Architectural Specifi Cations - Listen Technologies LR-500 User Manual

LR-500 Specifi cations
The FM receiver shall be capable of receiving on 32 channels. The receiver shall have a SNR of 80 dB
or greater. The receiver shall be programmable to electronically lock out unneeded channels. The
receiver shall be capable of seeking channels locked on an active channel. The device shall have a
squelch. The unit shall have an audio frequency response of 50 Hz to 15 kHz (±3 dB). The device shall
incorporate a stereo headset jack that allows the user to plug in either a mono or stereo headset
and listen to audio normally. The device shall incorporate an LCD display. The receiver shall
incorporate automatic battery charging circuitry. The device shall be able to use of two (2) alkaline
or NiMH batteries. The Listen LR-500-150 is specifi ed.
RF Frequency Range
Number of Channels
Sensitivity
Frequency Accuracy
Antenna
Audio
Squelch
System Frequency
Response
System Signal to Noise Ratio
System Distortion
Output
User Controls
Set-up Controls
(Battery Compartment)
Programming
Controls &
Indicators
LED
Display
Battery Type
Battery Life (Listen Batteries)
Battery Charging (NiMH only)
Power Supply
Power
Power Supply Connector
Power Supply Compliance
Dimensions (H x W x D)
Color
Unit Weight
Physical
Unit Weight with batteries
Shipping Weight
Door
Temperature-Operation
Environmental Temperature-Storage
Humidity
Architectural Specifi cations
Specifi cations*
.6uV typical, 1 uV maximum for 12 dB sinad
± .005% stability 32 to 122 ºF (0 to 50 ºC)
Programmable in 20 steps, automatic on loss of RF signal
<2% total harmonic distortion (THD) at 80% deviation
3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level,
Alkaline/NiMH batteries, SQ enable/disable
Channel lock, squelch, channel lock out
Red, illuminated when unit is on, fl ashes when batteries are low or to indicate charging,
fl ashes when locked and SEEK is pushed
Channel designation,battery level, battery charging,
RF signal strength, programming and channel lock
30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
I/P 120 VAC; O/P 7.5 VDC 250 mA, drop in contact points for use with charging cases,
0.09 in. (2.3 mm) OD by 0.7 mm ID, barrel type connector 7.5 VDC, center positive <250 mA,
drop in contact points for use with Listen charging cases
4.25 x 2.75 x 1.50 in. (10.8 x 7.0 x 3.8 cm)
Manually Lockable (on sides). Up, down, and power buttons through door.
0 to 95% relative humidity, non-condensing
*Specifi cations are subject to change without notifi cation
150.8000 MHz - 152.3500 MHz
6 wide band, 26 narrow band
Uses earphone cable
50 Hz - 15 kHz (±3 dB)
SQ enabled 80 dB, SQ disabled 60 dB
16 mW maximum, impedance 32 ohm
Channel up/down, SEEK, volume
Two (2) AA batteries, alkaline or NiMH
Fully automatic, 13 hours
power supply not included (LA-208)
RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB
Dark Grey with white silk screening
3.9 oz (111 g)
5.8 oz (164 g)
6.1 oz (173 g)
14 to 104 ºF (-10 to 40 ºC)
(-)4 to 122 °F (-20 to 50 °C)
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