SP2-433-160 Datasheet, PDF (16/27 Pages) Radiometrix Ltd – UHF SpacePort Transceiver

In some modes the RXR output from the SP2 is driven low to indicate 'pass' or 'OK'. An LED + 1kΩ from
RXR to 5V is recommended.
Mode
0
1
2
3
4
5
6
7
Name
RX-ON
RX-PULSE
TX-ON-PRE
TX-ON-SQ
TX-ON-255
TX-PULSE
ECHO
RADAR
Function
PREAMBLE DETECTOR ON (RXR RED LED = preamble detected)
10ms ON : 10ms OFF, PREAMBLE DETECTOR ON RXR LED
Preamble Modulation - send continuous preamble
100Hz SQUARE WAVE MOD - TX testing on spec. Analyser
random 160kbit/s data for EYE DIAGRAM tests, sync's on RXR
PREAMBLE BURSTS (EE 01 SETTING): 10ms OFF, RX lock in tests
TRANSPONDER MODE, re-transmit any valid packets received
Send ASCII TEST PACKET "RADIOMETRIX" and listen for echo
Modes 6 & 7 are particularly useful for software debugging and range testing.
Antenna
Signal TX RX
+5V
OK
D0
D1
SP2 _D2
RX select
D3
TX select
SIGNAL
1kΩ
TXA
TXR
Reset
RXA
0V ^RXR
+5V
Test Mode
Select
Switches
figure 14: stand-alone diagnostic mode
D3 D2
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
D1
D0
Mode
0
0
0
0
1
1
1
0
2
1
1
3
0
0
4
0
1
5
1
0
6
1
1
7
Radiometrix Ltd, SP2 data sheet
page 16