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8 Configuring the Recorder
8-28 TESLA LITE User Manual D03283R01.10
Settings
Figure 8.17: Impedance Channel Configuration Screen
Table 8.12: Impedance Channel Settings
Element Identifies the group to which this channel belongs. The Element forms
the first part of the channel name. The Element is selected when the
channel is created and is fixed once assigned when you are working
in the Element Tree view.
Description Optional field (12 characters). Provides an additional description of
the channel that forms part of the channel name. Use if Element
Name and channel Type do not sufficiently identify the channel.
(“Channel Grouping and Naming” on page 8-7).
Impedance Index Identifies the Impedance channel. Unlike the analog and external
input channels, this is not associated with a hardware input, but sim-
ply identifies which of the internal virtual impedance channels will be
used.
You can select any available channel without restriction. If the only
option is “undefined”, you have already used all available channels.
Voltage Input, Cur-
rent Input Identifies the channels to be used to create the impedance. If you
select analog or summation channels as inputs, the impedance chan-
nel calculates single-phase impedance; if you select sequence chan-
nels, it calculates three-phase impedance.The list is limited to
channels of the correct type (voltage or current) and includes analog
input or summation channels which have already been defined. The
list grows automatically as you define new channels.
Trigger Settings
Rate of Change
Interval Specifies the period of time over which both positive and negative rate
of change is measured. 0.5 to 8.0 cycles.
Circle Radius Specifies the radius of the impedance circle in secondary ohms.
Minimum Change Specifies the minimum impedance change to be detected.