B-2 Frequently Asked Questions Series 2600 System SourceMeters User’s Manual
2600S-900-01 Rev. A / May 2006 Return to In this Appendix:
How do I optimize performance?
Reference Refer to “Operation considerations” in Section 4 and “Speed” in
Section 6 of the Series 2600 Reference Manual for detailed infor-
mation on performance factors that affect measurement speed and
accuracy.
There are three primary factors that affect measurement accuracy and speed:
• Warm-up – For rated measurement accuracy, allow the Series 2600 to
warm up for at least one hour before use.
• Speed setting – The Speed setting affects both speed and accuracy.
• Auto zero – Auto zero can be disabled to increase speed at the expense of
accuracy.
Setting speed
Press the SPEED key, then choose the setting based on your requirements:
• Choose the FAST setting for the fastest measurements, but measurement
accuracy will be reduced.
• For best accuracy, use the HI ACCURACY setting, but speed will be
reduced.
• To compromise between accuracy and speed, use the MED or NORMAL
setting.
Disabling auto zero to increase speed
In certain measuring situations, disabling auto zero can increase measurement
speed, but accuracy will drift with time. To disable auto zero, select CONFIG >
MEAS > AUTO-ZERO, then set to OFF. To minimize drift with auto zero disabled,
use the ONCE selection just before measuring.
NOTE Visit the Keithley Instruments website at
www.keithley.com for more information on Frequently
Asked Questions.
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