Agilent Technologies 85032B/E 50 Visual Inspection, Look for Obvious Defects and Damage First

Page 19

Use, Maintenance, and Care of the Devices

Visual Inspection

Visual Inspection

Visual inspection and, if necessary, cleaning should be done every time a connection is made. Metal particles from the connector threads may fall into the connector when it is disconnected. One connection made with a dirty or damaged connector can damage both connectors beyond repair.

In some cases, magnification is necessary to see damage on a connector; a magnifying device with a magnification of ≥10× is recommended. However, not all defects that are visible only under magnification will affect the electrical performance of the connector. Use the following guidelines when evaluating the integrity of a connector.

Look for Obvious Defects and Damage First

Examine the connectors first for obvious defects and damage: badly worn plating on the connector interface, deformed threads, or bent, broken, or misaligned center conductors. Connector nuts should move smoothly and be free of burrs, loose metal particles, and rough spots.

What Causes Connector Wear?

Connector wear is caused by connecting and disconnecting the devices. The more use a connector gets, the faster it wears and degrades. The wear is greatly accelerated when connectors are not kept clean, or are connected incorrectly.

Connector wear eventually degrades performance of the device. Calibration devices should have a long life if their use is on the order of a few times per week. Replace devices with worn connectors.

The test port connectors on the network analyzer test set may have many connections each day, and are therefore more subject to wear. It is recommended that an adapter be used as a test port saver to minimize the wear on the test set’s test port connectors.

Inspect the Mating Plane Surfaces

Flat contact between the connectors at all points on their mating plane surfaces is required for a good connection. See Figure 2-1 on page 2-3. Look especially for deep scratches or dents, and for dirt and metal particles on the connector mating plane surfaces. Also look for signs of damage due to excessive or uneven wear or misalignment.

Light burnishing of the mating plane surfaces is normal, and is evident as light scratches or shallow circular marks distributed more or less uniformly over the mating plane surface. Other small defects and cosmetic imperfections are also normal. None of these affect electrical or mechanical performance.

If a connector shows deep scratches or dents, particles clinging to the mating plane surfaces, or uneven wear, clean and inspect it again. Devices with damaged connectors should be discarded. Determine the cause of damage before connecting a new, undamaged connector in the same configuration.

85032B/E

3-3

Image 19
Contents Agilent Part Number Print Date July User’s and Service GuideDocumentation Warranty Contents Troubleshooting General Information Calibration Kit Overview Kit ContentsOptions Installation of the Calibration DefinitionsCalibration Definitions AdaptersIncoming Inspection Serial Number Record for 85032B Recording the Device Serial NumbersSerial Number Record for 85032E Preventive Maintenance Clarifying the Sex of a ConnectorSpecifications Parameter Limits Temperature-What to Watch Out ForEnvironmental Requirements Environmental RequirementsPin Depth Mechanical CharacteristicsPin Depth Limit Supplemental Electrical Characteristics Electrical SpecificationsSupplemental Electrical Characteristics Electrical Specifications for 50Ω Type-N DevicesElectrical Specifications 85032B/E Use, Maintenance, and Care of the Devices Electrostatic Discharge ESD Protection SetupInspect the Mating Plane Surfaces What Causes Connector Wear?Visual Inspection Look for Obvious Defects and Damage FirstInspect Female Connectors Cleaning ConnectorsUse Compressed Air or Nitrogen Reinspect Clean the Mating Plane SurfacesConnector Gage Accuracy Gaging ConnectorsReading the Connector Gage When to Gage ConnectorsGaging Male Type-N Connectors Gaging ProceduresGaging Male Type-N Connectors Gaging Female Type-N Connectors Gaging Female Type-N Connectors Preliminary Connection How to Make a ConnectionFinal Connection Using a Torque Wrench ConnectionsWrench Positions Connecting the Two-Piece Female Open Handling and Storage How to Separate a ConnectionHandling and Storage 85032B/E Performance Verification How Agilent Verifies the Devices in This Kit IntroductionHow Often to Recertify Where to Send a Kit for RecertificationRecertification Limited Recertification OptionRecertification 85032B/E Troubleshooting Troubleshooting Flowchart Troubleshooting ProcessContacting Agilent Returning a Kit or Device to AgilentReturning a Kit or Device to Agilent 85032B/E Replaceable Parts Calibration Kit Storage Case Protective End Caps for ConnectorsReplaceable Parts for the 85032B Calibration Kit Adapters included with Option 100bReplaceable Parts for the 85032B Calibration Kit Replaceable Parts for the 85032E Calibration Kit ESD Protective Devices Connector Cleaning SuppliesReplaceable Parts-Items Not Included in the Calibration Kit WrenchesIntroduction 85032B/E Standard Definitions Table A-1 Standard Class Assignments Standard Class AssignmentsClass Standard Class Label Standard Class Blank FormTable A-2 Standard Class Assignments Blank Form Calibration Kit Label ClassNominal Standard Definitions Setting the System ImpedanceMin Max Table A-3 Standard DefinitionsSystem Z a = 50 Ω Calibration Kit Label Type10C2× 10C3× Standardb Offset Freq Number Type 10C0× 10C1× PsDelayTable A-4 Standard Definitions Blank Form System Z 0 a =Index Index-2 85032B/E Index-3