HP 53131A Operating Manual page 136

Chapter 2 Operating Your Universal Counter
Using the Utility Menu
There are 13 choices for the TEST: menu item. They are listed and
described in the following text.
TEST: ALL? — run all tests, except display, keypad and printer tests.
DISP? — illuminate the indicators and vacuum-fluorescent
display (VFD) segments. Note, this test is not available
if TEST LOOP: is ON. TEST LOOP: must be OFF.
CPU? — test processor(s).
ROM? — checksum the ROM.
RAM? — test RAM.
EEPROM? — checksum the EEPROM, which is used for non-volatile
memory.
HP-IB? — test HP-IB chip.
QSPI? — test serial hardware control loops.
FPGA? — internally measure the timebase to test count
circuitry.
FR END? — check front end circuits, either by swinging trigger
levels (during power on test and ALL test) or asking
you to connect the timebase output to channels 1 and 2
using a BNC-T connector to split the signal.
MEAS? — make a measurement, either by swinging trigger
levels (during power on test and ALL test) or asking
you to connect the timebase output to channel 1.
INTERP? — test interpolators.
KEYPAD? — request user to press all keys. Note, this test is not
available if TEST LOOP: is ON. TEST LOOP: must be
OFF.
PRINT? — send three test lines to a printer via the RS-232. If in
talk-only, also send three test lines to a printer via the
HP-IB.
2-60 Operating Guide