ETSI EN 300 328 is the mandatory regulation stardard for all of the 2.4GHz ISM Band wide-band wireless transmission equipment such as Bluetooth & WiFi, etc., in the European market.
ETSI released EN 300 328 V2.1.1 on Nov.16, 2016, which will take effect from Aug. 31, 2017. And the older version of V1.9.1 will be revoked at the same time.
As the industry's leading test system solution provider, Ascentest interpreted the new version of stardard right after its release, and upgraded the AT890 test system, both hardware & software, to be the first test solution to support this latest version in the industry.
The following is a brief analysis on the new version V2.1.1 comparing with the older version V1.9.1.
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V1.9.1
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V2.1.1
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RF output power, Duty Cycle, Tx-sequence, Tx-gap, Medium Utilization
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The same as V1.9.1
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Power Spectral Density
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No Option. Only one test method.
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Two Options:
Option1:
For equipment with continuous and non-continuous transmissions
> Option1 is almost the same as V1.9.1 with some minor adjustment on Sweep Time:
(1) For non-continuous transmissions:
2 × Channel Occupancy Time × number of sweep points
(2) For continuous transmissions: 10s
Option2:
For equipment with continuous transmission capability or for equipment operating (or with the capability to operate) with a constant duty cycle (e.g. Frame Based equipment)
> Option2 adopts a new test methods.
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Dwell Time
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Hopping Frequency Separation
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Detector Mode: RMS
Sweep time: 1 s
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Almost the same as V1.9.1 with some minor adjustment on parameter settings:
Detector Mode: Max Peak
Sweep time: Auto
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Adaptivity
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TL = -70 dBm/MHz + (20 dBm - Pout e.i.r.p.)/1 MHz
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Change the formula for calculating the power of AWGN:
TL = -70 dBm/MHz + 10 × log10 (100 mW / Pout)
The Blocking test in V1.9.1 is now part of Adaptivity test in V2.1.1
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Occupied Channel Bandwidth
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Frequency Span for frequency hopping equipment: Lowest frequency separation that is used within the hopping sequence
Frequency Span for other types of equipment: 2 × Nominal Channel Bandwidth (e.g. 40 MHz for a 20 MHz channel)
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Almost the same as V1.9.1 with some minor adjustment on parameter settings:
Frequency Span: 2 × Nominal Channel Bandwidth
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Transmitter unwanted emissions in the out-of-band domain
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Transmitter unwanted emissions in the spurious domain
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Receiver spurious emissions
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Receiver Blocking
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Newly added test item.
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A brief summary on the differences between the two versions:
1. Some of the formula and limit values are changed.
2. PSD: a second option, with a new test method.
3. Receiver Blocking: a new test item, which needs some DUT control software to read the PER. And the Blocking test is combined with Adaptivity.
4. Changes on Test Structure, which leads to hardware upgrade on RF Inferface Box (AT890-RFB). The new test setup as blows:
Additionally, according to our experience, an RF Shield Box is necessary to prevent the DUT (even without antenna) from connecting with the Companion Device over-the-air.
For more information on AT890 Test System, please visit:
http://www.ascentest.com/en/Product_info.php?ID=48-2045-1#Menu=ChildMenu1
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The full-tex file of ETSI EN 300 328 V2.1.1 can be downloaded at the following link:
