The MLW-2 can be not only used for simple correction of a problem with an input source but be used to integrate EAS broadcast tests and emergency notices, testing of audio sources prior to putting them on the air, AND control of audio for an SCA or SAP channel.
Almost all of the automatic functions are programmed via the front panel push buttons including time delays, sequencing, and thresholds. All programming is stored internally in non-volatile ram.
The MLW-2 is primarily designed for the main audio path, both main channel programming (Primary outputs) and SAP- SCA channel programming (Secondary output) and can be located either at the studio end or the transmitter end to provide automatic audio redundancy paths.
The inputs to the MLW-2 are programmable level inputs (+10 dBm to -10 dBm in 1 dB increments), balanced, bridging. The output levels are adjustable between +18 dBm and -40 dBm in 1 dB increments making the MLW-2 a perfect level translation device. The outputs are crossed balanced differential drivers capable of driving 600 ohms or greater.
Features:
- Automatic change to alternate channel on loss of channel
- Automatic change to alternate source on loss of channel or loss of signal
- 4 balanced, bridging inputs
- 3 Modes of Operation: Automatic, Manual, Forced
- Full metering of left and right channels as well as left plus right and left minus right channels on front panel
- Microprossesor contolled audio routing and VCA control for precise and inaudible audio corrections
- User programmed time delays and sequence on loss of channel and loss of signal action
- User programmed input and ouput operating levels
- Multiple manual audio control funcitons
- Secondary audio output reproduces either auxiliary input or sum of primary outputs for feedin SAP channel
FREQUENCY RESPONSE:
20-20,000 Hz, + / - 0.5 DB
HARMONIC DISTORTION:
<0.1 % THD + noise (20-20 kHz)
<0.1 IMD (SMPTE)
OUTPUTS:
STEREO PROGRAM LEFT, STEREO PROGRAM RIGHT, MONO SECONDARY
+ 19 to -30 DBM user set in 1 db increments
> 20 DBM max output at rated distortion
50 Ohm source impedance
Can drive 600 Ohm or greater termination
REMOTE I/O:
37 pin connector providing alarms, buffered audio,
MLW-2 controls, RS-232 9600/8/N/1, 2400 baud modem
AUDIO CONNECTORS:
Plug type terminal
INPUT LEVEL:
+10 DBM to -10 DBM user set in 1 db increments
Four stereo inputs, all active, balanced, bridging ( > 50 kOhms)
SIGNAL TO NOISE:
Better than 70 DB below nominal + 8 DBM operating level
METERING:
LCD Average level -61 dB to 0 dB
POWER:
90 VAC to 260 VAC, 50 to 440 Hz
DIMENSIONS:
19” wide standard EIA rack
1.75” high, 11” deep.
