Coupling Power Between Channels 1 and 2

the fundamental on channel 1 and the harmonic on channel 2. D2/Dl to D2 ratios the two,

showing the fundamental and the relative power of the measured harmonic in dBc You must ,.,.: . . . ......... .,.,.,,. ,.: _; * ,. ,...;,s_..,.,...%.......:(......

uncouple channels 1 ad 2 for this measurement, using the :gfJwm ~~.~~.~~i~~~. s&key set

to OFF to 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). ii.~~~~~.~~~~~~~~~~~~~

allows you to

. . i . . . . . . . s..w cc:.: i../ i

 

change the power of 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 HP 87533 Option 006. Table 6-9 shows the highest fundamental frequency for maximum frequency and harmonic mode.

‘lhble 6-9. Maximum Fundamental Frequency using Harmonic Mode

HarmolliC

I Measnred

bhximum Fundamental Frequency

HP 876IE

HP 875i)E

Accuracy and input power

Refer to Chapter 7, “Specifications and Measurement Uncertainties. n The maxims recommended input power and maximum recommended source power are related specifications.

Using power levels greater than the recommended values, you 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.

6-124 Application and Operation Concepts

Page 405
Image 405
HP 8753E manual To OFF to allow alternating sweeps, Bhximum Fundamental Frequency