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Installation and Configuration
IEEE-488 Controller Connection
Note: To disable Local Lockout, use the IBIC ibsre0 command in this example.
IEEE-488 Controller Connection
Use an approved IEEE-488 connector and cable when connecting the power
supply's GPIB interface to your IEEE-488 GPIB network. The IEEE-488
connector uses mating connector J8 on the rear panel of the power supply.
Internal PCB Jumper Selections
You can select how you use OVP (over voltage protection) control and TTL
shutdown by changing jumper positions on the GPIB PCB. Refer to the operating
manual for information on how to use over voltage protection and TTL shutdown.
OVP
Over voltage protection (OVP) on the GPIB interface is set at the factory for
Selection
remote software operation. When operating the power supply in remote mode, you
control the OVP trip level using the OVSET software command. If you return the
power supply to local operation by using the GPIB software commands or the by
the front panel LOCAL switch, control of the OVP trip level changes from
software control to the front panel OVP potentiometer. The default OVP trip level
is set as 110% of the power supply's rated output voltage. See Table 2.5, on page
22 for a complete list of remote power ON default settings.
You can isolate the location of OVP control by changing the positions of the Local
OVP Control jumper J65 and the Remote OVP Control jumper J103. The default
jumper settings allow control of OVP to depend on the operating state of the power
supply. By physically changing the jumper settings, you can isolate the location of
OVP control to software control only or front panel control only. Table 2.6, "OVP
24
ibfind GPIB0
ibcmd "?_@\x11"
ibfind "devname"
ibloc
CAUTION
!
If you remove the unit's cover, use proper static control techniques to avoid damage
to static-sensitive components on the printed circuit board.
Address the computer controller
Send commands (UNL, UNT, MTA0, LLO) in
ASCII.
Address the unit (devname or device name as
configured originally with ibconf).
Set unit to local mode.
Operating Manual for GPIB for XHR/XFR Series Power Supply
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