Ether232
Plus
User Guide
6
System
Settings
02-CML000057
Precidia Technologies Inc.
53
The Com Port portion of the test will always return “
Com Port... skipped (external
loopback not found)
” if you are running the Self Test from a local connection and do
not have an external loopback dongle attached to the
COM
port. You must attach a
loopback dongle and run the Self Test remotely via telnet to test the com port.
Messages that may result from the Com Port test are described in Table 6.1.
6.8
Reset Unit
Reset Unit is useful for troubleshooting, since it allows you to ensure that modem
connections are dropped correctly. Reset Unit resets the Ether232
Plus
, and drops all
active modem connections. The Configuration screen is not changed nor is the System
Log cleared, however, the message “===== Ether232Plus Started =====” is appended
to the System Log.
Reset Unit allows you to reset the Ether232
Plus
from a telnet session without saving
any changes to the configuration menu.
6.9 SNTP Settings
Simple Network Time Protocol (SNTP) is used to synchronize computer clocks on the
Internet. Every 5 minutes, a request is sent to the
Primary Server
. If a response has
not been received by the unit within one minute, a request is sent to both the
Primary
Server
, and the
Secondary Server
(if defined). This feature is disabled if the Primary
IP address is not defined.
The real-time clock timestamp can be viewed in the System Log. Please refer to
section 7.2 System Log for further information.
Table 6.1: Com Port Self Test Results
Result
Meaning
Com Port... passed
Everything is fine
Com Port... character not received
A transmitted character was not received
Com Port... character not transmitted
The internal port could not transmit
Com Port... skipped (external loop-
back not found)
No loopback dongle found
Com Port... control lines not looped
back
The DTR/DSR, DTR/DCD lines, if
present, are not looped back as expected
Com Port... transmitted and received
characters are different
The data sent is not the same as the data
received
