8 - Manual setup
Sequence mode
74
SMU4000 Series Instruction Manual
Timing
When adding a setup to a sequence, the parameters of that setup will control the timing of the
sequence. See ‘
’ for more details.
When a sequence is running, the SMU checks approximately every 150ms for an event or
condition.
The conditions for the
2
nd
Action
①
are performed/checked in order. For example, if only
Condition 3
③
is set then two cycles (~150ms) will be needed prior checking that condition.
On a jump action after a condition the next step will be enabled after ~150ms.
On repeat, the step will be loaded after ~150ms.
If no conditions are met, the next step will be loaded at the end of the last measurement.
The output will be set to off once the step is complete if it is the final step in the sequence.
If the step contains a list, the time of loading a setup within an active step may be longer
dependant on the length of the list. If the list linked to the setup for the selected step is not
located in the internal memory, the step will fail and the sequence will be terminated.
The previous timings will be altered if a delay is applied as this value will be added on top of the
time between cycles. The output is switched on after the delay is applied.
DIO Logic
Only valid pins will be editable from the DIO Input/output menus. To enable the pin to output or
read a value the DIO Configuration must be set first. This can be set in the DIO Configure menu,
which can be accessed from the Sequence mode menu screen or the Interface menu. Once pins
are assigned as Input or Output, they can be used within the sequence. See ‘
for
more details.
Input pins
Available pins can be selected, only selected pins will be monitored for their active state.
Output Pins
The SMU will set the assigned DIO output pins to either Logic High [5V] or Logic Low [0V] before
the main setup is run. Step 1 can be set High or Low, step 2 onwards can be set to Ignore, High
or Low.
①
②