DTX-MFM2/GFM2/SFM2 Fiber Modules
Users Manual
58
4. Test the Cord in Both Directions
4-1
Disconnect the test reference cord from the INPUT port
of the tester (Figure A-4,
A
).
4-2
Connect the cord you want test (Figure A-4,
B
).
4-3
Turn the rotary switch to AUTOTEST, then press P.
This test measures the loss of connector shown in
Figure A-4.
4-4
When the first part of the test is completed, connect
the cord in the opposite direction (Figure A-4,
C
).
4-5
Press KOK. This test measures the loss of
connector shown in Figure A-4.
5. Read the Loss Measurements
Compare the loss measurement for each direction to these
limits:
•
Multimode test reference cord: 0.10 dB or less
•
Singlemode test reference cord: 0.20 dB or less
If the connectors show no contamination or damage, but
the loss is higher than these limits, the cord does not
comply with ISO/IEC 14763-3. Do not use the cord as a test
reference cord.
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