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CPI Confidential V 11 

June 12, 2009 

 
 

application,  available  from  CPI’s  website  at 

www.cpii.com/product.cfm/7/37

.  Plugged 

cable should resemble configuration in the picture above. 
Turn on the KPA power ignoring the channel change link fault. Tuner should move to the 
HOME position and then it will assume the last active channel settings. 
 
Start  your  “FELIX”  software  application.  For  detailed  instruction  on  how  to  operate 
“FELIX”  software  please  refer  to  the  supplied  DFTS  Manual  or  download  it  at 

http://www.cpii.com/docs/related/37/dftsmanual.pdf

Enter PASSWORD and then send it to the HOME position. 
 

 

 
If the motors are struggling to execute this command, give them a helping hand. A gentle 
turn  of  the  struggling  pulley  in  the  same  direction  the  motor  is  trying  to  turn  should 
suffice. Be extremely careful doing this! 
 

Caution: Do NOT place fingers inside the belt loop as they could be pinched by the 
pulley. 

 
Now  turn  the  KPA  power  OFF.  This  removes  the  holding  current  from  the  motors, 
making the next step much easier. Remove the channel changer controller. Insert the flat-
head  screwdriver  in  the  slotted  shaft  of  each  motor  and  turn  it  four  turns  clockwise  as 
shown in picture above. This moves the plungers behind home and ensures that any dirty 
grease  is  moved  out  of  the  active  area  of  the  threads.  For  details  see  the  picture  on  the 
next page. 

Summary of Contents for S-Band DFTS D50

Page 1: ...e customers own discretion Should the customer decide to perform this operation CPI cannot be responsible for any damage to the klystron by the incorrect application of this procedure or by improper handling of the klystron The procedure will take a few hours It should be implemented by qualified technicians with knowledge about CPI klystron products The successful maintenance of the tuner may be ...

Page 2: ...ture loosening the four thumbscrews locating on the side mounting plates and then disconnecting and removing the channel changer controller caution care must be taken as you remove the channel change controller because a D50 connector exists between it and the motor module from the motor module Channel changer controller assembly D15 connector Thumbscrews two on each side of controller bracket mou...

Page 3: ...re above Remove the tuner cover shown in above picture unfastening 4 screws using a stubby Phillips screwdriver taking care in the strong magnetic field Preferably use non magnetic tools Right side controller bracket showing two screws Left side controller bracket showing screw Tuner cover right side screws two screws also on left side Tuner cover ...

Page 4: ...C interface cable supplied with each klystron CPI P N 764058 Plug the DB15 f connector marked CONTROLLER into the DB15 m port on the channel changer controller assembly Connect DB15 m connector marked A2J7 to the cable coming from the KPA marked the same This will provide required power to the channel changer controller assembly Connect the DB9 f connector marked LAPTOP to your laptop s serial por...

Page 5: ...nd it to the HOME position If the motors are struggling to execute this command give them a helping hand A gentle turn of the struggling pulley in the same direction the motor is trying to turn should suffice Be extremely careful doing this Caution Do NOT place fingers inside the belt loop as they could be pinched by the pulley Now turn the KPA power OFF This removes the holding current from the m...

Page 6: ...ower Once the tuner initialization is complete use FELIX software to select the highest frequency channel as shown in picture below This will allow access to the driving screw threads to be inspected Home position marker at least half way into the optical sensor Optical sensor Tuner the highest channel Exposed driving screw thread Optical sensor Home position marker ...

Page 7: ...ical sensor Please do NOT use cotton Q tips to clean threads This could leave cotton fibers on the threads After cleaning allow sufficient time for solvent to dry Inspect the threads for the dirt residue The entire exposed thread should now be coated in PTFE based grease e g Super Lube Synthetic Grease with Syncolon PTFE For more information go to www super lube com Make sure that excess grease do...

Page 8: ...s stuck at any point or errors are reported on FELIX repeat the cleaning and lubrication procedure and retest Note As a guideline travel from Channel 1 to 50 should take about 12 seconds with well functioning channel changers Channel change faults will not be shown on the KPA until this time exceeds 30 seconds The HOME process will take longer than 30 seconds but only happens when KPA is powered o...

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