User's Manual Part 7

ProScale M150, M250 and all products with General Purpose LCD Digital Displays 37 of 37
Jumpers – Panel 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’.
Panel Mount Display
Circuit Board
JP1 & JP2 Display Power
These jumpers set the display to operate on either 2D batteries or 24VDC.
To configure the display to operate on 24VDC power JP1
AND
JP2 should be set to
position
A
THEY MUST BE SET ON THE SAME SETTING
To configure the display to operate on battery power JP1
AND
JP2 should be set to
Position
B
THEY MUST BE SET ON THE SAME SETTING
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:
JP4 FOR FACTORY USE ONLY
JP1 JP2
JP3 JP4