page 2 – 6
220 / March 2000
I N P U T M O D U L E
Off Tally
Identical to “On Tally” (preceding), only this tally is active when
the module is OFF. Off Tally A is Pin 2.
Tally B
Provides a remote indication that the module’s B source has been
selected. This control function provides a continuous closure (open
collector) between Pin 6 (Tally B) and Digital Ground (Pins 4, 17 or 19)
whenever the B source is selected.
This closure can be used to control an externally powered tally light
that requires a continuous closure to function. An external tally light
(i.e., LED) can be powered from the input module by connecting the
external LED to +5V Digital (Pin 5 or Pin 18) and the B Tally port. In
either case, current should not exceed 30 milliamps.
Stereo Line Analog Inputs
Audio Connections
These include A and B source inputs; level is +4dBu balanced.
Pin 25 – Line A In Lt SH
Pin 24 – Line A In Lt HI
Pin 12 – Line A In Lt LO
Pin 11 – Line A In Rt SH
Pin 10 – Line A In Rt HI
Pin 23 – Line A In Rt LO
Pin 22 – Line B In Lt SH
Pin 21 – Line B In Lt HI
Pin 9 – Line B In Lt LO
Pin 8 – Line B In Rt SH
Pin 7 – Line B In Rt HI
Pin 20 – Line B In Rt LO
Stereo Line Digital Inputs
Audio Connections
These include A and B source inputs (AES).
Pin 25 – Line A AES SH
Pin 24 – Line A AES HI
Pin 12 – Line A AES LO
Pin 11 – Line B AES SH
Pin 10 – Line B AES HI
Pin 23 – Line B AES LO
Typical DB-25
connector
9
10
11
12
13
22
23
24
25
6
7
8
19
20
21
4
5
16
17
18
1
2
3
14
15
We recommend a series
resistor between the LED
and +5V digital when you
are powering the external
tally from the console; a
value of 220
Ω
(1/4W 5%)
is suggested.
220 / Sep 2000