Product Info

RTL8822CE RTL8822CU RTL8822CS COB TSSI MP FLOW
©2019 Realtek Semiconductor Corp.
85
7.5. Verify Bluetooth BDR/EDR Tx SPEC
To measure the DUT Bluetooth legacy Tx power/initial Carrier offset/modulation
characteristics to check whether Tx performance is fine or not. Bluetooth legacy Tx criterion
is shown as below. Below SPEC is defined by using 5 dBm as target power at normal
temperature 25 degree C. For vender’s Tx verification, please adapt target power value as
your own SPEC.
Verify Bluetooth Tx Basic 1M
Test Item
Sub Test item
Channel
Packet
Type
Payload Type
SPEC
Output Power
Peak Power
0
6
39
42
70
78
DH1
DH3
DH5
PRBS9
< 9.5 dBm
NOTE: Max variation =
target power value +/- 4.5
dB*
Average Power
PRBS9
3 dBm ~ 7 dBm
NOTE: Max variation =
target power variation +/- 2
dB*
Modulation
Characteristics
Delta F1 Avg.
00001111
140KHz ~ 175KHz
Delta F2 Avg
10101010
None
Delta F2 Max.
10101010
> 115KHz
Modulation
Index
F2avg/F1avg
> 0.8
Initial Carrier Frequency
PRBS9
abs. < 20KHz
20dB BW
PRBS9
< 1000KHz
CF. Drift
PRBS9
abs. < 25KHz
Max. Drift Rate
PRBS9
< 20KHz/50us
Table 29: Verify Bluetooth Tx Basic 1M
*Max variation SPEC only available after doing Tx calibration flow