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Cuming Microwave C-RAM SFC-EM Truncated Pyramidal Absorber View larger

Cuming Microwave C-RAM SFC-EM Truncated Pyramidal Absorber

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  • Optimized for low frequency applications
  • Used mainly in chambers
  • Used for emissions and immunity testing
  • For MIL-STD 461/462D
  • Can handle up to 1.25 W/in2 (2 kW/m2) of RF energy in a temperature controlled room

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Test Equipment Description

The SFC-EM product is similar to standard CRAM SFC pyramidal grades, but the tips of the pyramids are truncated. This saves space in small chambers and provides a more rugged product, eliminating the possibility of tip breakage.

C-RAM SFC EM products are specifically optimized for low frequency applications and are used mainly in chambers used for emissions and immunity testing.

C-RAM SFC-24 EM meets the requirements for MIL-STD 461/462D.

C-RAM SFC-36 EM and C-RAM SFC-24 EM, in an appropriate combination in a chamber, are an ideal absorber treatment for Immunity Test Chambers (EN 1000-4-3 and equivalent specifications).

Typically, C-RAM SFC absorbers can handle up to 1.25 W/in2 (2 kW/m2) of RF energy in a temperature controlled room, but this is dependent upon frequency and application.

All C-RAM SFC-XX EM products are manufactured and supplied as 24 in. x 24 in. panels. The product has all the favorable features of the standard SFC products, including a high level of fire retardancy meeting NRL 8093 Test 1, 2 and 3, MS-8-21 Test 1, 2 and 3 and T.I. drawing 2693066, as well as ASTM E-84-97 Class A.

PHYSICAL CHARACTERISTICS AND TYPICAL REFLECTIVITY AT NORMAL INCIDENCE
GRADEHeight in. (mm)Weight
lbs. (kg)
Reflectivity (MHz)
80250500100010,000
SFC-24EM20 (510)17 (7.7)-8-24-35-38<-40
SFC-36EM31 (760)25 (11.4)1329-37-40<-40
SFC-48EM42 (1067)35 (16)16-32-39<-40<-40

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