Anechoic Chamber
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Small-sized Anechoic Chamber (3m Method)
Features
- Exclusively for small-size. Standardized for the purpose offrequent use of EMI/EMS
- Thin type turntable design (approx. 20 cm) allowing for the flat floor. Also installable within an existing building (height: approx. 3.5 m)
- In EMI measurement in EMI specification (ALC-3SL/ALC-3S), correlation with actual results is easily obtained as the earth-reflected wave is utilized, as in the measurement at open field test site. EMS specifications (ALC-3W) is suitable to comparative measurement using correction values because of simplified application method.
- Ferrite radio wave absorber (TFA) is used to the frequency up to 1 GHz. Additional radio wave matching devices are available for the frequency ranging from 30 MHz to 18 GHz.
- Non-flammable finishing material secures the safety of high-frequency, high-output immunity tests
Small-sized Anechoic Chamber (3m Method)
Small-sized Anechoic Chamber (3m Method)
tandard Specifications
|
ALC-3SL |
ALC-3S |
ALC-3W |
| Main support |
EMI |
EMS |
| Shield inside dimensions (m) |
|
|
| Outside dimensions (m) |
|
|
Site attenuation characteristics (dB)
(comparison to a basic open field test site) |
Horizontal: +/-4 (at 30 to 1000 MHz)
Vertical: +/-4 (at 30 to 1000 MHz)
at 0.5 m from the center of the turntable |
Horizontal: +/-6 (at 30 to 80 MHz)
+/-4 (at 80 to 1000 MHz)
Vertical: +/-4 (at 30 to 1000 MHz)
at 0.50 m from the center of the turntable |
+/-3 (at 30 to 1000 MHz)
(including correction values)
at 0.5 m from the center of the turntable |
Field distribution uniformity characteristic (dB)
(IEC 61000-4-3 conforming) |
Optional
0 to 6(at 80 to 1000MHz)
(Floor type absorber)
|
0 to 6
(at 80 to 1000MHz)
|
Shield
effectiveness (dB)
(IEEE-STD 299-1997 conforming) |
100(at 150kHz to 1000MHz)
|
Insertion
loss (dB)
(MIL STD-220A conforming)
|
|
| Radio wave absorber |
Ferrite radio wave absorber (TFA)
|
| Door dimensions (m) |
|
| Antenna holding device |
Lifting range(m)
Lifting speed(sec/m)
|
|
1 to 2.2
30(GP-IB control)
|
| Turntable |
Dimension(m)
Load capacity(kg)
Rotating speed(rpm)
|
|
1.2
250
1/3(2-stage selection, G-IB control)
|
| Attached facilities |
|
| Power supply |
Power supply panel/Filter panel/Insulating transformer/Lighting, etc.
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