3ag-27321-Aaaa-tqzza-04-Uds Pba Cmxio a Central Multiplexer

CMX In-Out 120 Ω CMXIO-A

3AG 27321 AAAA TQZZA Edition 04 Released 1 / 16

1 Identification -2

2 Introduction -2

3 Features and Application Notes -2

4 General Description -3

5 Functional Overview -5

6 External Interfaces -7

7 Physical Description -13

8 Power Supply -14

9 Cables and Installation -14

10 Standards -15

CMXIO-A CMX In-Out 120 Ω


1 Identification

Table 1 provides identification of the CMX In-Out 120 Ω (CMXIO).

Table 1: Identification of the CMXIO

2 Introduction

This document describes the CMX In-Out 120 Ω - version A (CMXIO-A) which is part of the 1511 Media Access Cross-Connect (1511 MAX).

3 Features and Application Notes

The CMXIO-A:

• is used in an 1511 MAX shelf• provides 4 E1 interfaces• provides 2 LAN management interfaces• provides 2 BITS inputs and 1 output• provides 4 Alarm inputs and 4 dry outputs• provides 2 Alarm Lamp drivers• distributes battery power to the CMX-A boards• operates within the temperature range of -5 °C to +60 °C• contains a Remote Inventory (RI) circuit• permanently monitors the voltage on both battery inputs

Part number Mnemonic Description

3AG 27321 AAAA CMXIO-A CMX In-Out 120 Ω Interface Unit



4 General Description

The CMXIO-A must be viewed as a companion board for the Controller Multiplexer Cross-Connect (CMX-A). It performs the interface function of the 1511 MAX.

Note: for more information on the supported appliques, refer to the Unit Data Sheets (UDS) of the relevant appliques.

Figure 1 shows the position of the CMXIO-A in the 1511 MAX system.

Fig. 1: Position of the CMXIO-A in the 1511 MAX System

Figure 2 shows the position of the CMXIO-A in the 1511 MAX shelf. The board is placed in the slot position next to and to the right of the CMX-A boards.

Applique

NE1

CMXFXS

Voice

FXO

TPIFTeleProtection

Data

CMXIO

Battery

4 x E1

BITS

LANmanagement

Alarms

CLI

DAT

EM

PSTN

Framer/LIUANE1

CMX

PBX

NE1Framer/LIU

NE1Framer/LIU

NE1Framer/LIU

NE1Framer/LIU

NE1Framer/LIU

AppliqueANE1

AppliqueANE1

A

B

N x E1

N x E1

N x E1

HSPTP

CODCoDirectional

CONDContraDirectional

CLI

MRDVoice



Fig. 2: Position of the CMXIO-A in the 1511 MAX Shelf



5 Functional Overview

The external interfaces, of the CMX-A boards are provided on the separate CMXIO-A board, common to the redundant CMX-A boards. The CMXIO-A routes the external interfaces to the active CMX-A board. Figure 3 shows the CMXIO-A functional architecture.

Fig. 3: CMXIO-A Functional Architecture

Table 2 provides the descriptions of the connectors of Figure 4 Front view.



Fig. 4: CMXIO-A Front View

Table 2: Front View Definitions

Numbers Definitions

1 Power Supply Connector

2 RJ45 - Lamp Out or Connector to another board

3 LAN RJ45 - Ethernet

4 Bits Out

5 4x RJ45 - Alarm In

6 Label - Board Name and Release

7 4x RJ45 - Alarm Out

8 4x E1 - RJ45 - 120 ohms

9 2x Bits In

10 LAN RJ45 - Ethernet

11 RJ45 - Lamp Out or Connector to another board

12 BAT-B Power On/Off Switch

13 BAT -A Power On/Off Switch



6 External Interfaces

Table 3 gives an overview of the external interfaces of the CMXIO-A board:

Table 3: CMXIO-A Board External Interfaces

Note: The external interfaces with mini coax connectors and E1 interfaces are protected against electrostatic discharge.

Note: Each of the relay contacts (alarm outputs, lamp interface) is protected by a 0.5 A quick speed fuse.

