Audio System Adjustment; Rts Intercom Adjustment; Prod Cancel - Sony HDCU2500 Maintenance Manual

5-2.

Audio System Adjustment

5-2-1.

RTS Intercom Adjustment

Measuring equipment
• Oscilloscope
• Audio oscillator
Precautions
• This adjustment is described on the premise that the output impedance of the audio oscillator is 600 Ω.
• When the intercom system is the RTS system, perform this adjustment.
Preparation
• Extend the AVP-15 board using an extended board.
• CCU CONFIGURATION menu → INTERCOM (C07)
→ ENGINEER: RTS
→ TERMINATION: ON
• CCU CONFIGURATION menu → INTERCOM (C07)
→ PRODUCER: RTS
→ TERMINATION: ON
• CCU CONFIGURATION menu → FRONT INCOM (C08) → INCOM MIC: CARBON
Adjustment Procedure

PROD CANCEL

1. Turn the INTERCOM switch on the front panel to PROD side .
2. Input a sine wave (1 kHz, 220 mV p-p (–20 dBu)) to pin 2 (X), pin 1 (Y), and pin 3 (G) of the INTERCOM connector
from the audio oscillator.
Audio oscillator
600 Ω
GND
HDCU2500
INTERCOM switch
INTERCOM connector
5 1
2
4
3
5-4