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Keysight 8494/95/96A/B Attenuators
Operating and Service Manual

23

4

Operating Guide

Operating Instructions

Performance Tests

Service Instructions

This chapter provides simple quick-check instructions to verify the attenuators’

functionality prior to usage. It also provides information on service and

maintenance of the attenuators.

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Содержание 8494

Страница 1: ......

Страница 2: ...ese rights customarily provided to the public to use modify reproduce release per form display or disclose commercial computer software or commercial com puter software documentation No additional government requirements beyond those set forth in the EULA shall apply except to the extent that those terms rights or licenses are explicitly required from all providers of commercial computer software ...

Страница 3: ...ition 10 Gs 6 ms on six sides three blows Non operating condition 500 Gs 1 8 ms in six directions Vibration 5 Gs 34 Hz to 2000 Hz EMC Radiated interference is within the requirements of MIL STD 461 RE02 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 prod...

Страница 4: ...ified as a Monitoring and Control Instrument product The affixed product label is as shown below Do not dispose in domestic household waste To return this unwanted instrument contact your nearest Keysight Service Center or visit http about keysight com en companyinfo environment takeback shtml for more information Sales and Technical Support To contact Keysight for sales and technical support refe...

Страница 5: ...oduct Overview 12 2 Installation Initial Inspection 14 Instrument Options 15 Mating Connectors 15 Installation Instructions 16 3 Specifications Specifications 18 Frequency range and attenuation 18 Attenuation accuracy 18 Maximum SWR 19 Maximum residual attenuation 19 Attenuation repeatability 19 RF power handling capability 20 Operating life 20 Physical specifications 20 4 Operating Guide Operatin...

Страница 6: ...6 Keysight 8494 95 96A B Operating and Service Manual Service Instructions 27 Adjustment 27 Repair 27 Maintenance 27 ...

Страница 7: ...Keysight 8494 95 96A B Operating and Service Manual 7 List of Figures Figure 3 1 Dimensions of Keysight 8494 95 96A B Attenuators 21 Figure 4 1 Operator s check setup 25 ...

Страница 8: ...8 Keysight 8494 95 96A B Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 9: ...strument options 15 Table 3 1 Frequency range and attenuation 18 Table 3 2 Attenuation accuracy 18 Table 3 3 Maximum SWR 19 Table 3 4 Maximum residual attenuation 19 Table 3 5 Physical specifications 20 Table 4 1 Attenuator switching order 24 Table 4 2 Attenuator and SWR settings 26 ...

Страница 10: ...10 Keysight 8494 95 96A B Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 11: ...Keysight 8494 95 96A B Attenuators Operating and Service Manual 11 1 Introduction Product Overview 12 This chapter provides an overview of the Keysight 8494 95 96A B Attenuators ...

Страница 12: ...is a four section attenuator with a range of 0 dB to 110 dB in 10 dB steps The attenuator sections are 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...

Страница 13: ...ting and Service Manual 13 2 Installation Initial Inspection 14 Instrument Options 15 Mating Connectors 15 Installation Instructions 16 This chapter provides you important information on how to check and prepare your instrument for operation ...

Страница 14: ... Sales and Technical Support on page 4 of this manual Keysight Technologies will arrange for repair or replacement of the damaged or defective equipment Keep the shipping materials for the carrier s inspection 3 If you are returning the instrument under warranty or for service repackaging the instrument requires original shipping containers and material or their equivalents Keysight Technologies c...

Страница 15: ... 002 male SMA connectors must be used For Option 003 APC 7 mating connectors must be used Table 2 1 Instrument options Option Connector description 001 Both connectors Type N female 002 Both connectors SMA female 003 a a Option 003 is not available with the 8494A 8495A and 8496A Both connectors APC 7 CAUTION When installing the instrument make sure that the connectors do not support weight or bear...

Страница 16: ...or without the base The base is removed by unscrewing the two fillister head screws from the bottom of the base The attenuator may be mounted without the base by inserting two 4 40 screws into the screw holes in the bottom of the attenuator Removing the base and mounting the attenuator does not affect the performance of the attenuator ...

