Specifications

16
4-4 Clear (CLR) key
The clear key (CLR) acts as back-space key to cancel each proceeding key
entry of numeric information (1 to 0, decimal-point) during entry of the start
/end frequency, entry of input sensitivity / trigger level or the marker and
numeration in the calculation mode. Pressing the clear key with no proceeding
key entry will abort the sequence. Pressing A.CLR (FUNC + CLR) will clear all
proceeding numeric entries and end the sequence.
Pressing the clear key (CLR) repeatedly in the calculation mode, marker mode
(except the instantaneous reading) and waterfall display mode will eventually
return operation to the default mode, see below.
4-5 Default mode and clear mode
The SDU5600 is configurable with a wide range of parameters. It is possible to
bring the SDU5600 to the default mode as described in the table by repeatedly
pressing the clear key.
Definition of the default mode
Marker mode Instantaneous reading
Calculation mode None
Waterfall mode No display
Pressing the clear key (CLR) will not affect the proceeding key entry in the
monitoring mode (spectrum analyser mode, step resolution mode, channel
scope mode), frequency span / frequency step, marker frequency and
demodulation mode.
4-6 When the communication with the companion receiver has failed
The SDU5600 will try to re-establish the communication with the receiver for a
couple of seconds. If unsuccessful the SDU5600 will revert itself to the default
mode as 4-5.
Default mode in the monitoring mode
When the communication between the SDU5600 and the companion
receiver has been disrupted while operating in the channel scope mode
the SDU5600 will automatically switch itself from the channel scope
mode to spectrum analyser mode, ending up in the default mode.
Section 4-4, 4-5, 4-6