RTS TM-2000 Manual do Utilizador descarregar pdf (Página 30)

Audio sources can be utilized in several ways within the

intercom system:

•

An audio source can be assigned to a keypanel listen

key. This permits the keypanel operator to listen to

the source by activating the listen key. To assign an

audio source to a key, click the KP button on the

toolbar, then press the F1 key for help with keypanel

setup.

•

The audio input to which an audio source is

connected can be forced to the output of an intercom

port (forced crosspoint). This forces the audio to

always be heard at the output. This might be useful,

for example when a belt pack or similar device needs

to hear an audio source, but does not have listen keys.

To force a crosspoint, click the XPT button on the

toolbar, then press the F1 key to get help on this

feature.

•

A program source can be used with interrupt

foldback (IFB). Using IFB, the program source will

normally be heard at some specified intercom output

port. Then, when someone presses an intercom key to

talk to that output port, the program audio will be cut

off to permit conversation. The program audio will be

restored when the intercom key is released. To setup

an IFB, click the IFB button on the toolbar, then

press the F1 key on the computer keyboard to get

help.

7.13 General Purpose Interface (GPI)

Connector (J27)

7.13.1 General Description

J27 provides 8 general purpose control inputs and 8 gen-

eral purpose control outputs. The control inputs can be as-

signed, using ZEUSedit, to activate intercom ports, party

lines, etc. The control outputs can also be assigned, using

ZEUSedit, to be activated by keypanel keys. The control

outputs can be used to control lighting, to key a remote

transmitter, to activate a paging system etc.

☞

You may see the GPI outputs referred to as relays,

and the default names for GPI outputs are RY01,

RY02 etc. Although the actual GPI outputs from

Zeus are not relays, they are generally used in the

same way that relays would be used. If you connect a

UIO-256 Universal I/O Frame to Zeus, this device

has actual relays which are assigned using the GPI

output feature of ZEUSedit.

7.13.2 Connections

Pin-outs for the GPI inputs and outputs are summarized in

Table

2, page 10. The GPI inputs require +5 to +12 VDC

for activation. Figure 23 shows a typical connection. The

GPI outputs are open collector outputs and require an ex-

ternal voltage to operate. These outputs pull to common

when activated. Figure 24 shows a typical connection.

7.13.3 Programming GPI Outputs

You name GPI outputs using the Other Alpha button. You

can assign GPI outputs to keypanel keys by clicking the

KP button and then following the steps you would nor-

28 Getting Started, Zeus™ DSP Intercom Matrix

EXTERNAL

CIRCUIT

5-12 VDC

GPI Input

Common

Figure 23. Typical GPI input connection.

22 K

10 K

12 VDC

Common

GPI OUT +

Figure 24. Typical GPI output connection.

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 36 37

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