R3132 Series Spectrum Analyzer Operation Manual
3.3.9 FREQ Key (Frequency)
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3.3.9
FREQ Key (Frequency)
Pressing this key displays the FREQ menu and allows you to set the center frequency (or the start frequen-
cy when the start and stop frequencies are displayed). In addition, it displays both the current center fre-
quency and frequency span (or both the start and stop frequencies) in the area below the bottom scale line.
Center
Allows you to set the center frequency, and displays the center
frequency and frequency span in the annotation area below the
bottom scale line.
Start
Allows you to set the start frequency (the frequency furthest to the
left on the frequency axis), and displays the start and stop frequen-
cies in the annotation area below the bottom scale line.
Stop
Allows you to set the stop frequency (the frequency furthest to the
right on the frequency axis), and displays the start and stop fre-
quencies in the annotation area below the bottom scale line.
CF Step AUTO/MNL
Toggles the step size function between AUTO and MNL. This
function is used to change a center frequency using the step keys.
AUTO:
Automatically sets the step size to 1/10 of the fre-
quency span.
MNL:
Allows you to set the step size manually.
Freq Offset ON/OFF
Turns the frequency offset function on or off.
ON:
Sets an offset value and changes only the frequency dis-
play by the offset value.
(Displayed frequency value = Set value + Offset value)
OFF:
Turns the offset function off.
Channel Setting
Displays the CH Setting menu. Allows you to set the channel fre-
quency from the channel table after the input mode has been
changed. The types of data entered by the Center, Start and Stop
keys vary depending on the input mode.
Frequency Input
Displays the Frequency Input dialog box.
Input Type
Input Type can be switched to the center frequency, starting fre-
quency or stop frequency.
Frequency:
Sets the input type to normal frequency mode.
CH Type 1:
Sets the input type to CH Type 1 mode which allows
you to set the center frequency using a channel number
(with the FREQ key) or a frequency (with the Center
key).