PERFORMANCE VERIFICATION TESTS
KI23400/KI27400 UM-2
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83 -
2. Re-set the meter to factory ORL defaults: select [Power], [
],
[Default] and [Set] to store.
3. Plug the APC end of the patch lead into the ORL port. To display
ORL, press [Return Loss] and [-/+] to select the active
λ
, e.g.
1310nm.
4. With
test lead’s APC end
connected to ORL port, note the reading:
A reading between -13.26 dB RL and -15.26 dB RL for SMF and
-13.15 dB RL and -15.15 dB RL for MMF is within calibration
specification. This is ORL measured on PC end of the test lead.
Repeat this step for 1550 nm.
5. Plug the APC Low Reflection Terminator into the ORL port and,
note the reading.
For single mode instruments, reading between -
50 and ‘Lo’ dB RL
indicates terminator and instrument are working correctly.
For multimode instruments, reading between -
35 and ‘Lo’ dB RL
indicates terminator and instrument are working correctly.
6. To verify the supplied PC-APC test lead and PC Low Reflection
Terminator, plug the APC end of the test lead into the ORL port
and the PC terminator into the far end of the test lead.
For single mode instruments, reading between -
35 and ‘Lo’ dB RL
indicates the terminator, patch lead and instrument are working
correctly.
For multimode instruments, reading between -
20 dB and ‘Lo’ RL
indicates the terminator, patch lead and instrument, are working
correctly.
Figure 16B. Test set up for ORL verification test
ORL
port
ORL
port
APC
Terminator
port
APC end of
test lead
PC end of
test lead
PC
Terminator
