Display Functions And User Interface; Main Screen; Stats; Hold - Fluke 1523 Technical Manual

4 Display Functions and User Interface

This chapter discusses in detail how to operate the Reference Thermometer us-
ing the front panel keys and liquid crystal display (LCD). This includes reading
temperature(s) in °C or °F, viewing statistics, using the auxiliary display for differen-
tial temperature (T1-T2) or electrical readings (Ω, mV), capturing up to 25 discrete
data readings with statistics, logging up to 15,000 readings at selected time intervals,
and configuring the communication interface. Refer to the full menu structure diagram
in the previous section.

4.1 Main Screen

The LCD on the front panel allows direct viewing of the temperature readings, auxilia-
ry reading, statistics (MIN, MAX, AVE, and STDDEV), or a graphical representation
of the temperature reading over time with the temperature or stats for the temperature
above the graph. The temperature displayed is either in °C or °F, and is easily changed
by pressing the °C °F key on the front keypad. The main displayed value is the tem-
perature reading from the probe. The auxiliary reading is the value displayed based
on the user options from the SETUP menu and includes the reading in ohms, mV,
Delta X, T1 – T2, or T2 – T1, or the reference junction temperature if a thermocouple
is used. The main screen will also show the menu items and selections when a menu
related key is pressed. The following sections describe the keys and menu functions.

4.2 STATS

The STATS key allows the user to view the minimum, maximum, average, and the
standard deviation of the readings on each channel. When using this feature, press the
STATS key to enter this mode. Press the STATS key again to toggle through the statis-
tics options, MAX, MIN, AVE, and STDDEV. The results of the selection are shown
in the main numeric display. If the user enters into the graphing mode, the results of
the selection will be displayed across the top of the graph in the smaller characters.
When using this feature on the 1524 dual channel instrument, both of the channels
will display the same selection, MIN, MAX, AVE, or STDDEV. The user is unable to
select different statistics options for each channel. Press the RESET or HOME keys to
exit the STATS mode.
4.3 °C °F
The °C °F key allows the user to quickly change between units. In the main numeric
screen, this key will toggle the units in both the main and auxiliary display values. In
graphing mode, the unit change will cause the graph to refresh. Select units prior to
starting a graphing session. Units are displayed and recorded with temperature read-
ings, auxiliary readings, and logged data.

4.4 HOLD

This mode is identified by "HOLD" which appears on the bottom center of the display.
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