Operation Manual

DTX Series CableAnalyzer
Technical Reference Handbook
2-18
Step 6: Testing the Test Reference Cords
6-1 Disconnect the test reference cords from the INPUT
ports on the tester and smart remote.
6-2 Make the connections shown in Figure 2-11.
6-3 Turn the rotary switch to AUTOTEST, then press P.
6-4 Press H to see the test results. The results for each
fiber (Input Fiber and Output Fiber) must be no more
than these limits:
WCaution
An overall result of PASS does not show that the
test reference cords are good. You must compare
the loss to the limits given here to make sure the
cords are good.
Multimode test reference cord:
850 nm: 0.11 dB or less
1300 nm: 0.10 dB or less
(The limits are different because fiber has more loss at
850 nm than at 1300 nm.)
Singlemode test reference cord:
0.20 dB or less for 1310 nm and 1550 nm
6-5 If a result is more than the limit shown above, use the
procedure given in Appendix A to test the cords in the
path that failed (Input Fiber or Output Fiber). When you
have good test reference cords, set the reference and do
these steps (6-1 through 6-5) again before you test a
fiber link.
Note
The Input Fiber is the fiber connected to the INPUT
port on the main tester. The Output Fiber is the
fiber connected to the OUTPUT port on the main
tester.
6-6 Save the test results to show that you used good test
reference cords to test the link:
6-7 Press N.
6-8 Use the text editing screen to enter a name for the
results. See Figure
Figure 2-1 on page 2-3 for
details on editing text.
6-9 Press N when you are done.
Note
Fluke Networks recommends that you use this
procedure to make sure your test reference cords
are good before you test each fiber link.