Specifications
21
Channel scope mode
The previous page explains the receive frequency operation in the spectrum analyser mode and step
resolution mode. The channel scope mode differs since it does not use the centre frequency (CF),
instead the receive frequency equals the marker position:
Channel Scope Mode - Receive Frequency = Receive Marker position
In addition, by use of the marker receive key MK.F you can track and select any active receive
frequency for monitoring within the frequency band presently shown on the screen.
FUNC + 3 selects
Channel Scope mode
The currently selected centre frequency will become the new START frequency, the CHANNEL
STEP is default 100kHz, the bandwidth is initially selected as 5MHz. You can change the start
frequency, channel step and end frequency... or just press ENT three times to accept the current
defaults.
Use the SDU5600 main dial to select a peak on the display to indicate the presence of an active
channel, press MK.F to receive the new frequency. As you move the main dial again, you will note
that a new yellow-outline marker appears at the current position on the display, this is the receive
marker. You can toggle the display line to confirm RECEIVE MARKER frequency or MARKER
frequency position using the key sequence FUNC + MK.F (MK.R). When RECEIVE MARKER is
selected, a green dot is displayed on the LCD.
The channel scope mode cannot be selected when the companion receiver has been selected as
Other(10M) or Other(45M), or the communications between the SDU5600 and the companion
receiver has been disrupted.
The example of the channel scope mode here displays the following parameters:
Receive marker = 81.3MHz
Receive frequency = 81.3MHz
Marker position = 82.5MHz
Start frequency = 79.0MHz
Channel step = 25kHz
End frequency = 83.0MHz
Receive marker [MK.F] key
In the spectrum analyser mode and step resolution mode press the MK.F key to swap the marker frequency for the
centre frequency (CF). This is convenient if you wish to listen in the marker frequency immediately.
Section 5-2-2