Output Video Check - Sony BRC-300 Service Manual

3-6. BRBK-302 Electrical Alignment

3-6-4. Output Video Check

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Before this check, perform "3-6-3. VCO Free-running
Frequency Adjustment".
Check Procedure
1. Set the switch S002 on the EX-947 board to ADJ.
BRC-300/300P
2. Turn on the power of the BRC-300/300P.
3. Press the BACK LIGHT button of the SIRCS remote
commander to output a 75 % color-bar signal from the
SDI OUT connector of BRBK-302.
4. Check that an error message is not displayed on the
status display of the SDI waveform monitor.
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When using the SDI waveform monitor WFM700M,
check that the message "SMPTE RP165 FF:OK
AP:OK" is displayed.
When using another SDI waveform monitor, check
that the format matches the format of the BRC-300/
300P.
Embedded CRC SMPTE RP165 FF: OK
SDI waveform monitor
3-42
EX-947
board
S002
S002
AP: OK
5. Change the display of the SDI waveform monitor to
the EYE pattern mode, and check that signal level A
satisfies the specification.
Specification: A = 720 ± 80 mV p-p
A
SDI waveform monitor
6. Change the display of the SDI waveform monitor to
the jitter measurement mode, and check that the jitter
level satisfies the specification.
Specification: When the high-pass filter is set to 10
Hz and 1 kHz, both the jitter levels are
less than 0.200 UI.
Measured jitter (P-P)
Timing : (10 Hz)
759.5 ps (0.200 UI)
Jitter level
SDI waveform monitor
7. Press the BACK LIGHT button of the SIRCS remote
commander to output a video signal from the SDI
OUT connector of BRBK-302.
8. Shoot the pattern box by the BRC-300/300P, and
check that the video signal is normal.
BRC-300/300P
BRU-300/300P