User Manual

8
6.4 Linear calibration
With the indicator connected to the PC as shown in
Fig 6 and communication established, proceed as
follows:
(1) Right hand side tab
Click the Input / Output tab which will produce
the screen shown in Fig 7.
(2) Linearisation Mode
Set to Normal for linear calibration
(3) Filter
Select frequency of local mains supply to obtain
the maximum interference rejection.
(4) Tag
Up to 16 upper and lower case alphanumeric
characters may be entered to identify the
instrument. This identification only appears on
the Configuration Programme screen not on the
instrument display.
(5) Display Resolution
Defines the number of digits displayed by the
indicator after the decimal point. None,
One, Two or Three digits may be selected,
alternatively selecting Auto instructs the
indicator to display the maximum number of
digits possible after the decimal point which will
vary as the indicator display changes.
Note: Display Resolution does not affect the
Configuration Programme Screen that always
shows a fixed number of digits after the decimal
point.
(6) Input Settings panel
Defines the input current at which the zero
value display and the full value display are
defined which is normally 4 and 20mA. These
figures may be typed into the relevant boxes or
clicking the Capture Zero or Capture Full
buttons will automatically enter the current
actually flowing into the indicator input
terminals. This feature is useful when a
complete loop is being calibrated.
Fig 7 BEKA Configuration Programme Screen