RFDesign RFD TXMOD - Page 15

RFD TXMOD User Manual
www.rfdesign.com.au
– Version 1.2 – Status – Issued for use
Document Number – PRJ-TXM-MAN-001
Page
14
Set GPIO 1.3 (pin 12) as output with state
that mirrors the status LED on the modem
S22
GPIO1.0 485 TX control output
6
Set GPIO 1.0 (pin 13) as control signal on
DINIO and RS485 interface boards.
0
1
0
No
S23
Rate and Frequency Band
Switches between valid settings for the
frequencies, channels and airspeeds that
can be set on compliant modems ensuring
compliance is maintained. See section 3.4
for FCC-related information.
0
3
0
Yes
R0
TARGET_RSSI
Optimal RSSI value to try to sustain (255/0
8
disables the feature) V3.09 and earlier this
is based on RSSI figures. After v3.12 this
changes to being based on receiver dBm
255/110
8
50/0
8
255/0
8
No
R1
HYSTERESIS_RSSI
Amount of change before power levels
altered. V3.09 and earlier this is based on
RSSI figures. After v3.12 this changes to
being based on receiver dBm
50/15
8
20/2
8
50/5
8
No
Table 3: RFD900x SiK firmware parameters
Notes:
1
The listed values are the full range of options available on unrestricted modems. The range of settings available may be altered on
compliant systems to maintain compliance to the appropriate standards
2
ECC - Software Detection and correction, extra packet information, twice the packet length, is sent to allow the recovery of corrupted
packets. Disabled in version 3.15 and up. Error detection is handled by CRC since at least version 3.01
3
Injects RSSI packet when MAVLink protocol used and heartbeat packet detected.
4
868 modems
5
Experimental feature settings not currently available
6
This setting controls modem functionality linked with 485 interface and DINIO products it is not intended for use outside of this
application.
7
Version 3.09 the SBUS function is mapped to GPIO1.3
8
Version 3.15 and up
a) Modifying parameters with the TXMOD web interface
The modem settings, described in Table 3, can be viewed and modified on the TXMOD and on any
remote modem connected to it by using the browser interface introduced in Section 3.2.2.
To do so, point your preferred browser to the module’s IP address to access the TXMOD web
interface.
- Click on ‘RFD900x Radio Settings’ to access the modem’s setup interface. Note: If the TXMOD has
not been paired yet with any other modem, the remote side will appear empty and the message
“Sorry no parameters available” will be shown.