Instructions

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C=M1 sets the centre frequency to the Marker 1 frequency.
C=Pk sets the centre frequency to the frequency of the peak amplitude
within the current span.
Step Up/Down changes the centre frequency by the step value as set by
the Step Size function from the Frequency/Span menu.
4.3.2 Frequency/Span > Span
Pressing Span changes the top line annotation to Centre/Span if it was previously
Start/Stop. The five keys on the bottom row enable the span of the sweep to be
changed:
Set Span brings up a numeric keyboard from which the desired span can be entered
in MHz to a resolution of 0.001 (1kHz). Pressing Set by ‘Tab/Jog’ from this screen
provides an alternative frequency editing mode. Pressing ‘Set by K/B’ from this
screen returns to the numeric keyboard setting screen. Pressing ‘Exit’ returns to the main
Centre menu. The last used mode (K/B or Tab/Jog) is retained.
Set to Mdelta sets the span equal to the frequency difference between the M1 and
M2 markers (if they are both on).
Zoom Out/In increases or decreases the span from its current value in a
1:2:5 sequence.
Zero Span sets the span to zero and enables demodulation to be applied.
See Next Section.
4.3.3 Frequency/Span > Zero Span
Zero Span mode sets the span to zero and changes the swept display to a horizontal line at the
signal level. AM or FM demodulation can be applied to the signal.
Exit Z-Span cancels zero span mode and returns to the normal Span menu - see
Previous Page.
Demod brings up a pop-up menu that enables the modulation type to be selected.
An Audio Filter can also be selected to reduce noise.
Vol Up/Down sets the volume level of the demodulated audio in steps
from 1 to 16.
The audio signal is applied to the internal speaker unless headphones are plugged into the
audio-out socket at the top of the instrument.
4.3.4 Frequency/Span > Start/Stop
Pressing Start/Stop changes the top line annotation to Start/Stop if it was previously
Centre/Span. The five keys on the bottom row enable the start or stop frequencies
to be changed:
Set Start/Stop brings up a numeric keyboard from which the desired
frequency can be entered in MHz to a resolution of 0.001 (1kHz).
Pressing ‘Set by Tab/Jog’ from this screen provides an alternative
frequency editing mode. Pressing ‘Set by K/B’ from this screen returns to the numeric keyboard
setting screen. Pressing ‘Exit’ returns to the main Centre menu. The last used mode (K/B or
Tab/Jog) is retained.
Start=M1, Stop=M2 sets the start and stop frequencies to those of the M1 and M2
markers provided that they are both on.
Set
C=M1
Set
C=Pk
Step
Down
Step
Up
Span
Set
Span
Set to
Mdelta
Zoom
Out
Zoom
In
Zero
Span
Exit
Z-Span
Demod
Volume
Down
Volume
Up
Start
Stop
Set
Start
Set
Stop
Start=M1
Stop=M2