Keysight Technologies 8494 Operating And Service Manual
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Keysight Technologies 8494 Operating And Service Manual

Keysight Technologies 8494 Operating And Service Manual

Attenuators
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Keysight 8494/95/96G/H
Attenuators
Operating and
Service Manual

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  • Page 1 Keysight 8494/95/96G/H Attenuators Operating and Service Manual...
  • Page 2 FAR 27.401 or DFAR could result in personal injury or death. 227.7103-5 (c), as applicable in any Do not proceed beyond a WARNING technical data. notice until the indicated conditions are fully understood and met. Keysight 8494/95/96G/H Operating and Service Manual...

  • Page 3: Certification

    Certification Keysight Technologies certifies that this product met its published specifications at the time of shipment from the factory. Keysight 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...

  • Page 4: Waste Electrical And Electronic Equipment (Weee) Directive

    To contact Keysight for sales and technical support, refer to the support links on the following Keysight websites: – www.keysight.com/find/attenuators (product-specific information and support, software and documentation updates) – www.keysight.com/find/assist (worldwide contact information for repair and service) Keysight 8494/95/96G/H Operating and Service Manual...

  • Page 5: Table Of Contents

    ........29 Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 6 ........33 Keysight 8494/95/96G/H Operating and Service Manual...

  • Page 7: List Of Figures

    ..26 Figure 3-1 Operator’s check setup ......31 Keysight 8494/95/96G/H Operating and Service Manual...
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  • Page 9: List Of Tables

    ......25 Table 3-1 Attenuator and SWR settings ....31 Keysight 8494/95/96G/H Operating and Service Manual...
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  • Page 11 Keysight 8494/95/96G/H Detectors Operating and Service Manual Introduction Product Overview Specifications This manual contains operating instructions for the 8494/95/96G/H Attenuators. Included in the manual is information required to install and test these attenuators.

  • Page 12: Introduction

    The slab lines are flexed by the solenoid plungers to make contact with either the attenuator card or the thru-line. The slab line contacts are gold plated leaf springs which ensure long life and extremely high repeatability. Figure 1-1 Typical four-section attenuator schematic diagram Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 13 70 dB. – The 8496G/H are four-section attenuators with a maximum attenuation of 110 dB. Table 1-1 8494G/H attenuator switching order 8494G/H attenuator sections Attenuation (dB) 1 dB 2 dB 3 dB 4 dB Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 14 8495G/H attenuator switching order 8495G/H attenuator sections Attenuation (dB) 10 dB 20 dB 40 dB Table 1-3 8496G/H attenuator switching order 8496G/H attenuator sections Attenuation (dB) 10 dB 20 dB 30 dB 40 dB Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 15 20 milliseconds switching time. [1] For serial number prefixes below 1722A, change 125 mA to 110 mA. Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 16 10 μs. 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. Keysight 8494/95/96G/H Operating and Service Manual...

  • Page 17: Instrument Options

    10-pin connector with 10-pin through to 14-pin dip plug, 16-inch DC ribbon cable Viking connector with Viking bare wire cable [a] Option 003 is not available on the 8495G. [b] Option 024 and 060 are default options unless specified otherwise. Keysight 8494/95/96G/H Operating and Service Manual...

  • Page 18: Specifications

    0 dB to 110 dB in 10 dB steps Attenuation accuracy (±dB): (Referenced from 0 dB) Table 1-6 Attenuation accuracy 8495G/H 8494G/H 8494G 8494H 8495G 8495H 8496G 8496H 8496G/H Attenuation DC–4 DC–12.4 12.4-18 DC–4 DC–12.4 12.4-18 DC–4 DC–12.4 12.4-18 selection (dB) Keysight 8494/95/96G/H Operating and Service Manual...

  • Page 19: Maximum Swr

    12.4 to 18 Maximum residual attenuation Table 1-8 Maximum residual attenuation Instrument Maximum residual attenuation 8494G, 8494H 0.6 dB + 0.09 dB/GHz 8495G, 8495H 0.4 dB + 0.07 dB/GHz 8496G, 8496H 0.6 dB + 0.09 dB/GHz Keysight 8494/95/96G/H Operating and Service Manual...

