Calibration
Overview of 6100B Signal Generation 7
7-7
Table 7-5. Calibration Methods
Measurement Fluke Method Alternative Method
System control
Custom Microsoft Windows
application
Manual control or custom
automation
Sampling
Fluke HP3458A/HFL with
memory extension option in DC
sampling mode.
Sampling measurement device
with appropriate analysis
software
Voltage amplitude
transducers
AC voltage divider set with
small, known phase
displacement errors
AC voltage dividers as required
Current amplitude
transducers
A40B ac current shunts with
small, known phase
displacement errors
A40B ac current shunts as
required
Voltage to phase
reference signal
phase angle
Derived from voltage amplitude
measurements
Custom design or use voltage to
current phase measurement
Current to phase
reference signal
phase angle
Derived from current amplitude
measurements
Custom design or use voltage to
current phase measurement
Voltage to current
phase angle
Derived from angles with
respect to phase reference
Clarke-hess model 6000 phase
meter or similar plus suitable
shunts
7-13. Overview of 6100B Signal Generation
An overview of the 6100B signal generation system will aid further discussion of the
Fluke method of calibration.
An Electrical Power Standard system consists of a 6100B to provide a single phase of
voltage and current, plus up to three 6101B auxiliaries. The voltage and current channels
are independent of each other for amplitude but are linked by a common internal “Phase
Reference” signal. Calibration adjustment of 6100B phase at manufacture is implemented
independently on voltage and current channels by referring them to the Phase Reference.
An understanding of the way the 6100B generates its output signals will aid discussion of
calibration methods.
7-14. Independence of 6100B and 6101B
Adding up to three 6101B Auxiliary units provides additional phases. Each 6101B
Auxiliary stores its own calibration constants but is configured and calibrated via a
6100B. The 6100B Master unit provides its Phase Reference signal to its 6101B
Auxiliaries thus linking the phase of all output channels.
Because the phase of all signals is derived from the same, common Phase Reference, the
calibration of a 6101B Auxiliary unit is independent of the 6100B Master unit controlling
it.
The following describes the 6100B (L1) voltage channel. Unlike all other channels, the
phase angle on the L1 voltage channel cannot be altered from zero except in calibration
mode.
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