HP 54750A, User Manual, Page: 400 / 478

The General Function Menus
Utility Menu
The instrument remains declassied until a key is pressed, an HP-IB
command is sent over the bus , a plug-in is changed, or the power is cycled.
When the instrument declassies the memory in the mainframe , the following
actions are performed:
acquisition is stopped.
zeros are placed in RAM memory except for the following nonvolatile
memory locations:
normal mainframe calibration.
normal plug-in calibration (located in the plug-in).
boot and system common variables .
clock memory .
the portion of the display RAM that holds the software for the graphics
processor .
all measurements are turned o.
the default setup condition is stored in all of the setup memories .
the instrument is placed in the default setup condition.
Refer to Chapter 10 for the default setup conditions .
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Declassify frame memory
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Update System
Firmware
The operating system for the instrument is located in the system ROM inside
the instrument. The instrument does not need a disk in the disk drive in
order to operate . The Update System Firmware softkey is for loading new
system rmware into the instrument. Installing rmware is simply a matter
of installing the system disk in the disk drive , then pressing the Update
System Firmware softkey and following the directions on the display .
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Update system firmware
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