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GSM/EDGE BSS, rel.

RG10(BSS), operatingdocumentation, issue 04

EXAU-A

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The information in this document is subject to change without notice and describes only the

product defined in the introduction of this documentation. This documentation is intended for the

use of Nokia Siemens Networks customers only for the purposes of the agreement under whichthe document is submitted, and no part of it may be used, reproduced, modified or transmitted

in any form or means without the prior written permission of Nokia Siemens Networks. The

documentation has been prepared to be used by professional and properly trained personnel,

and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomes

customer comments as part of the process of continuous development and improvement of the

documentation.

The information or statements given in this documentation concerning the suitability, capacity,

or performance of the mentioned hardware or software products are given "as is" and all liability

arising in connection with such hardware or software products shall be defined conclusively and

finally in a separate agreement between Nokia Siemens Networks and the customer. However,

Nokia Siemens Networks has made all reasonable efforts to ensure that the instructions

contained in the document are adequate and free of material errors and omissions. Nokia

Siemens Networks will, if deemed necessary by Nokia Siemens Networks, explain issues which

may not be covered by the document.

Nokia Siemens Networks will correct errors in this documentation as soon as possible. IN NO

EVENT WILL Nokia Siemens Networks BE LIABLE FOR ERRORS IN THIS DOCUMENTA-

TION OR FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL, DIRECT, INDI-

RECT, INCIDENTAL OR CONSEQUENTIAL OR ANY LOSSES, SUCH AS BUT NOT LIMITED

TO LOSS OF PROFIT, REVENUE, BUSINESS INTERRUPTION, BUSINESS OPPORTUNITY

OR DATA,THAT MAY ARISE FROM THE USE OF THIS DOCUMENT OR THE INFORMATION

IN IT.

This documentation and the product it describes are considered protected by copyrights and

other intellectual property rights according to the applicable laws.

The wave logo is a trademark of Nokia Siemens Networks Oy. Nokia is a registered trademark

of Nokia Corporation. Siemens is a registered trademark of Siemens AG.

Other product names mentioned in this document may be trademarks of their respectiveowners, and they are mentioned for identification purposes only.

Copyright Nokia Siemens Networks 2009. All rights reserved

f Important Notice on Product SafetyElevated voltages are inevitably present at specific points in this electrical equipment.

Some of the parts may also have elevated operating temperatures.

Non-observance of these conditions and the safety instructions can result in personal

injury or in property damage.

Therefore, only trained and qualified personnel may install and maintain the system.

The system complies with the standard EN 60950 / IEC 60950. All equipment connected

has to comply with the applicable safety standards.

The same text in German:

Wichtiger Hinweis zur Produktsicherheit

In elektrischen Anlagen stehen zwangslufig bestimmte Teile der Gerte unter Span-

nung. Einige Teile knnen auch eine hohe Betriebstemperatur aufweisen.

Eine Nichtbeachtung dieser Situation und der Warnungshinweise kann zu Krperverlet-

zungen und Sachschden fhren.

Deshalb wird vorausgesetzt, dass nur geschultes und qualifiziertes Personal die

Anlagen installiert und wartet.

Das System entspricht den Anforderungen der EN 60950 / IEC 60950. Angeschlossene

Gerte mssen die zutreffenden Sicherheitsbestimmungen erfllen.

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Table of ContentsThis document has 16 pages.

Summary of changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1 EXAU-A overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2 EXAU-A structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3 EXAU-A operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4 Chaining EXAU-A units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5 Power consumption of EXAU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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List of FiguresFigure 1 Dimensions and installation options of the EXAU-A . . . . . . . . . . . . . . . . . 9

Figure 2 Interfaces of the EXAU-A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 3 Displaying the same alarms on two EXAU-A units . . . . . . . . . . . . . . . . . 14

Figure 4 Displaying alarms from AL00 to AL05 on EXAU-A 1 and alarm from AL06

to AL11 on EXAU-A 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

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List of TablesTable 1 Cabling interfaces for EXAU-A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 2 Default colours of alarm signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 3 Indicator LEDs on front panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

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Summary of changesChanges between document issues are cumulative. Therefore, the latest document

issue contains all changes made to previous issues.

