RDL FP-MR2 Datasheet

FLAT-PAK™ SERIES

Model FP-MR2
Message Repeater

 Repeating Single Message
 Music Quality Message Recording
 Up to 1.7 Minute Digital Message Storage
 External/Remote Message Actuation
 Interval Timer to Repeat Message Playback
 Background Music Input

 Automatic Voice-Over or Music Ducking

The FP-MR2 is part of the group of versatile FLAT-PAK products from Radio Design Labs. The unique FLAT-PAK case can be directly screwed
or bolted to cabinets or shelves. Optionally available rack-mounting accessories permit single or multiple FLAT-PAK module mounting.

APPLICATION: The FP-MR2 is a message repeater that permits electronic storage of a single recording up to one
minute forty seconds in duration. This message may be played back manually using an external contact closure to
ground or using the front-panel START button. The message may also be played back periodically using the interval
timer included in the FP-MR2. A balanced line-level music input allows background music to be connected and the
associated input potentiometer allows the installer to set the music level. When message playback is triggered, the
music is faded down. At the conclusion of the message, the music level fades back up. A front-panel DIP switch
sets the music to fade under the message (-20 dB nominal) or completely off (used for messages containing music).
The module output level is a nominal +4 dBu balanced. The output level is indicated on an RDL dual-LED VU meter
which is used to set the proper music and recording levels.

The message may be recorded once, at installation, then played back repeatedly. The message may be re-recorded
at any time and is retained when power is removed from the module. The recording input is a standard -10 dBV
consumer level unbalanced phono jack. An input level trimmer is provided to set the correct recording level which is
indicated on the dual-LED meter. The front-panel RECORD ENABLE pushbutton erases the message in memory and
enables recording, indicated by the RECORD ENABLE LED. The module begins recording when the START button
is pushed and continues until the button is released. The REC LED is illuminated during recording. An integral audio
compressor maintains a consistent average recording level over 20 dB of input level variation without significant
audible effect on the signal dynamics.

Message playback is triggered when the front-panel START button is pressed with the FP-MR2 not in the RECORD
ENABLE mode. Playback may also be activated by a remote momentary closure to ground on the TR terminal or by
using the internal interval timer. The external trigger causes the message to play each time the terminal is grounded.
A DIS (disable) terminal is provided to prevent the module from ducking the music audio and playing the message.
As long as the DIS terminal is grounded, the module will not play. When released, the module will play the next time
it is triggered either externally or internally. Grounding the DIS terminal while a message is playing will abort the
playback. If the internal timer calls for message playback while the DIS terminal is grounded, the message will play
upon release of the terminal. While the module is playing, the PL (playing) output terminal is held low. This terminal
is used to control other equipment, and is particularly useful for disabling another FP-MR2 in installations where
FP-MR2s are connected in series for multiple repeated announcements. At the conclusion of each playback, the EM
(end of message) terminal pulses to ground for >100 mS. This terminal may be used to trigger other equipment or
additional FP-MR2 module playback. The internal interval timer is controlled by front-panel DIP switches. The time
between messages is selected in 30 second increments from 30 seconds to 7.5 minutes. The selected increment is
multiplied x1 or x8 for a maximum time interval of 60 minutes.

The FP-MR2 operates from ground-referenced 24 Vdc. Use the FP-MR2 individually, or combine it with other RDL
products as part of a complete audio/video system.

RDL  659 6th St.  Prescott, AZ., USA 86301  [phone]  FAX [phone]  www.rdlnet.com

FLAT-PAK™ SERIES

Model FP-MR2
Message Repeater

Installation/Operation

Declaration of Conformity available from rdlnet.com.
Sole EMC specifications provided on product package.
Specifications are subject to change without notice.

TYPICAL PERFORMANCE

Music Input
Input: 50 k
Input Level (for +4 dBu out):
Frequency Response: 30 Hz to 40 kHz (+/- 1 dB)
THD+N: < 0.05% (1 kHz)
Noise below +4 dBu: < -70 dB (unity gain)
CMRR: >70 dB (50 to 150 Hz)

Control
Control Inputs (2): TRIG and DISABLE, Pull to ground, 1 mA
Control Outputs (2): Open-collector @ 25 mA



balanced or unbalanced

-18 dBu bal. (-20 dBV unbal.) to +18 dBu bal. (+16 dBV unbal.)

Radio Design Labs Technical Support Centers

U.S.A. [phone], [phone]; Fax: [phone]

891-2170C

Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287

NOTE: This equipment has been tested and found to
comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rule. These limits ar e designed to
provide reasonable protection against harmful interfer ence
in a residential installation. The equipment generates,
uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions,
may cause harmful interference to radio communications .
However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does
cause harmful interference to radio or televis ion reception,
which can be determined by turning the equipment off an
on, the user is encouraged to try to correct the
interference by one or more of the following measures:

 Reorient or relocate the receiving antenna
 Increase the separation between the equipment

and receiver

 Connect the equipment into an outlet on a circuit

different from that which the receiver is
connected.

 Consult the dealer or an experienced radio/TV

technician for help.

Recording Input
Input: 10 k unbalanced
Input Signal:
Frequency Response: 80 Hz to 12 kHz (+/- 1.5 dB)
Noise below +4 dBu: < -65 dB

Output: 150
Output Level: +4 dBu nominal

Power Requirement: 24 Vdc @ 60 mA, Ground-referenced
Dimensions: Width: 3.25 in. (8.26 cm); Length: 5.00 in. (12.70 cm); Height: 1.36 in. (3.46 cm)

-20 dBV to 0 dBV



balanced or 75  unbalanced