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PES1900NR Operations Manual
Chapter 7. Connecting External Alarms — 113
External DC Input Voltage
The repeater has one analog input, to
monitor an external DC power source.
The monitoring range is from 0 to
60volts, with a resolution of 250mV.
1. Connect an external DC power
source to the repeater, using a
single lead from the positive
line/terminal of the battery to
Connector J1, as shown in
Figure 95.
2. Connect the negative lead of
the battery to the repeater’s
chassis-ground terminal.
CAUTION: Do not allow any input to exceed the 60-Volt limit.
Power Amplifier (PA) External
Disable Input
To disable the forward and reverse
power amplifiers of the repeater, use
terminal 6 (for forward PA) and pin 7
(for reverse PA) of connector J1.
If these inputs are open, or are
connected to a voltage of at least
5 VDC, the corresponding power
amplifier is disabled. If you return these
pins to ground, the “external disable”
function, itself, becomes disabled.
Figure 96 shows the Power Amplifier
disable function.
Figure 96 External Power Amplifier Disable Function
Figure 95 Typical DC Monitoring Configuration