Installation manual
Operation Manual for LCD Digital Readouts  Page 14 of 48 
SECTION 3     OPERATION 
Fundamental Operation 
The following operations & functions apply to the Basic, General Purpose and 
Panel mount LCD Digital Readouts. 
KEY TIMING 
The keys pictured below have multiple functions.   Timing (how long a  key is 
depressed) is important.  This manual uses the term “momentarily” to describe 
a key press and release of less than .8 seconds.  Whereas “press and hold” is 
used to describe a key press and release of 1 second or longer. 
See Table Below: 
A function is executed on the “key release” for momentary key presses. 
A function is executed after the allotted time has elapsed for “press & hold” 
operations. See Table Below: 
  Momentarily Press  Press & Hold 
UNITS 
Cycles measurement units: 
inches, fractions, mm 
No effect 
(in programming mode)  Increments program parameter list  Displays Pr # 
Plus (+)  increments displayed value  increments faster 
(in programming mode)  increments parameter value  increments faster 
Datum 
forces reading to programmed 
datum value 
After 6 seconds: battery voltage
After 9 seconds: Temperature 
(in programming mode)  forces parameter to factory default  no effect 
Minus (-)  decrements displayed value  decrements faster 
(in programming mode)  decrements parameter value  decrements faster 
Momentarily  Press & Hold 
How long a key is pressed?  Less than .8 seconds  More than 1 second 
When is key function executed?  On key release  While holding 