  • Page 20: Attenuation Repeatability

    Thru-line Atten card Thru-line Atten card Thru-line Atten card Thru-line Atten card coil Cable wire color code Connector plug pin number 8494G/H 0 dB 1 dB 0 dB 2 dB 0 dB 4 dB 0 dB 4 dB Keysight 8494/95/96G/H Operating and Service Manual...

  • Page 21: Operating Life

    Jack. front view Plug. front view Option 060 Plug bottom view Option 016 Figure 1-3 Solenoid cable pin configuration Operating life 5 million cycles per section. Switching speed Maximum 20 milliseconds including settling time. Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 22 Introduction THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 23 Operating and Service Manual Environmental Specifications & Physical Dimensions Environmental Specifications Physical Dimensions This chapter contains the environmental tests on the 8494/95/96G/H Attenuators that fully comply with Keysight Technologies' product operating environmental specifications. The physical dimensions are illustrated in the later section.

  • Page 24: Environmental Specifications & Physical Dimensions

    Environmental Specifications & Physical Dimensions Environmental Specifications The 8494/95/96G/H Attenuators are designed to fully comply with Keysight Technologies' product operating environmental specifications as shown in Table 2-1. Table 2-1 Environmental specifications Characteristic Value Temperature Operating 0 °C to +55 °C Storage -40 °C to +75 °C...

  • Page 25: Physical Dimensions

    Environmental Specifications & Physical Dimensions Physical Dimensions Table 12 shows the physical dimensions of the 8494/95/96G/H Attenuators. Table 2-2 Physical dimensions Instrument Dimensions Weight 8494G/H 16 oz Figure 2-1 8496G/H 454 g 12 oz 8495G/H Figure 2-1 340 g [a] Dimensions are for general information only. If dimensions are required for building special enclosures, contact your Keysight field engineer.
  • Page 26 Environmental Specifications & Physical Dimensions Figure 2-1 Dimensions of 8494/95/96G/H attenuators Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 27 This chapter describes the installation of the 8494/95/96G/H Attenuators. The operating instruction quick-check procedure is included for verification test prior to usage. Service instructions on the repair and maintenance of the 8494/95/ 96G/H Attenuators are also included in this chapter.

  • Page 28: Operating Guides

    Keysight 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 Keysight Technologies nearest to you. Attach a tag indicating the type of service required, return address, model number and serial number.

  • Page 29: Mating Connectors

    (Pl) with the jack (Jl) 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. Keysight 8494/95/96G/H Operating and Service Manual...

  • Page 30: Operating Instructions

    The SWR meter used in this check is calibrated for a square-law detector. NOTE Therefore, the range changes and errors (read in dB) are twice that indicated by the meter. Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 31 8496G/H 8496G/H 8496G/H 8496G/H Set to 0.0 Set to 0.5 0.40 1.40 0.60 1.60 0.90 0.30 1.10 0.70 1.35 1.25 1.65 1.75 1.85 0.15 2.15 0.85 0.35 1.10 0.65 1.90 0.85 0.00 1.15 1.00 Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 32 8496G/H 1.30 0.90 1.70 2.10 1.80 -0.15 2.20 1.15 0.30 0.75 0.70 2.25 0.80 -0.30 1.20 1.30 1.75 0.60 1.75 2.40 [a] Adjust range by 2 dB, if needed, to obtain an on-scale indication Keysight 8494/95/96G/H Operating and Service Manual...

  • Page 33: Performance Tests

    The 8494/95/96G/H does not have internal adjustments and should not be opened; it should only be repaired by service-trained personnel. Should it become necessary to return the 8494/95/96G/H for repair or service, contact your nearest Keysight Sales and Service Center. Refer to “Sales and Technical Support”...
  • Page 34 Operating Guides THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 8494/95/96G/H Operating and Service Manual...
  • Page 35 This information is subject to change without notice. Always refer to the English version at the Keysight website for the latest revision. © Keysight Technologies 2014 - 2019 Edition 7, January 10, 2019 Printed in Malaysia *08495-90025* 08495-90025 www.keysight.com...

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8496h84958496g

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