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6 Advanced Source and Measurement Functions
NOTE
BUS
EXTernal
IMMediate
PIN<n>
170
During the integration period, data log samples are averaged, and the
minimum and maximum values are tracked. At the end of each
integration period the average, minimum, and maximum values are
added to the internal FIFO buffer.
Although the absolute minimum integration period is 102.4
microseconds, the actual minimum varies as a function of the
number of parameters that are being logged. The actual minimum is
102.4 microseconds times the number of parameters being logged at
each interval. Note that you can measure up to 4 parameters with the
time interval resolution set to 20 microseconds, and up t o 8
parameters with the resolution set to 40 microseconds.
102.4 microseconds:
1 parameter (voltage or current)
204.8 microseconds:
2 parameters (voltage+current)
409.6 microseconds:
4 parameters (voltage+min+max+current)
with 20 µs time interval resolution)
409.6 microseconds:
Up to 8 parameters with 40 µs time interval resolution
You can change the time interval resolution. To set the resolution to
20 microseconds:
SENS:SWE:TINT:RES RES20,(@1)
To set the resolution to 40 microseconds:
SENS:SWE:TINT:RES RES40,(@1)
If the specified integration period is at or near the minimum logging
intervals, the data format must be specified as binary. If binary
format is not specified, the data will be in ASCII format and the
minimum logging intervals will typically be up to five times longer
than what can be achieved with binary format.
To set the data format to binary:
FORM[:DATA] REAL
Refer to "Measurement Data Formats" later in this chapter for more
information.
Select the Data Logger Trigger Source
The TRIGger:ELOG command generates an immediate trigger
regardless of the trigger source. Unless you are using this command,
select a trigger source from the following:
Selects GPIB device trigger, *TRG, or <GET> (Group Execute Trigger).
Selects the trigger input BNC connector. Requires a low-true trigger signal.
Selects the immediate trigger source. This
when initiated.
Selects a pin on the digital port. <n> specifies the pin number. The pin must be
configured as a Trigger Input to be used as a trigger source (see Appendix C).
triggers the data logger immediately
Model N6705 User's Guide
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