8611/SM SIGNAL MONITOR OPTION
APPENDIX A
A-15
Table A-3. 8611/SM Commands (Continued)
Command Function
Description
A5
H
Fixed
Tune
Mode
This command tunes the WJ-9168 to a fixed frequency within its 10 MHz
span range. The device does not sweep. The Signal Strength query
command may be used to measure and report the signal strength while
the WJ-9168 is fixed at the desired frequency. The WJ-9168 has 10 MHz
tuning span, ranging from 16.4 MHz to 26.4 MHz inclusive with 2.5 kHz
tuning resolution, yielding a total of 4001 possible tuning points.
The two-byte binary data field gives the frequency to which the WJ-9168
tunes. Its format is two-byte, MOD 128 (7 bits) each byte.
The most significant bit of each byte is “0”.
DATA FIELD
: Two-byte tune-frequency (MOD 128)
Parameters examples:
0000
H
16.4000
MHz
point
0
0001
H
16.4025
MHz
point
1
•
•
•
•
•
•
•
•
•
007F
H
16.7175
MHz
point
127
0100
H
16.7200
MHz
point
128
•
•
•
•
•
•
•
•
•
1F1F
H
26.3975
MHz
point
4000
1F20
H
26.4000
MHz
point
4001
0F21
H
- FFFF
H
not defined, invalid data.
Example: A5007F
H
- Select the 127th Point in the Spectrum
(16.7175 MHz Fixed Frequency)
A6
H
Signal
Strength
Reports signal strength when the WJ-9168 is not sweeping. The data
corresponds to whatever frequency the WJ-9168 is tuned to at the time.
The reported data is a single byte with the same binary format used in the
data blocks. The WJ-9168 responds with its signal strength data byte
immediately upon receipt (and processing) of the command.
Courtesy of http://BlackRadios.terryo.org
Summary of Contents for WJ-8611
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