CDR-3250/80 TECHNICAL MANUAL
Issue 2.2
3-25
000
001
002
003
004
005
FROM CHANNEL
TO CHA
CHANNELS SWEPT
B.
Multi-Band Sweep.
In a multi-band sweep the TO channel is higher than the next higher numerical channel above the FROM channel.
Frequencies between the FROM channel and the next higher odd channel will be swept like the single-band sweep.
However, instead of going back to the FROM channel, the parameters from the next higher even number channel are
used and the sweep continues. The step size contained in each of the even numbered channels in the sweep controls
the amount the frequency is incremented during the sweep of that band. The sweep continues (with each band's
parameters determined by successive even numbered channels) until the frequency would exceed the frequency stored
in the TO channel. When the frequency in the TO channel would be exceeded, the sweep starts over starting with the
frequency in the FROM channel. The sweep continues over and over again until the STOP key is pressed.
MULTI-BAND SWEEP EXAMPLE:
FROM Channel
FROM Ch +1
Next Even Ch
Next Even Ch +1
TO Ch -1 (even)
TO Channel
000
001
002
003
004
005
Frequency = 10.000000
Frequency = 11.000000 23.000000
23.999999
15.000000
16.000000
Step size = 0.050000
Step size = 0.100000
Step size = 0.100000
Sweep starts using the frequency and all other parameters contained in memory channel 000.
When the frequency in channel 001 would be exceeded, the sweep continues using the frequency and all other
parameters in channel 002.
When the frequency in channel 003 would be exceeded, the sweep continues using the frequency and all other
parameters in channel 004.
When the frequency in channel 005 would be exceeded, the sweep starts over again using the frequency and all other
parameters in channel 000.
Frequencies swept = 10.000000, 10.050000, 10.100000, 10.150000, 10.200000, 10.250000, .......10.950000,
11.000000, 23.000000, 23.100000, 23.200000, ....... 23.800000, 23.900000, 15.000000, 15.100000, 15.200000,
15.300000,........15.900000, 16.00000, 10.000000, 10.050000, 10.150000, etc.
NOTE
If the skip flag is set in a particular even numbered channel in the
sequence, the receiver will immediately skip to the next consecutive
even numbered channel.
The receiver will stop on a frequency (for the current dwell time), when the signal exceeds the preset threshold level. If the
signal goes away before the dwell timer has timed out, the receiver will continue the sweep. If the dwell timer times out before
the signal goes away the receiver continues the sweep. If the dwell time is set to zero, the receiver remains on frequency until
the signal falls below the preset threshold level. The operator may offset the threshold level from the value set in the even
numbered channels before starting the sweep. If the frequency in the TO channel is lower than the frequency in the FROM
channel, the receiver sweeps from the higher to the lower frequency.
Courtesy of http://BlackRadios.terryo.org
