Setting The Microphone - Sony HDCU-950 Installation And Maintenance Manual

2-3. Audio System

2-3-2. Setting the Microphone

This unit can output the two independent microphone lines
(MIC 1, MIC 2) of video camera HDC-950/930 as it
receives these MIC signals.
Controlling the Microphone Input Gain Using the
Remote Control
This unit can adjust the input gain of the MIC connector of
camera HDC-950/930 using the remote control in the
range of 60 dB to 20 dB in 10 dB steps using either of the
following methods.
1. Adjusting the microphone input gain using
the MIC LEVEL switch
MIC LEVEL switch
When the MIC REMOTE connector on the rear is connect-
ed to nothing or the levels of pin-8 (MIC 1) and pin-15
(MIC 2) of the MIC REMOTE connector are High, use the
MIC LEVEL switch on the AVP-4 board panel of the unit
to set the microphone input level.
Factory setting : NORM (60 dB)
2. Adjusting the microphone input gain using
the MIC REMOTE connector
Set the microphone input gain control to ON or OFF via
pin-8 and pin-15 of the MIC REMOTE connector on the
rear as shown below. The input gain can be controlled via
pin-5, pin-6 and pin-7 as shown in the table on the top-
right.
Setting the microphone input control of the video camera
Pin No. Microphone connector
8 15 MIC IN CH-1
L L ON
L H ON
H L OFF
H H Internal setup (MIC LEVEL switch on the
AVP-4 board panel)
2-10 (E)
AVP-4 board (panel side)
MIC IN CH-2
ON
OFF
ON
Setting the microphone input gain of the video camera
Pin No. 7
60 dB H
50 dB L
40 dB H
30 dB L
20 dB H
H : +5 V or OPEN
L : GND
Input resistance : Pulled-up 100 kZ +5 V
The setup for HDCU-700A mode is shown in parenthesis ( ).
In the case of HDCU-700A mode : S423-2/AT-149 → ON
3. Adjusting the MIC signal phase
S15
When the PGM microphone signal phase is in advance
with respect to the video signal phase in use, adjust the
audio phase using the switch S15 (MIC DELAY) on the
AVP-4 board to adjust amount of audio delay. Each step
of the switch corresponds to about 5 ms delay.
Example 7 : 1 FRAME DELAY (30 FRAME/SEC)
8 : 1 FRAME DELAY (25 FRAME/SEC)
Factory setting : 0
6 5
H H
H H
L (H) H (L)
L (H) H (L)
H (L) L (H)
AVP-4 board (A side)
HDCU-950 IMM