Product Info

IR LRM2 Radio Module IR LRM2 Configuration Concept
Document p/n: 9S02-9027-A001 Rev.A
21
LRM, host interface
26
RXD
TXD
25
!CONFIG
3V3
GND
27
22
RS232 - TTL transceiver
(ex: Cattron FLASHBOX)
3.3VDC
RS232
PC, running automated test
program, or ANSI terminal
emulation software
*Note: The LRM !RX_EN, !TX_EN and !RESET all have internal pull-ups, so they can be left unconnected.
Figure 5.1 - LRM2 connection for stand-alone operation
The IR LRM2 will support several built-in test modes to ease testing from a PC. For example
a. Sub-GHz Transmission Tests
- Generation of different type of carrier: unmodulated (CW), or modulated with “101010..” or pseudo-random
sequence
- Automatic generation of test RF frames with predefined content
b. Sub-GHz Reception Tests
- Measure PER (packet error rate) when receiving the predefined test RF frames
- Measure RF input level
c. Bluetooth Tests
- By using Silicon Labs application, “Wireless Gecko”, the Bluetooth channel, transmit power level, data speed
could be adjusted.