Keithley System SourceMeter 2601B, Reference Manual

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Section 9: Frequently asked questions (FAQs) Series 2600B System SourceMeter® Instrument Reference Manual
9-2 2600BS-901-01 Rev. B / May 2013
How do I optimize performance?
There are three primary factors that affect measurement accuracy and speed:
•
Warm-up:
For rated measurement accuracy, allow the Series 2600B to warm up for at least two
hours before use.
•
Speed setting:
The speed setting affects both speed and accuracy (for more information, see
Setting speed (on page 2-88)).
•
Autozero:
Autozero can be disabled to increase speed at the expense of accuracy (for more
information, see Disabling autozero to increase speed (on page 9-2)).
Disabling autozero to increase speed
Disabling autozero (setting it to OFF) can increase measurement speed. If autozero is disabled,
accuracy will drift with time and temperature.
Turning autozero OFF will disable the autozero function and possibly increase measurement speed.
To minimize drift, setting autozero to ONCE will perform an autozero operation one time (at the time
when it is selected), and then disable the autozero function.
For a more detailed discussion of autozero, see the Autozero (on page 2-31) topic.
To configure autozero from the front panel:
1. Press the
CONFIG
key, and then select
MEAS
from the menu.
2. Select
AUTO-ZERO
, and then press the
ENTER
key or the navigation wheel .
3. Select the desired mode (
OFF
,
ONCE
, or
AUTO
), and then press the
ENTER
key or the
navigation wheel .
4. Press the
EXIT (LOCAL)
key as necessary to return to the normal display.
Refer to the Remote command autozero (on page 2-32) topic for details about configuring autozero
from a remote interface.
How do I upgrade the firmware?
For information about upgrading the firmware, see Upgrading the firmware (on page A-4).
How do I use the digital I/O port?
For information about the Series 2600B digital I/O port, see Digital I/O (on page 3-83).