Agilent Technologies 3000 X-Series Manuale di Servizio Pagina 141

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Service 8
Agilent 3000 Series Oscilloscopes User’s Guide 141
16 Using the Vpp reading, calculate the Vrms value using the following
expression and record it in the “Performance Test Record” on page 144:
For example, if Vpp = 1.20 V:
17 Using the power meter reading, convert this measurement to Volts RMS
using the expression and record it in the “Performance Test Record” on
page 144:
For example, if Pmeas = 3.65 mW:
Figure 61 Signal Generator Waveform
Vpp reading
Vout
1MHz
Vpp
1MHz
22
-----------------------=
Vout
1MHz
1.20
22
----------
1.20
2.828
-------------
424 mV===
Vin
1MHz
P
meas
50×=
Vin
1MHz
3.65 mW 50× 427 mV==
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