Bird Technologies ACMI - Manual (Page 20)

8
Figure 3 High Voltage DB-15 Power/Alarm Connector, Female
Pin Description
1 Relay 1, VSWR alarm contact
(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
(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
(open when relay is not energized or loss of power to unit)
(closed when the relay is energized)
9 Relay 1, VSWR Alarm contact
(open when relay is not energized or loss of power to unit)
(closed when the relay is energized)
10 DC input, + terminal. See Figure 4.
11 DC input, – terminal. See Figure 4.
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 4 Power/Alarm Connector Wiring, Female