AMALGAMATED INSTRUMENT PM4-SSI, Руководство по эксплуатации и инструкция, Страница: 28 / 36

5.36 Clear user scale operation
Display:
CLr U.SCL
Range: n/a
Default Value: n/a
The display scaling via the
U.SCL
function operation can be cleared at this function. Pressing the
^
and
v
buttons simultaneously will clear the user scaling and will cause the scaling to revert
to a 1:1 equivalent i.e. equivalent to
INPt
function set to
1
and
SCLE
function set to
1
. Note
that clearing the user scale will not clear any zero or preset operations, the
CLR ZERO
function
must be used to clear any zero offsets. If necessary the preset value can be changed at the
P.SEt
function and the
P
button or remote input used to activate the preset operation to return the
display to the required scaling.
5.37 Two point live input scaling
Display:
USER SCLE
Range:
on
or
OFF
Default Value:
OFF
Allows selection of two point live input calibration to be used when this function is set to
on
.
This method allows scaling without the need to calculate the required scaling from the SSI en-
coder/sensor data.
The
CAL1
and
CAL2
functions described below can then be used to scale the display. If required
the
CAL OFSt
function can be used to make an adjustment to add or subtract an offset value
across the display range. The
CAL1
,
CAL2
and
CAL OFSt
functions will only be seen when
the
USER SCLE
function is set to
on
. Note: the
U.SCL
function must be set to
OFF
when the
USER SCLE
function is used.
5.38 First calibration scaling point
Display:
CAL1
Range: Any display value
Default Value: n/a
This method of display scaling is used only when the
USER SCLE
function is set to
on
.
CAL1
and
CAL2
are used together to scale the instruments display, values for both must be set when
using this scaling method.
The
CAL1
function sets the first calibration point for live input calibration. When using this
method a “live” signal input must be present at the input terminals. Note:
CAL1
and
CAL2
can
be set independently i.e. it is not necessary to perform a
CAL2
operation directly after a
CAL1
.
Note that some display rounding may occur if the scaling values entered are larger than the normal
binary or Gray code values.
The procedure for entering the first scaling point is:
1. Ensure that an input signal of a know value from an encoder etc. is present at the input
terminals, this will normally be at the low end of the range.
28 of 36 PM4SSIMAN-2.2-0