Hitachi 670 Series Application Guide

IEC10000062 V1 EN-US
Figure 6: Setting DeadbandtDiff in PCM600
Figure 7 shows an oscillogram example of deadband, measured change in time delay and scattering
(deviation in calculation) within the set DeadbandtDiff value.
D
dt
IEC07000226-1-en.vsdx
IEC07000226 V1 EN-US
Figure 7: An oscillogram example showing deadband (D), measured change in time delay
(dt) and scattering
D
DeadbandtDiff = ±200 μs
dt Measured time delay change = ±200 μs
Scattering Random fluctuations in time delay due to, for example, varying switching time in multiplexers
that induces jitter and wander.
Section 2 1MRK505382-UEN Rev. K
Telecommunication networks and line differential protection
16 Communication set-up, 670/650 series
Application Guide
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Hitachi 670 Series Specifications

General

Brand	Hitachi
Model	670 Series
Category	Control Unit
Language	English