HP 83481A, User Manual, Page: 35 / 98

The Instrument at a Glance
Return loss Return loss can be tested using a number of dierent test equipment
congurations . Some of these are:
an HP 8153A lightwave multimeter and HP 81534A return loss module
an HP 8702B lightwave component analyzer with the appropriate source ,
receiver and lightwave coupler
an HP 8703A lightwave component analyzer
an HP 8504A precision reectometer
Many other possibilities exist. The basic requirements are an appropriate
lightwave source , a compatible lightwave receiver , and a compatible
lightwave coupler .
Refer to the manuals provided with your lightwave test equipment for
information on how to perform a return loss test.
Typical return loss is better than 20 to 30 dB , and can be better than 40 dB .
F or actual specications on your particular cable or accessory , refer to the
manufacturer .
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