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10-20 Triggering

Trigger delay

A programmable delay is available before the Source Action. The Trigger Delay can be

manually set from 0.00000 to 999.99990 seconds. Note that this delay is separate from the

Delay Action of the SDM cycle. The Delay Action is discussed next.

Source, delay, and measure actions

The SDM cycle of the SourceMeter consists of three actions: Source, Delay, and Measure:

SOURCE Action — Any programmed output voltage or current level changes are

performed.

DELAY Action — This programmable delay is used to allow the source to settle before a

measurement is performed. It can be manually set from 0.00000 to 9999.99900 seconds, or

Auto Delay can be enabled. With Auto Delay enabled, the SourceMeter automatically selects a

nominal delay period based on the selected function and range.

NOTE In the :SYSTem:RCMode MULTiple mode, the soak time programmed with

:SOURce[1]:SOAK takes the place of the delay time only during the ﬁrst SDM cycle

after the initial sweep trigger. See Section 17.

MEASURE Action — During this phase of the SDM cycle, the measurement process takes

place. If the repeat ﬁlter is enabled, as shown in Figure 10-10, the instrument samples the

speciﬁed number of reading conversions to yield a single ﬁltered reading (measurement). If

using the moving ﬁlter or if the ﬁlter is disabled, only a single reading conversion will yield a

reading.

CONV

CONV = Reading Conversion

MEASURE

Action

Filter Process

Offsest Comp. Ohms

Autorange

CALC1, CALC2

(Repeat)

gure

easure action

Keithley 6430 User Manual

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