User`s guide

Agilent E6432A Microwave Synthesizer User’s Guide 4-47

stepFreqHz

Variable Type ViReal64

This parameter specifies the calibration step size for the external

leveling loop configuration being calibrated. Its value is used in

conjunction with the start and stop frequency values that are also

specified.

The calibration step size is used to determine the actual points used in

the External Modulator Gain Calibration. The smaller the step size, the

more accurate the calibration is for all frequencies, but this enhanced

accuracy is at the cost of increased time for the calibration process. A

calibration step size value of 100 MHz is recommended.

The number of calibration steps is defined by the following equation

and can not exceed 201:

NOTE If other combinations of hardware are being used in the external

leveling loop configuration that do not have an operational range equal

to the external detector being used, their operational range must be

used instead.

Return Value

This return value reports the status of the Generate/Load Ext Freq

Table function.

To obtain further information about the status that is returned, call the

HPE6432_error_message function or refer to “Error-Code and

Fail-Code Messages” on page 3-93.