Agilent 8495D, 8495K Manual/Programmable Step Attenuators
Contents
1. ICES NMB 001 Cet appareill ISM est conforme a la norme NMB 001 du Canada This text indicates that the instrument is an Industrial Scientific and Medical ISM 1 A Group 1 Class A product CISPER 11 Clause 4 This symbol indicates the time period during which no hazardous or toxic substance elements are expected to leak or deteriorate during normal use Forty years is the expected useful life of the product Agilent 8495D K Attenuators Operating and Service Manual Contacting Agilent For more information please contact your nearest Agilent office Americas Canada Latin America United States Asia Pacific Australia China Hong Kong India Japan Korea Malaysia Singapore Taiwan Thailand Europe Austria Belgium Denmark Finland France Germany Ireland Italy Netherlands Spain Sweden Switzerland French Switzerland German United Kingdom Other European Countries 877 894 4414 305 269 7500 800 829 4444 1 800 629 485 800 810 0189 800 938 693 1 800 112 929 81 426 56 7832 080 769 0800 1 800 888 848 1 800 375 8100 0800 047 866 1 800 226 008 0820 87 44 11 32 0 2 404 93 40 45 7013 15 15 358 0 10 855 2100 0825 010 700 01805 24 6333 1890 924 204 39 02 92 60 8484 31 0 20 547 2111 34 91 631 3300 0200 88 22 55 41 21 8113811 Opt 2 0800 80 53 53 Opt 1 44 0 118 9276201 www agilent com find contactus Or go to www agilent com find assist for more informa2. 75 C lt 95 relative lt 95 relative lt 4600 m 15000 ft lt 7600 m 25000 ft 10 Gs six ms on six sides three blows 500 Gs 1 8 ms in six directions 5 Gs 34 Hz to 2000 Hz Radiated interference is within the requirements of MIL STD 461 REO2 20 Agilent 8495D K Attenuators Operating and Service Manual Environmental Specifications amp Physical Dimensions 2 Physical Dimensions Table 8 shows the physical dimensions of the Agilent 8495D K Attenuators Table 8 Physical Dimensions Instrument Dimensions Weight 8495D Per Figure 4 15 oz 425g 8495K Per Figure 5 16 oz 454 g 1 Dimensions are in millimeters and inches Dimensions are for general information only If dimensions are required for building special enclosures contact your Agilent field engineer Agilent 8495D K Attenuators Operating and Service Manual 21 2 Environmental Specifications amp Physical Dimensions 83 30 3 28 111 00 4 37 SMA jack 2 101 60 4 00 129 03 5 08 83 30 3 28 2 4 40 UNC x 5 11 mm 20 deep Mounting holes 2 this side only 0 75 1 Agilent 8495A B Agilent 8494A B 8495D 8496A B 76 2 3 000 103 7 4 084 Note Base can be removed _ by user to access mounting pa A Dimensions are in mm inches nominal unless otherwise specified Figure 4 Dimensions of Agilent 8495D Attenuator 22 Agilent 8495D K Attenuators Opera
3. lt 4 ti From Ox i Di f i solenoid lt 8 driver i ust es a MK 71 E circuits i i CDK 6 i i o o i 1 I KI 1 i e e K 24 Vdc i H DK 5 i o O f Q 2 Thru line Thru line i Thru line Thru line B Wire i j i i RE color RF input i Figure 1 8495K Programmable Four Section Attenuator Schematic Diagram In the 8495K each solenoid requires a drive of 20 V to 30 V The switching current is approximately 125 mA at 24 Vdc per section for the 8495K The solenoid switching time is less than 20 milliseconds including settling time Once switched the solenoid plungers are held in place by permanent magnets and the solenoid plungers automatically disconnect the selected coil drive and connect the opposite coil drive see Figure 1 on page 11 and Figure 3 on page 14 Agilent 8495D K Attenuators Operating and Service Manual 11 1 Introduction CAUTION Table 1 Attenuator Switching Attenuation dB 10 dB Attenuator Sections 2 20 dB 20 dB 20 dB 10 20 1 30 wo 40 50 60 70 1 D model only 2 K model only Do not exceed the RF power rating of 1 W average or 100 W peak with a maximum pulse width of 10 us Do not connect an attenuator RF input or output connector to greater than 7 Vdc If the attenuator must be connected to a device with a potential greater than 7 Vdc use a blocking capacitor Supplied A
