2019-01-15 WLAN 802.11 a/b/g PHY Specification and EDVT Measurement V

Receive Minimum Input Level (Sensitivity)

image

测试方法：

image

Receiver Adjacent Channel Rejection (ACR)

-For IEEE802.11b 18.4.8.3 (11Mbps), For 802.11b 15.4.8.3 (2Mbps)
For 2Mbps, 8% PER Maximum of DUT, where –74dBm Input Power from Golden Unit at ideal frequency and -39dBm Power from Adjacent Channel Interface at 25Mhz away from the Ideal frequency with PSDU length 1024Bytes and 2Mbps Transmit Rate
For 11Mbps, 8% PER Maximum of DUT, where –70dBm Input Power from Golden Unit at Ideal frequency and -35dBm Power from Adjacent Channel Interface at  25Mhz away from the ideal frequency with PSDU length 1024Bytes and 11Mbps Transmit Rate
ACR (dBm) = Minimum Power at DUT Input from Modulated Interference (dBm) - Power at DUT Input from Golden Unit (dBm)
Signal from Golden and Modulated Interference is unsynchronized

image

For IEEE802.11a 17.3.10.2 (OFDM), For 802.11g 19.5.2 (OFDM)
For 802.11a, 10% PER Maximum of DUT, where Input Power (shown in the following table) from Golden Unit at ideal frequency and the Power from Modulated Adjacent Channel Interface (shown in the following table) 20MHz away from the ideal frequency with PSDU length 1000Bytes
For 802.11g, 10% PER Maximum of DUT, where Input Power (shown in the following table) from Golden Unit at ideal frequency and the Power from Modulated Adjacent Channel Interface (shown in the following table) at 25MHz away from the ideal frequency with PSDU length 1000Bytes
ACR (dBm) = Minimum Power at DUT Input from Modulated Interference (dBm) - Power at DUT Input from Golden Unit (dBm)
Signal from Golden and OFDM Modulated Interference is unsynchronized

image

image

image

Receiver Non-Adjacent Channel Rejection (NACR)

+40MhZ

image

Conductive Throughput Test

Test Condition
-Test Environment
ex DUT and AP in different shielding room or box
-Test AP
Brand : ex Netgear, Model : ex FWAG114
-Wired AP PC
Model : Dell D500, CPU Pentium 4 1.2GHz, RAM 512MB, OS Windows 2000 SP4
-Ethernet Card in Wired AP PC
Model : ex Intel(R) PRO/100 VE Network Connection
-Test Client
Project Number ex T60H881 ,
Description, ex Intel PCI 11b/g WLAN Card, Sample number 19
ECN ex Delete C869=0.5pF, Add C855 = 0.75pF and Change R68 = 121 ohm
-Test NDSI Driver of Client
Version ex 1.0.0.38 (5/13/04), TIC ex 84423
Microsoft 0 configuration
-Wireless Client PC
Model : ex HP D220m/P2, CPU : ex Pentium 4 2.6GHz , RAM : ex 256MB, OS Windows XP Professional SP1

-Test Utility
Ex Chariot Console version 4.0 Build level 850 and Endpoint version 4.0)
File Size : ex 100Kbytes
Test Time : ex 1 min

Power Calibration Condition
-Spectrum Analyzer
SA Setting, RBW = 100K, VBW =30K, Sweep=500ms, RMS Detector, MAX Hold
-Protocol Tools
Intersil LAN Evaluation,
PER Test (Broadcasting, Packet Size= 10K)
-Calibration Result :
ex 5dBm at DUT input port from SA while no attenuator set from HP 8494B/5B while LAN evaluation is running
Rx Conductive Throughput and TX Conductive Throughput
-TX Throughput share the same attenuation setting as RX, just for reference

image

Average RX Throughput
Around 20Mbps for 11g from (from -20dBm to –70dBm)
Around 5Mbps for 11b from (from -10dBm to –80dBm); 6Mpcs for Cisco 350 AP
Relative Precision
Normal (< 5), Warning (5~10), Danger (>10)

image

image