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VX4101A MultiPaq Instrument User Manual
Fuses
The VX4101A has 6 fuses that limit the amount of current that each module can
draw from the VXI backplane +5, -5.2, +24, -24, +12, and -12 V power pins.
These fuses protect the module in case of an accidental shorting of the power bus
or any other situation where excessive current might be drawn.
If any fuse opens, the module will assert SYSFAIL* on the VXIbus.
If the +5 V fuse opens, the VXIbus Resource Manager will be unable to assert
SYSFAIL INHIBIT to disable SYSFAIL*.
If any fuse opens, remove the fault before replacing the fuse. Replacement fuse
information is given in Appendix H: Replaceable Parts. Refer to the Separator
page, following page C-10, before performing any service to this product.
IEEE-488 Address
In order to use and program the VX4101A in an IEEE-488.2 environment, you
must know the IEEE-488 address of the module. Different manufacturers of
IEEE-488 interface devices have different algorithms for equating a logical
address with an IEEE-488 address. Consult the operating manual of the
IEEE-488 module being used.
Self-Test
The VX4101A performs an interface self-test at power-on. This test ensures that
the VXIbus interface is fully functional and ready for communication with the
controller and that each instrument is initialized and ready for operation.
Built-In Test is provided by extensive self-tests which can be invoked via IEEE
488.2 and SCPI commands and queries.
The following are highlights of each test performed:
The self-test for the VX4101A MultiPaqtInstrument tests the following
components:
H CPU RAM
H CPU timers, including periodic trigger
H Internal CPU interrupts
H Software triggers
VX4101A MultiPaqt
Instrument Self-Test