Fluke DTX-MFM2 User Manual page 19

The gray mandrels included with the DTX-MFM2 are
compliant with ANSI/TIA-568-C for 62.5 µm fiber with a
3 mm jacket. Mandrels for 50 µm fiber are available from
Fluke Networks. Refer to the appropriate standard for
mandrel requirements if you follow other standards. Table
1 shows a partial list of mandrel requirements for TIA
standards.
Fiber
core size
50 µm
62.5 µm
Downloaded from Elcodis.com electronic components distributor
Table 1. ANSI/TIA-568-C Mandrel Requirements
Standard
ANSI/TIA-568-C.0 6.4.2.1
ANSI/TIA-568-C.0 6.4.2.1
Figure 5 shows how to wrap the fiber around a mandrel.
Place mandrels on the tester's output fibers, as shown in
Figures 8 through 15.
In the reference and test connection diagrams shown on
the tester, mandrels are indicated by a loop in the fiber.
Wraps Around Mandrel Diameter for
Mandrel 250 µm Buffered Fiber
5 25 mm (1.0 in)
5 20 mm (0.8 in)
Essentials for Reliable Fiber Test Results
Mandrel Diameter for 3 mm
(0.12 in) Jacketed Cable
22 mm (0.9 in)
17 mm (0.7 in)
13