jotron TR-910, Руководство оператора и инструкция по установке, Страница: 18 / 48

2.3 Receiver speci fi ca Ɵ ons
2.3 Receiver speci fi ca ons
Table 12: Receiver speci fi ca ons
Parameter Speci fi ca ons
AM 25 kHz AM 8.33 kHz
Sensi vity, AM@1 μ V/30% pd > 12 dB SINAD (CCITT)
Harmonic distor on < 2 % @ 90 % AM (line output), Typically < 1 %
Signal/Noise > 55 dB @ +10 dBm input, 90 % modula on
E ff ec ve bandwidth
±
10 kHz
±
3.5 kHz
Adjacent channel rejec on
(Adjacent channel selec vity)
Typical
fi gures
> 80 dB > 70 dB
In-band spurious rejec on > 90 dB
Intermodula on a enua on
≥
85 dB
Image frequency rejec on > 110 dB
IF frequency rejec on > 110 dB
Blocking/desensi za on
≥
100 dB @ 1 MHz o ff set, > 110 dB out-of-band signals
Squelch system Combina on of RF level and Carrier/Noise (digital coherent
squelch)
Squelch RF level -5 to +42 dB μ V (-112 to -65 dBm)
Squelch Signal/Noise 5 to 20 dB S/N @ 30 % modula on
Squelch hysteresis Typical 2 - 4 dB
Squelch mute level
≥
70 dB
Cross modula on rejec on > 100 dB @ 1 MHz frequency o ff set
Dynamic range > 125 dB (-110 to +15 dBm input signal)
Audio AGC (AAGC) 30 % to 90 %, < 0.1 dB varia on in output audio signal
AGC range -107 to +15 dBm
AGC a ack me < 40 ms
AGC decay me < 50 ms
Internal speaker ampli fi er 5 W @ 8
Ω
Headset 8 to 32
Ω
, > 100 mW
External speaker ampli fi er 5 W @ 8
Ω
Monitor output 600
Ω
, -46 to 0 dBm @ 90 % modula on, single ended
Permissible RF input level 5 V EMF
18
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Doc. No.: 103614 TR-910 Operator Rev. AB