FMBM-02

FMBM-02

AM/FM broadcast monitor with MPX I/O (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.

 

 
FMBM_01_02 (Small).jpg
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, drift

 

The FMBM-02 offers the following extra features:

 Multiplex input / output (selectable)

 Selection of 3 Peak Detection integration times

 Optional AES digital audio output

 

 

 

 SPECIFICATIONS

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