8588A/8558A
Operators Manual
74
Features
Input Terminal Selection
The Product has front and rear INPUT terminals. Push within any function
to open the various input configurations. Softkeys to configure the
terminals.
XWWarning
To prevent possible electrical shock, fire, or personal injury, do
not apply more than the rated voltage, between the terminals or
between each terminal and earth ground.
(Terminals): Is used to select which terminals are in use. Choices are:
• Front: Selects the front terminals only for all inputs.
• Rear: Selects the rear terminals only for all inputs.
• Scan: Front – Rear: Measurements are taken from the front terminals and
then the rear terminals to produce the displayed result, which is the difference
between the measurements from the front and rear terminals.
• Scan: Front / Rear: Measurements are taken from the front terminals and
then the rear terminals to produce the displayed result, which is the ratio of
the front measurement to the rear measurement.
• Scan: (Front – Rear) / Rear: Readings are taken from the front terminals
and then the rear to produce the displayed result. This is the normalized
‘deviation’ value.
• Isolated: When enabled, the Product is in a state of isolation and deselects
all INPUT terminals. This state is useful in a remote control system to isolate
the Product from the system analog bus. See Specifications. See the Remote
Programmer’s Manual.
(Front Delay): Sets the delay before the front measurement is taken in a
scan operation. In Tru Ohms ratio, the front delay is implemented for
measurements in both the forward current and the reverse current. When the
Product is set as an input of front only, Tru Ohms also uses the front delay for the
forward and reverse currents. The delay can be set to Auto (default) or between
0 and 65 000 seconds.
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