Scantronic 808 Manual de instalación descargar pdf (Pagina 9)

…always there

Safety

The circuit board area, under the cover, is classed as a Telecommunication

Network Voltage (TNV-3) circuit. All other interconnection points are classed as

Safety Extra-Low Voltage (SELV) circuits. It is only necessary for this cover to be

removed during installation of the PSTN wiring.

The host alarm panel or box into which the STU is installed must provide a

RESTRICTED ACCESS LOCATION and a FIRE ENCLOSURE in accordance with the

requirements of BS EN 60950.

It is essential that the STU is installed so that there is a gap of at least 5 mm

between it and any other part of the host equipment (excluding the mounting

face and plug-in connectors). If any part of the host apparatus uses or generates

voltages in excess of 250 V rms or dc, obtain advice from a competent

telecommunications safety engineer before you install the STU.

Power Supply

The STU must be connected to a suitable power supply. The installer must

ensure that the rating of the power supply is greater than the combined rating of

the STU and any other apparatus drawing power from the power supply.

The STU supply requirements are detailed on page 8.

Compatibility

The STU is designed for connection to either the Public Switched Telephone

Network (PSTN) or a Private Wire (RedDIRECT). It is also compatible with earth

calling lines.

It is NOT to be used with 1+1 carrier systems or a shared service.

The STU must NOT share a telephone line with other electronic data equipment,

such as a facsimile machine, EPOS terminal or digital communicator unless a

redcare Modem Compatibility Device (MCD) is used. (MCD cannot be used with

Private wire or Earth Calling lines.)

Only one STU may be connected to any one telephone line.

REN

The Ringer Equivalence Number (REN) for the STU is 1. As a guide to the number

of apparatus that can be simultaneously connected to a line, the sum of REN

values for each apparatus should not exceed 4.0. A BT provided telephone is

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Scantronic 808 Manual de instalación Pagina 9