HP Cable Box 8591C manual Stepping through the Measurement, Transmission Measurement Test Setup

C A U T I O N

Making Measurements Using Spectrum Analyzer Mode

Stimulus-Response Measurements

Stepping through the Measurement

There are four basic steps in performing a stimulus-response measurement, whether it be a transmission or reflection measurement: set up the spectrum analyzer settings, calibrate, normalize, and measure.

1.If necessary, perform the self-calibration routine for the tracking generator described in “Performing the Tracking Generator Self-Calibration Routine” in Chapter 2.

2.To measure the rejection of a low-pass filter, connect the equipment as shown in Figure 5-4. This example uses a hlter with a cut-off frequency of 300 MHz as the DUT.

SPECTRUM ANALYZER

RF OU T I NPUl

DUT

LJ

pul18c

Figure 5-4. Transmission Measurement Test Setup

Excessive signal input may damage the DUT. Do not exceed the maximum power that the device under test can tolerate.

3.Activate the tracking generator menu by pressing [AUXCTRL) and Track Gen To activate the tracking-generator power level, press SRC PWR OM OFF until ON is underlined. See Figure 5-5.

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