AUDIOLINE POWER PMR 40 Manual de usuario descargar pdf (Pagina 20)

A.W. Communication Systems Limited

TRip2 Manual, Version 1.5 Page 20 of 34 © AWCSL 2010

4.11. Time Synchronisation

The TRip2 will attempt to set its local clock time using the network time protocol (NTP) every time it

boots, as well as every hour. Up to three NTP servers can be configured using the command-line

interface (see section 5 below).

Note that the TRip2 does not require the correct time to be set – this is purely for using the

syslogging function. If no NTP servers are available, the TRip2 will set the current time to be midnight

on January 1

, 1970 at start-up. You can find out what time a TRip2 unit currently holds using the

unit show time command-line function.

There are many publicly available NTP servers available on the internet – an incomplete list can be

found at www.ntp.org. The default NTP servers are pool.ntp.org and ntp.ubuntu.com. If the TRip2

unit is installed on a private LAN with no internet connection then a local NTP server can be setup in

order to provide a clock source.

4.12. External Power

External regulated +12 V DC power is provided to the TRip2 by means of a 2.1 mm centre-positive

jack socket. Power for this is provided by an external switched-mode power supply.

A green LED indicator is provided that is directly powered from the internally generated 3.3 V power

supply. Absence of the external +12 V or failure of the internal power supply will be indicated by this

LED not being illuminated.

4.13. Physical Format & Enclosure

The TRip2 is usually a standalone unit designed to be either wall or desktop mounted, and provided

with an external regulated plug top style mains power supply. The TRip2 unit is mounted in an

aluminium extrusion measuring 115 mm (width) by 34 mm (height) by 125 mm (depth).

The rear panel holds the power connector and the LAN connector whilst the front panel holds the

line/remote port, the logic I/O port and the configuration port.

The mechanical design of the PCB will also allow multiple cards to be mounted in a rack-mount unit.

The physical format of the TRip2 is designed to be as close to the original TRip unit as possible. As

standalone units the two are identical, and the TRip2 PCB can be mounted wherever a TRip unit can

be.

4.14. LED Indicators (Summary)

The TRip2 has the following LED indicators:

LED Name

Colour

Function

Power

Green

Indicates the presence of the internal +3.3 V power supply

LAN Link

Yellow

Indicates the status of the Ethernet connection. On indicates link up status.

LAN Data

Green

Indicates the reception or transmission of data on the Ethernet port.

Alarm

Red

Indicates an alarm has been triggered on the unit.

Table 12: LED Indicators

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 33 34

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