ACCUSPLIT, Inc.  •  3090 Independence Drive, Suite 148  •  Livermore, CA 94551 USA
800-935-1996  •  925-290-1900  •  FAX 925-290-1930  • www.ACCUSPLIT .com  •  support@ACCUSPLIT .com
970-030
NO-PROOF-OF-PUR CHASE LIMITED  WARRANT Y
S ee la be l o n b a ck o f u nit  fo r d eta ils,  or ch ec k   
h tt p :/ /s u ppo rt.A CCU SP LIT .c omREGISTER NOW Please return 
your AE520S Registration to the 
Repair Center address in the 
warranty , and we will let you 
know about future products.  Email (preferred)...
                                            

                                                    ACCUSPLIT , Inc.
3090 Independence Drive,, Suite 148 Livermore, CA 94551 USA
800-935-1996  •  925-290-1900  •  FAX 925-290-1930
www .ACCUSPLIT .com  •  suppor t@ACCUSPLIT .com 
                                            

                                                    
INTRODUCTION
This unit has five modes: Stopwatch, Auto Repeat Countdown 
Timer, Dual Display Countdown Timer, Pacer, and Preset 
Countdown Timer.
Press C (MODE) to change between modes. Note: Timing must 
be stopped and reset to zero to change modes. 
MEMORY STOPWATCH
SPLIT TIMING
1. Press C to move the cursor to point to
2. Press A to start stopwatch
3.  Press B repeatedly to remember the last 8 splits 
  • Lower display shows cumulative split and upper 
 
    display shows lap split
  • After 5...
                                            

                                                    AX850 PACE CLOCK
Operating Instructions
Installing the Battery 
1. Remove the battery door in back by pushing tab   
  down and pulling toward you. The adjustment knob   
  (with stem) will be attached to the door when opened.
2.   First, insert LR6 (AA) battery with + (Positive) end into  
  left end, then be sure copper switch plate (end tip of  
  wire) is between – (Negative) end of battery and  
  – (Negative) side of battery holder and press battery  
  into position.
3.  Reinstall door being...