Installation Guide

48 Pad Mount Installation
Verifying Successful Installation
Because the ECN has no external lights or displays, it uses an internal audio
buzzer to provide indications of important installation-related states. The
buzzer’s audio frequency is 2.4 kHz (as a 1/2 duty cycle square wave) and outputs
85 to 92 dBA of sound pressure,
4
which should be audible from at least 10 m (30
ft). Table 4 lists the sound patterns for the audio indicator. The audio indicator
outputs its audio indicator patterns only during ECN startup.
Table 4. Internal Audio Indicator Sound Patterns
Sound Pattern
Description On (ms) Off (ms) Repeat
1000 0 1 ECN boot process successful
System Manager is now running
4000 0 1 ECN boot process failed
1000 500 2 WAN connection to cell tower successful
4000 200 2 WAN connection to cell tower failed
1000 500 3 Connection to System Software successfully
established
4000 200 3 Connection to System Software failed
As the table shows, a successful installation should include several 1 second
sound bursts, some with a repeated pattern (1 s on, 0.5 s off) to indicate
successful network connections. If you receive a 4 s sound burst, the ECN boot
process failed. If you receive the repeated pattern (4 s on, 0.2 s off), a network
connection failed; check the network cable connection and verify that the network
is operational.
After installation is verified successful, use the COS Web page interface for the
ECN to verify additional functionality. You might also want use the command-
line interface to disable the internal audio indicator so that subsequent resets or
power events do not cause the audio indicator to output its audio indicator
patterns. You can also change the audio indicator patterns by modifying the
controller configurable file (CCF); see the COS User’s Guide for information
about modifying the audio indicator patterns.
4
dBA measures sound pressure levels relative to 20 µPa (rms) at 1 m.