3-114
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
3-11. LTC Alignment and Full Erasure Current Check (TC-96 Board)
3-11-1. Adjustment Overview
When the TC-96 board is repaired or replaced, perform the time code system alignment.
Tools List
To perform the time code system alignment for the VTR, prepare the following equipment and fixtures.
. Oscilloscope: TEKTRONIX 2465B or equivalent
. Audio level meter: HEWLETT-PACKARD HP3400A or equivalent
. Alignment tapes: SR5-1 (Part No. 9-960-075-01) or
SR5-1P (Part No. 9-960-075-51)
n
Prepare either SR5-1 (for 525/60 system) or SR5-1P (for 625/50 system) in accordance with the
operation system to be adjusted.
. Recording tape: BCT-SX series (Betacam SX cassette)
(Sony’s standard products)
n
For this recording tape, prepare the virgin tape or no recorded tape that erased using the tape eraser, etc.
in advance.
Adjustment Items
Section Item (Section title) Adjustment point Measurement point
3-11-2 LTC playback level check — TP102/TC-96(A-2)
3-11-3 LTC recording level check — TP100/TC-96(A-3), TP101/TC-96(A-2)
3-11-4 Full erasure current check — TP201/TC-96(B-1), TP200/TC-96(B-1)
3-11-5 LTC erasure current adjustment 1LV300/TC-96(A-1) TP301/TC-96(B-1), TP300/TC-96(B-1)
Common Preparation
Perform the settings of control panels’ switch, before starting the adjustments.
Return the all settings to the customer settings after completing the alignment.
Part Item Customer setting Setting at adjustment
Upper control panel TC: LTC/AUTO/VISC ______________ 8 LTC
TC GENERATOR: INT/EXT ______________ 8 INT
PRESET/REGEN ______________ 8 REGEN
REC RUN/REC RUN ______________ 8 REC RUN
REMOTE/LOCAL selection ______________ 8 LOCAL (9P: unlit)
Sub control panel REC INHIBIT switch ______________ 8 OFF
KEY INHIBIT switch ______________ 8 OFF
3-11. LTC Alignment and Full Erasure Current Check (TC-96 Board)
3-11-1. Adjustment Overview
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