Anritsu S113C Betriebsanweisung PDF herunterladen (Seite 81)

Trace Overlay

The Site Master can be used to compare frequency spectrums.

Example:

Step 1. Reset the Site Master to the factory default settings if a known starting state is

desired.

If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF

key. If the unit is already on, press the RECALL SETUP key on the data key-

pad. When the key is pressed, a Recall Trace selection box appears on the dis-

play. Select setup location 0 to recall the factory preset state.

Step 2. Connect a signal source to the Anritsu Site Master spectrum analyzer.

Step 3. Set the signal source frequency to 900 MHz and the signal level to –20 dBm.

Step 4. Set the center frequency at 900 MHz, resolution bandwidth to 30 kHz, video

bandwidth to 300 Hz, and the span to 20 MHz.

Step 5.

Press the SWEEP key and select the

TRACE soft key.

Step 6. Select the

A ® B soft key to save the current runtime trace to the Trace B buffer.

Step 7. Set the input frequency to 901 MHz and the signal level to –20 dB.

Step 8. Press the

TRACE B soft key to go to the Trace B menu.

Step 9. Select the

VIEW B soft key to view the traces simultaneously.

NOTE: Trace A is displayed as a black trace and Trace B is displayed as a gray

trace. Some adjustment of the display contrast (see page 2-5) may be required

for optimal viewing.

Figure 5-5 shows the resulting display. Note that the title bar shows both traces.

5-9

Chapter 5 Spectrum Analyzer Measurements

Figure 5-5. Trace Overlay

SgLabs

www.sglabs.it

tel. +39 0755149360

SgLabs

www.sglabs.it

tel. +39 0755149360

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Anritsu S113C Betriebsanweisung Seite 81