FMBM-01

FMBM-01

AM/FM broadcast monitor (NOTE-requires 12VDC power supply)




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Davicom's AM/FM Broadcast Monitor offers a surprising number of advanced features in a compact, low-cost package. Remotely controllable through Davicom's line of intelligent site monitoring systems, the FMBM can also be manually configured and operated.
 
Designed for full and easy integration into the Davicom's powerful control and monitoring structure, the FMBM gives you the benefit of remotely monitoring the key RF parameters of your AM or FM transmitter to ensure regulatory compliance.
 
 
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Both units offer the following features:

 

Synthesized tuning
Non-volatile configuration storage
On-site monitoring of transmitter power
Off-air monitoring of receive signal strength
FM deviation measurement and alarms
Carrier frequency measurement and alarms
RDS/RBDS decoding
Balanced audio output on back panel and headphone output on front
All alarms levels are settable by the user, locally or remotely
Full remote control and monitoring through any Davicom unit with USB interface
Alarm contacts for: stereo absence, high deviation, low deviation, low power, carrier frequency and drift
 
 
 
 
FMBM Specifications
AM band
Tuning range
520-1710 kHz
Tuning Step
1 or 10 kHz, selectable
FM band
Tuning Range
88-108 MHz
Tuning Step
200, 100 or 50 kHz selectable
Program de-emphasis
50 or 75uS (set by internal jumper)
Low-level input
Connector
F
Input range
-70 to -33 dBm
High-level input
Connector
BNC
Input range
-16 to +20 dBm
Multiplex Input/Output (FMBM-02 only)
(input or output selectable from menu)
Connector
MPX IN
MPX OUT
BNC
Ajustable input level (rear panel)
3 volts p.-p. (fixed level)
Carrier frequency drift measurement
Accuracy
± 0.3ppm for a temperature range of 0 to 50°C
Resolution
100 Hz
RDS/RBDS decoder
Type
PS, PTY, RT
Analog Audio outputs
Type
Balanced
Output impedance
600 ohms
Connector
Pluggable screw terminal
Level
Preset to +8dBm, adjustable from 0 to +10dBm
Digital audio output (FMBM-02 only)
Level
Preset to -14dBFS at 100% modulation
Headphone output
Load impedance
> 8 ohms
Connector
3.5mm
FM deviation monitor
Connector
Pluggable srew terminal
Output impedance
600 ohms
Level
0 to 5 Vdc for 150 kHz deviation
RF power monitor
Connector
Pluggable screw terminal
Output impedance
600 ohms
Level
0 to 7 Vdc
Peak Detector (FMBM-02 only) Integration time 1, 2.5 and 5 ms (selectable, internal jumpers)
Alarm relays
Normally open isolated contacts that can be individually set to normally closed by internal jumpers
Connector
Pluggable screw terminal
Alarm functions
Low-power
Frequency drift
High deviation
Low deviation
Stereo absence
USB interface
Functions
Allows remote control and continuous alarm monitoring through compatible Davicom MAC units
Also used for firmware upgrades
Software remote control
Through Davicom unit
Audio level adjustment (rear connection)
Frequency Band
FM peak-deviation limit
FM deviation peaks-per-minute count
FM low-deviation limit
FM low-deviation timeout
FM frequency-drift limit
FM RF alignment
Low-power limit
AM low-modulation limit
AM low-modulation timeout
Manual control
Via front panel pushbuttons
Same functions as via software remote control above plus:
RF input selection
Headphone volume adjustment
Power reference level
Dimensions
1 RU, half width
Weight
1.0 kg (2.2 lbs)
 
RoHS Compliant