4-3 POWER-ON
PROCEDURE
At power- on, the power me ter per forms a brief power-on self test
(POST). After the POST, the in stru ment loads the last used con figu ra -
tion and dis play set tings. If a POST er ror oc curs, in for ma tion and avail -
able op tions will be dis played on the screen.
The following tests are performed during the power-on self test, and
also when the GPIB * TST ? com mand is sent:
Dur ing the power- on self test, only fail ures and warn ings will be dis -
played on the front panel. If all tests pass suc cess fully, no self test in for -
ma tion is dis played.
Fail ure and warn ing messages that can be dis played on the front panel
are:
Flash code csum
Per son al ity csumVola tile RAM
Cal data csum
Non- Vol RAM
Soft ware ver sion - this is only a warn ing
Cur rent Setup
Saved Set ups
Se cure - Mem clear - this is only a warn ing
Dis play
Key board
DSP er ror # - fol lowed by a 4-digit hexa deci mal er ror code
ML2400A OM 4-3
OPERATION POWER-ON PROCEDURE
TEST SEQUENCE POS SI BLE STATUS
Flash EPROM code check sum Pass or Fail
Flash EPROM per son al ity data check sum Pass or Fail
Flash EPROM cali bra tion data checksum Pass or Fail
Vola tile RAM tests Pass or Fail
Non- volatile RAM check sums Pass, Fail
WARN ING - Soft ware ver sion
changed - all non- vol stores re set
Cur rent store failed - cur rent store
re set
Saved store(s) failed - failed store
status changed to not saved
WARN ING - Se cure mode clear
mem ory - all non- vol stores re set
Dis play Pass or Fail
Key board Pass or Fail
Ta ble 4-1 Power- on Self Test
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