Maintenance & Calibration
89
—Or—
Indicates the instrument contains a fault that is currently being overcome due
to internal redundancy. Note that small percentages of less than 0.1% are
normal and are not cause for concern.
c) Note the numbers displayed during the
LAST INT INP EXT CAL
status
display.
—If—any of the EXT column displays numbers in excess of the
recommended calibration interval in use by your facility, then your 6000
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, then this indicates that 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 (10 seconds typically),
press the
CAL
key.
5. Ensure that shorting plugs or 50
Ω
terminators are fitted on all voltage inputs and
check that all other external input wiring has been removed.
6. Press the
DISPLAY SELECT 3
key (next to the
Input Calibration
display line).
a) The instrument automatically:
Performs an internal test and calibration of its analog and digital circuitry,
Checks and calibrates any DC offsets present in its input circuitry.
b) If any error messages are displayed during this procedure, then this indicates
that an internal fault has been discovered, and corrective action is required.
7. When the
Input Calibration
procedure has been successfully completed (45 to
90 seconds), press the
ENTER
key. This returns the instrument to normal
operation.
8. This concludes the recommended daily maintenance procedures.
External Calibration
Externally calibrate the 6000 family of instruments against certified standards at
yearly intervals. Note that this procedure calibrates the voltmeters for certifiable
amplitude accuracy only. The frequency response characteristics, phase accuracy and
other performance aspects of the 6000-2 and -3 voltmeters are intrinsic to their
design, and are not adjustable. However, you can check these aspects as a
maintenance routine following calibration to verify correct operation.
Summary of Contents for Xitron 6000-2
Page 1: ...USER S GUIDE 6000 2 6000 3 Phase Angle Voltmeters...
Page 2: ......
Page 36: ...36 6000 2 3 User Guide Rev E...
Page 86: ...86 6000 2 3 User Guide Rev E...
Page 94: ...94 6000 2 3 User Guide Rev E...
Page 101: ...Appendix B 101...
