Product Info

RTL8822CE RTL8822CU RTL8822CS COB TSSI MP FLOW
©2019 Realtek Semiconductor Corp.
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3.2. WiFi performance verification
WiFi performance
verification
Tx performance
verification
Rx performance
verification
3.2.1. Tx performance verification
The following flow will show the Tx performance verification flow, criterion, and sample
command.
3.2.1.1. Tx performance verification criterion
Use the calibrated Tx index in previous step and measure Tx power, EVM, frequency offset
and LO leakage to check Tx performance is ok or not. The recommended test items are listed
below:
Data Rate
Antenna
Channel
Item
Criterion
MCS7-B40
Antenna A
Antenna B
CH10
Power
Typical: 16dBm, Acceptable Range: +1/-1.5dB
EVM
< -28dB
Freq. Err.
±15ppm
Leakage
< -20dBtotal
Mask
IEEE spec. defined
OFDM 54M
Antenna A
Antenna B
CH1
Power
Typical: 17dBm, Acceptable Range: +1/-1.5dB
EVM
< -25dB
Freq. Err.
±15ppm
Leakage
< -15dBtotal
Mask
IEEE spec. defined
CCK 11M
Antenna A
Antenna B
CH7
Power
Typical: 18dBm, Acceptable Range: +1/-1.5dB
EVM
< 8%
Freq. Err.
±15ppm
Mask
IEEE spec. defined
Table 7: The recommended test items of WiFi Tx