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Australian Monitor DMA1 User Manual

Page 15

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S C H E D U L E D O P E R AT I O N

PA G E 1 5

A M I S - D M A 1 I N S TA L L AT I O N & O P E R AT I O N M A N U A L

5.1 Introduction to timed operation

When the fl ash memory card is inserted, the DMA1 will analyse its “

contents and – depending on the fi les which are present – will

automatically set the mode of operation.

In the presence of the PALIN.TXT fi le, the DMA1 plays the sequence of MP3

fi les in a cyclical emission (one hour cycles) called PALIMPSEST which are

contained in the same PALIN.TXT fi le.

5.2 The palimpsest fi le – palin.txt

The DMA1 can manage a list of MP3s to be played according to pre-set

time intervals. This list is a simple text fi le (palin.txt) which contains a

number of time events along with a sequence of MP3 fi les to be played for

each specifi c time event.

There are a few simple rules on how to set the palimpsest; fi rstly the time

for an event must be defi ned in minutes. Eg: 00:10

NOTE: It is very important to start a new line of text for each event,

and to separate the hours from the minutes using the (:) character.

On the same line the names of the MP3 audio fi les to be used (and their

sequence) must be defi ned (max. 8 characters).

There are three different acceptable formats for separating multiple MP3

fi lenames for each event

1.

Separating character [Tab] between one MP3 and the next:

E.g.:

00:10 spot01 spot02 spot03

2.

Comma (,) between one MP3 and the next:

E.g.:

00:10,spot01,spot02,spot03

3.

Semicolon (;) between one MP3 and the next:

E.g.:

00:10;spot01;spot02;spot03

00:00 SPOT04 SPOT07

00:05 SPOT09 SPOT17

00:10 SPOT11 SPOT02

00:15 SPOT01 SPOT08 SPOT03 SPOT06

SPOT05

00:20 SPOT12 SPOT03

00:25 SPOT16 SPOT17

00:30 SPOT09 SPOT10

00:35 SPOT05 SPOT11 SPOT12 SPOT13

SPOT14

00:40 SPOT02 SPOT11

00:45 SPOT04 SPOT07

00:50 SPOT02 SPOT11

00:55 SPOT09 SPOT11

Once the confi guration has been completed, the fi le will appear similar to the following example:

EXAMPLE OF PALIN.TXT FILE WITH

CYCLICAL

EMISSION AT INTERVALS OF 5 MIN-

UTES

OF COMMERCIAL SPOTS

An example of the reading and functioning of a timetable is provided below:

00:05 SPOT05 SPOT11 SPOT12
00:11 SPOT01 SPOT07 SPOT03

In this case the DMA1 remains in standby for 5 minutes from the moment it

is turned on. At the 5th minute the DMA1 fades out the external line level

audio input source in order to play the 00:05 time event, composed of 5

MP3 fi les.

Once the time event has fi nished playing Spot05, Spot11, Spot12, Spot13

and Spot14, the DMA1 fades the external line level audio input back in.

Upon reaching the 11th minute the DMA1 fades out the external line level

audio input source and plays the 00:10 time event, composed of

3 MP3 fi les.