User`s guide

Agilent E6432A Microwave Synthesizer User’s Guide 4-227
HPE6432_SetupFlatnessCalPoint
ViStatus HPE6432_SetupFlatnessCalPoint(ViSession
instrumentHandle, ViReal64 *frequency, ViReal64 *power,
ViUInt16 *attenuation);
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 set the frequency, power, and attenuation for the next
calibration point and return the settings to the user.
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.
frequency
Variable Type ViReal64 (passed by reference)
This parameter specifies the frequency for the next correction point.
power
Variable Type ViReal64 (passed by reference)
This parameter specifies the power level for the next correction point.