Fluke OF-500-01 OptiFiber Technical Reference Handbook page 237

OTDR Specifications for OFTM-561xB Multimode
Modules (cont.)
6
Loss threshold
7
Distance accuracy
8
Linearity
Sampling resolution
9,10
Reflectance accuracy
Optical return loss accuracy
Minimum pulse width
Real time trace refresh rate
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).
0.2 dB
± 1 m ± 0.005 % of distance
± 50 % of resolution ± index of refraction error
± 0.07 dB/dB
3 cm to 50 cm
± 4 dB
± 4 dB
9,10
850 nm: 4 ns
1300 nm: 8 ns
2 updates per second typical
Maintenance and Specifications
Specifications
12
12-13