Listen Technologies LT-800-150, Руководство пользователя

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4
LT-800 Specifi cations
Architectural Specifi cations
The stationary FM transmitter shall be capable of broadcasting on 32 channels. The transmitter
shall have an SNR of 80 dB or greater. The output power shall be adjustable to quarter, half or
full. Channel tuning shall be capable of being locked. The device shall have an audio
frequency response of 50 Hz to 15 kHz (±3 dB). It shall have two (2) mixing audio inputs and a
mixed signal output. The device shall have the following audio controls: input level, mix level
and an adjustable low pass filter (contour). The device shall have an audio processor that is
capable of automatic gain control and limiting. The Listen LT-800-150 is specified.
*Specifi cations are subject to change without notifi cation
Specifi cations*
Audio
RF Frequency Range 150.8000 MHz - 152.3500 MHz
Number of Channels 6 wideband, 26 narrowband
Number of Simultaneous
Transmitters
6
Frequency Accuracy ± .005% stability 32 to 122º (0 to 50ºC)
Transmitter Stability 50 PPM
Transmission Range Up to 762 m (2500 ft.)
Output Power 100 mW
System Frequency Response 50 Hz - 15 kHz (±3 dB)
System Signal to Noise Ratio SQ enabled 80 dB, SQ disabled 60 dB
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Audio Input 1 Rear panel, one (1) Female XLR and 1/4 in combo connector, balanced, 0 / -55 dBu (line/mic) nominal input level adjustable, -30 /
+21 dBu (line/mic) maximum input level, impedance 20k / 1k ohms (line/mic), phantom power +12 VDC
Audio Input 2 Rear panel, two (2) phono connectors, unbalanced, -10 / +10 dBu nominal input level adjustable,
+30 dBu maximum, impedance 100k ohms
Audio Processing (Process) Compression can be turned on/off. Slope internally adjustable from 1:1 to 4:1. Default 2:1
Contour Cuts and boosts frequencies above 5 kHz
Combined Audio Output (Mix) Input 1 and input 2, mixed output (rear panel), two (2) phono connectors, unbalanced, -10 dBu nominal output level, +15 dBu
maximum, impedance 10 ohms
Headphone Output (Monitor) Front panel, one (1) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu maximum, impedance 10
ohms
Controls &
Indicators
Front Panel Power, Test Tone on/off, Channel up/down, Input Levels, Mix Level, Contour, Monitor volume control
Rear Panel "Input 1 Level, (Line, Mic, Mic-Phantom Power), Input 2 level (-10 / +10 dBu), RF power level (low, mid, high)"
Programming Process on/off, SQ on/off, channel lock
Input1, Input 2, Mix Level VU Indicates Input 1, Input 2, and Mix audio levels; 10 segment LED's (8 green, 2 red)
Processing Indicated by a green LED when on (front panel)
RF Power Indicated on the LCD (low, mid, high)
LCD Display Channel Designation, lock status, RF power level, programming (front panel)
Test Tone Red LED illuminates when test tone is enabled.
Power
Power Supply In line power supply (Listen part number LA-207)
Power Supply Input Input: 100-240 VAC, 50-60 Hz, 0.4 A
Power Supply Output Output: 12 VDC, 1.3 A, 15.6 W
Power Supply Connector Output Connector: 0.02 in (5.0 mm) OD, 0.01 in. (2.5 mm) ID, barrel type
Power Supply Compliance UL, CE, GS, TÜV, RoHS
Physical
Dimensions (H x W x D) 1.75 x 8.50 x 9.13 in (4.5 x 21.5 x 23 cm)
Color Dark Grey with white silk screening
Unit Weight 2.6 lbs. (1.2 kg)
Shipping Weight 6 lbs. (2.7 kg)
Environmental
Temperature - Operation -10 ºC (14 ºF) to +40 ºC (104 ºF)
Temperature - Storage -20 ºC (-4 ºF) to +50 ºC (122 ºF)
Humidity 0 to 95% relative humidity, non condensing