Agilent Technologies 8753ET User Manual page 71

Coupling Power Between Channels 1 and 2
D2/D1 toD2 on OFF
the analyzer shows the fundamental on channel 1 and the harmonic on channel 2. D2/D1 to D2 ratios the
two, showing the fundamental and the relative power of the measured harmonic in dBc. You must uncouple
channels 1 and 2 for this measurement, using the
allow alternating sweeps.
After uncoupling channels 1 and 2, you may want to change the fundamental power and see the resultant
change in relative harmonic power (in dBc).
both channels simultaneously, even though they are uncoupled in all other respects.
Frequency Range The frequency range is determined by the upper frequency range of the instrument or
system (3 or 6 GHz) and by the harmonic being displayed. The 6 GHz operation requires an 8753ET/ES
Option 006. Table 1-3 shows the highest fundamental frequency for maximum frequency and harmonic
mode.
Table 1-3 Maximum Fundamental Frequency using Harmonic Mode
Harmonic
Measured
2nd Harmonic
3rd Harmonic
Accuracy and input power Refer to the "Specifications and Characteristics" chapter in the reference
guide. The maximum recommended input power and maximum recommended source power are related
specifications.
Using power levels greater than the recommended values may cause undesired harmonics in the source and
receiver. The recommended power levels ensure that these harmonics are less than 45 dBc. Use test port
power to limit the input power to your test device.
COUPLED PWR ON off
softkey. You can use the D2/D1 to D2 function in harmonic measurements, where
COUPLED PWR ON
Maximum Fundamental Frequency
8753ET/ES
3 GHz
1.5 GHz
1.0 GHz
COUPLED CHAN ON off
off allows you to change the power of
8753ET/ES
Option 006
6 GHz
3.0 GHz
2.0 GHz
Making Measurements
Measuring Amplifiers
is intended to be used with the
softkey set to OFF to
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