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Model 5344S
Operation and Programming
3-59.
HEWLETT-PACKARD
R¥
PLUG-INS
3-60.
Most Hewlett-Packard 86200 and 83500 series sweeper plug-ins use one of the following
techniques to generate the output signal.
1.
Yttrium-Iron-Garnet (YIG) Tuned Oscillator (YTO)
2.
YTO and fixed frequency Cavity Oscillator
3.
YTO and a GaAs FET Doubler
4.
YTO and a YIG Tuned Multiplier (YTM)
5.
A combination of the above
3-61.
The following paragraphs provide descriptions of typical plug-ins, and describe basic
block diagrams. The blocks indicate specific plug-ins that use a technique, but certain sections of
the block are deleted.
3-62.
Basic YTO
3-63.
The basic YTO plug-in, as shown in
Figure 3-1
, generates frequencies over a single band.
The YTO is voltage controlled over (for example), the range of 5.9 GHz to 12.4 GHz. The YTO
output is fed to the front panel of the plug-in, possibly through an amplifier, as the RF OUT. An
FM input on the rear panel allows external voltages to be used to vary the YTO frequency over a
small range.
3-6
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