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Making Measurements

Measuring Conversion Loss

Perform

Normalization

Calibration

Normalization is the simplest type of calibration. The analyzer stores

normalized data into memory and divides subsequent measurements by the

stored data to remove unwanted frequency response errors. This calibration

is used for this measurement to remove the insertion loss error of the IF

flter. Changing the frequency span or number of measurement points will

invalidate a normalization calibration.

Perform the following steps to perform a normalization calibration:

1. Connect the equipment as shown in Figure 3-14, except replace the mixer

with a through cable.

2. Set the following frequency parameters:

(FREQ)

This sets the analyzer frequency range to sweep over the passband of the

hlter

(700 MHz).

Press

(EiKEj

lkwmalize

This stores the filter response passband into memory, and sets up a

normalized trace so that the filter response magnitude is removed from the

measurement.

4. Replace the through cable with the mixer as shown in Figure 3-14.

3-38

Press

IFREQl

Cen%er

1900)

MHz to change the center frequency so that the

mixing product of the mixer is in the passband of the

filter.

HP 8712C User Manual

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