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10m semi anechoic chamber

10 meter semi anechoic chamber

The main purpose of a 10m semi anechoic chamber is to perform measurements of radiated emission or immunity from electronic products at 10 and/or 3 mtr measurement range length. The combination of the pan-type 2mm galvanized panel system and the polystyrene hybrid absorbers on the walls and ceiling eliminates unwanted reflections and complies with international emission test standards. The 10m semi anechoic chamber is a multi functional EMC test chamber for commercial, military and automotive testing.

Features of a 10m semi anechoic chamber:

  • Full compliance emission test site for frequency range of 30MHz to 18GHz as per CISPR 16-1-4
  • Full compliance immunity test site for frequency range of 80MHz to 6GHz as per IEC/EN 61000-4-3
  • Shielding effectiveness according to EN 50147-1 (>80dB at 10kHz)

Applicable standards / test methods for a 10m semi anechoic chamber:

  • CISPR 16-1-4
  • IEC/EN 61000-4-3
  • ANSI C63.4
  • FCC 15

Typical performance of a 10m semi anechoic chamber:

  • NSA: +/- 4.0dB
  • sVSWR: ≤ 6dB
  • FU: 75% of 16 points ≤ 6dB at 3m test distance & 1,5 x 1,5m test window (0,8m above floor level)

Typical specifications for a 10m semi anechoic chamber:

Personnel door
EUT door
Wall entry pane
EUT power line
Frequency range
Test distance
Test volume*
Turn table:
Antenna mast:
18.90 x 11.40 x 8,175 m (l*w*h)
2mm ZMA-140 galvanized shielding panels with a free standing structural steel support
Hybrid solution of ferrite tiles and polystyrene absorber (model HT45) on walls and ceiling
Honeycomb model 1791-6060 (600x600mm / 18GHz)
RF shielded swing door model 1766-0921 (900x2100mm)
RF shielded sliding door model 1755-3030 (3000x3000mm) incl. lift platform
Model 1795-3060 (300x600mm) including RF connectors
Filtered 400VAC / 32A / three phase model 4803-032
CDMT lights 150W  model 1830-150
30MHz to 18GHz for radiated emission and 80MHz to 6GHz for radiated immunity
10m and 3m between centre of antenna and EUT
4m, single axis (double axis is possible upon request)
Reflective ground plane with floor entry panels incl. RFconnectors
Fiber optic controlled turn table 4m diameter
Fiber optic controlled antenna mast

* Other test volume dimensions available upon request.

In addition to the typical specification of the 10m semi anechoic chamber Comtest can tailor the chamber’s specification to satisfy our customers’ individual requirements.

Options for a 10m semi anechoic chamber:

  • An additional shielded room can be installed to house high power RF amplifiers (amplifier room) or control and test      equipment (control room).
  • Video and audio monitoring system: 2 pcs color camera units with remote controllers and LCD monitors.