Ten-Tec RX-340 Technical Manual page 93

Hf dsp receiver
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SPECIFICATION
TEST SETUP
Blocking
Receive frequency 16.408 MHz, preamp OFF.
OFF Tune
Connect a + 15 dBm, 16.208-MHz crystal oscillator
through a step attenuator to a directional coupler input.
Connect the direct output of the directional coupler to
(200 kHz offset
the receiver RF input.
15 dBm typ.
Terminate the forward port of the coupler.
10 dBm min.)
Connect a -40 dBm, 16.408 MHz, 30% AM/1 kHz,
signal generator to the reverse port of the directional
coupler.
Set step attenuator to 50 dB
Set audio analyzer to read AC Level in dBm.
Increase MAGC setting until the AC Level reading
drops by 10 dBm
Reduce attenuator setting until blocking begins (3 dB
drop in AC Level).
RF input level should be:
6-5
TYP.
MIN/MAX
> 15 dBm
10 dBm MIN

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