SoundPlus
®
Infrared System
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, 15 VA
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, +50kHz deviation, 50uS 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 60 dB
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 1:1 or 2:1
Switchable compression gain: Moderate: 16 dB. Max: 33 dB
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:
CH A and CH B Input Level, rotary knobs
Audio Indicators:
CH A and CH B 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 CH A, CH B off
Stereo LED:
Indicates stereo mode
Phones Switch:
Selects CH1 or CH2 for phones when not in stereo mode
MOD 232 Modulator
Fig. 1: MOD 232 Front Panel
