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Service Information
7957 A/7958A
4-48.
CS/80 No Execution Message Utilities
4-49. Clear Logs
4-50. Preset
MICRO OPCODE
PARAMETERS
OCDH (205)
o =
clear all logs (run time/Fault
log and ERT log)
1
=
clear ERT log only
2
clear EEPROM logs (fault, run time
data error)
Clearing the ERT log clears all ERT entries. Clearing the fault logs clears all log
entries.
MICRO OPCODE
PARAMETERS
OCEH
(206)
none
This command adds the RAM based run time sectors read count to the EEPROM
based sectors read count and stores the total on the maintenance track or in the
EEPROM. The RAM based count is cleared.
If this utility is used before scheduled system shutdowns, a more accurate sectors
read count will be maintained.
4-51. Faults/Errors During Error Rate Testing
4-30
Faults: If a fault is encountered, the ERT is halted and the state of the machine
is saved. QSTAT is set and the status will indicate the fault. The host may
continue the test by sending the ERT command sequence with the loop count set
to zero.
A fault is generated during error rate testing if the ERT log overflows. The host
is allowed to read the ERT log, send the clear ERT log command and then
continue the error rate test by sending the ERT command sequence with the
loop count set to zero.
Errors: If a data error occurs, it will be logged in the ERT log and the test will
continue at the next block. QST AT will be "pass" if only data errors occur.
If no errors have occurred since the last restart of the test, then one byte
(containing a zero) tagged with EOI will be returned to the host upon completion
of the test.
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