp on B-Y OUT and R-Y OUT
respectively (or to get dots in their boxes on the component vectorscope).
Composite Output Level
1. Adjust Chroma ARV3 to get vectors dots in their vectorscope boxes on
Composite Out.
2. Switch the test pattern to LUMA SWEEP 5.5MHz, and adjust ARV1 for flattest
frequency response.
3. Switch back to FULL FIELD BARS, and verify that S-Video-Y OUT is 1.00Vpp
on the Multi I/O Breakout Cable.
4. Verify that S-Video-C OUT on the Multi I/O Breakout Cable has 286mVp-p
Burst, and that the vector dots are in their boxes on the NTSC vectorscope.
RGB Output Level
1. Adjust DRV1 for 286mV sync level on the GREEN Output, and then adjust
DRV3 for 714mV White-to-Blanking on the GREEN Output.
2. Adjust DRV4 for 714mV White-to-Blanking on the RED Output.
3. Adjust DRV5 for 714mV White-to-Blanking on the BLUE Output.
4. Adjust DRV2 for 1.00Vp-p on Composite/AUX SYNC Output.
SDI Output Check
1. Verify both SDI outputs on the serial digital component monitor. Observe the
display in parade, vector and lightening modes.
2. Select the EYE function on the WFM601 monitor at 10Hz CLOCK BW. Select
CONFIG-EYE PATTERN-CLOCK BW-10HZ.
3. The EYE amplitude should be approximately 740mVpp, and the line jitter should
not exceed 560pS at the 10Hz Clock Bandwidth.
4. Select the SHALLOW RAMP test pattern in the unit.
5. Connect the cable clone box between the SDI OUT and the WFM601 input.
Select 250M and run the EDH DET test for 2 minutes. (Press RESET on the
WFM601 to start the timer).
6. Repeat step 5 for SDI OUT-2.
7. Repeat step 5 for SDI Reclocked.
105
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