B-6
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2600S-900-01 Rev. C / January 2008
Appendix B: Frequently Asked Questions
Series 2600 System SourceMeter
Example output:
1.234567e-03, 5.555555e-02, 1.00, 2.362360e-03, 8.888888e-02,
1.00, 2.362368e-03, 1.111111e-01, 1.00
The above output is returned in the following order:
reading1, timestamp1, sourcevalue1, reading2, timestamp2, sourcevalue2, reading3, timestamp3,
sourcevalue3
See Step 3 of “
for more examples on reading the buffer.
How do I stack channels to output higher voltage?
The maximum output voltage of a Model 2601 or Model 2602 channel is 40.4, and the maximum
output voltage of a Model 2611/2612 or 2635/2636 channel is 202V. Higher voltage can be output
by stacking (connecting in series) channels.
Stacking channels requires that all SMU channels (except one) float off earth ground.
shows two Model 2602s configured with the four channels connected in series to output up to
161.6V (40.4V per channel). Additional channels can be added (stacked), but the LO terminal of
any SMU channel in the stack must never exceed 250V with respect to earth ground.
WARNING
The maximum floating (common mode) voltage for a SMU is ±250V.
Exceeding this level may cause damage to the instrument and
create a shock hazard.
Whenever hazardous voltage (
>
30Vrms, 42Vpeak) will be output, a safety shield must completely
surround the DUT test circuit. When using a metal safety shield, it must be connected to a known
safety earth ground and chassis ground.
Reference
See “Floating a SMU” in Section 3 of the Reference Manual for details on floating
SMU channels.