Sony BVP-900 Series System Manual page 136

To supply no power
If power supply to the microphone is not necessary, set
the switches as follows:
On the BVP-900/900P: Set the microphone power
switches on the right side panel to OFF.
On the CA-570/570P: Set the S700 and S800 switches
on the AU-251 board to OFF.
To supply A/B power
On the BVP-900/900P: Set the S4 switch on the CN-
1607 board, back of the microphone board, to ON,
and set the microphone power switches on the right
side panel to "•".
On the CA-550/550P: Set the SW5 switch on the AU-
211 board to AB, and the MIC PW switch on the
front panel of the board to ON.
On the CA-570/570P: Set the S800 switch on the AU-
251 board to ON, and the external microphone
power supply mode switches on the rear to "•".
To supply phantom power
On the BVP-900/900P: Set the microphone power
switches on the right side panel to +48 V.
On the CA-550/550P: Set the SW5 switch on the AU-
211 board to PHANTOM, and the MIC PW switch
on the front panel of the board to ON.
On the CA-570/570P: Set the external microphone
power supply mode switches on the rear to +48 V.
Monitoring a microphone sound
You can monitor a microphone sound with the headset
connected to the intercom 1 channel. Set the MIC
MONITOR switch on the front panel of the AU-250
board of the BVP-900/900P, or the S351 switch on the
AU-251 board of the CA-570/570P to ON.
Factory setting: OFF
Remote control of the input level of a
microphone
You can control the level of the microphone signal
input to the AUDIO IN CH-1/CH-2 connectors on the
BVP-900/900P, the MIC IN connectors on the CA-
550/550P or the MIC connector on the CA-570/570P
from the CCU-700A/700AP/550A/550AP. The
adjustable range is from –60 dBu to –20 dBu in 10
dBu steps.
Adjusting using the MIC LEVEL switches on
the CCU-700A/700AP/550A/550AP
CCU-700A/700AP
AT MIC LEVEL
CCU REAR
NORM NORM
PAINT INCOM MIC
–12 –5 +5 +12
MIN MIN
CLEAR DYNAMIC CARBON
CH-1 CH2
MIC LEVEL switches
CCU-550A/550AP
BUZZER
AT NORM NORM CCU
ALARM LEVEL
PAINT BUZZER
MIN MIN
CH-1 CH-2
CLEAR OFF ON
MIC LEVEL
MIC LEVEL switches
AT board of the CCU-700A/700AP/550A/550AP
When nothing is connected to the MIC REMOTE
connector on the rear of the CCU-700A/700AP/550A/
550AP or the level of pin 8 (MIC 1) and pin 15 (MIC
2) of the MIC REMOTE connector is high, you can
adjust the microphone input level with the MIC
LEVEL switches on the front panel of the AT board of
the CCU-700A/700AP/550A/550AP.
Adjusting from the MIC REMOTE connector
on the CCU-700A/700AP/550A/550AP
You can adjust the microphone input level via the
MIC REMOTE connector on the rear of the CCU-
700A/700AP/550A/550AP.
If the software version of the AT board is 2.00 or
before
When the level of pin 8 (MIC 1) and pin 15 (MIC 2)
of the MIC REMOTE connector is GND, you can
adjust the microphone input level via the MIC
REMOTE connector.
Setting the microphone input level of the video camera
Microphone MIC IN CH-1
Pin No. 7 6
–60 dBu H H
–50 dBu L H
–40 dBu H L
–30 dBu L L
–20 dBu H H
H: +5 V (C-MOS level)
L: GND
Input impedance: 47 kilohms (CCU-700A/700AP)
100 kilohms (CCU-550A/550AP) +5 V pull up
ENG PROD
INCOM
SELECT
ENG I PROD PGM SIDE 2W 2W NTS 2W 2W NTS
PRIVATE MIX TONE LEVEL CANCEL CANCEL LEVEL CANCEL CANCEL
CAM POWER
ON/OFF
MIC IN CH-2
5 14 13 12
H H H H
H L H H
H H L H
H L L H
L H H L
3-55
Chapter 3 Initial Settings