Commercial patch cords—including Cat 5e/6 and Cat 7 cords—used in Permanent Link testing applications can cause costly false failures by failing a good link and adding unnecessary hours of troubleshooting and repeat testing. The daily wear associated with coiling, uncoiling, and storing cables under rough field conditions causes slow, invisible degradation over time and contributes to Return Loss, which is often the cause of a FAIL.
At Fluke Networks, we put accuracy first. That's why we developed high-performance Permanent Link Adapters instead of using commercial patch cords. Our proprietary technology ensures superior accuracy and stability required for measuring Return Loss, while increasing the accuracy of all other measured test parameters—not just accuracy one time, but accuracy every time— over time.

As you can see in this graph, a commercial Cat 7 SSTP cord has a 10 dB loss after 150 cycles of coiling and uncoiling. This 10 dB degradation causes a good link to fail - and you end up with a false fail. This 10 dB of loss won't occur when you use Fluke Networks' Permanent Link adapter technology - with DTX you get repeatable accuracy you can count on.
PM06 Personality Modules
PM06 is the cabling industry's first centered, shielded test plug. With global industry approval by connectivity vendors, this unique "center plug" certifies link as well as connecting hardware compliance to the Cat 6 standard to achieve an "open" cabling system. Supports all UTP, FTP and ScTP cabling systems.
- Centered TIA/ISO plug
- Shielded - one global solution
- Vendor independent
- Snag-free clip
- End-user assurance of interoperability
- Designed for deep recessed jacks found in Europe
Testing 110-Style IDC Systems
Note:
Installations using IDC-type connectors not shown in this table may be tested against the test specification for the Permanent Link using the appropriate Basic Link Adapters. The basic link adapters available from Fluke Networks are listed on the DSP-4000 Series product page. Consult with the manufacturer of the connecting hardware to ensure that you certify the installation in agreement with his warranty requirements. To ensure reliable results for Return Loss, treat the twisted pair Basic Link Adapters cables with extra care.