4. milliseconds including settling time 16 Agilent 8495D K Attenuators Operating and Service Manual Maximum SWR Table6 Maximum SWR Introduction 1 Instrument Frequency Range GHz Maximum SWR 8495D 8495K dc to 6 0 1 25 6 0 to 12 4 1 45 12 4 to 18 0 1 9 18 0 to 26 5 2 2 Operating Life 5 million cycles per section Agilent 8495D K Attenuators Operating and Service Manual 17 1 Introduction This page is intentionally left blank 18 Agilent 8495D K Attenuators Operating and Service Manual Agilent 8495D K Attenuators Operating and Service Manual 2 Environmental Specifications amp Physical Dimensions Environmental Specifications 20 Physical Dimensions 21 This chapter contains the environmental tests on the Agilent 8495D K Attenuators that fully comply with Agilent Technologies product operating environmental specifications The physical dimensions are illustrated in the later section fe Agilent Technologies 2 Environmental Specifications amp Physical Dimensions Environmental Specifications The Agilent 8495D K Attenuators are designed to fully comply with Agilent Technologies product operating environmental specifications as shown in Table 7 Table 7 Environmental Specifications Temperature Operating Storage Humidity Operating Storage Altitude Operating Storage Shock Operating Non operating Vibration Operating EMC 0 C to 55 C 40 C to
5. 95D K Attenuators Operating and Service Manual Certification Agilent Technologies 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 extend allowed by the Institute s calibration facility and to the calibration facilities of the other International Standards Organization members WEEE Compliance This product complies with the WEEE Directive 2002 96 EC marking requirements The affixed label indicates that you must not discard this electrical electronic product in domestic household waste Product Category With reference to the equipment types in the WEEE Directive Annex I this product is classed as a Monitoring and Control Instrumentation product Do not dispose in domestic household waste To return unwanted products contact your local Agilent office or see www agilent com for more information Agilent 8495D K Attenuators Operating and Service Manual 3 Regulatory Markings CE The CE mark is a registered trademark of the European Community If it is accompanied by a year it indicates the year the design was proven Ge The CSA mark is a registered trademark of the Canadian Standards Association This text indicates that this ISM device complies with Canadian ICES 001
6. Agilent 8495D K Attenuators Operating and Service Manual Brae Agilent Technologies Notices Agilent Technologies Inc 2011 No part of this manual may be reproduced in any form or by any means including elec tronic storage and retrieval or translation into a foreign language without prior agree ment and written consent from Agilent Technologies Inc as governed by United States and international copyright laws Manual Part Number 08495 90027 Edition Third Edition January 2011 Printed in Malaysia Agilent Technologies Inc Phase 3 Bayan Lepas Free Industrial Zone Bayan Lepas Penang 11900 Malaysia Warranty The material contained in this docu ment is provided as is and is sub ject to being changed without notice in future editions Further to the max imum extent permitted by applicable law Agilent disclaims all warranties either express or implied with regard to this manual and any information contained herein including but not limited to the implied warranties of merchantability and fitness for a par ticular purpose Agilent shall not be liable for errors or for incidental or consequential damages in connec tion with the furnishing use or per formance of this document or of any information contained herein Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms the warranty terms in t
7. C Driver Circuit 3 or 4 required Jl w 6 gt Atten card pin 5 gt Thru line pin Switch or relay contacts 1 gt Solenoid drive pin 24 Vdc Typical Solenoid Relay or Switch Driver 3 or 4 required Typical Solenoid Coil Driver Circuit Agilent 8495D K Attenuators Operating and Service Manual Introduction 1 Specifications Frequency Range and Attenuation Table 3 Frequency Range and Attenuation Frequency Range dc to 26 5 GHz Attenuation 0 dB to 70 dB in 10 dB steps Attenuation Accuracy Table4 Attenuation Accuracy Attenuation Accuracy dB referenced from 0 dB Attenuation dc 6 0 GHz 6 0 12 4GHz 12 4 18 0GHz 18 0 26 5 GHz Selection dB 10 0 3 0 4 0 5 0 7 20 0 5 0 5 0 6 0 8 30 0 6 0 7 0 8 1 0 40 0 7 0 9 1 1 1 5 50 0 8 1 0 1 2 1 6 60 1 0 1 3 1 4 1 9 70 1 1 1 5 1 7 2 3 Maximum Insertion Loss 0 4 0 09 f dB where f is the frequency in GHz Agilent 8495D K Attenuators Operating and Service Manual 15 1 Introduction Attenuation Repeatability 0 03 dB max to 18 GHz 0 05 dB max to 26 5 GHz 5 million cycles per section RF Power Handling Capability 1 W average 100 W peak with maximum pulse width of 10 microseconds Solenoid Drive For Agilent 8495K only Table5 Solenoid Drive Solenoid Drive Coil Voltage Switching Current 8495K 20 Vdc to 30 Vdc 125 mA at 24 V approx Switching Speed Maximum 20
