VXI VT1433B, User Manual, Page: 126 / 203

Arbitrary Source Description
An arbitrary source can be included with the VT1433B 8-Channel 196 kSamples/s
Digitizer plus DSP as VT1433B-1D4. (It cannot be installed with a Tachometer
Option, VT1433B-AYF.) The Arbitrary Source Option can supply arbitrary or
sine signals under control of measurement software.
Trigger
The Arbitrary Source can be used to trigger the measurement and to trigger other
modules in the measurement system.
Arbitrary Output
The Arbitrary Source can be programmed to output any signal that is described
by data downloaded by the software.
Source Output Modes
The Arbitrary Source has several output modes including the following:
q
arbitrary
q
sine
q
noise
q
random
q
burst
COLA (and Summer)
The COLA (Constant Output Level Amplifier) output supplies a signal similar to
the Source “Out” output except that it is at a constant output level of about one
volt peak.
The same connector (labeled “COLA”) can also be programmed as a summer
input. A signal connected to this input is summed with the internal source output
to create the final output.
External Shutdown
Shorting the center pin of the shutdown connector to its shield causes the source
to ramp down and shut off.
VT1433B User's Guide
The Arbitrary Source Option
6-2