Infrared Emitter Specifications

WIR TX75 Two-Channel Infrared Transmitter

Model WIR TX75-S (Slave)

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

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

Slave Coverage Area	Note: Slave emitter cannot be used without a master transmitter, but if the slave emitter is aimed so that its coverage area does
(minimum, 1-ch mode):	not overlap that of the master, on its own it will provide:
	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)

Master + Slave Coverage Area	If slave transmitters are aimed to maximize coverage area (so that their coverage areas minimally overlap that of the master):
(minimum, 1-ch mode)	10,000 sq. ft in single channel mode with the RX22-4, a master and (1) slave transmitter (929 sq. m)
	15,000 sq. ft in single channel mode with the RX22-4, a master and (2) slave transmitters (1,393 sq. m)

Indicators On/Off:	2-position switch turns on/off indicator lights

Signal-to-Noise Ratio:	70 dB, (line input)

Frequency Response:	95Hz to 17.6kHz, -3dB re 1kHz (line input)
	125Hz to 17.0kHz, -3dB re 1kHz (microphone input)

Total Harmonic Distortion:	<1% (1 kHz, nominal deviation, line or microphone input)

From Master Input	8p8c RJ45 connector input provides 48VDC 0.4A power, baseband RF, and a bi-directional RS-485 bus for control and status
	communications.

Slave Extension Cable:	CAT-5e (or better) cable, maximum 100’ length, with RJ-45 8P8C male connector on each end, TIA568B

Slave Status Indicators	Green: Power/Unit Status
(on “to slave” jacks):	Yellow: Transmit/Cable Status

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: Specifications subject to change without notice.

Visit our website for the latest specifications and publications: www.williamssound.com

MAN 166C