Sony BVP-570, Maintenance Manual

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1-4 (E)
BVP-570
1-2. Connector Input/Output Signals
Battery Terminal
Voltage
(VTR internal battery)
12.0—11.1 V dc 11.1—10.8 V dc
10.8 V dc—
2—3 V dc
across 300
Z
0 V
Input Signal at
Pin 19
LED on Viewfinder
1.0 ± 0.2 Hz
duty 50 ± 10 %
Stays out Blinks at 1 Hz Lights up
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.
Note 3
: Specifications of REC TALLY Signal
Note 4
: Specifications of TAPE REM Signal
Input Signal at
Pin 62
5.0
REC TALLY
signal
1.0
±
0.2 Hz
duty 50 ± 10 %
REC RESET signal
10—100 msec
VTR Action
Power
OFF Power
ON When VTR changes
from POWER SAVE
to REC START mode,
or when the servo is
lost When VTR
changes from
STANDBY to
REC START
mode, or in
REC mode At the end of
tape or When
VTR is put
into STOP
mode by itself
(REC RESET
signal does
not appear
when VTR is
put into STOP
mode by
operating the
camera) STOP
mode
+ 1
_ 0.5 V dc
2.5 ± 0.5 V dc
0
±
0.3 V dc
Tape Remaining (VTR) Input Signal at Pin 25 Remark
TAPE1 TAPE2
+ 5 V + 5 V + 3.4 V
+ 5 V 0 V + 3.1 V G TALLY lamp lights at + 3.1 V
0 V
+
5 V
+
2.2 V
0 V 0 V 0 V