Grass Valley TTV 1707 - Manuel (Page 131)

Chapter 2 - Installation 131
Audio
THOMSON TTV1707 / CCU DT500
User manual
B1707M00LD
September 2000
2.3 - AUDIO
2.3.1 - Ambient sound
On the camera rear strip panel
Microphone type
The microphone connected to the «MIC IN» socket may be electrodynamics or electros-
tatic. The rated input level shall be between - 60 dB and - 40 dB.
In the first case (dynamic microphone), place the «0/48 V» switch on «OFF», and in the
second case (electrostatic microphone), set the «0/48 V» switch to «48 V».
Depending on the sensitivity of the microphone used, the audio level can be adjusted in
steps of 20 dB using the «- 40 dB/- 60 dB» attenuator and gradually using the «SENSITI-
VITY» control (± 5 dB).
Important note: The «REAR CAM/SPLIT HEAD» switch shall be set to «REAR CAM».
The «SLIT HEAD» position is used when the camera is configured with an analysis unit
separate from the camera body and when the ambient microphone is connected to a
separate power pack. In the «SPLIT HEAD» position, the effect of the «SENSITIVITY»
control is approximately ± 1 dB.
CAM
CALL VIDEO RET
ON
OFF
1
2
+
- MENU
TRIAX DC OUT
SENSITIVITY
REAR CAM
SPLIT HEAD
-40dB
-60dB
48v
OFF
MIC IN
LEVEL (ON)
ON
REM
MONITOR RET. 1 PROMPTER / RET. 2
1
2
3
Microphone input fine
adjustment
Microphone input selection
Microphone input 20 dB
attenuator on/off switch
Microphone 48 V phantom
supply on/off
Ambient microphone input
BACK OF CAMERA