page 4 – 4
220 / March 2000
C O N T R O L R O O M M O D U L E
Pin 20 – Rt Hdpn Out LO
Pin 19 – Lt CR Out SH
Pin 18 – Lt CR Out HI
Pin 6 – Lt CR Out LO
Pin 5 – Rt CR Out SH
Pin 4 – Rt CR Out HI
Pin 17 – Rt CR Out LO
Upper DB-25 “A” Connector — Control
The console’s on-air tally port is on the CRD-220 upper DB-25 A
connector. This is a simple relay closure that activates whenever pro-
grammed input modules are turned ON (see page 2-4). The port can be
used to control an externally powered tally light that requires a continuous
closure to function.
Pin 14 – On-Air Tally Relay COM
Pin 1 – On-Air Tally Relay N.O.
Lower DB-25 “B” Connector — Audio
This connector handles the module’s source select External Stereo
inputs. The port wants to see +4dBu balanced analog stereo signals.
Pin 19 – Lt Ext 1 In SH
Pin 18 – Lt Ext 1 In HI
Pin 6 – Lt Ext 1 In LO
Pin 5 – Rt Ext 1 In SH
Pin 4 – Rt Ext 1 In HI
Pin 17 – Rt Ext 1 In LO
Pin 16 – Lt Ext 2 In SH
Pin 15 – Lt Ext 2 In HI
Pin 3 – Lt Ext 2 In LO
Pin 2 – Rt Ext 2 In SH
Pin 1 – Rt Ext 2 In HI
Pin 14 – Rt Ext 2 In LO
Typical DB-25
connector
Maximum current through
the on-air tally relay clo-
sure is 2 amps @30VDC.
!
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