Selecting Operating Units; Switching Units - Instron 4400 Series Operator's Manual

Universal testing system
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Selecting Operating Units

Selecting Operating Units

Switching Units

The operating units (English, metric, S.I.) in use in a Se-
ries 4400 system is controlled by the position of the
units selection switch, marked "mm/IN/SI" located on
the rear panel of the console. The switch is a rocker
type; depressing the left-hand side sets the units to met-
ric, the center position is English units, and depressing
the right-hand side sets the units to SI.
You should normally set the units selection switch before
powering up the system. When system power is applied, the
choice of units is shown by the units indicator on the Main
Panel. If this switch has been changed since the last time the
system was powered up, the Main Panel Display shows
"LOSS". This indicates that nonvolatile memory is reset to
the default state and stored test data is lost.
Note
If you change the units selection switch position with
power applied to a calibrated system, the front panel
units indicator will not change. You must perform ONE
of the following procedures to make the units change
valid:
(a) Cycle main power off then on.
(b) Enter the system reset sequence: Press S1, then press
4-32
You must recalibrate the load and strain chan-
nels and reset the electronic limits if "LOSS"
appears on the display panel.
[0] and [ENTER] on the keypad.
M10-94400-1

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