User`s manual

ProScale M150, M250 and all products with General Purpose LCD Digital Displays 38 of 44
Jumpers and Key Press Summary
Circuit Board Jumpers
JUMPER SURFACE MOUNT DISPLAY PANEL MOUNT DISPLAY
JP1 Internal Use Only Power Selection (set same as JP2)
JP2 Absolute (ABS) or Incremental System Power Selection (set same as JP1)
JP3 Programming Enable/Disable Programming Enable/Disable
JP4 Display Power – Battery or 24VDC Internal Use Only
JP5 Internal Use Only N/A
Key Press Functions:
ON/OFF (Press & Hold) + MODE (Momentarily)
Enable/Disable LOCK mode (‘0’, ‘+’ & ‘-‘ keys).
MODE (Press & Hold) + ‘0’(Momentarily)
Enter or Exit Programming Mode
While in Programming mode:
MODE (Momentarily)
Advances through the Programming Parameter list.
ON/OFF (Press & Hold) + MODE (Momentarily)
Steps backwards in Programming Parameter list
+ (Momentarily) while displaying a Programming Parameter
Increases the Parameter setting.
- (Momentarily) while displaying a Programming Parameter
Decreases the parameter setting.
0 (Momentarily) while displaying a Programming Parameter
Reverts the parameter to its Factory Default setting.
MODE (Press & Hold + ‘+’ or ‘-‘(Momentarily)
Apply Segment Offset Adjustment
ON/OFF (Momentarily)
Turn Display power on or off
ON/OFF (Press & Hold) for 5 seconds
Display Battery Voltage
ON/OFF + MODE (Press & Hold Both keys) for 10 seconds (with display power off)
LCD Segment Test & sets ALL Programming parameters to factory defaults
How long a key is depressed, and the combination of the keys pressed is important. The
term (Momentarily) describes a key press of typically less than 1 second. Whereas
(Press & Hold) is used imply a key press of typically longer than 1.5 seconds.
For example: When using a PC keyboard to type a CAPITAL letter you would “press and
hold” the SHIFT key and “momentarily” depress the LETTER key.
In addition, a key(s) “function” is executed on the key RELEASE, not the key DEPRESS
of that key(s). This is important since some keys execute different functions based on
how long they are depressed. These key operations, once tried, quickly become intuitive.