70 Installation TB7300 Installation and Operation Manual
© Tait International Limited December 2022
5.7.2 Connecting DC Power (12V DC variant)
The base station is designed to accept a nominal 13.8V DC, with negative
ground.
Notice Any mains power supply used to power the base station is
required to meet the isolation separation for reinforced insulation of
3000Vrms or 4242VDC.
The DC power connector at the rear of the base station is a heavy-duty M4
screw terminal connector suitable for many forms of connection.
Notice For AC powered base stations, this is an auxiliary supply out-
put, 13.5V DC at 1.0 amps.
You must connect the DC supply from the battery to the base station via a
readily accessible disconnect device such as a fuse or DC-rated circuit
breaker with the appropriate rating, as shown in the table below.
Figure 5.5 Base station (DC variant) inputs and outputs
b
ground connector
g
RF output
c
system interface connector
h
1PPS input connector
d
Ethernet interface connector
i
-VDC input
e
RF input
j
+VDC input
f
serial RS-232 connector
1)
External reference input
b
c
d
e
f
g
h
i
j
1)
Pin Signal Name Signal Type Notes External View
1 ground input The maximum current for
each band:
■ B band: 50W 9.6A
Typical
■ H band: 40W 8.1A
Typical
■ K band: 35W 8.3A
Typical
2 13.8VDC input
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