RFDesign RFD TXMOD - Page 4

RFD TXMOD User Manual
www.rfdesign.com.au
– Version 1.2 – Status – Issued for use
Document Number – PRJ-TXM-MAN-001
Page
3
Table 1 - TXMOD Description
#
Description /Note
1
Antenna
connectors
For information about antenna selection refer to section 5 in this document
or to the RFD 900x Modem datasheet linked in section 7.
2
Heat sink
The heatsink, visible through the top cover, is required for proper operation
and should not be covered while the unit is in use.
3
Status LEDs
Red
Blinks slowly a few times - establishing link to a Wi-Fi client.
Blinks rapidly for some time - flashing the modem firmware (using
‘spiffs.bin’ file explained in 3.2.2e)
Solid - device initialisation has completed
Green
∗
Blinking – RFD modem looking for a link
Solid – RFD modem bound to another modem
4
Button
Press 5 times within 5 seconds to reset all Wi-Fi settings to default values.
(Red LED will turn off, blink 3 times and go solid after resetting default Wi-Fi
settings)
5
Tabs
Mechanical clips to lock the TXMOD into the radio control socket.
6
RC and
TXMOD
Interface.
∗∗
a
PPM
Sends RC data into TXMOD.
b
+6 V
6V supply positive terminal (not used by the module)
c
+Bat
Positive battery terminal (supply for the module)
∗∗∗
d
GND
Ground
e
-
Not connected
∗
Green LED will be enabled after ‘First Run Wizard’ explained in section section 3.2.2 0.
∗∗
Interface between RC and TXMOD is done through a female 0.1” pitch connector.
∗∗∗
See Table 2 below for module supply ratings and section 6.1 for the relation between battery voltage and
current draw with different battery types.
Table 2 - TXMOD Supply Ratings
Parameter
Minimum
Maximum
Units
Supply Voltage (+Bat relative to GND)
+5
+18
V
Operating Current Draw
N/A
1.2
*
A
∗
Rating for TXMOD with RFD modem set for maximum 1W transmit power measured at 5V supply.