The Agilent Technologies 8490D family
is a line of precision fixed coaxial
attenuators with performance specified
up to 50 GHz. These attenuators use
the 2.4 mm coaxial connector, which
exhibits excellent performance from
dc to 50 GHz. The 8490D family has
attenuation values of 3, 6, 10, 20, 30,
and 40 dB.
The Agilent 8490D family of 2.4 mm
fixed coaxial attenuators is assembled
and tested with the same meticulous
care as their lower frequency counterparts: the Agilent 8491, 8492, and
8493 families. These attenuators are
all tested on Agilent precision analyzers to assure specifications over the
full frequency range.
Applications
Ruggedness, reliability, and small size
make these attenuators useful both on
the bench and in systems applications.
With their accuracy and low SWR they
are ideally suited for extending the
range of sensitive power meters for
higher power measurements. The same
characteristics lend themselves to
applications such as calibration standards and RF substitution measurements. With their broad dc to 50 GHz
frequency range and reasonable cost,
general applications such as the
reduction of power level to sensitive
components and instrumentation systems are attractive and appropriate
uses for these attenuators.
Optional test data
Use of test data is an effective means
of reducing measurement uncertainty
at RF and microwave frequencies. This
data is available for the 8490D as
Option 890. Data is generated by an
automatic network analyzer and is
supplied as a tabulated list of attenuation and SWR at every 400 MHz from
400 MHz to 50 GHz. Measurements are
directly traceable to NIST standards,
and feature very low uncertainties.
Agilent 8490D
Coaxial Attenuators
Product Overview
dc to 50 GHz
2.4 mm connectors
2
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Phone or Fax
United States:
(tel) 800 452 4844
Canada:
(tel) 877 894 4414
(fax) 905 282 6495
China:
(tel) 800 810 0189
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Product specifications and descriptions in this document
subject to change without notice.
© Agilent Technologies, Inc. 2002
Printed in USA, May 30, 2002
5963-9931E
Atten.
Data
Uncert.
Attenuation(dB) SWR(Maximum) (dB)
Options Min. Max. Max.
(GHz) (GHz) (GHz) (GHz) (GHz) (GHz) (GHz)
0 to 50 0 to 26.5 26.5 to 50 0 to 26.5 26.5 to 40 40 to 50 0.4 to 50
8490D-003 2.5 3.9 4.8 1.15 1.25 1.45 ±0.6
8490D-006 5.4 6.9 7.8 1.15 1.25 1.45 ±0.6
8490D-010 9.4 10.9 11.3 1.15 1.25 1.45 ±0.6
8490D-020 19.2 21.3 21.7 1.15 1.25 1.45 ±0.6
8490D-030 29.2 31.3 31.7 1.15 1.25 1.45 ±0.8
8490D-040 38.2 42.5 42.5 1.08 1.15 1.25 ±1.7
Specifications
Korea:
(tel) (82 2) 2004 5004
(fax) (82 2) 2004 5115
Latin America:
(tel) (305) 269 7500
(fax) (305) 269 7599
Taiwan:
(tel) 0800 047 866
(fax) 0800 286 331
Other Asia Pacific
Countries:
(tel) (65) 6375 8100
(fax) (65) 6836 0252
Email:
tm_asia@agilent.com
Specifications
Frequency range dc to 50 GHz
Impedance (nominal) 50 Ω
Connector 2.4 mm
Power (maximum) 1 W average;
100 W peak
Environmental
Temperature
Operating –5°C to +50°C
Non-operating –55°C to +75°C
Altitude
Operating 15,000 ft
Non-operating 50,000 ft
Humidity Cycling, 5 days,
+40°C @ 95% R.H.
Vibration 0.015 in., 5-55-5 Hz,
14 min., 3 axes
Shock 100 g, 1 to 2 ms,
3 times, 3 planes
Dimensions
Length
27 mm (1.06 in.) 3, 6, 10, 20 dB
29 mm (1.14 in.) long 30, 40 dB
Diameter
8 mm (.312 in.)
Ordering information
Coaxial attenuator
8490D dc to 50 GHz, 2.4 mm
coaxial connector
Options
To add options to a product, use the
following ordering scheme:
Model: 8490D
Model options: 8490D-opt#1
8490D-opt#2
Attenuation (must choose one)
8490D-003 3 dB attenuation
8490D-006 6 dB attenuation
8490D-010 10 dB attenuation
8490D-020 20 dB attenuation
8490D-030 30 dB attenuation
8490D-040 40 dB attenuation
Calibration Documentation (optional)
8490D-UK6 Calibration data
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