User`s guide

4-236 Agilent E6432A Microwave Synthesizer User’s Guide
HPE6432_WriteFlatnessCalData
ViStatus HPE6432_WriteFlatnessCalData(ViSession
instrumentHandle, ViInt32 signalPath);
Purpose
There are six associated functions used to produce output power level
correction values. This function is one of the six associated functions
and is used to specify a particular signal path, validate that a complete
calibration has been completed for the signal path, and writes flatness
correction data from the VXIplug&play driver’s internal memory table
to the synthesizer’s FLASH memory.
Because output power level can vary over the synthesizer’s frequency
range and attenuator settings, correction values can be produced and
applied to the output power level so that it is essentially “flat”.
Once output power level correction values have been produced and
applied, the synthesizer can be programmed to any frequency from
10 MHz to 20 GHz and attain power level accuracy:
❏❑better than +/– 1.5 dB (over the full attenuator range)
❏❑better than +/– 1.0 dB (at a fixed attenuator setting)
These levels of output power level accuracy allow for all measurement
uncertainties and variations over temperature. The actual
performance achieved with the same power measurement device at a
single temperature and at any frequency (from 10 MHz to 20 GHz)
typically will be less than +/– 0.1 dB.
For complete specifications, refer to “Specifications and
Characteristics” on page 6-1.
Parameter List
instrumentHandle
Variable Type ViSession
This is the ViSession handle that is obtained from the Initialize
function. The instrumentHandle identifies a particular instrument
session.
signalPath
Variable Type ViInt32
This parameter specifies the signal path to be calibrated.