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EXAU-A overview

1 EXAU-A overview

Main functions of EXAU-A

The DX200 and IPA2800 network elements can be equipped with an external alarm unitto make the alarm monitoring more efficient. The External Alarm Unit (EXAU-A) is a

small device controlled by the HWAT-A plug-in unit in the DX200 network elements of

M98 mechanics, and the EHAT plug-in unit in the IPA2800 network elements. The

EXAU-A indicates alarms from the network element with indicator LEDs and a buzzer.

Normally the EXAU-As are mounted on the wall of the control room. They are easy to

install to all common wall materials. The power supply and alarms cables can enter the

unit from above or below the EXAU-A case, or from the upper or lower side as shown in

figure below.

In the DX200 M98 mechanics, the transmitter circuit of the HWAT-A is a constant current

generator, which provides a 24 mA current when the voltage at the output is below +3

V. The voltage at the output depends on the size of the load connected to the output andthe voltage at the other end of the load (range of variation is +5...-75 V).

In the IPA2800 mechanics, the transmitter circuit of the EHAT is a constant current gen-

erator, which provides a 20 mA current when the voltage at the output is below +3 V.

The voltage at the output depends on the size of the load connected to the output and

the voltage at the other end of the load.

The EXAU-A also has a second D25 connector, which makes it possible to chain several

EXAU-A units, so that the alarms can be displayed on more than one unit.

Dimensions of the EXAU-A unit are 153 mm (W) x 212 mm (H) x 53 mm(D). The indica-

tor LEDs have no printed markings, but the user can write the alarm identifications on

the face of the EXAU-A.

Network element

mechanics

Cable from EXAU-A

panel

Panel, connector Plug-in unit controlling

EXAU-A

DX200 i-series: DX

MSC/DX HLR, SGSN

CNDE CPEA, D25 HWAT-A

BSC3i CNDC CPRJ45, D25 HWAT-A

IPA2800; MGW, RNC CNDC CPSAL-B / CPSAL /

CPAL, D25

EHAT

Table 1 Cabling interfaces for EXAU-A

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Figure 1 Dimensions and installation options of the EXAU-A

Operating environment of EXAU

The EXAU-A is connected by an interconnection cable (for example, CNDC) directly to

the alarm panel of the network element concerned or via a crossconnection (DDF) to the

alarm panel of the network element concerned.

The second D25 connector of the EXAU-A can be used to chain several EXAUA units

together. This makes it possible to display the alarms on more than one unit.

The operating voltage (-48 V) is connected by separate cable to a terminal block on the

EXAU-A component board.

DN05209253

153

153

153

212

53

Alarm 1

Alarm 2

Alarm 3

Alarm 4

Alarm 5

Alarm 6

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* Alarms from AL00 to AL05 are regenerated in the Alarm Interface and forwarded

to the Alarm Output.

Figure 2 Interfaces of the EXAU-A

Signals AL00...AL11 are alarm inputs. These inputs can be activated by connecting 18

mA current through the input.

AL00

AL05ALARM INPUT

EXAU-A

AL06

AL11

ALARM OUTPUT

AL00*

AL05*

AL06

AL11

To alarm panel

0BW

-BW

POWER

SUPPLY

ALARM

INTERFACE

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2 EXAU-A structure

Mechanical structure of EXAU-A

The EXAU-A panel consists of a base assembly and a cover assembly with a compo-nent board attached to it with three attachment pins. The component board accommo-

dates also the power supply and alarm connectors.

Functionally, the EXAU-A panel consists of the following blocks:

component board (PCB) connected to the cover

base frame for mounting on the wall

alarm inputs, D25 connector on component board

alarm output, D25 connector on component board

six indicator LEDs connected to component board

buzzer mounted on component board

Test, Buzzer Reset and Silent Mode buttons connected to component board Silent Mode and Power On LEDs on the component board

power supply (-48 V).

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EXAU-A operation

3 EXAU-A operation

Principles of operation

The control section consists of D-type flip-flops and other CMOS logic.

The alarm inputs have been optoisolated of the controlling logic. In normal state, the

alarm inputs are open.

Darlington transistor array is used for driving the LEDs.

Alarms that activate the buzzer can be selected with DIP switch SW1.

The buzzer, like the indicator LEDs, are connected to six alarm inputs.

