The Agilent 816x VXIplug&play Instrument Driver Lambda Scan Applications
238 Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition
2If the Step Size is too small and results in a trig ger frequency that is to
high for the installed Power Meters, the error "cou ld not calculate a
sweep speed!" will be returned. Increase the Step Size.
3If the chosen wavelength range is too large and Step Si ze is too small,
the error "too many datapoints to log!" wil l be returned. In this case,
reduce the wavelength range and/or increas e the Step Size.
The Get Lambda Scan Parameters Function
The Get Lambda Scan Parameters
(hp816x_getLambdaScanParameters_Q) function returns all parameters
that the Prepare Lambda Scan (hp816x_prepareLamb daScan) function
adjusts or automatically ca lculates.
The Execute Lambda Scan Function
The Execute Lambda Scan (hp816x_executeL ambdaScan) function runs
and returns the results of a Lambda Scan operation.
That is, it executes an operation whe re a Agilent 8164A /B Lightwave
Measurement System with a back-loadable Tunable Laser modul e and up
to four Power Sensors installed , performs a wavelength sweep where the
Tunable Laser module and Power Sensors are coordinate d with each
other.
The Prepare Lambda Scan (hp816x_prepareLambd aScan) function must
be called before a Lambda Scan operation is executed. Use the return
values of this function (Number of Datapoints and Number of Power
Arrays) to allocate arrays for the Execute Lambda Sc an
(hp816x_executeLambdaScan) function.
Equally Spaced Datapoints is enabled as part of this function and cannot
be disabled. Use Multi Frame Lambda Scan i f you need to have inequally
spaced datapoints. See“Equally Spaced Datapoints” on page 236 for more
details.