HP EPM-442A Manual do Utilizador descarregar pdf (Página 71)

HP4402.book : chapter2.fm 33 Wed Apr 23 15:29:05 1997

Power Meter Operation

Setting Measurement Limits

HP EPM-442A User’s Guide 2-33

Figure 2-8: Limits Checking Results

In this application a swept frequency signal is applied to the input of the

Device Under Test. The power meter measures the output power. The

limits have been set at +4 dBm and +10 dBm. A fail occurs each time the

output power is outside these limits as shown in Figure 2-8.

Checking for Limit Failures

Limit failures are displayed in the appropriate ﬁeld in the measurement

window on the power meter’s display as shown in Figure 2-9.

4 dBm

10 dBm

Amplitude

Frequency

Fail

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HP EPM-442A Manual do Utilizador Página 71