User`s manual

ProScale M150, M250 with LCD Digital Displays Page 41 of 48
JP1 JP2
JP3 JP4
Panel Mount Displays
JP1 & JP2 Display Power
These jumpers set the Display to operate on either 2 D 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 AVOID DAMAGE
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 TO AVOID DAMAGE
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 FOR FACTORY USE ONLY
Panel
Mount
Display
Circuit
Board