Sony CA-570 Maintenance Manual page 8

1-3. Connectors and Cables
Note1: Specifications of BATT IND Signal
VTR has a battery voltage detection and waring signal generation circuits and it sends the signal shown
below to the camera.
Battery Terminal
17.0—11.1 V dc
Voltage
(VTR internal battery)
Input Signal at
Pin 13
LED on Viewfinder Stays out
Note2: Specifications of REC ALARM Signal
+1
5.0
_0.5 V dc
Input Signal at
Pin 15
2.5 ±0.5 V dc
0 ±0.3 V dc
Power
OFF
VTR Action
1-4 (E)
11.1—10.8 V dc
1.0 ±0.2 Hz
duty 50 ±10 %
0 V
Blinks at 1 Hz
REC ALARM
signal
1.0 ±0.2 Hz
duty 50 ±10 %
Power When VTR changes
ON from POWER SAVE
to REC START mode,
or when the servo is
lost
10.8 V dc —
2—3 V dc
across 300 Z
Lights up
REC RESET signal
10—100 ms
When VTR At the end of
changes from tape or When
STANDBY to VTR is put
REC START into STOP
mode, or in mode by itself
REC mode (REC RESET
signal does
not appear
when VTR is
put into STOP
mode by
operating the
camera)
STOP
mode
CA-570 P1