Complete Calibration Summary - Agilent Technologies 54751A Manual

Complete Calibration Summary

Calibration What is calibrated
Mainframe Accuracy and continuity
Calibration of the timescale
Plug-in Vertical o set and vertical
Vertical scale accuracy.
Calibration
Dark Dark calibration measures
Calibration the channel o set signal
without any light present
and this value is used in
the extinction ratio
algorithm.
Probe Probe Attenuation
calibration
Channel Skew Calibrates out the small
di erences in delay
between channels. Useful
for looking at timing
di erences between
channels
External Scale Compensates for gain or
loss associated with
external devices
(calibrates vertical scale
to external device)
3-14
Table 3-4. Complete Calibration Summary
Measurements A ected Recommended Interval
All time base measurements Annually at Agilent service
such as rise time, fall time, center or if operating temp
eye width, and jitter. has changed and remains
5

temperature. See service
manual.
Any electrical vertical Perform after any power cycle
measurements such as or once every 10 hours
V , eye height, during continuous use or if
p to p
extinction ratio operating temperature
changes by more than 2
Channels a ected: electrical Before extinction ratio
with O/E converter. Extinction measurements if the vertical
ratio. scale or o set has changed
since the last dark calibration
or after a plug-in vertical
calibration is performed.
Any electrical measurement Whenever a probe is
taken with the probe connected
Multiple channel Before multiple channel
measurements measurements when
measuring timing di erences
between channels.
Any measurement taken Whenever using external
through an external device devices (component or
(component or transducer) transducer)
FINAL TRIM SIZE : 7.5 in x 9.0 in
Utility
4
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Calibrate
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Calibrate frame
C or more from calibration
Utility
4
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Calibrate
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Calibrate Plug-in
C.

Shift
4
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Extinction ratio
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Dark Cal
Electrical Channel Setup
4
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Calibrate
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Calibrate probe
Channel Setup
4
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Calibrate
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Skew
Channel Setup
4
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External Scale
Key Path
5
5
,
Meas eye
5 4 5
5
5
5