Watkins-Johnson Company WJ-8711A, Installation, Operation And Maintenance Manual

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RS-232 REMOTE OPERATION WJ-8711A DIGITAL HF RECEIVER
4-10
Table 4-1. Receiver Device Messages
(Continued)
Command Response Description
FRQ nrf
FRQ?
FRQ nr1 Set the tuned frequency in MHz (1-Hz steps).
Range:
00.000000 to 30.000000
Request the tuned frequency.
Reset:
FRQ 20.000000
Default: FRQ 20.000000
Example: FRQ 12.345678
INC nrf
INC?
INC nr2 Select Frequency-to-Frequency (F1-to-F2) scan increment in
kHz.
Range:
0.001 to 25.000
Request current Frequency-to-Frequency (F1-to-F2) scan
increment in kHz.
Example: INC 20.000
Default:
INC 25.000
LCK nrf nrf Enter a lockout to be used in the (F1-to-F2) scan w/Lock
mode. The lockout is specified as a center frequency only.
The lockout width is
±
half of the current IF bandwidth
selection. Once stored, the lockout width remains the same,
regardless of future IF bandwidth changes. The channel
number assigned with this command remains constant as
channels are added or deleted. This lockout data overwrites
any data previously stored in the selected lockout channel.
Field Parameter Range
1 Channel number 0 to 99
2 Lockout center frequency 0.000000 to 30.000000
MUT?
MUT nr1 Request the current mute status.
Range:
0,1
Where: 0 = Audio not muted
1 = Audio muted
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