Operational Diagram
Chapter Three: Overview
82
Operational Diagram
Included with this manual is an operational diagram depicting the procedures used to perform
tasks with the 146 unit. The purpose of the diagram is to provide a pictorial quick reference
guide to the different modes of the 146 unit, the functions (tasks) contained within each mode,
and instructions needed to perform those functions. The instructions included in the diagram are
complete, but terse. Once you are familiar with the 146 instrument, however, this diagram may
be all you need to refresh your memory on how to perform the functions shown.
The black text in the diagram represents keys on the front panel of the 146 unit. For example,
the word [
ENTER
] is written in black text and it represents the [
ENTER
] key on the 146 front
panel. Blue text is used for instructions and general information. For example, the instruction
1. Enter sensor range is written in blue text. Red text designates the five modes of the 146 unit
(Normal, Leakage, Setup, Tuning, and Control), and the functions the instrument can perform
(smaller red text). For example, the function Set Alarm Trip Points is written in red text.
Heavy black lines separate the modes.
The different colors of the wedges in the chart indicate the flow of instructions. Starting at the
center of the diagram, you may enter any of the black wedges containing a mode name (large, red
text), by pressing the key indicated. For example, use [
CONTROL MODE
] to enter Control Mode,
and use [
DISPLAY MODE
] to scroll through the other modes. Once in the correct black wedge, the
flow of instructions always proceeds to a new colored wedge that is touching whatever wedge
you are in. The sequence is always black to blue, blue to red, and red to green.
Example 1:
SELECT A MODE
Starting at the center of the diagram, the 146 unit defaults to Normal Mode (this is
indicated by the dotted line arrow). Use the [
DISPLAY MODE
] key to scroll to Leakage
Mode.
PROCEED TO A BLUE COLORED WEDGE
There is only one new colored wedge touching the Leakage Mode wedge. This is the
blue colored wedge that Leakage Mode shares with Normal Mode. The wedge contains
general information.
PROCEED TO A RED COLORED WEDGE
There are 10 red colored wedges touching the blue wedge you are in. You may perform
any of the functions described in those wedges. For example, one function listed is Turn
a Channel On or Off. To accomplish this, follow the directions inside the function’s red
colored wedge.
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