Product Info

RTL8822CE RTL8822CU RTL8822CS COB TSSI MP FLOW
©2019 Realtek Semiconductor Corp.
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3.1.2. Pre-heating
Pre-heating is an one-time experiment to grab essential setup, it made DUT closed to the
usual temperature and improved the stability of mass production. It will pre-heat the DUT for
seconds before mass production.
Step 1 : Read and record thermal value THER
RX
at steady Rx status which lasts 5
minutes at room temperature.
rtwpriv wlan0 mp_start //Enter WiFi MP mode
Wait for 5 minute.
rtwpriv wlan0 mp_ther //Get the thermal value THERRX
Record the THERRX value.
Step 2 : Use MP HW Tx to do the following pre-heating operation.
rtwpriv wlan0 6 1 a HTMCS7 1 TxPacketInterval TxPacketLength
//Supposed initial value of Tx TxPacketInterval = 100
//Supposed initial value of Tx TxPacketLength = 1000
rtwpriv wlan0 mp_ther //Get the heated thermal value THERHeating
Step 3 : To figure out pre-heat settings (TxPacketInterval/TxPacketLength/TIMEHeating).
Trim the TxPacketInterval or TxPacketLength, then do HW Tx and record how long
does the DUT be heated to THERRX temperature. If THER
Heating
- THER
Rx
≦ 3, means
DUT is heated to desired temperature. The time-spent records as TIMEHeating.
Use these settings (TxPacketInterval/TxPacketLength/TIMEHeating) as pre-heating setup.
Pre-heating DUT before calibration by the found settings set :
Do HW Tx rtwpriv wlan0 6 1 a HTMCS7 1 TxPacketInterval TxPacketLength
Last for TIMEHeating. So that DUT can be pre-heated to desired thermal range.