9-8 Sweep Operation Models 2500 and 2502 User’s Manual
source delay adds 0000.0000 to 9999.9980 seconds of delay. See Section 3, “Source
delay,” to set these delays.
Additional delay for a sweep is available by using the trigger delay. This user-specified
delay (0000.0000 to 9999.9990 seconds) occurs before each SDM cycle (device action) of
the sweep. Thus, the trigger delay is executed before each new source-point in the sweep.
See Section 10, “Trigger model (front panel operation)” and “Configuring triggering,” to
set trigger delay.
Trigger count and sweep points
The trigger count and number of sweep points should be the same or multiples of one
another. For example, with five sweep points and a trigger count of 10, the sweep will run
twice. See Section 10 for details on trigger count.
Performing sweeps
Procedures for the various sweep types are covered below.
NOTE The following procedure assumes that the Model 2500 is already connected to
the DUT as explained in Section 2.
Performing a linear staircase sweep
Step 1. Configure channel.
Configure the Model 2500 for the desired channel as follows:
1. Select the desired source function by pressing SRC1 or SRC2.
2. Set the source level to the desired value.
3. Press MSR1 or MSR2 to select the desired measurement channel, then choose the
desired measurement range.
See Section 3, “Basic Operation,” for more information.
The source level you set becomes the bias level for the sweep. When turned on, the output
will maintain this bias level until the sweep is started. Typically, 0V is used as the bias
level.
If using a fixed measurement range, make sure it can accommodate every measurement
point in the sweep. Otherwise, use auto ranging.
Step 2. Configure sweep.
Configure the sweep as follows:
1. Press SRC1 or SRC2 to select the channel.
2. Press CONFIG then SWEEP.
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