TestEquity Inc - http://www.testequity.com/ To order, call us at 800-950-3457
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Keysight 8494 Series Manual/Programmable Step Attenuators


 
  • Frequency range: dc to 4/18 GHz
  • Insertion loss at 0 dB: 0.6 dB + 0.09 dB/GHz
  • Max. SWR: 1.5 (8494A, 8494G); 1.5 to 8 GHz; 1.6 to 12.4 GHz, 1.9 to 18 GHz (8494B & 8494H)
  • Repeatability life: 0.03 dB max 5 million cycles per section, typical
  • 5 million cycles per section
  • Maximum RF input power: 1 W (average), 100 W (peak)
  • Connector type: choice of Type-N female, SMA female, APC-7
  • Programming connector: 12-pin Viking, opt. 14-pin DIP (8494G, 8494H)

Each order must include RF connector and (for programmable models) voltage options. See appropriate Quick Fact Sheet.


The Keysight 8494A/B/G/H dc to 18 GHz manual/programmable step attenuators offer exceptional repeatability and reliability. Attenuation is provided in 1 dB steps from 0 to 11 dB. Precision gold-plated leaf springs ensure long-life (over 5 million cycles) and very high attenuator repeatability (typically 0.01 dB). To improve measurement accuracy, NIST traceable data (SWR and attenuation) is available as Option UK6. Custom step attenuator/switch combinations are possible. The Keysight 11716A/B/C interconnect kits provide quick connection of Keysight 8494/5/6/7 1 dB and 10 dB step attenuators in series for greater dynamic range with 1 dB steps.

Attenuation repeatability is specified to be less than 0.03 dB (0.05 dB, 18 to 26.5 GHz) for 5 million cycles per section. This assures low-measurement uncertainty when designed into automatic test systems. Electromechanical step attenuators offer low SWR, low-insertion loss, and high-accuracy required by high-performance test and measurement equipment.

Precision-plated, leaf-spring contacts insert/remove attenuator sections (miniature tantalum nitride thin-film T-pads on sapphire and alumina substrates) from the signal path. Unique process controls and material selection ensure unmatched life and contact repeatability.

Programmable models (8494G/H)
Miniature drive solenoids in the programmable models keep switching time, including settling, down to less than 20 milliseconds. Once switched, strong permanent magnets hold the solenoids (and attenuation value) in place. Current interrupts automatically disconnect solenoid current, simplifying driver circuit design, and minimizing heat dissipation. Programming is done through a 12-pin Viking socket or optional ribbon cables with DIP plugs. Automatic drive control is easy using the GPIB compatible Keysight 11713B or 87130A attenuator/switch driver and an external controller.

8494A and 8494B connect in series with 11716A Attenuator Interconnect Kit, Type-N and 11716C Attenuator Interconnect Kit, SMA.


 

Pricing Information

Keysight 8494A Manual Step Attenuator
DC to 4 GHz, 0 to 11 dB, 1 dB steps 
$1,033.00

Keysight 8494B Manual Step Attenuator
DC to 18 GHz, 0 to 11 dB, 1 dB steps 
$1,544.00

Keysight 8494G Programmable Step Attenuator
DC to 4 GHz, 0 to 11 dB, 1 dB steps 
$1,381.00

Keysight 8494H Programmable Step Attenuator
DC to 18 GHz, 0 to 11 dB, 1 dB steps 
$2,016.00


Options & Accessories

11716A Attenuator Interconnect Kit, Type-N
Connects any pair of Keysight 8494/5/6/7 attenuators in series. 
$465.00

11716C Attenuator Interconnect Kit, Type-SMA
Connects any pair of Keysight 8494/5/6 attenuators in series. 
$372.00

Opt. 001 Type N female connectors
For 8494A, 8494B, 8494G, 8494H 
$0.01

Opt. 002 SMA female connectors
For 8494A, 8494B, 8494G, 8494H 
$0.01

Opt. 003 APC-7 connectors
For 8494B, 8494G 
$388.00

Opt. 003 (8494H-003) APC-7 connectors
 
$518.00

Opt. 011 5 volt operation
Instead of std 24 volt. For 8494G, 8494H 
$0.01

Opt. 016 10-Pins Connector
with a 10-Pins through-hole to 14-Pins dip plug cable. For 8494G, 8494H. 
$0.01

Opt. 024 24 Vdc supply voltage
For 8494G, 8494H 
$0.01

Opt. 060 Viking Connector
With Viking to bare wire cable. For 8494G, 8494H 
$0.01



 
TestEquity Inc - http://www.testequity.com/ To order, call us at 800-950-3457
or visit us on the web: www.TestEquity.com