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281A/B Adapters
Operating and Service
Manual
Manual part number: 00281-90045
Printed in USA
Print Date: May 2001
Supersedes: October 2000
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Notice The information contained in this document is subject to change without notice. Agilent Technologies makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Agilent Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. Agilent Technologies assumes
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What You’ll Find In This Manual… • Overview, page 1 • Specifications, page 2 • Inspection and Shipping, page 3 • Operation, page 5 • Replaceable Parts, page 7 281A/B Operating And Service Manual iii
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Warranty Custom systems are warranted by contractual agreement between Agilent Technologies and the customer. Certification Agilent Technologies, Inc., certifies that this product met its published specifications at the time of shipment from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology (NIST, formerly NBS), to the extent allowed by the Institute’s calibration facility,
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NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. AGILENT TECHNOLOGIES SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. EXCLUSIVE REMEDIES. THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. AGILENT TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY. YEAR 2000. Agilent Technologies warrants that each Agilent Te
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Service and Support By internet, phone, or fax, get assistance with all your test and measurement needs. Online assistance: www.agilent.com/find/assist United States Latin America Canada Europe (tel) 1 800 452 4844 (tel) (305) 269 7500 (tel) 1 877 894 4414 (tel) (+31) 20 547 2323 (fax) (305) 269 7599 (fax) (905) 282-6495 (fax) (+31) 20 547 2390 New Zealand Japan Australia (tel) 0 800 738 378 (tel) (+81) 426 56 7832 (tel) 1 800 629 485 (fax) (+64) 4 495 8950 (fax) (+81) 426 56 7840 (fax) (+61)
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Safety and Regulatory Information Review this product and related documentation to familiarize yourself with safety markings and instructions before you operate the instrument. This product has been designed and tested in accordance with international standards. WARNING The WARNING notice denotes a hazard. It calls attention to a procedure, practice, or the like, that, if not correctly performed or adhered to, could result in personal injury. Do not proceed beyond a WARNING notice until the
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Safety Earth This is a Safety Class I product (provided with a protective earthing terminal). An uninterruptible safety earth ground must be provided from the Ground main power source to the product input wiring terminals, power cord, or supplied power cord set. Whenever it is likely that the protection has been impaired, the product must be made inoperative and secured against any unintended operation. Before Applying Power Verify that the product is configured to match the available main
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Overview Description Agilent 281 adapters provide a convenient means of coupling between waveguide and coaxial systems. Power can be transmitted in either direction, and each adapter covers the full frequency range of its waveguide size with an SWR of less than 1.30. The flanges are lapped to a slight, controlled convexity to assure minimum leakage at the waveguide joint. A probe transforms the waveguide impedance to the 50-ohm impedance of coaxial line. Complete specifications for the ada
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Specifications Specifications Table 1 281A/B Specfications Model Frequency Fits Waveguide Size Equivalent Coaxial Length Weight 1 2 Range (GHz) Nom. OD(in.) EIA Flange Connector (in) (mm) (lb) (kg) X281A 8.20 to 12.40 1 x 1/2 WR90 UG135/U N female 1-7/16 37 1/4 0. 1 3 P281B 12.40 to 18.00 0.702 -0.391 WR62 UG419/U APC-7 1 26 3/16 0. 1 1. Maximum Reflection Coefficient: 0.11 (1.25 SWR) over entire frequency range. 2. Typical maximum power handling capability for the Type N and APC-7 connectors i
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Inspection and Shipping Inspection and Shipping Inspection Mechanical Check If external damage to the shipping carton is evident, the carrier’s agent should be present when the adapter is unpacked. Check the adapter for external damage. If damage is evident, refer to Claims, below, for recommended claim procedure. If the shipping carton is not damaged, check the packaging material for signs of stress that indicate rough handling in transit. If the adapter appears undamaged, perform the elec
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Inspection and Shipping 3. Use enough shock-absorbing material (3 to 4-inch layer) around all sides of the adapter to provide firm cushion and prevent movement inside the container. 4. Seal the shipping container securely 5. Mark the shipping container FRAGILE to assure careful handling. 4 281A/B Adapters Operating and Service Manual
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Operation Operation Protest Flanges Care should be taken to protect the face of the flange from any damage that would prevent close surface-to-surface contact. Any burring, denting, or scratching will increases RF leakage and the reflection coefficient of the joint. The supplied plastic cover should be used to protect the flange when the adapter is not in use. Assemble Carefully When connecting an adapter to a waveguide. 1. Make sure the rectangular ports are oriented the same way (i.e., not
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Operation Precision 7 mm Connectors Except for Option 13, the 281B model adapter has a APC-7 precision 7-mm coaxial connector. These connectors rely on uniform end-to end contact of both conductors for electrical continuity. Consequently, the condition of the contacting surfaces is critical: they should be kept clean and smooth. To prevent damage when the adapter is not in use, the connector’s threaded sleeve should be fully extended. Performance Test The maximum SWR for the Adapters are l
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Replaceable Parts Replaceable Parts The 281A may be disassembled for part replacement, but the 281B should be returned to Agilent because liquid nitrogen and special wrenches and gauges are needed for assembly. The exploded view of Figure 3 gives information for ordering replacement parts and can be used as an assembly guide. To obtain a replacement part give the adapter’s full model number and the part number from Table 2, and address the order to the nearest Agilent Technologies office. F
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Replaceable Parts Table 2 281A Replaceable Parts Item No. Description Model No. Agilent Part No. 1 RF Connector Body X281A 5020-0213 2 Probe Assembly X281A not applicable 1 Probe Body 00281-20025 1 Probe Insulator 00281-20106 3 Probe Case X281A X281A-5 4X-band X281A 00281-20017 Flange Cap (not shown) X-band X281A 5040-0354 P-band P281B 5040-0358 1. This part is a subcomponent of item number 2 (Probe Assembly for X281A). NOTE All 281B adapters should be returned for part replacement. 8 281A/B Ada
