Keithley 2601B Reference Manual

Series 2600B
System SourceMeter® Instrument Reference Manual Section 2:
General operation
2600BS-901-01 Rev. B / May 2013 2-61
SourceMeter
®
instrument configuration
Guidelines
Source voltage with extended current using
parallel SMUs
Maximum Pulsed Signal Levels for Series 2600B:
Model 2601B/2602B/2604B:
18 V with 18 A limit
Model 2611B/2612B/2614B/2634B/2635B/2636B:
4.5 V with 18 A limit
SMU 1 configuration:
Output-off mode:
smuX.source.offmode = smuX.OUTPUT_NORMAL
Output-off function:
smuX.source.offfunc = smuX.OUTPUT_DCVOLTS
Normal output-off current limit:
smuX.source.offlimiti = 1e-3 (default)
The current compliance of SMU 1 (V-source) must be 10% greater
than that maximum programmed current of SMU 2 (I-source)
Current compliance limit (maximum):
smuX.trigger.source.limiti = 10
SMU 2 configuration:
Output-off mode:
smuX.source.offmode = smuX.OUTPUT_NORMAL
Output-off function:
smuX.source.offfunc = smuX.OUTPUT_DCAMPS
Normal output-off voltage limit:
smuX.source.offlimitv = 20
The voltage compliance of SMU 2 (I-source) must be 10% greater
than the maximum programmed voltage of SMU 1 (V-source).
Voltage compliance limit (maximum):
Model 2601B/2602B/2604B:
smuX.trigger.source.limitv = 20
Model 2611B/2612B/2614B/2634B/2635B/2636B:
smu
X
.trigger.source.limitv = 5
For all configurations
• For comparable rise times, the source range and level of
SMU 1 must match the source range and level of SMU 2
• The programmed current and voltage levels for both SMUs
must fall within the same region of the power envelope.
• Placing two voltage sources in parallel is not recommended
• Placing two current sources in series is not recommended
• Think carefully about the appropriate output-off mode
(smuX.source.offmode) and output-off function
(smuX.source.offfunc) whenever changes are made to the
source function. The alternative is to always use the high
impedance output-off mode (smuX.source.offmode =
smu
X
.OUTPUT_HIGH_Z
).
Combining channels in series to output higher voltage
Channels in series can cause hazardous voltage (>30 V RMS, 42 V peak) to be present and
accessible at the Series 2600B output connector. A safety shield must be used whenever
hazardous voltages will be present in the test circuit. To prevent electrical shock that could
cause injury or death, never use the Series 2600B in a test circuit that may contain
hazardous voltages without a properly installed and configured safety shield.

Keithley 2601B Specifications

General

Brand	Keithley
Model	2601B
Category	Measuring Instruments
Language	English