NFK1-SC FLUKE NETWORKS, NFK1-SC Datasheet - Page 124

• Manufacturer Part Number: NFK1-SC
• Description: LAN Tester
• Manufacturer: FLUKE NETWORKS

Specifications of NFK1-SC

• Lead Free Status / RoHS Status: na

OF-500 OptiFiber Certifying OTDR
Technical Reference Handbook
3-48
PULSE WIDTH
Setting
The pulse width determines the deadzones of the trace and affects dynamic range.
Narrower pulses let you see more detail in and around reflective events and help you see events
that are close together (hidden events). However, narrower pulses limit the OTDR’s range and
produce traces with more background noise between events. With narrower pulses, you may not
be able to distinguish small loss events from the noise on the trace. The narrowest pulses are not
suitable for measuring loss, since linearity is not guaranteed (except on OFTM-57xx modules). The
backscatter level may be so low that it does not appear on the trace.
Wider pulses raise the backscatter level, which provides a better signal-to-noise ratio around non-
reflective events. This helps you see smaller loss events and measure their loss more accurately,
but increases the deadzones of events.
Auto: The tester selects the narrowest pulse that still reveals loss events.
Table 3-5. Manual OTDR Settings (cont.)
Description and Selection Guidelines
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