Harris Legacy 99-1300-0, Operation & Technical Manual

Page: 46 / 98

Revision B • 1/03
H A R R I S C O R P O R A T I O N
2-34
2 Installation
CONTROL ROOM MODULE — LOGIC
The 14-pin Logic connector has the warning
light output “relay,” the remote mute and dim
control inputs, and three indicator outputs (talk-
back, dim, mute).
Pins 4 and 5 offer an isolated contact pair
for triggering an external warning lamp inter-
face.
To use the remote inputs (Dim, on pin 9; Mute
on pin 8), pin 14 (Activate Logic Inputs) must
be tied to Logic 5VDC (pin 6 or 7), or
if an external device rather than a switch is
activating these inputs, then this voltage should
come from the external device to keep the con-
sole isolated.
Control Room Module, Logic — Simplified Logic Diagram
14
9
8
5
12
4 Warning Relay
Warning Relay
Dim Tally
Logic Ground
Logic Ground
Logic Ground
Tallies Common
Mute Tally
11
13
10
1
2
3
6
7
Int
e
rnal L
o
gic
Talkback Tally
Logic 5VDC
Logic 5VDC
Mute Input (-)
Dim Input (-)
Activate Logic Inputs (+)
Notes:
Opto-Isolated inputs are current limited and work
with +5 to +40 VDC logic.
Opto-Isolated outputs can sink up to 60 volts or
350 mA max. current flow.
Logic Connectors
Logic 5VDC
Logic 5VDC
Warning Relay
Warning Relay
Logic Ground
Logic Ground
Logic Ground
Activate Logic Inputs (+)
Talkback Tally
Dim Tally
Mute Tally
Mute, Dim & T/B Tally Common
Dim Input (-)
Mute Input (-)
(wire insertion end view)
7
6
5
4
3
2
1
14
13
12
11
10
9
8