FUTEK IPM500 (D500) Digital Display - Manual (Page 55)

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Remote Display
A display mode which allows the meter to serve as a remote display to another
meter when connected to it by a 4-wire phone cord. Also allows the meter to
transmit raw measurement data to a computer and then display processed data
from the computer. A serial communications option board is required in the
meter. If such a board is not installed or no serial data is received, the meter
displays rESEt.
Reset There are three types of Reset:
ƒ Peak and Valley Reset. Achieved by simultaneously pressing the RESET
and PEAK keys.
ƒ Latched Alarm Reset. Achieved by simultaneously pressing the RESET and
ALARMS keys.
ƒ Meter Reset. Causes the meter to reinitialize and take a tare reading when
set up for auto-tare. Achieved powering up the meter, by pressing the
RESET
and MENU keys simultaneously, stepping through all top-level
menu choices, grounding a rear panel connector, or supplying an ASCII
command. rESEt is displayed briefly.
RS485 Half Duplex
Serial communications implemented with two wires, allowing data transmission
in both directions, but not simultaneously.
RS485 Full Duplex
Serial communications implemented with four wires, allowing data transmission
in two directions simultaneously.
Run Mode The normal operating mode of the meter, where readings are taken, as
opposed to the menu mode.
Scale
A constant multiplier used to go from A/D
converter counts to displayed counts. This is
the slope term m in the straight line formula y
= mx + b
, where y is the displayed reading in
counts, m is the scale factor, x is the
measured reading in counts, and b is the
offset. For direct readout in (milli)volts or
(milli)amps, scale is 1.
Scaling The process of setting scale and offset so
that the meter reads properly in engineering
units (such as psi).
Scaling, Coordinates of 2 Points Method
A scaling method where four numbers are entered manually: low input, desired
reading at low input; high input, and desired reading at high input. The meter
then applies a straight line fit. The decimal point is set by the separate dEC.Pt
menu item.
Scaling, Scale and Offset Method
A scaling method where scale and offset are entered manually.