Connectivity Test
MC1322x SMAC Demonstration Application User’s Guide, Rev. 1.3
3-10
Freescale Semiconductor
3.5
Packet Error Rate (PER) Test
The Packet Error Rate (PER) test is a unidirectional test that sends a number of packets from a transmitter
to a receiver all on a single channel. The packet length is 18 bytes of data with 2 bytes of SMAC header
for a total of 20 bytes of payload. The results of the packets received by the receiver can be monitored in
two ways:
•
Using a PC and a USB connection
•
In a standalone mode by reading the count on the LEDs on the board
This test allows for PER testing using a PC.
3.5.1
Starting the PER Test
Ensure that both the Connectivity Test in TX mode board and the Connectivity Test in RX mode board are
on the desired channel. The PER-TX board and the PER-RX board are asynchronous to each other which
means that the PER-TX board does not know when the PER-RX board is on. Users must place the PER-RX
board into Listen Mode prior to setting the PER-TX board into Transmit Packet Mode. If this is done out
of order, the reported packet error rate may be incorrect.
Select Packet Error Rate option on both boards, the Connectivity Test TX and Connectivity Test RX
boards, and follow the instructions at the menus see
Figure 3-15
for TX and for RX
Figure 3-15. Selection Packet Error Rate Test