Model 2657A High Power System SourceMeter® Instrument Reference Manual
Appendix B: Calibration
2657A-901-01 Rev. B/December 2012
B-13
5. Make sure the source output is turned on (if off, press the
OUTPUT ON/OFF
control).
6. Verify voltage measurement accuracy for each of the voltages listed in the table (see below). For
each test point:
•
Select the correct source range.
•
Set the Model 2657A output voltage such that the digital multimeter reading is the value indicated in the
source voltage column of the table below. It may not be possible to set the voltage source to get exactly
the required reading on the digital multimeter. Use the closest possible setting and modify the reading
limits accordingly.
•
Verify that the Model 2657A voltage reading is within the limits given in the table.
Voltage measurement accuracy limits
Source and measure range*
Source voltage**
Voltage reading limits
(1 year, 18 °C to 28 °C)
200 V
100 V
99.925 V to 100.075 V
180 V
179.905 V to 180.095 V
500 V
250 V
249.838 V to 250.163 V
450 V
449.788 V to 450.213 V
1500 V
750 V
749.513 V to 750.488 V
1350 V
1349.363 V to 1350.638 V
3000 V
1500 V
1499.03 V to 1500.98 V
2700 V
2698.73 V to 2701.28 V
* Measure range coupled to source range when simultaneously sourcing and measuring voltage.
** As measured by precision digital multimeter. Use closest possible value, and modify reading limits
accordingly if necessary. See
Measurement limit calculations
7. Repeat the procedure for negative source voltages with the same magnitudes as those listed.
8. Verify voltage accuracy for high-speed ADC voltage measurements as follows:
a. Select the correct source range.
b. Set the Model 2657A output voltage such that the digital multimeter reading is the value indicated in the
"Source voltage" column of the table below. It may not be possible to set the voltage source to get
exactly the required reading on the digital multimeter. Use the closest possible setting and modify the
reading limits accordingly.
c. Press
the
LOAD
key, then select
FACTORY
.
d. Select
FpVerifyFastAdcV
and then press the
ENTER
key.
e. Press
the
RUN
key.
f.
Verify that the Model 2657A fast ADC voltage reading is within the limits given in the table.
g. Press any key to stop the verification script.
h. Repeat the procedure for negative source voltages with the same magnitudes as those listed in the
following table.
High-speed ADC voltage measurement accuracy limits
Source and measure range*
Source voltage**
Voltage reading limits (1 year, 18 °C to 28 °C)
200 V
100 V
99.850 V to 100.150 V
180 V
179.810 V to 180.190 V
* Measure range coupled to source range when simultaneously sourcing and measuring voltage.
** As measured by precision digital multimeter. Use closest possible value, and modify reading limits
accordingly if necessary. See
Содержание 2657A
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