Anechoic Chamber
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Anechoic Chamber(3m Method)
Features
- Qualified for various registrations (FCC Listing, VCCI approval)
- Using ferrite absorber (TFA) only which allows for various standard certifications (ALC-3F). Additional radio wave matching device (ALC-3N) is available for the frequency ranges from 30 MHz to 18 GHz.
- Standard-equipped storage room for amplifiers for the use in the immunity test.
- GP-IB controllable attached facilities for automatic instrumentation in a short time.
- Easy transportation of large-sized devices by adoption of barrier-free type doors (optional)
3 Method Anechoic Chamber
3 Method Anechoic Chamber
Standard Specifications
Type |
ALC-3F |
ALC-3N |
ALC-3NH |
| Shield inside dimensions(m) |
|
|
Site attenuation characteristic(dB)
(ANSI C63.4 sweep frequency)
(1GHz and above: correlative with an open field test site) |
|
|
|
Field distribution uniformity characteristic(dB)
(IEC61000-4-3 conforming) |
0 to 6(at 80 to 1000MHz)
(Floor type absorber )
|
Shield
effectiveness(dB)
(IEEE-STD 299-1997 conforming) |
100(at 150kHz to 1000MHz)
60(at 1GHz to 18GHz)
|
Insertion
loss(dB)
(MIL STD-220A conforming)
|
|
| Radio wave absorber |
Ferrite radio wave absorber(TFA)
|
Ferrite radio wave absorber (TFA)
+ Radio wave matching device
(T=35cm)
|
Ferrite radio wave absorber(TFA)
+ Radio wave matching device
(T=60cm, 1m)
|
Measuring chamber shield inside dimensions(m)
(including an amplifier room) |
|
Door dimensions
(m) |
Anechoic chamber(1)
Anechoic chamber(2)
Measuring room(3)
|
|
1.5W×2.0H(barrier-free type door is optionally available)
1.0W×2.0H
1.0W×2.0H
|
| Antenna lift |
Lifting range(m)
Lifting speed (sec/m)
|
|
1.0 to 4.0
5 to 25(3-stage selection, GP-IB control)
|
| Turntable |
Dimension(m)
Load capacity(kg)
Rotating speed(rpm)
|
|
1.5
500
1 to 3(3-stage selection, GP-IB control)
|
| Attached facilities |
|
| Power supply |
Power supply panel/Filter panel/Insulating transformer/Lighting, etc.
|
|
| A shortened dipole antenna is used for evaluating the site attenuation characteristic . |
