CHAPTER 6: Intrusive Testing
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6.2 Intrusive Testing to a Patch Module DTE
During an intrusive test to a patch module DTE, you can monitor the patch module’s DCE signals through its
MON patch cavity. See
Chapter 4, Monitoring
for more information. You cannot monitor the patch module’s
DTE signals through its MON patch cavity. The patch module’s LEDs are connected to the DCE signals only.
The circuits between the patch module’s DCE and DTE signals are broken. Only the patch module’s DTE
signals are connected to the test module and/or external test equipment. Interactive testing of the DTE signals
is possible using the test module and/or external test equipment.
6.2.1 T
EST
M
ODULE TO
DTE
To connect an intrusive test from a test module to a patch module’s DTE:
1. Connect one end of a test patch cord to the first patch module’s DTE patch cavity.
2. Connect the opposite end of the same test patch cord to test module’s MON patch cavity (see Figure 6-5).
Example of Intrusive Testing from a Test Module
In this example, the test module’s MON patch cavity is connected, via a patch cord, to patch module 3’s DTE
patch cavity. This permits the interactive testing of signals passing through patch module 3’s DTE.
Test Patch-Cord Connection
Shown here is the patch cord connected to the test module MON and the patch module 3’s DCE patch cavities.
Figure 6-5. Test patch-cord connection.
