INNO Instrument VIEW600, User Manual

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Chapter 4 OTDR test 40 Chapter 4 OTDR Module
Sample Setting
1. “Sample”, including options of “Sample Set” and “Fiber Set”, is used to set
sample parameter and fiber parameter.
2. Sample Set: to set the Averaging time, Sampling rate and convert the Units.
1)Averaging Time: to set the measurement time by default.
2)Sampling rate: There are two setups of sampling rate, including normal and high
resolution sampling rates. (Sampling frequency, i.e. sampling rate, refers to number
of optical fibers required to collect and compose discrete signal from continuous
signal per second, Hz as unit.)
Normal Sampling Rate (normal): it is a relatively common sampling rate. In this
mode, fewer signals are collected, but sampling and analysis are faster in speed.
High Resolution Sampling Rate (HR): In this mode, more signals are collected,
measurement distance is more accurate, but the sampling and analysis are slower
in speed.
3)Unit Conversion: 3 types of unit are available on View600, i.e. m/km
、 yd/ mile
ft/kft
3.Fiber Set: To set the IOR, Backscattering (dB), Excess Length (%). Different
numerical results can be obtained after analysis according to different settings.(
Note: Excess Length (%): in the process of fiber laying, part of optical fiber should
be reserved, so in fact the length of fiber is longer. )
1)IOR: It refers to the Index of Refraction of the trace, i.e. group index. The dis-
tance of the trace will vary depending on this parameter. You can input IOR directly
on this device.
2)Backscattering (dB): it refers to the RBS of the trace. The reflectance and ORL of
the trace will vary depending on this parameter.
3)Excess Length (%): To set the Excess Length of the trace. The distance of the
trace will vary depending on this parameter.