Two-channel infrared modulator – Williams Sound Two Channel Infrared Modulator MOD 232 User Manual
Page 2
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
Size, Weight: 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)
Color: Black epoxy paint with white legends
Rack Mount: 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
Power Supply: 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
Modulation: FM Wideband, +50 kHz deviation, 50 uS pre-emphasis
Carrier Frequency: Channel A: Selectable, 2.3/2.8/3.3/3.8 MHz,
Channel B: Selectable, 2.3/2.8/3.3/3.8 MHz
Signal-to-Noise Ratio: More than 60dB
Frequency Response: 30 to 16,000 Hz, +1 dB, -3 dB, electrical response
Total Harmonic Distortion: Less than 2%, electrical response
Audio Processing: Compression (slope) adjustable from 1:1 or 2:1
Switchable compression gain: Moderate: 16dB. Max: 33dB
Auto Carrier Shut-Off: 15-minute timer shuts off carrier when no audio is present (can be disabled)
Power Switch: Two-position push button, ON/OFF
Power Indicator: Green LED
Audio Level Controls: CHA and CHB Input Level, rotary knobs
Audio Indicators: CHA and CHB Audio Level, 10-segment LED’s
Carrier LEDs: 4 green LED carrier “on” indicators per channel (indicates frequency, malfunctions)
Compress Control: 1:1 or 2:1
Input Mix LED: Indicates inputs A and B audio are mixed and transmitted by CHA and CHB off
Stereo LED: Indicates stereo mode
Phones Switch: Selects CH1 or CH2 for phones when not in stereo mode
Phones Output: 1/4” TRS headphone jack. Accepts stereo, mono and any impedance phones.
Infrared Test LED: IR LED for receiver testing, monitoring and audio signal testing.
MOD 232 Modulator:
MOD 232 Front Panel:
2
Channel Infrared System Modulator
c h a n n e l 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
+
+
+
-
-
-
-
-
-
c h a n n e l 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