User`s manual

Accurate Technology ProScale Page 40 of 48
Jumpers
Surface Mount Displays
Although the ProScale Display uses a keyboard-programming method to
enable and configure features in the unit, several selection jumpers are
located on the circuit board for additional system configuration.
User configurable jumpers consist of three pins and a ‘shorting block’.
The center of these pins is ‘Common’. One end pin is labeled ‘A’ and the
other end pin is labeled ‘B’.
JP1 FOR FACTORY USE ONLY
JP2 Absolute/Incremental ReadHead Selection
The General Purpose (Battery operated) Displays support both Incremental and
Absolute style measuring systems (See Section 1: Terminology). To configure the
Display for use with absolute ReadHeads (default), install the shorting jumper in
position A. For incremental ReadHeads, install in position B. For Lithium Battery use
install on position A.
JP3 Programming Enable/Disable
Front panel entry to the programming mode of the Display can be enabled or
disabled. To enable programming (default), install the shorting jumper in position A.
To disable programming, install in position B. When programming mode is disabled,
the user cannot access the programming functions via the Mode + 0 keys as
described in the Section 4: PROGRAMMING. This provides the user with a method of
configuring the Display with specific parameters and prevents unauthorized
configuration changes.
JP4 Display Power
This jumper configures the Display to operate on either Battery or 24VDC.
This jumper will be set at the factory based on the type of Display you have ordered.
24VDC Displays are not compatible with INCremental systems.
JP5 Battery Selection
1.5v Alkaline Battery: jumper must be placed across B pins
3.6V Lithium Battery: jumpers must be placed across A-B and B-C (see also JP2)
JP1
JP2
JP3
JP4
JP5
Surface
Mount
Display
Circuit
Board