I
-
Special Functions
17
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*SECURITY
400 ZERO
FREQ
The *SECURITY selection is a menu of functions that provide you with the
following capabilities:
l Replacing the frequency and marker displays with zeros.
l Clearing and initializing
RAMS
to zeros.
l Disabling the
@
function.
l Blanking the display.
l Locking the front panel keyboard.
When you press
(SHIFT)
SPECIAL
117)
(Hz/s/ENTER_) the security menu is
displayed. The following are descriptions of each of the menu items:
This function allows you to replace the frequency and markers displayed on
the front panel with zeros. Each frequency is displayed as
8.88888889Hz.
If
markers have been set, they are also displayed as zeros. Annunciators, such
as SWEEP and CW, are not blanked.
This function cannot be executed when the instrument is connected to an HP
8757 or when the instrument is speaking 8350 compatibility language. If you
attempt to do so, nothing happens except an error message is displayed.
When you press
[?i?i)
SPECIAL
m
[H
Z/S/ENTER
, the following message is
displayed:
ZERO
Ft-cj?y..z’Et4TEH.
l If you do not want the frequencies zeroed, press
@.
This key takes you
back one level to the
488
ZERO
FREQ
selection.
l If you do want all of the displayed frequencies to be set to 0.00000000 Hz,
press
Cm).
To return the display to show frequencies, either press
[PRESET)
or cycle the
power.
Associated SCPI Commands
SYSTem:SECurity:ZERO ON
Sets the frequenq to zeros.
SYSTem:SECurity:ZERO OFF
Sets the instrument to display
frequenq
15-22
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