8. ccessories A solenoid drive cable is supplied with the 8495K The cable is 1 5 m 5 ft long with a mating connector plug on one end and the other end is unterminated see Figure 2 on page 13 Agilent 8495D K Attenuators Operating and Service Manual Solenoid Cable Connectors Refer also to Figure 2 on page 13 Table 2 Solenoid Cable Connectors Introduction 1 Section Section 1 Section 2 Section 3 Section 4 Power Solenoid Coil Thru Atten Thru Atten Thru Atten Thru Atten v Line Card Line Card Line Card Line Card Cable Wire Color Code PUR YEL BLK GRN ORN BLU BRN WHT RED Connector Plug Pin Number 2 5 6 7 8 9 10 11 12 1 8495K 0dB 10 dB 0dB 20 dB 0dB 20 dB 0dB 20 dB Option 016 13 2 11 5 3 9 4 10 6 Flat Pack Plug Pin Number 1 Five foot cable and mating plug assembly provided 2 Pin 1 red wire is common for all coils Pins 2 3 and 4 are not used 3 Pin 6 is common for all coils Pins 1 7 8 12 and 14 are not used 14 1 Plug front view Figure 2 Solenoid Cable Pin Configuration 8 Plug bottom view 7 Agilent 8495D K Attenuators Operating and Service Manual Jack front view 13 1 14 Introduction Solenoid cable Solenoid driver connector jack Any 75451 dual peripheral AND driver Figure 3 24V Jl 6 gt Atten card pin 1 gt Solenoid drive pin 5 gt Thru line pin Typical Solenoid I
9. fication test prior to usage g Agilent Technologies 25 3 Operating Guides Installation Initial Inspection 26 1 Inspect the shipping container for damage If the shipping container or cushioning material is damaged it should be kept until the contents of the shipment have been checked for completeness and the instrument has been checked both mechanically and electrically e Check for mechanical damage such as scratches or dents e Procedures for checking electrical performance are given under Operator s Check on page 28 or Performance Tests on page 31 If the contents are incomplete if there is mechanical damage or defect or if the instrument does not pass the electrical performance test contact the nearest Agilent Technologies Sales and Service office Refer to the Service and Support information in the front matter of this manual Agilent Technologies will arrange for repair or replacement of the damaged or defective equipment Keep the shipping materials for the carrier s inspection If you are returning the instrument under warranty or for service repackaging the instrument requires original shipping containers and materials or their equivalents Agilent Technologies can provide packaging materials identical to the original materials Refer to Service and Support information in the front matter of this manual for the Agilent Technologies nearest to you Attach a tag indicating the type of service req
10. he sep arate agreement shall control Technology Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accor dance with the terms of such license Restricted Rights Legend U S Government Restricted Rights Soft ware and technical data rights granted to the federal government include only those rights customarily provided to end user cus tomers Agilent provides this customary commercial license in Software and techni cal data pursuant to FAR 12 211 Technical Data and 12 212 Computer Software and for the Department of Defense DFARS 252 227 7015 Technical Data Commercial Items and DFARS 227 7202 3 Rights in Commercial Computer Software or Com puter Software Documentation Safety Notices CAUTION A CAUTION notice denotes a haz ard It calls attention to an operat ing procedure practice or the likes of that if not correctly performed or adhered to could result in dam age to the product or loss of impor tant data Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the likes of that if not correctly performed or adhered to could result in personal injury or death Do not proceed beyond a WARN ING notice until the indicated conditions are fully understood and met Agilent 84
