88
6000-2 & -3 User Guide, Rev E
c)
If any of the
DSP COMM RETRIES
percentages are in excess of 10% then
this indicates that either the environment in exceptionally noisy, or that the
instrument contains a fault which is currently being overcome due to internal
redundancy. Note that small percentages of less than 0.1% are normal and
should not be cause for concern.
d)
Take note of the numbers displayed during the
LAST INT INP EXT CAL
status display. If any of the INP or EXT column displays numbers in excess
of the recommended calibration interval in use by your facility, then the
instrument is overdue for calibration against certified standards. Note that
Vitrek
recommends 1 year, or 365 days
If any of these numbers show “?” or “req”, it indicates the instrument has
“lost” some of its calibration data, and calibration against certified standards
is definitely required.
4. When the
System Status
messages have completed (typically 10 seconds),
press the
Cal
key.
5. Press the
DISPLAY SELECT 2
key (next to the
Internal Calibration
display
line).
a) The instrument will automatically perform an internal test and calibration of
its analog and digital circuitry. If any error messages come up during this
procedure, then this indicates that an internal fault has been discovered, and
corrective action is required.
b) When the Internal Calibration procedure has been successfully completed
(30 to 60 seconds typically), press the
ENTER
key. This returns the
instrument to normal operation.
6. This concludes the recommended daily maintenance procedure.
Procedure with Equipment
This procedure requires the use of either shorting plugs or 50
Ω
terminators on all
voltage inputs of the 6000 instrument. All external input wiring should be removed
during this procedure.
1. Operate the instrument for at least 30 minutes before performing. Verify time.
2. Press the
Cal
key.
3. Press the
DISPLAY SELECT 1
key (next to the
System Status
display line).
Take careful note of the scrolled display messages.
a) If any input(s) are shown as
inactive
or
faulty
then the instrument requires
repair, corrective action is required.
b) If any of the
DSP COMM RETRIES
percentages are in excess of 10% then
this either indicates the environment in exceptionally noisy,
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