LAMAR BETA D-50 Operating Manual - page 18

4. DETAILED OPERATING INSTRUCTIONS  

G.

  PUSH START BUTTON  

The audible alarm stops. The voltmeter displays the battery 

voltage, the ammeter reads 0 and the timer starts. “OP” on the 

timer illuminates and the red LED flashes.  

H.

  SET DISCHARGE CURRENT  

Slowly turn the multi-turn Ampere Adjust knob  

clockwise to the desired discharge current. The  

ammeter displays the current as it is being  

adjusted.  

4.7 TEST COMPLETION AND ANALYSIS  

The Beta D-50 automatically completes the test with the set parameters. It may 

however be required to measure the individual cell voltages for nickel-cadmium 

batteries during the test (see section 4.7.2).  

I.

   WAIT FOR THE DISCHARGE TEST TO AUTOMATICALLY  

 COMPLETE 

During the test the battery voltage, discharge current, and elapsed discharge  

times are displayed. The voltage will continuously decrease while the current  

remains constant. The test completes when either the set discharge time or the low 

cutoff voltage has been reached. An audible alarm sounds and the displays freeze 

at their final values.  

J. 

1. IF TEST PASSED 

The green Accept lamp illuminates. This  

indicates the discharge has continued through the 

duration of the set discharge time (the red LED and 

“OP” on timer is off) without the cutoff voltage being 

reached. The battery is usually fit for  

service, after complete recharge. See 4.7.1 and  

4.7.2 for respective battery type.  

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BETA D-50 TESTER / ANALYZER - OPERATING MANUAL V2.2