11. read in dB are twice that indicated by the meter Test oscillator 8495D manual SWR meter attenuator Adapter 8495K programmable attenuator Solenoid ae driver circuits l Figure 6 Operator s Check Setup Procedure 1 Connect equipment as shown in Figure 6 on page 29 with the attenuator set to 0 dB 2 Set the test oscillator to 0 3 Vrms at 1 kHz Set SWR meter range to 2 dB expanded and adjust its bandwidth to center of adjustment range Fine tune the oscillator frequency to obtain maximum meter indication 4 Set attenuator and SWR meter range switch as listed in Table 9 and verify that the SWR meter indicates within the limits shown Agilent 8495D K Attenuators Operating and Service Manual 29 3 30 Operating Guides Table9 Attenuator and SWR Settings SWR Meter Attenuation Meter Indication dB Range a6 8495D K Minimum Actual Maximum 2 0 Set to 0 5 6 10 1 20 1 80 12 20 0 15 0 85 16 30 1 05 1 95 2201 40 0 40 1 40 2601 50 0 50 2 50 3211 60 0 60 1 60 36l 70 0 35 2 65 1 Adjust range by 2 dB if needed to obtain an on scale indication Agilent 8495D K Attenuators Operating and Service Manual Operating Guides 3 Performance Tests The Agilent 8495D K Attenuators can be tested to the accuracy of the specifications with a network analyzer or equivalent equipment of suitable accuracy If a network analyzer is available tes
12. se width of 10 microseconds If these limits are exceeded the attenuators may be damaged CAUTION For the 8495K do not ground both solenoid drive pins of the programmable attenuator at the same time This causes rapid cycling of the solenoid and could reduce the operating life of the attenuator The rapid cycling may produce a buzzing sound from the attenuator Operating Information Either RF connector may be used as the input or output connector Connect the solenoid drive cable of the programmable attenuator to the solenoid drive connector Jl By applying the proper voltage and grounds to the proper pins of Jl the attenuator will either increase or decrease the amount of attenuation as selected Operator s Check The Operator s Check is supplied to allow the operator to make a quick check of the instrument prior to use or if a failure is suspected Description The attenuator is driven from a 50 ohm signal source at 1 kHz The output level from the attenuator is detected by a narrow bandwidth voltmeter The attenuator and detector range switches are stepped together and the variations in level noted This verifies that each attenuator section is being properly switched and checks the low frequency accuracy of the attenuator Agilent 8495D K Attenuators Operating and Service Manual Operating Guides 3 The SWR meter used in this check is calibrated for a square law detector Therefore the range changes and errors
13. t instrument using the procedure in the analyzer s operating manual Service Instructions Adjustment The Agilent 8495D K Attenuators do not have internal adjustments and should not be opened Repair The Agilent 8495D K Attenuators are not recommended for repair as most components are not easily removed Maintenance The connectors particularly the connector faces must be kept clean For instruction on connecting and care of your connectors refer to Microwave Connector Care Quick Reference Card 08510 90360 Agilent 8495D K Attenuators Operating and Service Manual 31 3 Operating Guides This page is intentionally left blank 32 Agilent 8495D K Attenuators Operating and Service Manual
14. tenuators Included in the manual is information required to install and test these attenuators Brae Agilent Technologies 9 1 Introduction Product Overview 10 The Agilent 8495D and 8495K are 50 ohm dc to 26 5 GHz O dB to 70 dB in 10 GB steps coaxial attenuators with APC 3 5 connectors Each attenuator is made up of four attenuation sections connected in cascade Each section consists of a precision thin film attenuator card a lossless thru line and a ganged pair of edge line transmission lines The edge lines are flexed to make contact with either the attenuator card or the thru line The edge line contacts are gold plated leaf springs which ensure long life and high repeatability In the 8495D the edge line controls are flexed by low torque cams In the 8495K the edge line controls are flexed by solenoid plungers see Figure 1 Table 1 on page 12 shows the switching arrangement required to increase the amount of attenuation from 0 dB to 70 dB in 10 dB steps In the 8495K to ensure specified performance it is recommended that the attenuator sections shown in the table below be used Also when changing attenuation it is good practice to insert the required sections before deletion of the unneeded sections With the attenuator set for 0 dB attenuation only the insertion loss residual attenuation remains Agilent 8495D K Attenuators Operating and Service Manual Introduction 1 Kr 4 i Li DK E 1 I Kn
