RTS TM-2000 Uživatelský manuál stáhnout pdf (Strana 31)

mally use to assign any port, party line etc. to a keypanel

key. There is also another unique way that you can use

GPI outputs: you can set them to activate whenever any-

one talks to a particular intercom port. This is convenient

because it saves you from having to make individual key

assignments. The following example compares the two

methods of using a GPI output.

Example: Suppose you want to be able to talk over a pub-

lic address system from a keypanel. Many paging amplifi-

ers have both an audio input and a control input to activate

(key) the amplifier output. You connect audio output from

some Zeus channel to the audio input of the paging ampli-

fier. You connect a Zeus GPI output to the control input of

the paging amplifier. (In some cases, an external relay cir-

cuit may need to be constructed, such as the one shown in

Figure

24. If you are using a UIO-256 instead of the GPI

outputs of Zeus, the UIO-256 uses actual relay contacts

for the outputs, and no external circuitry is required.)

There are now two ways to use the paging amplifier con-

nection.

1) Create a “stacked” talk key at a specific keypanel. Fig-

ure 25 shows an example of a stacked talk key. The ad-

vantage of this approach is that you can control access to

the paging output on a keypanel-by-keypanel basis. The

disadvantage is that you must set both talk level 1 and 2

on every keypanel that needs to access the paging

amplifier.

2) Set up the GPI output so that it will activate whenever

anyone talks to the intercom port where the paging ampli-

fier is connected. Figure

26 shows an example of this. The

advantage to this approach is that once you have setup the

GPI output, you don’t have to think about it anymore. Just

assign any number of keypanel keys to talk to the paging

audio output, and the GPI output will automatically acti-

vate to key the paging amplifier whenever any of these

keys are pressed. To get help on GPI Output setup, click

the GPI Out button, then press the F1 key for help.

Getting Started, Zeus™ DSP Intercom Matrix 29

Talk level 1

assigned to port PAGE

Talk level 2

assigned to GPI output PAGE

Figure 25. An example of a stacked talk key.

Talk level 1 connects the keypanel’s mic signal to an inter-

com output port that has been named “PAGE”. This output

is connected to the paging amplifier audio input. Talk level 2

activates a GPI output that has also been named “PAGE”.

This output keys the paging amplifier’s control input.

Figure 26. Setting up a GPI output to activate whenever anyone talks to a particular output port.

☞

In this example, GPI output number 001 was named “PAGE” using the Other Alpha button. The audio port that the paging

amplifier is connected to was also named “PAGE” using the Port Alpha button.

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