Service manual

Master Enable/Tally
Location: Rear of Recorder Interface Unit - labelled ‘Master Enable/Tally’
Mating connector required: 37-way D type male
Master Enable
Master Rec Enable and Master Play Enable should be connected to Multitrack Master Rec
and Master Play if remote punch in/out is required.
Master Enable 1-8
+-
PIN PIN
Master Rec Enable 18 17
Master Play Enable 16 15
Not Allocated 14 13
Not Allocated 12 11
Not Allocated 10 9
Not Allocated 8 7
Not Allocated 6 5
Not Allocated 4 3
Master Tally
Tallies must be connected via a resistor of appropriate value to limit current to less than
10mA, e.g. if tally signal from machine is active high 5V it would be connected to the + PIN
via a 470 ohm resistor.
Master Play Tally MUST be activated before MTR Record Enables will function. Master Rec
Tally is optional but will allow cancellation of MTR Rec Enables when MTR is taken out of
record by another means.
Master Tally 1-8
+-
PIN PIN
Master Play Tally 36 35
Master Rec Tally 34 33
Not Allocated 32 31
Not Allocated 30 29
Not Allocated 28 27
Not Allocated 26 25
Not Allocated 24 23
Not Allocated 22 21
Digital Service Manual
Issue 3 Page 58
N/O
COM
Normally open relays rated at:
0.5A switching current
10VA max switching power
100V max operating voltage
1A max closed contact rating
+
-
Opto-isolated inputs
Rated at 10mA
VDC
R 10mA