DNT XLP77, Руководство по обслуживанию

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GENERAL SPECIFICATIONS
Transmitter……………………………………..………………….…….……………...…..CPU Controlled PLL Synthesizer
Receiver…………………………………..……...……….CPU Controlled double conversion, super-heterodyne system
Intermediate Frequency 1
st
………………………….……………………………………………………………….. 21.7 MHz
2
n d
…………………………………………….……………………………………… 450 KHz
Operating Frequencies PMR…………………….….……………...……………………….… 446.00625MHz ~ 446.09375 MHz
LPD…………………………………………………………………..433.07500 MHz ~ 433.77500 MHz
Frequency Stability……………………………………………………………..………………...……………………0.0005%
Battery Life……………………………...………………………………………………………………….…30 hours (typical)
Battery…………………………...………………………………………………….6.0 V DC @ 2200 mA Alkaline Batteries
Transmitter/Receiver Switching……………..….…………………………………………...……………………….Electrical
Ambient Conditions, Temperature / Humidity …………….………………………….………… -15
°
c ~ 55
°
C / 40% ~ 70%
RECEIVER SPECIFICATIONS
Sensitivity ……………………………………………………………………………… 0.354uV or better for 12dB SINAD
Audio Output ……………………………………………………………………………………………………….. 300mW
Frequency Response …………………………………………………………………………………… 300 Hz ~ 2500 Hz
Image Rejection …………………………………………………………………………………..…………………… 54dB
Adjacent Channel Rejection …………………………………………….……………………………………………. 60dB
Inter Modulation Distortion ……………………………………………………………………….…………………. 60dB
Conducted Rx Spurious ………………………………………………………………………..………………….. 54dB
TRANSMITTER SPECIFICATIONS
Output Power(Conducted) …………………………………………..………………………………………………500mW
Max. Deviation PMR ………………………………………………….…………………………………..… ± 2.5 KHz(MAX)
LPD ………………………………………………………………………………………. ± 5.0 KHz(MAX)
Frequency Error …………………………………………………………………….……………………5ppm(-15~+55 )
Current Drain ………………………………………………………………….………………………………….. 400 mA
Spurious Emission(Conducted) …………………………………………………….……………… LESS THAN -43dBc.
Antenna Impedance ……………………………………………………………….……………………………… 50 Ohm
PMR Frequency Chart
Channel Frequency (MHz) Channel Frequency (MHz)
1 446.00625Mhz 2 446.01875Mhz
3 446.03125Mhz 4 446.04375Mhz
5 446.05625Mhz 6 446.06875Mhz
7 446.08125Mhz 8 446.09375Mhz