Listen Technologies LA-350 5,56WHWKRVFRSH5HFHLYHU6SHFLÀFDWLRQV, $UFKLWHFWXUDO6SHFLÀFDWLRQ

/5,56WHWKRVFRSH5HFHLYHU6SHFLÀFDWLRQV

$UFKLWHFWXUDO6SHFLÀFDWLRQ

The IR stethoscope receiver shall be capable of receiving on four carriers (2.3, 2.8, 3.3, 3.8 MHz) and the channel shall be displayed on one of four front panel LEDs. The receiver shall be capable of being locked on a channel. The receiver shall be capable of receiving a stereo signal on each of the four carriers. The receiver shall have a SNR of 60 db or greater and have built in squelch control. The device shall have an audio frequency response of

63 Hz to 15 kHz, +/- 3db and shall have distortion of less than 2%. The device shall operate for 30 hours with two AAA alkaline batteries and 15 hours with two AAA NiMH rechargeable

EDWWHULHV7KHUHFHLYHUVKDOOEHFRYHUHGE\DOLPLWHGOLIHWLPHZDUUDQW\7KH/5LVVSHFLÀHG

	Specifications	LR-42
	Carrier Frequencies	Selectable: 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
	Number of Channels	Four (4) selectable channels
	IR Detectors	Two (2) detectors under front IR lens
RF
	Sensitivity	One (1) nW/cm2 at 40 db SNR
	Frequency Accuracy	+/- .005% stability 0 to 50C
	Squelch	Automatic on loss of RF signal (40 db SNR)
	Compliance	FCC Part 15, Industry Canada, CE, RoHS
	** All system specifications are wireless end-to-end
	System Frequency Response	63Hz - 15kHz (+/- 3dB)
	System Signal to Noise Ratio	Mono: >60dB
Audio	(A-weighted)	Stereo: >52dB
	System Distortion	<2% total harmonic distortion (THD)
	Audio Output Jacks	3.5 mm connector unbalanced, mono or stereo headphones
	Audio Output Power	20 mW maximum at 32 ohms
Controls	User Controls	Volume, Power, Channel Select
	Programming	Channel Lock, Auto Seek, Channel Lock-Out, Squelch
Indicators	Unit Power	Indicated by current channel selection LED
	Channel Selection	Red LED illuminates on the current channel selection
	Battery Type	Two (2) AAA alkaline batteries or NiMH battery pack
Power	Battery Life	30 hours alkaline, 15 hours NiMH rechargeable pack
		(LA-364)
	Battery Charging	Fully Automatic with NiMH battery pack and LA-350 charger
	Dimensions (H x W x D)	1.8 x 4.0 x .75 in (46x102x19 mm) Stethoscope Arm length 8 in (203 mm)
	Color	Grey with White Silk Screening
Physical	Unit Weight without batteries	1.75 oz. (49 g)
	Unit Weight with batteries	2.55 oz. (74 g)
	Shipping Weight	8.00 oz. (227 grams)
	Temperature - Operation	-10 C (14 F) to +40 (104 F)
Environmental	Temperature - Storage	-20 C (-4 F) to +50 (122 F)
	Humidity	0 to 95% relative humidity, non-condensing

•Specifications are subject to change without notification.

LR-LALT-Design-8214042/44Guide

87