TB7100 Installation Guide Connections 19
© Tait Electronics Limited March 2006
DC Power
Connection
The base station is designed to accept a nominal 13.8V DC, with negative
ground.
Note The base station will not charge the battery via the DC power
connector when an internal AC power supply unit is fitted.
The DC power connector (J105) at the rear of the base station is a heavy-
duty M4 screw terminal connector suitable for many forms of connection.
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. The DC
input leads should be of a suitable gauge to ensure less than 0.2V drop at
maximum load over the required length of lead.
Terminate the DC input leads with a suitable crimp connector for attaching
to the J105 M4 screws.
Ground Point The ground point is a terminal for grounding the tray to the mounting rack.
Pin Signal Name Signal Type Notes
1 13.8VDC input
2 ground input
external view
Nominal Supply
Voltage
Input Voltage
Range
Circuit
Breaker/Fuse
Rating
Recommended
Wire Gauge
a
a. For a length of 1.5m to 2m (5ft to 6.5ft) (typical).
13.8VDC 10VDC to 16VDC 20A 8AWG / 8.35mm
2
Figure 2.3 Recommended DC power connection
Battery
TB7100
base station
Circuit Breaker
or Fuse
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