Keithley KUSB-3100, User Manual

Page: 76 / 129

Chapter 4
62
Set Clocks and Triggers
For the A/D subsystem only, specify OL_CLK_EXTERNAL
to select the external clock. The D/A subsystem does not
support an external clock.
Using an
internal
clock?
olDaSetClockSource
Specify OL_CLK_INTERNAL (the
default) to select the internal clock.
olDaSetClockFrequency
Use to specify the frequency of the
internal clock. For the A/D and D/A
subsystems, values range from 30 Hz
to 50 kHz. The driver sets the actual
frequency as closely as possible to
the number specified.
olDaSetClockSource
Specify OL_TRG_SOFT (the default) to select a software
trigger or OL_TRG_EXTRA to select a falling-edge external
digital (TTL) trigger. Only the A/D subsystem supports an
external trigger.
Yes
No
olDaSetTrigger