AFL M310 - Recommended Accessories

67
Fiber Optic Test Cables and Jumpers
Fiber optic test cables are necessary to connect an OTDR to the ber under test (FUT). Test cables
must have the same core and cladding size as the FUT. The connector at one end of the test cable
must mate with the appropriate optical port on the OTDR. The connector on the other end must
mate with the ber optic link under test.
Launch and Receive cables are required to measure the insertion loss and reectance of the near-
end and far-end connectors respectively, of the ber link being tested. If the user has not used
both Launch and Receive cables “Link Loss” and “Link ORL” will be agged with an (*)asterisk
indicating “does not include loss of last connector” or “Does not include Receive Cable” in the PC
analysis and reports. AFL Fiber Rings may be used as Launch and Receive cables. Fiber Rings with a
variety of lengths and connector styles are available from AFL.
Fiber Optic Test Cables and Jumpers Selection Chart
To do the following test You will need the following accessories
To connect your OTDR to the
ber link under test
To terminate far-end of the
ber link under test
• Fault locate - nd a break
• Measure link length
Test Jumper (1-2 m typical) None
• Measure near-end connector
loss
• Measure near-end connector
reectance
Launch cable
(such as a AFL 150 m,
500m, 1000 m Fiber Ring)
None
• Measure near-end and
far-end connector loss and
reectance
• Measure end to end link
loss and link ORL
Launch cable
(such as a AFL 150 m,
500m, 1000 m Fiber Ring)
Receive cable
(such as a AFL 150 m,
500m, 1000 m Fiber Ring)
Fiber Ring (FR) Selection Chart
FR Length Fiber Type Fiber under Test Limits Comments
150 m (492 ft) Multimode All runs 30 m to 3 km or
2 mi
Multimode runs are <3 km or 2 mi
150 m (492 ft) Single-mode All P W's up to 1,000 ns
or 1 µs
* PW of 1 µs = pulse length of 100 m
500 m (1,640 ft) Single-mode All PW's up to 3,000 ns
or 3 µs
PW of 3 µs = pulse length of 300 m
1 km (3,281 ft) Single-mode All PW's < 5,000 ns or 5 µs PW of 5 µs = pulse length of 500 m
5 km (16,405 ft) Single-mode All PW's up to 20,000 ns
or 20 µs
PW of 20 µs = pulse length of 2 km
* A PW of 1,000 ns (1 µs) requires reective events lower than -45 dB of ORL to be used with the
150 meter ber rings.
Recommended Accessories