ADEMCO VISTA-100 Service Manual download pdf (Page 53)

VISTA Gateway Module (VGM)

Access Control Interface

APPLICATIONS:

Once the appropriate configuration information has been

transferred from the PassPoint’s Main Logic Board (MLB) to the

VGM, the VGM passes the messages as indicated by the

configuration from the MLB to the Vista and from the Vista to the

MLB. It keeps a copy of its configuration in a small on board

serial EEPROM.

INSTALLATION:

The VGM obtains its power from the LOCAL power output

connection of its associated Access Control System Power

Supply (ACS PS) when mounted in a cabinet with a dedicated

ACS PS. When mounted in a cabinet along with an MLB or the

PassPoint Door Control Module (DCM), it obtains its power from

the ACS PS REMOTE power output. The VGM requires 10.5-14V

DC @ 100mA. The VGM can also connect to a Vista keypad

power source.

SPECIFICATIONS:

The VGM communicates with its MLB via a twisted pair network

connection. Physically, this connection adheres to Echelon Free-

Topology Transceiver specifications (Transformer-Coupled,

Differential-Pair, 78Kbps). Logically, the connection is made

through the use of the Echelon Lonworks Protocol. Each VGM

connected to the network is considered a “node” and is

identified by a unique 48-bit serial number which is present in the

VGM’s Neuron chip.

Part No. Description

PTVGM VISTA Gateway Module

ECP Power

ECP Ground

ECP Transmit

ECP Receive

Contact ID Dialer Interface

To Echelbonworks Free

Topology Twisted Pair Bus

To Vista Panel

}

Vista

Gateway Module

(VGM)

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ADEMCO VISTA-100 Service Manual Page 53