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2: Installation
Power Considerations
The MBX-4 possesses a 2-conductor, positive locking, circular power
connector and operate with an input voltage between 9 and 40 VDC. For
best performance, the supplied power should be continuous and clean.
You may use an in-line power filter to minimize power fluctuations
resulting from additional electrical accessories connected to the same
power supply.
The backlit LCD display of the MBX-4 receiver remains illuminated while
power is applied.
Table 2-1 Power Requirements of the MBX-4.
To power the receiver:
1. Connect the red wire of the supplied power cable to DC positive (+).
2. Connect the black wire of the supplied power cable to DC
negative (-).
3. Connect the keyed, two-conductor socket connector of the power
cable to the receiver’s power input connector, labeled PWR.
Both receivers possess reverse polarity protection to prevent damage if
the power leads are reversed.
A 1.5 A slow blow fuse, situated in-line of the power cable protects the
receiver from power surges. The fuse container should remain
accessible after installation.
Table 2-1: Power requirements
Receiver Input voltage Input current Input power
MBX-4 9-40 Vdc 210 mA @ 12 VDC 2.5 W
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