System Core Debugging; Monitor Changed Status Of Digital Inputs; Stop Information Dumping - 4xem IPVS1A User Manual

Telnet
Video Server has a Telnet daemon for administrators to access some seldom used functions.
Using any general terminal program to connect to Video Server will prompt the user for a
password. Username is not requested here since only administrators can access the Telnet
daemon. The password is as same as that used for web access. After logging in, type "help" for
the command list. If "debug" or "dinote" is not executed, Telnet will disconnect automatically
after being idle for 1 minute.

System core debugging

General activities are recorded into SYSTEM.LOG continuously, but information about
abnormal status is not. To look deep into the core debugging information, administrators may
type the "debug" command. This will cause Video Server to start dumping the detailed
debugging information while the system is running. This is useful to examine if any error has
occurred when the system operates abnormally. The stored information will be cleared
automatically after the dump. Video Server will continue to dump new messages unless the
connection is broken. If Telnet is not connected, any messages will be stored until administrators
re-login.

Monitor changed status of digital inputs

Typing "dinote" will make Video Server send the current status of digital input. After that Video
Server will continuously monitor DI status and send messages only when the state has changed.
For example, after typing "dinote" the terminal will display
DI=L
DI=L
and if DI changes to H, terminal will display only
DI=H

Stop information dumping

Typing "stop" will cease dumping debug information and digital input status.
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