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Laurel Electronics LAUREATE SERIES 2 DIGITAL PANEL METER User Manual

Page 62

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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:

Peak and Valley Reset. Achieved by simultaneously pressing the RESET

and PEAK keys.

Latched Alarm Reset. Achieved by simultaneously pressing the RESET and

ALARMS keys.

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.