SEL-3022 Transceiver
Instruction Manual
Date Code 20050615
Testing and Troubleshooting
Communications Channel Diagnostics
5.4
Cryptographic Manual—Do Not Copy
Communications Channel Diagnostics
The SEL-3022 provides a serial communication diagnostic function to aid in
troubleshooting.
The SEL-3022 monitors the DCE serial port for various errors. You can use the number
and type of errors to troubleshoot communications channel problems. Use the
SEL-5809 Settings Software Communications Channel Report page to retrieve
communications channel diagnostics.
The SEL-3022 records the following Communications Channel Statistics.
You can use the SEL-5809 Settings Software to clear comm statistics.
The wireless interface shows the Comm Quality (Signal-to-Noise ratio), Average
Signal level in dBm, and Average Noise level in dBm. You can use these measurements
to determine the wireless signal strength of the SEL-3022 as you apply the transceiver
in your application.
Table 5.1
Status: Comm
Status
Status Name
Description
DCE Serial Port
Errors
DCE Framing Errors
Number of times a Stop Bit failure
has occurred.
DCE Overrun Errors
Number of times a receive charac-
ter was not removed from the
serial port before a new character
arrived.
DCE Parity Errors
Number of times a parity error has
occurred.
DCE Error Total
Total number of Framing, Over-
run, and Parity Errors.
Contact Alarm Comm
Pulse
How much any communi-
cations statistics value must
increase before pulsing the
alarm contact
0–500 Failures
Clear Comm Statistics
(Button)
NA
Press to clear all communication
statistics to zero.
Table 5.2
Device Status: Device Status
(Sheet 1 of 2)
Status Name
Description
Comm Quality
Report RF Signal-to-Noise Ratio from 802.11b module
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