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Davicom FMBM, Reference Manual, March 2015
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3.1.2
Back panel & screw-terminal pinout
The FMBM’s back panel has plug-in screw terminal connectors for the alarm relay outputs,
the RF-Level and FM Deviation voltage outputs and for the balanced audio outputs. It also
has the input connectors for the Antenna and High-Level RF inputs as well as the USB and
12Vdc power connectors. Model -02 has a multiplex input/output connector and an
optional
AES digital output.
Figure 2. Back panel of FMBM-01 (Top) and FMBM-02 (Bottom)
Alarm, Monitor & Audio Outputs (see Figure 3 for details)
Antenna Input
*
: Type F connector for low-level RF input from 75Ω antenna.
Ground Terminal: Chassis ground lug.
High-Level RF Input: Input for use with on-site directional couplers or other signal
sampling devices that allow the FMBM to measure and monitor transmitter levels. Note
that when using the high level input, nothing must be left connected to the low level
(antenna) input and vice-versa because this could cause improper calibration.
The
corresponding RF Input selection must be made in the operating Menu.
Alarm, Monitor & Audio Outputs
Antenna Input
High-Level RF Input
USB Connector
Ground Terminal
12Vdc Connector
Alarm, Monitor & Audio Outputs
Ground Terminal
12Vdc Connector
USB Connector
High-Level RF Input
AES Digital OUT**
MPX IN/OUT
Antenna Input
MPX IN Level
