User manual


23
A l i g n m e n t p r o c e d u r e
Signal inputs
   

    





Caution!
Particular care should be taken, when applying
signal voltages to the 1 GHz input of the HM8021-4
unit. A maximum voltage of 5 V (DC+AC
peak
) may
be applied to the input C (see ”Specications”).
Any input voltage exceeding this value will de-
stroy the input stage of the frequency counter!
Frequency measurement































Period measurement




Time interval measurement
(Pulsewidth)
 






 


 



√ 









   
 

  

    








Totalizing (Event counting)




External gate



