Specifications

NOTE Executing *TST? returns the module to its *RST state. *RST causes the FIFO data
format to return to its default of ASC,7. To read the FIFO for *TST? diagnostic
information and have that data in a format other than ASCII,7, be certain to set the
data FIFO format to the desired format (FORMAT command) after completion of
*TST?, but before executing a SENSE:DATA:FIFO... query or command.
·
The C-SCPI type for this returned value is int16.
·
Following *TST?, the module is placed in the *RST state. This returns many of
the module’s programmed states to their defaults. See page 51 for a list of the
module’s default states.
·
*TST? performs the following tests on the VT1419A and installed Signal
Conditioning Plug-Ons:
DIGITAL TESTS:
Test# Description
1-3: Writes and reads patterns to registers via A16 & A24
4-5: Checks FIFO and CVT
6: Checks measurement complete (Measuring) status bit
7: Checks operation of FIFO half and FIFO full IRQ generation
8-9: Checks trigger operation
ANALOG FRONT END DIGITAL TESTS:
Test# Description
20: Checks that SCP ID makes sense
30-32: Checks relay driver and fet mux interface with EU CPU
33,71: Checks opening of all relays on power down or input overvoltage
34-37: Check fet mux interface with A/D digital
ANALOG TESTS:
Test# Description
40-42: Checks internal voltage reference
43-44: Checks zero of A/D, internal cal source and relay drives
45-46: Checks fine offset calibration DAC
47-48: Checks coarse offset calibration DAC
49: Checks internal + and -15 V supplies
50-53: Checks internal calibration source
54-55: Checks gain calibration DAC
56-57: Checks that autorange works
58-59: Checks internal current source
60-63: Checks front end and A/D noise and A/D filter
64: Checks zeroing of coarse and fine offset calibration DACs
VT1419A Command Reference
Common Command Reference
318 Chapter 6
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