V L F > H F R E C E I V E R S
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R & S E K 8 9 5 / R & S E K 8 9 6
User Manual
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Operating Modes
3.1.3 Operating Modes
The receiver can be operated in the following
six operating modes:
f Manual
f Frequency scanning
f Channel
> fixed channel
f Channel scanning
f Channel scanning with freely programm>
able channel list
3.1.3.1 MANUAL
In the operating mode MANUAL no channel is
set. In manual operation the following mani>
pulations are possible:
f Entry or modification of frequency
f Selection of modulation mode
f Bandwidth selection
f Passband tuning
f Setting of notch filter
f Selection of control type and time
f Entry or modification of BFO frequency
f Programming of scan process
f Selection of special function
f Selection of system function
f Selection of separate function
f Master / slave operation
f Storage into a channel
f Clearing a channel
In the MANUAL mode the different software
levels may be called up without affecting the
receive operation.
For all manipulations with the exception of sys>
tem reset, store and clear, the stored channel
contents remain unchanged.
Complete receiver settings, consisting of fre>
quency, modulation mode, bandwidth, type
and time of control, frequency deviation and
offset, baud rate, polarity, TTY status, DGC
value as well as BFO frequency, can be stored in
a single channel.
3.1.3.2 FREQUENCY SCANNING
Frequency scanning is determined by the
following parameters:
f Start frequency
f Stop frequency
f Step width
f Digital threshold
f Dwell time
f Hold time
The digital threshold determines the point in
time from which the hold time is added to the
dwell time.
As soon as one or several scanning parameters
are altered, a running scanning program is in>
terrupted and the receiver is automatically in
the MANUAL mode of operation (see 3.1.3.1).
The frequency selected last remains set.
6164.0717.02_01
> 3.4 >
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