BIRD ACM500I M Series, Operation Manual

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ACMI Operation Manual
11
Figure 4 Voltage DB-15 Power/Alarm Connector, Female
Pin Description
1
Relay 1, VSWR alarm contact, normally closed
(closed when relay is not energized or loss of power to unit)
(open when the relay is engaged)
2 Relay 1, VSWR alarm common contact
3
Alarm output, TTL compatible
TTL High (

4.3 VDC with a 10k load) = no alarm
TTL Low (<0.2 VDC) = alarm (VSWR, Low, or High Power)
4
PTT input, +5V to +24V to activate,
0V or open to deactivate
5
Reset input, TTL compatible
TTL Low (<0.5 VDC) resets all active alarms
6
Relay 2, Power Alarm contact, normally closed
(closed when relay is not energized or loss of power to unit)
(open when relay is energized)
7 Relay 2, Power Alarm common contact
8
Relay 2, Power Alarm contact, normally open
(open when relay is not energized or loss of power to unit)
(closed when the relay is energized)
9
Relay 1, VSWR Alarm contact, normally open
(open when relay is not energized or loss of power to unit)
(closed when the relay is energized)
10 DC input, + terminal. See
Figure 5
.
11 DC input, – terminal. See
Figure 5
.
12
Analog FWD, 0 to 5 VDC linearly proportional to forward power, 200
ohm output impedance
13
Analog RFL, 0 to 5 VDC linearly proportional to reflected power, 200
ohm output impedance
14 - 15 Ground
Figure 5 Power/Alarm Connector Wiring, Female