Ectron 451, Instruction Manual

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CONTROLS
The Model 451 is operated using only the two front-panel controls: the display and the
encoder.
Display
In addition to displaying the various screens, the display
is used to accept the data, or settings, as they appear
on the screen when it is pressed and released. This is
always true, although in a few situations, the user is
asked to confirm his or her intentions with an additional
confirmation request. For instance, if the user answers
YES
to
RESET SYSTEM
, a confirmation will be
prompted so that the user will not accidentally erase all
existing settings without intending to do so. Pressing
and holding the display for approximately two seconds
from any screen takes the user to the
VIEW ANGLE
ADJUST screen so that the brightness and contrast can
be adjusted. This is because with changes in temperature,
the brightness and contrast are subject to variation.
Encoder
The encoder is used by either turning it or pressing it.
Both functions control the cursor (not always displayed)
on the screen. When the screen is a menu item such as
GAIN MODE SETUP or EXAMPLE MODE SETUP ,
a cursor is not displayed because the entire screen will
change when the encoder is rotated. In other words, the
entire screen is the item to be accepted, so there is no
need to display a cursor. When there are data points
that can be changed or yes-no questions to be answered
Figure 3-1 Typical LVDT Connection to the Model 451
Operation Model 451
3-2