The buzzer can be switched off by the silent mode button. The test cutton is used to test

the operation of the indicator LEDs and the buzzer.

Power (-48V DC) is supplied via a protective switch SW2 and fuse F1. When the cover

assembly is opened, the power supply to the EXAU-A unit disconnected.

LEDs

The EXAU-A houses six alarm indicator LEDs on the front panel. Each alarm signal

(AL00-AL05) has an indicator LED. User can select with a DIP switch which alarms

activate the buzzer.

Buzzer

A buzzer is connected to indicator LEDs. The user can select with a DIP switch on the

component board those alarms which should activate the buzzer. There is also a Buzzer

Resetbutton for the buzzer. The Buzzer Reset turns off the buzzer, but the buzzer turns

back on when a new alarm signal arrives. The buzzer is set ON for all alarms by default.

With the BUZZER SELECT jumpers on Switch SW1 the user can set the buzzer for each

alarm (AL00 - AL05) ON or OFF.

Colour Position Signal Alarm

Red (1) uppermost (AL00) Alarm 1

Yellow (2) (AL01) Alarm 2

Green (3) (AL02) Alarm 3

Red (4) (AL03) Alarm 4

Yellow (5) (AL04) Alarm 5

Blue (6) lowermost (AL05) Alarm 6

Table 2 Default colours of alarm signals.

Colour Signal

Green Power on/off

Yellow Silent Mode on/off

Table 3 Indicator LEDs on front panel.

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Test button

The EXAU-A front panel accommodates a test button. With the Testbutton the user can

check the operation of the indicator LEDs and the buzzer.

Silent Mode button

The EXAU-A front panel accommodates a button for Silent Mode setting. By pressing

the Silent Mode button to down position the user can turn off the buzzer altogether.

When the Silent Mode is on, the yellow indicator LED on the front panel will be lit.

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Chaining EXAU-A units

4 Chaining EXAU-A unitsThe EXAU-A unit has an alarm output connector, which makes it possible to chain

EXAU-A units so that any alarms can be displayed on two or more EXAU-A units.

Displaying the same alarms on two EXAU-A units

The incoming alarms can be connected directly to the alarm output connector, which is

then connected to another EXAU-A unit with a direct cable. This way the alarms dis-

played on EXAU-A 1 can also be displayed on the EXAU-A 2 unit.

Note that the direct cable is not included in the EXAU-A delivery.

* Alarms from AL00 to AL05 are regenerated in the Alarm Interface and forwardedto the Alarm Output.

Figure 3 Displaying the same alarms on two EXAU-A units

Displaying alarms from AL00 to AL05 on EXAU-A 1 and alarms AL06 to AL11 on

EXAU-A 2

By connecting two EXAU-A units with a crossover cable that connects alarms from AL00

to AL05 from EXAU-A 1 to alarm connectors AL06 to AL11 on EXAU-A 2, it is possible

to display twelve different alarms on two EXAU-A units. When the units are connected

in this manner, alarms from AL00 to AL05 will be displayed on EXAU-A 1 and alarms

from AL06 to AL11 will be displayed on EXAU-A 2.

Note that the crossover cable is not included in the EXAU-A delivery.

AL00

AL05

ALARMINPUT

EXAU-A 1

AL00*

AL05*

ALARMOUTPUT

EXAU-A 2

AL00

AL05

ALARMINPUT

DIRECTCABLE

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* Alarms from AL00 to AL05 are regenerated in the Alarm Interface and forwarded

to the Alarm Output.

Figure 4 Displaying alarms from AL00 to AL05 on EXAU-A 1 and alarm from AL06

to AL11 on EXAU-A 2

AL00

AL05

ALARMINPUT

EXAU-A 1

AL06

AL11

AL00*

AL05*

AL06

AL11

ALARMOUTPUT

EXAU-A 2

AL00

AL05

AL06

AL11

ALARMINPUT

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Power consumption of EXAU

5 Power consumption of EXAUThe operating voltage of the EXAU-A panel is -48 V. The power consumption values are

as follows:

Mode Power consumption

Idle 1.7 W (Minimum)

1 alarm and buzzer 3.0W (Normal operation)

All alarms and buzzer 9.1W (Maximum)