14
WIR TX75 Two-Channel Infrared Transmitter
MAN 166C
Infrared Transmitter Specications

Model WIR TX75 (Master)

Dimensions, Weight: 10.0" W (25.4 cm) x 3.1" D (7.9 cm) x 1.5" H (3.8 cm) w/o faceplate or 2.5" H (6.4 cm) w/faceplate, 0.6 lbs (0.3kg)
Color: Black with silver colored silk screen and silver colored faceplate
Optional: white colored faceplate
Power Supply: Desktop style international power supply with IEC line cord, 100-240 VAC input, 50-60Hz, 24W; 48VDC output
DC Power Input: 2.5mm ID barrel connector, 48 VDC, 0.4A center positive
Power Indicator: Green LED
Sleep/Power Save Mode: Shuts off carrier when no audio is present for 3 minutes
Modulation: FM Wideband, ±50kHz deviation max, 50 μS pre-emphasis
Carrier Frequencies: TX-75: 2.3MHz (Ch1) and 2.8MHz (Ch2).
TX-75b: 3.3MHz (Ch1) and 3.8MHz (Ch2).
Default at power on = carriers off. Carriers are automatically enabled upon presence of audio.
Emitter IR Power: 0.7 W
Master Only Coverage Area
(minimum, 1-Ch mode):
5,000 sq. ft in single-channel mode with the RX22-4 receiver (464 sq. m)
3,000 sq. ft in single-channel mode with the RX15-2 receiver (279 sq. m)
2,000 sq. ft in single-channel mode with the RX18 receiver (186 sq. m)
Audio Inputs / Controls: Line inputs: RCA jack for Ch1 and Ch2 accept line level, balanced or unbalanced audio
Line in balanced/unbalanced switch: selects balanced or unbalanced line level audio for RCA jacks
Microphone input: 3.5 mm, stereo jack with signal and bias connected to tip, electret microphone compatible (4 VDC bias supply with 2.7k ohm
series resistor)
Microphone gain adjust: Rotary potentiometer
Microphone channel switch: selects microphone input to Ch1 or Ch2
Audio indicators: Yellow LED blinks at nominal audio level. One per channel
Indicators On/Off: 2-position switch turns on/off indicator lights
“to slave” Output/Input: (2) 8p8c RJ45 connectors output 48VDC 0.4A power, baseband RF and a bi-directional RS-485 bus for control and status
communications
Slave Status Indicators
(on “to slave” jacks):
Green: Power/Unit Status
Yellow: Transmit/Cable Status
Signal-to-Noise Ratio: 70 dB, (line input)
Frequency Response: 95Hz to 17.6kHz, -3dB re 1kHz (line inputs)
125Hz to 17.0KHz, -3dB re 1kHz (microphone input)
Total Harmonic Distortion: <1% (1 kHz, nominal deviation, line or microphone input)
Operating Requirements: 0-50° C (32°-122°F)
Mounting Kit: Wall or Ceiling mount: BKT 024 Omnidirectional mount
Optional: slave linking bar (MLB 003)
Warranty: 2 Years
Approvals: CE, C-tick, FCC, Industry Canada, WEEE, RoHS, CB Scheme
Compatible Receivers: WIR RX22-4, WIR RX18, WIR RX15-2

NOTE: Specications subject to change without notice.

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