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The receive frequency is NOT the centre frequency of display but is equal to the START frequency, a
pair of ‘outline triangle legends’ (above and below the graphical start frequency) indicate the receive
frequency.
CHANL mode is confirmed by the legend “OP.MODE : CHANL” on the LCD. To return to a standard
spectrum analyser display press
SPECT
Reprogramming channel scope mode: Next time channel scope mode is used, the previous
parameters will be employed unless they are redefined using the “FREQ” key of menu 4 (which replaces
the menu item “CF” while using channel scope mode).
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NOTE: Please refer to section 5-4 for specific instructions for channel scope mode operation.
Select menu 4... selecting centre frequency, span and resolution
4 PREV CF SPAN RBW - NEXT
If using step resolution mode:
4 PREV CF STEP RBW - NEXT
If using channel scope mode:
4 PREV FREQ - RBW - NEXT
If using “Other” companion radio:
4 PREV CF SPAN RBW FDIR NEXT
To input the required centre frequency when in spectrum “SPECT” or step resolution “STRES”
modes, press
CF
Input the required frequency using MHz format then press
.
This becomes the centre frequency of the LCD and the frequency which is monitored by the companion
radio. To abort the frequency input menu press
ESC
, to correct a mis-key press
BS
which will act as
a back-space.
The LCD legend “CF : 123.456” (with your frequency input selection) confirms operation and initially the
marker frequency (legend “Marker”) will equal the centre frequency.
Adjacent frequencies above and below the centre frequency will be displayed as a spectrum, the span
and step size will be as defined by ‘STEP in menu 2’, ‘SPAN of menu 4’ and ‘SPECT / STRES of
menu 3’.
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Note: The centre frequency must be within the tuning range of the companion radio, in the case of
the AR5000 this is between 10 kHz (0.01 MHz) and 2600 MHz.
To change the total displayed bandwidth in spectrum mode, press
SPAN
In step resolution mode
this key is labelled “STEP” and in channel scope mode it is blanked. Key in the required total bandwidth
using kHz format (the maximum bandwidth is 10000 kHz (10 MHz) followed by
Section 5-1
