Pendulum CNT-90 Parts list manual

GETTING STARTED
MANUAL
Part No.:
Revision:
Date:
4031-600-90401
1
6 March, 2020
Timer/Counter/Analyzer
CNT-90, CNT-91, CNT-90/AN
Frequency Calibrator/Analyzer
CNT-91R
Microwave Counter/Analyzer
CNT-90XL
Reproduction and distribution of this technical manual
is authorized for United States Government purposes.
© 2021 Pendulum Instruments.
All rights reserved.


 ................................................................... 1-2
About this Manual.................................................... 1-2
Warranty........................................................................... 1-2
...................................... 1-2
........................................................ 1-3
 ......................... 1-3
....................................................................... 1-3
.......................................... 1-4

 ...................................................................... 2-2
................................................................... 2-2
.............................................................. 2-2
................................ 2-2
...................................................................... 2-2
 ................................................................... 2-2
 ..................................................................... 2-2
Fuse ......................................................................... 2-2
................................................................... 2-3
................................................................... 2-3
 .................................................... 2-3
................................................. 2-3
 .................................... 2-3
.......................................... 2-3
................................. 2-3
 ..................................................... 2-4

Fan............................................................................ 2-4
 ............................................................... 2-4
...................................... 2-4
 ............................................. 2-4
 ............................................. 2-4

 .................................................................. 3-2
............................................................... 3-2
............................ 3-2
..................................................... 3-3
............................................................................ 3-3
........................................................... 3-3
 ........................................................... 3-3
................................................................ 3-3
.............................................................................. 3-3
......................................................................... 3-3
 ........................................................................... 3-3
 .................................................. 3-4
................................................................................... 3-4
.......................................................................... 3-4
 ..................................................................... 3-5
......................................................... 3-5
 ...................................................................... 3-5
 ...................................................................... 3-5
..................................................................... 3-6
............................................................... 3-7
 ........................................................... 
.................................................................. 3-9
Restart ...................................................................... 3-9
.................................................3-9




























2







           



          

        


           

About this Manual




Warranty
        







        









         

The warranty commitments are rendered void if unauthorized
access to the interior of the instrument has taken place
during the given warranty period.

CAUTION: Shows where incorrect procedures can cause
damage to, or destrucon of equipment or other property.
WARNING: Shows a potenal danger that requires correct
procedures or pracces to prevent personal injury.


      
      

       







            


   

– Disconnect the line cord.
– 
–  


3



Unpacking
        

        




–  
– 
– 

–        

–  
–  
– 
• 
• 
• 




     



Reading the Electronic Manuals
You need the Adobe®Reader®      
             
.
            

Installaon


          


Fuse
      





CAUTION: If this fuse is blown, it is likely that the power
supply is badly damaged. Do not replace the fuse. Send the
counter to the local Service Center.
       


The warranty commitments are rendered void if unauthorized
access to the interior of the instrument has taken place
during the given warranty period.

         
      





CAUTION: If a unit is moved from a cold to a warm
environment, condensaon may cause a shock hazard.
Ensure, therefore, that the grounding requirements are
strictly met. Allow enough me for the instrument to adapt
to new ambient condions before connecng it to line
power.
WARNING: Never interrupt the grounding cord. Any
interrupon of the protecve ground connecon inside or
outside the instrument or disconnecon of the protecve
ground terminal is likely to make the instrument dangerous.
4





 


         
        


          



     
          







       

Fan









counter.

          
          




5




         



         



        
       

  
  








6










        
       



       




      
         







       



















         
        
       
       

          







         



        
       

• 
• 
• 



• 

• 
• 
• 
• 
• 
7


       
            


 

  



 
  
           
         
          


          

         












           



•        

• 
• 
• 
•          

• 
          

•             






  



         






           






          

      





        


          









•   

• 
•        

• 

     
        
     
        
 




Miscellaneous

• 

• 
        


•      
          
         



     
         
  

•      
          


•      


Math
       
        
        
          







         


           






         



• 
• 

• 
            


9

•           





           
address.
• 
• 


• 

Test Menu


Test Mode

• 
• 
• 
• 
• 
• 
Start Test



• Model
• 
• 
• 
• 

         






Restart

     





         


        




         
        
     



old one.
10