Instruction manual
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Note:  Locking the keypad may cause the PLUS and MINUS keys to 
function differently. (See “Pattern Adjustment”.) The zero key 
will not function when the display is locked. 
Pattern Adjustment (Basic Display Only) 
Whenever the readhead is disconnected from its power source, or the 
display is turned off, and the readhead is moved over a pattern joint, the 
displayed reading may be one or more patterns (+ 430mm) in error when 
power is restored. This may also occur if the readhead is moved too 
quickly in Model 150/250 systems. 
To correct the error, place the  digital display in ABS LOCK mode and 
use the PLUS or MINUS keys to increment or decrement the reading 
until the proper reading is displayed. Using this procedure will result in 
NO LOSS OF ACCURACY to the system. 
Changing the Batteries 
To change the batteries, remove the two screws holding the cover to the 
base of the display housing. Carefully pull off the cover. Remove the 
batteries. Reinstall new ones, noting the proper orientation shown in the 
battery compartment. Replace the cover and tighten the screws. 
Note:  DO NOT ATTEMPT TO BEND BATTERY CLIPS! 
Mounting the Display 
There are four small mounting holes in the back of the display which may 
tapped for M2 or 4-40 screws. The display may also be mounted using 
double sided tape or Velcro. 