15. ting and Service Manual Environmental Specifications amp Physical Dimensions 2 Solenoid drive plug and 5 ft cable supplied 6 3 0 25 dia 101 6 4 00 129 0 5 08 4 40 UNC x 5 1 mm 0 20 Deep mounting Holes 2 both sides 83 3 3 28 111 4 37 Solenoid drive plug detail 76 2 3 00 103 7 4 08 104 9 4 13 1327 5 21 To remove Press at arrows with thumb and finger puli to detach Caution Do not twist Note Base can be removed by user to access mounting holes as shown above 1 Agilent 84956 H Agilent 8494G H 8495K 8496G H 8497K 74 0 29 114 Option 008 0 45 203 8 Option 016 14 Pin IC Plug type Plug top view pins on oher side Figure 5 Dimensions of Agilent 8495K Attenuator Agilent 8495D K Attenuators Operating and Service Manual 23 2 Environmental Specifications amp Physical Dimensions This page is intentionally left blank 24 Agilent 8495D K Attenuators Operating and Service Manual Agilent 8495D K Attenuators Operating and Service Manual 3 Operating Guides Installation 26 Initial Inspection 26 Mating Connectors 27 Installation Instructions 27 Operating Instructions 28 Operating Information 28 Operator s Check 28 Performance Tests 31 Service Instructions 31 This chapter describes the installation of the Agilent 8495D K Attenuators The operating instruction quick check procedure is included for veri
16. tion Agilent 8495D K Attenuators Operating and Service Manual This page is intentionally left blank Agilent 8495D K Attenuators Operating and Service Manual Contents 1 Introduction 9 Product Overview 10 Supplied Accessories Specifications 15 12 Frequency Range and Attenuation 15 Attenuation Accuracy Maximum Insertion Loss 15 15 Attenuation Repeatability 16 RF Power Handling Capability 16 Solenoid Drive 16 Switching Speed 16 Maximum SWR 17 Operating Life 17 2 Environmental Specifications amp Physical Dimensions 19 Environmental Specifications 20 Physical Dimensions 21 3 Operating Guides 25 Installation 26 Initial Inspection 26 Mating Connectors 27 Installation Instructions Operating Instructions 28 Operating Information Operator s Check 28 Performance Tests 31 31 Service Instructions Agilent 8495D K Attenuators Operating and Service Manual 27 28 This page is intentionally left blank Agilent 8495D K Attenuators Operating and Service Manual Agilent 8495D K Attenuators Operating and Service Manual 1 Introduction Product Overview 10 Supplied Accessories 12 Specifications 15 Frequency Range and Attenuation 15 Attenuation Accuracy 15 Maximum Insertion Loss 15 Attenuation Repeatability 16 RF Power Handling Capability 16 Solenoid Drive 16 Switching Speed 16 Maximum SWR 17 Operating Life 17 This manual contains operating instructions for the Agilent 8495D K At
17. uired return address model number and serial number Mark the container FRAGILE to insure careful handling In any correspondence refer to the instrument by model number and serial number Agilent 8495D K Attenuators Operating and Service Manual Operating Guides 3 Mating Connectors The APC 3 5 connector is a 3 5 mm air line connector that will mate with the SMA type connectors The SWR performance of this hybrid connection is similar to a mated pair of SMA connectors when used within the frequency range of the SMA connector Option The attenuators are configured with the APC 3 5 female connectors and are designated as Option 004 CAUTION When installing the instrument make sure that the connectors do not support weight or bear torque The preferred procedure is to set up all equipment in position before connecting the instrument Either connector may be used as the input or output connector Installation Instructions The 8495K solenoid drive cable connector plug is connected by aligning the plug P1 with the jack J1 on the attenuator and then pushing the plug over the jack The plug is removed by grasping the ribbed sides of the plug and squeezing them together while pulling back until the plug clears the jack Agilent 8495D K Attenuators Operating and Service Manual 27 3 Operating Guides Operating Instructions 28 CAUTION Do not apply RF power greater than 1 W average or 100 W peak with a maximum pul
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