Keithley System SourceMeter 2601B - Page 11

Models 2601B, 2602B and 2604B System SourceMeter Instrument Specifications
Specifications are subject to change without notice
SPEC-2602B Rev. B / February 2014 11 of 13
Reading buffers Nonvolatile memory uses dedicated storage areas reserved for measurement data.
Reading buffers are arrays of measurement elements. Each element can store the
following items:
 Measurement
 Source setting (at the time the measurement was taken)
 Measurement status
 Range information
 Timestamp
Reading buffers can be filled using the front-panel STORE key, and retrieved using the
RECALL key or host interface.
Buffer size, with timestamp
and source setting
> 60,000 samples
Buffer size, without
timestamp and source
setting
> 140,000 samples
System expansion
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The TSP-Link expansion interface allows TSP-enabled instruments to trigger and
communicate with each other. See the figure below.
Each Model 2601B and 2602B has two TSP-Link connectors to make it easier to connect
instruments in a sequence.
 Once source-measure instruments are interconnected through the TSP-Link
expansion interface, a computer can access all of the resources of each
source-measure instrument through the host interface of any System SourceMeter.
 A maximum of 32 TSP-Link nodes can be interconnected. Each source-measure
instrument uses one TSP-Link node
Timing
Timer
Free-running 47-bit counter with 1 MHz clock input. Reset each time instrument power is
turned on. If the instrument is not turned off, the timer is automatically reset to zero (0)
every four years.
Timestamp
TIMER value is automatically saved when each measurement is triggered
Resolution
1 μs
Timestamp accuracy
±100 ppm
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TSP-Link is not available with the Model 2604B.