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132 Chapter 2 - Installation
Audio
B1707M00LD
September 2000
THOMSON TTV1707 / CCU DT500
User manual
In the Channel Control Unit
The «MICRO AMBIENCE» sound output level can be adjusted on the «SOUND/AUX»
card over the range -6 dB to + 18 dB. This adjustment is made using selector switch S500
«0 dB + 12 dB» and «LEVEL» potentiometer R500.
2.3.2 - Intercom
On the camera rear strip panel
Cameraman’s headset microphone
Microphone type
The microphone used must be an electrostatic microphone having a sensitivity of - 40 dB.
The camera provides the microphone with a supply voltage of + 9 Volts from the
headset-microphone connector.
Type of earphone
The earphones used must be electrodynamic. The maximum level applied to each
earphone is approximately 8 V peak-to-peak/300 Ohms.
In the Channel Control Unit
The «INTERCOM» link of the sound engineer’s control room may be of the 4-wire or
RTS/CLEARCOM type.
4-wire link
• Selector switches S560 and S50 on the «SOUND/AUX» board of the Channel Control
Unit should be set to 4W.
• The «INTERCOM» sound output level can be adjusted on the «SOUND/AUX» board
of the Channel Control Unit over the range - 6 dB to + 18 dB. The adjustment is
performed using «0 dB + 12 dB» selector switch S540 and «LEVEL» potentiometer
R540.
• The «INTERCOM» sound input level can be adjusted on the «SOUND / AUX» board
of the Channel Control Unit over the range - 6 dB to + 18 dB. The adjustment is made
using the «0 dB + 12 dB» selector switch S581 and the «LEVEL» potentiometer R580.
R500
S500
SOUND / AUX PCB