Appendix B: Calibration
2606B System SourceMeter® Instrument Reference Manual
B-10
2606B-901-01 Rev. B / May 2018
Voltage measurement accuracy
To perform this test, you set the source voltage, as measured by a precision digital multimeter, and
then verify that the 2606B voltage readings are within required limits.
To verify that the 2606B voltage measurement accuracy is within specified limits:
1. With the power off, connect the digital multimeter to the 2606B output terminals using 4-wire
connections (use the same connections as in the figure titled "Connections for voltage
verification" in
(on page B-9)).
2. Select the multimeter DC volts function.
3. Select the single-channel display mode.
4. Enable the 2606B 4-wire (remote sense) mode:
a. Press the
CONFIG
key and then the
MEAS
key.
b. Select
V-MEAS > SENSE-MODE > 4-WIRE
.
5. Set the 2606B SMU to both source and measure voltage by pressing the
SRC
and then the
MEAS
keys.
6. Make sure the source output is turned on (if off, press the
OUTPUT ON/OFF
control).
7. 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 2606B 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 2606B voltage reading is within the limits given in the table.
Repeat the procedure for negative source voltages with the same magnitudes as those listed in
the table (see below).
8. Repeat the above procedure for the other channel.
Voltage measurement accuracy limits
Source and measure
range
1
Source voltage
2
Voltage reading limits
(1 year, 18 °C to 28 °C)
100 mV
90.000 mV
89.8365 V to 90.1635 mV
1 V
0.90000 V
0.899665 V to 0.900335 V
6 V
5.4000 V
5.39819 V to 5.40181 V
20 V
18.000 V
17.9893 V to 18.0107 V
1
Measure range coupled to source range when simultaneously sourcing and measuring voltage.
2
As measured by precision digital multimeter. Use closest possible value and modify reading limits if
necessary.
Adjustment
The information in this topic is intended only for qualified service personnel. Some of the
procedures may expose you to hazardous voltages that could result in personal injury or
death. Do not attempt to perform these procedures unless you are qualified to do so.
