Sony BVP-550 Maintenance Manual page 234

1-1. Connectors and Cables
Note 2 : Specifications of BATT ALARM Signal
VTR has a battery voltage detection and waring signal generation circuits and it sends the signal shown
below to the camera.
Battery Terminal
12.0—11.1 Vdc
Voltage
(VTR internal battery)
Input Signal at
Pin 19
LED on Viewfinder Stays out
Note 3 : Specifications of REC TALLY Signal
+1
5.0
-0.5 Vdc
Input Signal at
Pin 62
2.5 ± 0.5 Vdc
0 ± 0.3 Vdc
Power
OFF
VTR Action
Note 4 : Specifications of TAPE REM Signal
Tape Remaining (VTR) Input Signal at Pin 25
TAPE1 TAPE2
+5 V +5 V +3.4 V
+5 V 0 V +3.1 V
0 V +5 V +2.2 V
0 V 0 V 0 V
1-4 (E)
11.1—10.8 Vdc
1.0 ± 0.2 Hz
duty 50 ± 10 %
0 V
Blinks at 1 Hz
REC TALLY
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
G TALLY lamp lights at +3.1 V
10.8 Vdc—
Lights up
REC RESET signal
10—100 msec
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)
Remark
2—3 Vdc
across 300 Ω
STOP
mode
BVP-550