Williams Sound MOD 232 User Manual

Churches • Schools • Auditoriums • Conference Rooms • Theaters

MOD 232

Two-channel Infrared Modulator

The MOD 232 Modulator is designed to operate with the TX9
emitter operating on 2.3/2.8/3.3/3.8 MHz frequency. Each
microprocessor controlled MOD 232 modulator can handle up to
two audio channels. Baseband outputs can daisy-chain two MOD
232 together for four-channel operation. Flexible combination jacks
permit balanced/unbalanced line-level inputs. Carrier frequencies
are controlled by the microprocessor and a frequency synthesizer
for stable frequency control.

INFRARED SPECIFICATION DATA

2 Channel Infrared System Modulator

channel A

microprocessor controlled frequency synthesized

Power

Level

Phones

Ch A

Ch B

Compress

Frequency

(MHz)

1:1 2:1

3.8

3.3

2.8

2.3

9
6
3
0
3
6

9
12
15
18

+
+
+

-

-

-

-

-

-

channel B

Level

Inputs Mixed

Stereo

IR

Compress

Frequency

(MHz)

1:1 2:1

3.8

3.3

2.8

2.3

9
6
3
0
3
6

9
12
15
18

+
+
+

-

-

-

-

-

-

Two-channel Infrared Modulator

MOD 232 Modulator:

Size, Weight:

Color:

Rack Mount:

Power Supply:

Modulation:

Carrier Frequency:

Signal-to-Noise Ratio:

Frequency Response:

Total Harmonic Distortion:

Audio Processing:

Auto Carrier Shut-Off:

MOD 232 Front Panel:

8.5” W x 8.2” D x 1.7” H (21.5 cm x 20.8 cm x 4.4 cm), 3.1 lbs (1.5 kg)

Black epoxy paint with white legends

1/2 rack space wide, 1 rack space high, one or two modulators may be mounted in a single IEC rack space with RPK 005 (single) or
RPK 006 (double) Rack Mount Kits

Wall Transformer, 24 VAC, 50-60 Hz, 15VA

North America: TFP 016, UL/CSA

Europe: TFP 027-01, 2-pin Schuko plug, CE

UK: TFP 027-02, 3-pin UK plug, CE

FM Wideband, +50 kHz deviation, 50 uS pre-emphasis

Channel A: Selectable, 2.3/2.8/3.3/3.8 MHz,

Channel B: Selectable, 2.3/2.8/3.3/3.8 MHz

More than 60dB

30 to 16,000 Hz, +1 dB, -3 dB, electrical response

Less than 2%, electrical response

Compression (slope) adjustable from 1:1 or 2:1

Switchable compression gain: Moderate: 16dB. Max: 33dB

15-minute timer shuts off carrier when no audio is present (can be disabled)

Power Indicator:

Audio Level Controls:

Audio Indicators:

Compress Control:

Infrared Test LED:

Power Switch:

Carrier LEDs:

Input Mix LED:

Stereo LED:

Phones Switch:

Phones Output:

Two-position push button, ON/OFF

Green LED

CHA and CHB Input Level, rotary knobs

CHA and CHB Audio Level, 10-segment LED’s

4 green LED carrier “on” indicators per channel (indicates frequency, malfunctions)

1:1 or 2:1

Indicates inputs A and B audio are mixed and transmitted by CHA and CHB off

Indicates stereo mode

Selects CH1 or CH2 for phones when not in stereo mode

1/4” TRS headphone jack. Accepts stereo, mono and any impedance phones.

IR LED for receiver testing, monitoring and audio signal testing.

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.