Laird BL654, Примечание к применению

Страница: 13 / 15

https://www.lairdconnect.com/wireless-
modules/bluetooth-modules
13
© Copyright 2021 Laird Connectivity, Inc.
All Rights Reserved
Americas : +1-800-492-2320
Europe : +44-1628-858-940
Hong Kong : +852 2923 0610
Payload Length
0 bytes to 63 bytes
Set Length to 0
– If a continuous [CW] TX signal is required
TRANSMIT
To start TX test press TRANSMIT
Once configured, click TRANSMIT . If successful, no errors should show, as illustrated in Figure 5 . Figure 8 shows a TX
CW test.
Figure 8: Successful initiation of TX Test
With the module is in a Transmit test, you can measure the signal on a spectrum analyzer.
To conduct a receive test, configure the options in the Direct Test Mode panel as follows:
COM Port Same as previous
LE RESET First start by pressing “LE RESET”.
Data rate 1MPHY or 2MPHY or LE CODED (S=8) or LE CODED (S=2)
Standard or Stable
Modulation Index BL654 series BLE module currently does support standard modulation index, so
press
MOD’N INDEX (STD)
Channel ( fRx)
19 (2440 MHz)
Payload Model
(such as Pkt Type)
Pkt Type Value Parameter Description
00 PRBS9 packet payload
01 11110000 packet payload
10 10101010 packet payload
11 On the LE Uncoded PHYs – Vendor Specific
On the LE Coded PHY – 11111111
Pkt Type 00 – If a BLE-modulated RX signal is required with PRBS9 Packet payload