Страница 17: ...Keysight 8494 95 96A B Attenuators Operating and Service Manual 17 3 Specifications Specifications 18 This chapter provides the specifications of the 8494 95 96A B attenuators ...

Страница 18: ... 10 dB 10 dB 10 dB Table 3 2 Attenuation accuracy 8494A B 8495A B 8496A B 8494A 8494B 8495A 8495B 8496A 8496B Attenuation selection dB dc to 4 GHz dc to 12 4 GHz 12 4 to 18 GHz dc to 4 GHz dc to 12 4 GHz 12 4 to 18 GHz dc to 4 GHz dc to 12 4 GHz 12 4 to 18 GHz 1 10 0 2 0 3 0 7 0 2 0 5 0 6 0 2 0 5 0 6 2 20 0 2 0 3 0 7 0 4 0 7 0 8 0 4 0 7 0 8 3 30 0 3 0 4 0 7 0 5 0 9 1 2 0 5 0 9 1 2 4 40 0 3 0 4 0 7...

Страница 19: ...Specifications 3 Keysight 8494 95 96A B Operating and Service Manual 19 Maximum SWR Maximum residual attenuation Attenuation repeatability 0 03 dB max 5 million cycles per section Table 3 3 ...

Страница 20: ...cal specifications Table 3 5 Physical specifications Instrument Dimensions a a Dimensions are for general information only If dimensions are required for building special enclosures contact your Keysight field engineer Weight b b Weight and width of the instrument vary with the option selected due to the type of connectors 8494A B Per Figure 3 1 15 oz 425 g 8495A B Per Figure 3 1 11 oz 312 g 8496A...

Страница 21: ... 11 101 60 4 00 1 129 03 5 08 2 83 30 3 28 1 111 00 4 37 2 9 15 0 36 4 40 UNC x 5 11 mm 20 deep Mounting holes 2 this side only 22 4 0 88 11 2 0 44 12 5 0 49 76 2 3 000 1 103 7 4 084 2 1 Keysight 8495A B 2 Keysight 8494A B 8495D 8496A B 11 4 0 45 22 9 0 90 19 0 0 730 7 4 0 29 38 1 1 50 56 1 2 21 Note Base can be removed by user to access mounting holes as shown Dimensions are in mm inches nominal ...

Страница 22: ...3 Specifications 22 Keysight 8494 95 96A B Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 23: ...Operating Guide Operating Instructions 24 Performance Tests 27 Service Instructions 27 This chapter provides simple quick check instructions to verify the attenuators functionality prior to usage It also provides information on service and maintenance of the attenuators ...

Страница 24: ...Keysight 8494 95 96A B Operating and Service Manual Operating Instructions After the instrument is connected the attenuation may be selected Turn counterclockwise to increase attenuation or clockwise to decrease attenuation ...

Страница 25: ...e 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 Figure 4 1 Operator s check setup CAUTION Do not attempt to force the switch between 0 and the highest value position as there is a stop between these switch positions NOTE The SWR meter used in this check is...

Страница 26: ...indicates within the limits shown Table 4 2 Attenuator and SWR settings SWR meter range dB Attenuation dB Meter indication dB Minimum Actual Maximum 8494A B 8495A B 8496A B 8494A B 8495A B 8496A B 8494A B 8495A B 8496A B 8494A B 8495A B 8496A B 8494A B 8495A B 8496A B 10 2 0 0 0 Set to 0 0 Set to 0 5 10 6 1 10 10 0 40 1 40 0 60 1 60 10 12 2 20 20 0 90 0 30 1 10 0 70 10 16 3 30 30 1 35 1 25 1 65 1 ...

Страница 27: ...ng the procedure in the analyzer s operating manual Service Instructions Adjustment The Keysight 8494 95 96A B Attenuators do not have internal adjustments and should not be opened Repair The Keysight 8494 95 96A B 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 co...

Страница 28: ...4 Operating Guide 28 Keysight 8494 95 96A B Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 29: ...ct to change without notice Always refer to the English version at the Keysight website for the latest revision Keysight Technologies 2011 2016 Edition 5 June 30 2016 Printed in Malaysia 08494 90008 08494 90008 www keysight com ...

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