2606B System SourceMeter® Instrument Reference Manual
Appendix B: Calibration
2606B-901-01 Rev. B / May 2018
B-5
Test considerations
When performing the verification procedures:
•
Be sure to restore factory front panel defaults as outlined above.
•
Make sure that the test equipment is properly warmed up and connected to the 2606B output
terminals (use 4-wire sensing for voltage).
•
Make sure the 2606B SMU is set to the correct source range.
•
Be sure the 2606B SMU output is turned on before making measurements.
•
Be sure the test equipment is set up for the proper function and range.
•
Allow the 2606B SMU output signal to settle before making a measurement.
•
Do not connect test equipment to the 2606B SMU through a scanner, multiplexer, or other
switching equipment.
The maximum common-mode voltage (voltage between LO and chassis ground) is 250 VDC.
Exceeding this value may cause a breakdown in insulation, creating a shock hazard that
could result in personal injury or death.
The input/output terminals of the 2606B System SourceMeter
®
instrument SMUs are rated for
connection to circuits rated Measurement Category I only, with transients rated less than
1500 V peak above the maximum rated input. Do not connect the 2606B terminals to CAT II,
CAT III, or CAT IV circuits. Connection of the 2606B terminals to circuits higher than CAT I
can cause damage to the equipment or expose the operator to hazardous voltage.
Hazardous voltages may be present on all output and guard terminals. To prevent electrical
shock that could cause injury or death, never make or break connections to the 2606B while
the instrument is powered on. Turn off the equipment from the front panel or disconnect the
main power cord from the rear of the 2606B before handling cables. Putting the equipment
into standby does not guarantee that the outputs are powered off if a hardware or software
fault occurs.
Setting the source range and output value
Before testing each verification point, you must properly set the source range and output value.
To set the source range and output value:
1. Press the
SRC
key to select the appropriate source function.
2. Press the navigation wheel to enable the edit mode (EDIT indicator on).
3. When the cursor in the source display field is flashing, set the source range to the range being
verified. Use the up or down
RANGE
keys to select the range.
4. Use the navigation wheel and
CURSOR
keys to set the source value to the required value, and
then press the navigation wheel to complete editing.
Setting the measurement range
When simultaneously sourcing and measuring either voltage or current, the measure range is
coupled to the source range, and you cannot independently control the measure range. Thus, it is not
necessary for you to set the range when testing voltage or