User`s manual

ProScale M150, M250 and all products with General Purpose LCD Digital Displays 35 of 44

Jumpers – Surface Mount Display

Although the ProScale display uses a keyboard-programming mode 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’.

Surface Mount Display

Circuit Board

JP1 FOR FACTORY USE ONLY

JP2 Absolute/Incremental Encoder Selection

The General Purpose Digital Display supports both Incremental and Absolute style

measuring systems (See Section 1: ProScale Terminology). To configure the display for

use with absolute (ABS) type encoders (default), install the shorting jumper in position A.

For incremental type encoders, install the shorting jumper in position B.

(ProScale Model 150 & 250 are Absolute systems. Other Accurate Technology products

such as ProCaliper, ProPanel, Measurement Kits, and ProStop are Incremental systems)

NOTE: This functionality is not related to the ABS / INC measurement modes described

in Section 4: Auxiliary Keypad.

JP3 Programming Enable/Disable

Entry to the programming mode of the ProScale display can be enabled or disabled

based on this jumper setting. To enable keyboard programming (default), install the

shorting jumper in position A. To disable keyboard programming, install the shorting

jumper 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 Digital 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.

JP5 FOR FACTORY USE ONLY

JP1