Setting The Microphone - Sony HDCU-900 Series Installation And Maintenance Manual

2-2. Audio System

2-2-2. Setting the Microphone

This unit can output the two independent microphone lines
(MIC 1, MIC 2) of video camera HDC-900/950 as it
receives these MIC signals.
Controlling the Microphone Input Level Using the
Remote Control
This unit can adjust the input level of the MIC connector of
camera HDC-900/950 using the remote control in the
range of _60 dBu to _20 dBu in 10 dBu steps using either
of the following methods.
1. Adjusting the microphone input level using
the MIC LEVEL switch
AT REFERENCE H PHASE
REF GEN
POWER /1.001 IN LOCK REMOTE LOCAL
HD BB
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 AT-141 board panel of the unit
to set the microphone input level.
Factory setting : NORM (60 dBu)
2. Adjusting the input level of the microphone
using the MIC REMOTE connector
Set the microphone input level control to ON or OFF via
pin-8 and pin-15 of the MIC REMOTE connector on the
rear as shown below. The input level 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
AT-141 board panel)
2-18 (E)
MIC LEVEL CCU TALK 2 WIRE
INCOM
NORM NORM LEVEL CANCEL
SELECT
MIN MIN
1 2
PGM SIDE
FINE ENG PROD
CH-1 CH-2
PRIVATE MIX TONE
AT-141 board (panel side)
MIC IN CH-2
ON
OFF
ON
Setting the microphone input control of the video camera
Pin No. 7
_60 dBu H
_50 dBu L
_40 dBu H
_30 dBu L
_20 dBu H
H : +5 V or OPEN
L : GND
Input resistance : Pulled-up 47 kZ +5 V
3. Adjusting the MIC signal phase
DPR MAIN OUTPUT
SYSTEM
POWER POWER /1.001 60 50 P F CHU LOCK
S
30 25 24
When the PGM microphone signal phase is in advance
with respect to the video signal phase in use, adjust the
audio phase using the AUDIO PHASE switch on the DPR-
163 board panel 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
L H
H L
OPTICAL
AUDIO PHASE
CONDITION
540P 1035
CCU CHU
AUDIO PHASE switch
DPR-163 board (panel side)
HDCU-900 IMM