Agilent Technologies 81591B, User Manual

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Specifications Definition of Terms
16
Agilent 8159xB Optical Switch Modules, Fourth Edition
Definition of Terms
This section defines terms that are used both in this chapter and in
“Performance Tests” on page 23.
Specification: describes a guaranteed product performance that is valid
under the specified conditions. (The confidence level used is 95%, as
recommended by the ISO standard).
Typical value: a characteristic describing the product performance that is
usually met but not guaranteed.
Actuation Cycle
A consecutive transition through all switch-states.
Mea surement principles are indica ted. Alternativ e measurem ent principles of equal va lue are also accepta ble.
Crosstalk
The maximum ratio between the power on a non-selected output port and
the incident power on any input port, expressed in dB.
The cross talk x
i
for any output port i is calculated from:
where:
P
a
= power measured at the end of the two patch cords (see drawing)
P
j
= power measured at the switch output port.
MAX{} is the maximum value over all non-transmitting switch positions
and all input ports.
Figure 9 Crosstalk measurement Setup
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