AUSTRALIAN MONITOR PAGENET 88 Manual de instruções - Página 4

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Rear Panel Features

AC Power Inlet

The 3 pin IEC power inlet is located on the bottom left of the rear panel and accepts a standard mains power lead fitted

with an IEC connector. Before plugging in a power lead, please check the rear panel to ensure that the voltage label

shows the correct AC operating voltage for your part of the world. The inlet is equipped with an in-built AC fuse holder

fitted with a 1 Amp slow blow fuse plus a spare fuse. Please ensure that the mains power cord is disconnected before

attempting to check or replace this fuse. Power consumption is 25 VA (max).

Terminal Strip

The terminal block below the mains power inlet provides a number of functions. A 'Phoenix' connector block (supplied)

can be unplugged for easy cable connection. This terminal block carries the following features:

12VDC: The PageNet matrix will operate from 12-24VDC. Simply connect DC power source to the +/– terminals.

SUM: This can be seen as a 5

auxiliary input. Connecting a line level source to the 'SUM and 'COM' (see below) allows

a 5

input to be active to all zones. This input mixes with all other inputs and is transmitted to every zone irrespective of

the status of 'Page Enable' section. The 5

or SUM input can become a priority input by simply making and holding a

contact closure (COM and EMERGENCY). When an EMERGENCY contact closure is held, the SUM signal will have

overall priority and be broadcast into every zone (including de-selected zones) while the contact closure is held. Such

an input may be used for an external evacuation signal, or for special pre-recorded announcements. A Trim control for

the SUM is provided internally.

EMERGENCY: When used in conjunction with COM as a contact closure, this trigger will mute all program sources

while the closure is held. It may be used in conjunction with the 'SUM' input (see above) or simply used as an overall

mute switch (possibly to shutdown the unit in the event of a separate evacuation system being activated)

ALERT: The Alert terminal is an activation point (when used with COM) for the in-built Alert tone generator. The Alert

tone will mute all program sources when it is active.

EVAC: The Evac terminal is an activation point (when used with COM) for the in-built Evacuation tone generator. The

Evac tone will mute all program sources when it is active.

15 Pin Connectors

Eight 15 pin 'D Sub' connectors are provided as a logic input from each of the 8 zone microphones. 15 core shielded cable

is recommended (pin configuration-back page). Cable lengths from the matrix have been tested to 100 metres. Micro-

phones 1 and 2 have priority over Mic's 3-8 and need to be wired back to the matrix. These need to be wired without

looping. Microphones 3-8 however can either be cabled back to the matrix or 'daisy-chained' (15 pin input and output

connectors are provided on each mic). No more than 3 mics are to be 'daisy-chained.' Although the 15 pin logic cables

can be daisy-chained, please note that the audio from each mic (mic cable) needs to be individually wired from each mic

back to the matrix (see Zone Inputs).

Zone Outputs

An output is provided for each of the eight zones. Each is an active balanced XLR connection with a nominal level of 1.5

volts @ 600 ohms. This signal is designed to run into the balanced line level input of a power amplifier. It can however

be used with unbalanced inputs over reasonably short runs. The pin connections are; pin #1-earth; pin #2-high (+); pin

#3-low (-). When used in unbalanced applications, do not connect Pin 3 to ground.