Atek HP 8753D, Руководство пользователя, Страница: 637 / 677

Preset State
When the 4
PRESET
5 key is pressed, the analyzer reverts to a known state called the factory
preset state . This state is dened in T able 12-3. There are subtle dierences between the
preset state and the power-up state . These dierences are documented in T able 12-4 . If power
to non-volatile memory is lost, the analyzer will have certain parameters set to default settings .
T able 12-5 shows the aected parameters .
When line power is cycled, or the 4 PRESET 5 key pressed, the analyzer performs a self-test
routine . Upon successful completion of that routine , the instrument state is set to the
conditions shown in T able 12-3 . The same conditions are true following a \PRES;" or \RST;"
command over HP-IB , although the self-test routines are not executed.
Y ou also can congure an instrument state and dene it as your user preset state:
1. Set the instrument state to your desired preset conditions .
2. Save the state (save/recall menu).
3. Rename that register to \UPRESET".
4.
Press 4 PRESET 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PRESET:USER .
The 4
PRESET
5 key is now toggled to the
NNNNNNNNNNNNNN
USER selection and your dened instrument state will
be recalled each time you press 4
PRESET
5 and when you turn power on. Y ou can toggle back to
the factory preset instrument state by pressing 4 PRESET 5 and selecting
N NNNNNNNNNNNNNNNNNNNNNN
FACTORY .
Note
When you send a preset over HP-IB , you will always get the factory preset.
Y ou can, however , activate the user-dened preset over HP-IB by recalling the
register in which it is stored.
12-6 Preset State and Memory Allocation