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StarGuide Digital Networks
5.10
Set the LCD - LCD
The
LCD command is a helpful tool to verify that a receiver is receiving In Band Signaling
(IBS) commands. It is also useful in sending information (short messages) to remote receivers.
LCD string
The string parameter will be displayed on the front panel LCD of
the receiver. To add a carriage return to the second line a back-
slash character (“ \ “) is used. The string can contain any
characters including commas (“ , “), double quotes commas (“ “ “),
and spaces. The following examples show how the LCD command
is used:
LCD FIRST LINE\SECOND LINE
produces the following:
FIRST LINE
SECOND LINE
On the LCD
LCD “LCD,MSG”
produces the following:
“LCD,MSG”
On the LCD
5.11
Event Logging - LOG
The
LOG command is used to keep track of all significant events that occur within the receiver.
The network broadcasts the current time of day to each receiver. The receiver uses this time-to-
time stamp events that occur. The
LOG command is used to start, stop, and query the current
event log. The receiver can maintain one event log that will store the last 256 events in non-
volatile memory. To start a log simply issue a
LOG 1 command. This will write over any
existing log. To stop the log simply issue a
LOG 0 command. Once the LOG 0 command has
been issued the current log can still be accessed but it cannot be continued. To start the log
again issue a
LOG 1 command which will then overwrite the stopped log.
The current status of the event log can be queried. When the
LOG command is queried it
returns the log’s current state and the number of events that are stored in the log. A log state of
0 means the log is turned off and a log state of 1 means the log is turned on. For example, if the
response to a
LOG query is
LOG 1,16
The log is turned on and there are currently 16 events in the log.
The events stored in the log are stored with a timestamp and an event type. The log results can
be queried in two different ways. The easiest way to view the log is by issuing a
LOG 3
command. This will dump the current contents of the log in a text-based form. The first number
is the timestamp of the event (the number of seconds since January 1, 1970) and the next item is
the event type (in English). Each event is displayed on a single line. Although the timestamp
may be confusing, it is useful for computing relative times and elapsed times.
The current timestamp can be queried with the
TS command. To determine the time since a
specific event, subtract the event’s timestamp from the current timestamp. This provides the
elapsed seconds since the event.
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