DigiDuplex
1. Check MU3-3, MU3-4, and MU3-5 for valid clock signals on scope.
Composite Input Level
1. Turn off the unit’s Test Signal Generator. Select the COLOR BARS test pattern
in the external test signal generator, and set the unit to Process Mode (the unit is
in Process Mode when the light on the Bypass front-panel button is not flashing;
if the Bypass indicator is flashing, press the Bypass button to return to Process
Mode). Set the proc amp settings to unity for all input modes. This can be done
easily by pressing the Memory front-panel button three times in succession.
2. From the menus, select the Factory Calibration sub-menu from the System
Config menu. Press enter to confirm that you wish to enter the Factory
Calibration sub-menu. From here, change Calibration Mode to ON. This will
turn digital clamp tracking OFF. Press Exit to return to the Factory Calibration
sub-menu.
3. While still in the Factory Calibration sub-menu, select the Blk-Cal Comp 525
option and press Enter. Turning the control knob automatically selects the
Composite input.
4. Adjust the front panel control knob for 0 Setup, while at the same time adjusting
IRV1 for 714mV White-to-Blanking on the output monitor. Press Exit to store
the new setting.
Component Input Level
1. With Calibration Mode still ON, from the menu select Blk-Cal CAV 525 and
press Enter. Turn the control knob to automatically select CAV input. Adjust the
front panel control knob for 0 Setup, while at the same time adjusting IRV2 for
714mV White-to-Blanking on the output monitor.
2. Switch the test pattern to LUMA SWEEP, and adjust JRV1 for flattest frequency
response. Switch the test pattern back to FULL FIELD BARS.
3. Monitoring R-Y output on CH-A2 on the waveform monitor, adjust JRV3 (the
the R-Y Level) for 700mVp-p, and adjust KRV2 (R-Y Clamp) to line up the zero
crossing of the waveform, and settle at a quiet state.
4. Monitoring B-Y output on CH-A3 on the waveform monitor, adjust JRV2 (the
B-Y Level) for 700mVp-p, and adjust KRV1 (B-Y Clamp) to line up the zero
crossing of the waveform, and settle at a quiet state.
S-Video Input Level
1. Select the S-Video input source using the Video In front-panel button.
2. From the Factory Calibration sub-menu, turn OFF Calibration Mode. Press Exit
to return to the Factory Calibration sub-menu.
3. Select each of the individual controls SVid-Cal Luma and SVid-Cal Black. Adjust
each of these options with the front panel control knob for correct setup level and
714mV White-to-Blanking on the output monitor.
4. Select the SVid-Cal Chroma option, and adjust it with the front panel control
knob for correct chroma on the vectorscope.
5. From the Factory Calibration sub-menu, select Save Calibration, and press Exit.
SDI Input Check
106
DPS-475/575 Service Manual
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