HP 8924E, Сборка

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Chapter 2, Troubleshooting
Further Isolating RF Failures
N:\mkt\MANUALS\HP8924C\ALR\trouble.fb
To isolate an RF Analyzer problem:
• On the Test Set:
• Press PRESET.
• Press the SHIFT key, then press the TESTS key to access the CONFIGURE screen.
r Set the
RF Display
field to
Freq
.
r Set the
RF Offset
field to
Off
.
• Locate the ANLG SCRNS (Analog Screens) group of keys and press the TX TEST
key (to go to the analog TX TEST screen).
r Set the
Tune Mode
to
Auto
. This enables the Test Set to automatically tune
the receiver to a strong RF signal.
r Set the
Input Port
to
RF IN
.
• On the external RF signal generator:
• Set the frequency to 100 MHz CW.
• Set the amplitude to 0 dBm.
• Connect the output to the Test Set’s RF IN/OUT connector.
• Set the RF signal generator frequency to 100, 500, and 900 MHz. For each frequency,
the Test Set’s measurements should read as follows:
• TX POWER should read approximately 0.001 W for each frequency.
• TX FREQUENCY should read 100, 500, and 900 MHz respectively.
• Press the SHIFT key, then press the RF GEN key to access the analog Spectrum
Analyzer. Observe the level and frequency of the signal. Press PREV to return to
the TX TEST screen.