EM357-MOD-LR-ANT-T Silicon Labs, EM357-MOD-LR-ANT-T Datasheet - Page 39

• Manufacturer Part Number: EM357-MOD-LR-ANT-T
• Description: Zigbee / 802.15.4 Modules EM357 Module, w/ PA /LNA, incl. antenna
• Manufacturer: Silicon Labs

Specifications of EM357-MOD-LR-ANT-T

• Rohs: yes
• Frequency Band: 2.4 GHz
• Data Rate: 500 Kbps
• Sensitivity: - 100 dBm
• Supply Current Transmitting: 31 mA
• Supply Current Receiving: 26 mA
• Maximum Operating Temperature: + 85 C
• Dimensions: 7.12 mm x 7.12 mm x 1 mm

EM35x Development Kit User Guide
8
8.1
The Nodetest Application replaces the Rangetest Application provided with earlier releases. This new
application supports a more advanced command parser and provides results in a more consistent, easy to parse
format.
The Nodetest application is pre-programmed on to the Radio Communication Modules (RCMs) included with your
EM35x Development Kit. The pre-built application image is also located at {stack installation
directory}\app\nodetest\nodetest.s37.
You may communicate with the serial interface of the Nodetest application using the methods described in
Chapter 6. Ensure that the serial port is configured for 115200 baud, 8 data bits, No parity, and 1 stop bit. By
default the InSight Adapter (ISA3) is configured in this way, but it can be adjusted in this manner:
•
•
The Nodetest application provides on-line help about the available commands that can be viewed by executing
the command “help”. All input parameters to Nodetest are specified in hexadecimal.
8.2
A typical usage scenario for the Nodetest application is measurement of Packet Error Rate (PER). PER is defined
in 802.15.4 as the percentage of transmitted packets that are not detected correctly. The Nodetest application
provides two commands "rx" and "tx" that are designed to interoperate with the "receive" and "transmit"
commands from the EM250 Rangetest application.
PER measurement procedure:
> rx
{{(rx)} test start ('e'nd)}
#{{(rx)}
{ {
{ {
{ {
1
This example may show different length packets than you see.
{num}
Connect to the admin interface of the ISA3.
Issue the baud rate configuration comment for the pass-through UART (port 1):
1.
2.
3.
4.
5.
1} {
2} {
3} {
Software Tools Overview
Using the EM357 Nodetest Application
Running a Packet Error Test
Load the Nodetest application on two EM357 nodes.
Set the radio to the desired channel on both nodes with the "setchannel n" command where "n" is the
desired channel number in hex.
Issue the "rx" command on the first node.
Issue the "tx a" command on the second node. (This command will transmit 10 (hex a) packets of the
form required for PER analysis. For actual PER analysis, send 1000 or more packets.)
Observe the PER result in the third column of the "rx" command output, for example
{seq}
1} {
2} {
3} {
{per} {lqi}
0} {0x00} {-22} {0x31} {0x4000} {0x000F3716} {0x12}
0} {0x00} {-22} {0x31} {0x4000} {0x000F9FE6} {0x12}
0} {0x00} {-22} {0x31} {0x4000} {0x000008B6} {0x12}
{rssi}{gain} {status} {time}
{length}}
port 1 115200
}
}
}
1
:
120-4030-000E
8-1