Ten-Tec RX-340 Technical Manual page 74

Hf dsp receiver
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COMMAND DESCRIPTION
Annn
MANUAL AGC ATTENUATION
Selects the amount of AGC Attenuation to use (same as Manual
Gain setting on front panel). Adjusts over 120-dB range, may be set
in any mode. Receiver gain is reduced and AGC threshold is
increased by the number of dB indicated.
Example: 'A30' (Set Attenuation to 30 dB)
B+n.nnn
BFO FREQUENCY +/- 8000 Hz
(B-n.nnn)
Sets BFO-Offset frequency when receiver is in CW mode. BFO is
fixed in sideband and CW1 modes, and not operational in others. In
CW mode, BFO Offset is relative to the receiver's tuned frequency
(which is also the passband center when pass- band tuning is turned
OFF).
Example:
Dn
DETECTION MODE
This command allows setting the receiver detection mode.
Detection mode designators are:
1 AM
2 FM
3 CW (with variable-offset BFO)
4 CW1 (BFO fixed at 0 Hz)
5 ISB (both sidebands, 3.2 kHz fixed BW)
6 LSB
7 USB
8 SAM (Synchronous AM)
Example:
E [U,L,B,M]
AUDIO / IF SELECT
Allows Audio/IF selection and receiver muting. Affects the IF
output and audio outputs. Either Upper, Lower, or both ISB audio
channels may be selected for output. Either Upper or Lower IF may
be selected for output. If Both is selected, IF selection remains at
last setting. Also, receiver may be muted by using the 'M' selection.
A receiver which is muted will set the mute flag in the status byte
and display 'Mute' in the Mode area of the main display. The Mode
display may be restored momentarily by pushing either Mode button
(in Remote Mode), return to local mode to clear the mute condition
and edit the Mode setting.
Example:
'B-0.2' (Set BFO to 200 Hz)
'B-2.0' (Set BFO to -2000 Hz)
'D3' (Set receiver to CW mode)
'Dl' (Set receiver to AM mode)
'EU' (Select Upper IF and Upper Audio)
'ELEB' (Select Lower IF and Both Audio)
5-4
VALID RANGE
0 – 120 dB
+/- 8000 Hz
1 - 8
E, U or B

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