Fluke OF-500-01 OptiFiber, Technical Reference Handbook, Page: 237 / 278

Maintenance and Specifications
Specifications
12-13
12
OTDR Specifications for OFTM-561xB Multimode
Modules (cont.)
Loss threshold 6
0.2 dB
Distance accuracy
7
±
1 m
±
0.005 % of distance
±
50 % of resolution
±
index of refraction error
Linearity
8
±
0.07 dB/dB
Sampling resolution 3 cm to 50 cm
Reflectance accuracy
9,10
±
4 dB
Optical return loss accuracy
9,10
±
4 dB
Minimum pulse width 850 nm: 4 ns
1300 nm: 8 ns
Real time trace refresh rate 2 updates per second typical
6. 6 dB above the noise floor.
7. Does not apply to event table.
8. Not applicable to OTDR tests using the narrowest pulse width (4 ns at 850 nm; 8 ns otherwise).
9. Not applicable to OTDR tests using the narrowest pulse width (4 ns at 850 nm; 8 ns otherwise).
10. Not applicable to hidden events. Upper limit of -40 dB reflectance typical at the near end (100 m).