Specifications

This approach offers two advantages:
q
It minimizes wear on the more expensive
test set and cable connectors
q
It provides a simple solution to measuring
non-insertable devices (e.g., a filter with K
female input and output connectors) by
merely swapping the PEA after calibration.
See Figure 7-4
NOTE
In this and other discussions, we will talk
about “insertable” and “non-insertable” de
-
vices. Insertable devices have an insertable
connector pair (i.e., male input and female
output connectors) and can be measured af
-
ter a through calibration. A non-insertable
device has a non-insertable pair of connec
-
tors. This would be the case if it included fe-
male connectors on both ports or different
connector types on each port. Therefore,
“non-insertables” cannot be connected di-
rectly into the measurement path without
an adapter.
MEASUREMENT MEASUREMENT CALIBRATION
CALIBRATION DISCUSSION
MS462XX OM 7-5
Calibration
Measurement
MF
PEA
USING THE PHASE-EQUAL INSERTABLE
(PEI)
F
MF
MFMF MFMF
DUT
TEST
PORT
TEST
PORT
TEST
PORT
TEST
PORT
PEA
PEA
PEA
M
Figure 7-4. Using Phase-Equal Insertables