Ultech Corporation DV2000, User Manual, Page: 41 / 45

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6. Technical Reference
6.1 Calibration
Calibrating the DV2000 involves adjusting a single trimpot only. The pot sets the video output at
the analog monitor output.
Test Equipment
Component digital video pattern generator
75 ohm BNC terminator, 1%
Waveform monitor or ULTECH TV Trigger Mate & 20 MHz oscilloscope
Procedure
q q
q q q
1. Remove AC line cord. Remove (6) phillips screws from sides of top cover. Remove top
cover.
q q
q q
q
2. Attach AC line cord. Turn unit on. Allow unit and test equipment to warm-up for 15
minutes. Caution: a shock hazard exists with the top cover removed. Do not touch AC
line switch or AC wiring. Apply a stable 1Vpp stairstep pattern to Monitor Video In.
q q
q q
q
3. Adjust R22 trimpot located on the DigMon PC board for 1Vpp at Monitor Video Out
when terminated into 75 ohm.
(end of procedure)
6. Technical Reference
DigMon PC board
R22
s s
s s
s
!
A shock hazard exists with the top cover removed—only qualified
personnel should perform the calibration procedure.
Fig. 6-2. Adjustments