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Model 2450

Interactive SourceMeter® Instrument Reference Manual Appendix C:

Status model

2450-901-01 Rev. B/September 2013 C-19

Using TSP commands:

reset()

-- Clear the reading buffer

defbuffer1.clear()

-- Clear the status byte

status.clear()

-- Map bit 0 of operational status register to set on trigger

-- model exit (2732) and clear on trigger model enter (2731).

status.operation.setmap(0, 2732, 2731)

-- Enable bit 0 to flow through to the status byte

status.operation.enable = 1

-- Enable the Operational Summary Bit to set the Master

-- Summary Bit/RQS

status.request_enable = status.OSB

-- Configure a simple measurement loop using the trigger model

smu.source.level = 1

smu.source.ilimit.level = 10e-3

-- Configure a simple trigger model to take 10 measurements

trigger.model.setblock(1, trigger.BLOCK_BUFFER_CLEAR)

trigger.model.setblock(2, trigger.BLOCK_SOURCE_OUTPUT, 1)

trigger.model.setblock(3, trigger.BLOCK_DELAY_CONSTANT, 100e-3)

trigger.model.setblock(4, trigger.BLOCK_MEASURE, defbuffer1)

trigger.model.setblock(5, trigger.BLOCK_BRANCH_COUNTER, 9, 3)

trigger.model.setblock(6, trigger.BLOCK_SOURCE_OUTPUT, 0)

-- Start the trigger model

trigger.model.initiate()

-- Instrument will generate an SRQ when done

waitcomplete()

printbuffer(1, defbuffer1.n, defbuffer1)

SRQ on Trigger Model Notify Event

This example shows you how to use the trigger model's Log Event block to generate an SRQ. This

example configures the trigger model to perform a sweep and to repeat that sweep multiple times.

The Log Event block is used to generate events to indicate when a sweep starts and when it ends. An

SRQ is generated each time the sweep ends. This example is most useful when you are gathering

several sweeps of data on a device and you want to notify the controlling computer when each sweep

has completed so it can retrieve the data from the sweep without interrupting the test.

Keithley 2450 User Manual

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