I
-
I
-
Frequency Keys
(iTiE-)
Pressing the
(START]
key puts the instrument into the swept frequency mode,
and allows you to change the start frequency.
This key puts the instrument into sweep mode, and displays the start
and stop frequencies on the FREQUENCY display. The START and STOP
annunciators are turned on when this key is pressed. Pressing
@i7Z7J
makes
the start (lower) frequency the active parameter. Attempting to set the start
frequency above the stop frequency causes the stop frequency to increase.
The start frequency is always coupled to a previously-set CF and Span by the
equation: START=CF
-
SPAN/2.
Associated SCPI Commands
FREQuency:MODE
SWEep
Sets the instrument to sweep mode.
FREQuency:STARt
<num>[suffix]
Sets the
Stan
fiequenq to the
desired value.
Associated 8350 Commands
FA
<num>[suffix]
Sets the sta/t
frequency
to the
desired value.
OFFSET
When this function is selected (by pressing
(sHlFTl
(START))
the
frequency offset becomes the active parameter displayed in the
MARKER/SWEEP/STATUS area. If the offset frequency is not zero, the
OFFSET annunciator is turned on. The values of frequency shown in the
FREQUENCY display are in accordance with the equation:
Displayed Frequency
=
(Actual RF Frequency
*
Multiplier) + Off set
The frequency offset is displayed in the format Of f’s=<=
ign><d
is2
it.
s>
<unit.s>.
Units can be
kHz,
MHz or
GHz.
A positive
(+)
or negative
(-)
value can be entered. Frequency offset can be turned off by selecting
LSHIFT)
OFFSET
again, or by setting the offset to 0 Hz.
11-4
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General