Chapter 4
Nonvolatile Configuration
4-2
ni.com
switch S19 to the
OFF
position and set switch S20 to the
ON
position.
Restart the system.
•
In 488-VXI runtime system mode, you can enter NV configuration
mode through the
CONF
command.
The nonvolatile configuration commands must be executed from the
RS-232 port.
The EEPROM is connected to the microprocessor via an I
2
C serial bus.
Because it takes five to ten seconds to write the contents of the memory,
the GPIB-VXI/C creates a copy of the contents of the EEPROM in RAM,
which can be quickly edited. When the editing is complete, the entire
contents of the RAM copy can be written back to the EEPROM.
Notice that some of the changes (such as the pSOS parameters) do not take
effect until the system is restarted. This can be accomplished by the pROBE
commands
IN
or
BO
, by resetting the system, or by cycling the system
power.
The GPIB-VXI/C Nonvolatile Configuration Main Menu
When you enter the NV configuration mode, the GPIB-VXI/C displays the
following menu.
GPIB-VXI Nonvolatile Configuration Main Menu
(C) 1995 National Instruments
================================================
1). Read In Nonvolatile Configuration
2). Print Configuration Information
3). Change Configuration Information
4). Set Configuration to Factory Settings
5). Write Back (Save) Changes
6). Quit Configuration
Choice (1-6):
From the main menu, you can select the NV memory editing function you
want to perform. To select an item in the menu, enter its number at the
prompt. The effect of selecting each item is described below.
Read in Nonvolatile Configuration
The item
Read In Nonvolatile Configuration
reads the contents
of the EEPROM into RAM.
