Return Product Form for Helix Traveling Wave Tubes

Returned Product Form for
Helix Traveling-Wave Tubes (TWTs)

Quality System Documentation
Proper Completion of This Form is Vitally Important to the Prompt
and Efficient Handling of Product Warranty Claims.
I.
This claim form, properly completed, must accompany any returned Product and be received by CPI Microwave Power
Products (MPP) prior to expiration of the adjustment period. Compliance with this requirement assures the user of the
most prompt and thorough service possible. A Product returned within the adjustment period, but without the
completed Returned Product Form, will be treated as out of warranty.
II.
Complete the following information regarding the Product being returned:
A. Returned Material Authorization No.:
(Call CPI/MPP Customer Service Department to obtain this number.)
B.
Product Type:
CPI Part No.:
Serial No.:
Customer Part No.:
C.
Control Specification No.:
Revision:
Document of CPI 
(Check one)
Dated:
Document of your company 
D. Customer Purchase Order No.:
Date of Purchase Order:
III. Claim is made against warranty based on the following:
A. Specifications(s) not met by the Product (list by specification and paragraph number):
Establish New Returned Product Form for Helix TWTs
Verify revision before use.
MK 4022-3004
Rev. –
ECO: MPP615204
Date: 2/1/16
Page 1 of 3
Returned Product Form for
Helix Traveling-Wave Tubes (TWTs)

Quality System Documentation
B.
Product Information
Product Type
*Product S/N
Date Installed
Date Failed
Filament Hours
Beam Hours
*It is necessary to have the Product serial number rather than the system serial number
C.
Failure Description — Check Appropriate Box(es)
 Helix current (Iw) runaway
-  DC
 RF
 High helix current (Iw)
-  DC
 RF
- Iw value
- Frequency(s)
 Low power
- Frequency(s)
 Oscillation
-  DC
 RF
- Frequency
- Voltage
 Over temperature/Temperature trip
 TWT will not turn on – surge current
 Gain out of specification
- Frequency
- Measured value
 High Voltage Arcing
-  Gun /  Collector /  W/G
 Down to air (DTA)
 Electrical issues not stated above
 Mechanical problem(s)
-
Other
D. Describe the circumstances and/or sequence of events under which the Product failed as noted. Include remarks
relating to installation problems, system anomalies, and so forth.
MK 4022-3004
Rev. –
ECO: MPP615204
Date: 2/1/16
Page 2 of 3
Returned Product Form for
Helix Traveling-Wave Tubes (TWTs)

Quality System Documentation
IV. Purchaser’s Name:
Address:
Telephone:
Claim made by:
Name of person to contact for additional information:
Telephone:
(Signature)
(Date)
Return completed form with Product promptly to
Communications & Power Industries LLC
Microwave Power Products Division
Building 2 Receiving
811 Hansen Way
Palo Alto, CA 94303-0750
Attention: Returned Products/RMA #____________
Tel:
Fax:
E-mail:
(650) 846-3900
(ask for MPP Customer Service Department)
(650) 856-0705
[email protected]
CAUTION
DAMAGE CAN OCCUR IF COOLANT IS NOT REMOVED BEFORE PRODUCT SHIPMENT.
MK 4022-3004
Rev. –
ECO: MPP615204
Date: 2/1/16
Page 3 of 3