Power

A 3-pin male power Dsub connector is used to connect the BATtery A+B (BATA, BATB) and the BATtery RETurn (BATRET). The power supply is protected against overvoltage and overcurrent and in addition filtered. The protected and filtered –48V power supply is distributed to both CMX-A boards.

The status of the circuit breaker is pernamently monitored. When a circuit breaker is switched off an alarm is shown on the management system.

Table 4provides the details of the Male Connector of the Power Supply.

Interface Number Connector Type

Power 1 Dsub (3-pin)

E1 uplink 4 RJ45

BITS 2 Mini coax

BITS-O 1 Mini coax

LAN management 2 RJ45

Alarm inputs 4 RJ45

Alarm outputs 4 RJ45

Lamp Interface 2 RJ45



Fig. 5: CMXIO-A Power Connector

Table 4: CMXIO Power Table Connecter

For board fusing please refer to the Safety Manual (3AG 28300 AAAA TCZZA).

E1 Uplink Interfaces

The board is equipped with 4 RJ45 connectors for 4 E1 interfaces at 2048 kbit/s, with a 120 Ω balanced impedance, according to ITU-T Recommendation G.703.

Table 5 shows the layout of the front panel connector.

Fig. 6: RJ45 Cable Connector

PIN Number Descriptions

A1 Power Supply - BAT-A -48/-60VDC

A2 Power Supply - Battery Return

A3 Power Supply - BAT-B-48/-60VDC



Fig. 7: RJ45 Connector Pin Configuration

Table 5: E1 RJ45 Connector Layout

(See Figures 6 and 7 for RJ45 Pin Numbering).

BITS and BITS-O Interfaces

The board provides:

• BITS-INA double 1.0/2.3 mini coax connector for 2 external clock inputs, according to ITU-T Recommendation G.703, section 13, 2048 kHz synchronization interface.

• BITS-OUTA single 1.0/2.3 mini coax connector for system clock output, according to ITU-T Recommendation G.703, section 13, 2048 kHz synchronization interface.

Pin Signal

1 Line in Y

2 Line in Z

3 Line in Ground

4 Line out Y

5 Line out Z

6 Line out Ground

7 PE

8 PE



LAN Management

The board is equipped with 2 RJ45 connectors for 2 Ethernet 10/100 Base-Tx interfaces. The first interface is to connect to a management station. The second interface is meant for daisy chaining towards another 1511 MAX. The possible settings per management interface are:

• disabled• auto negotiation• 10 Mbit/s half duplex• 10 Mbit/s full duplex• 100 Mbit/s half duplex• 100 Mbit/s full duplex

Table 6 shows the layout of the front panel connector for LAN interface.

Table 6: Connector Layout for LAN Interface


Alarm Inputs

The board has 4 alarm inputs, each of them terminating on a separate RJ45 connector.

Each alarm input can individually be configured as a 1-wire or 2-wire interface.

• 1-wire interface:When used as a 1-wire interface, the alarm input is connected (using 1 wire) to 1 pole of an external contact. The other pole of this external contact is connected to battery return. When the external contact is closed, the alarm input becomes connected to battery return.

• 2-wire interface:When used as a 2-wire interface, the alarm input is connected (using 2 wires) to both poles of an external dry contact.

Table 7 shows the layout of the front panel connector for ALM1, ALM2 and ALM3.

Pin Signal Pin Signal

1 TxData + 5 -

2 TxData - 6 RecvData -

3 RecvData + 7 PE

4 - 8 PE



Table 7: Alarm Input Connector Layout for ALM1, ALM2, ALM3 and ALM4


Alarm Outputs

The board has 4 alarm outputs, each of them terminating on a separate double 3-pole relay contact (dry out contact) on a RJ45 connector.

Table 8 shows the layout of the front panel connectors for the alarm output interfaces.

Table 8: Alarm Output Connector Layout



1 ALM xa 5 PE

2 ALM xb 6 PE

3 PE 7 PE

4 PE 8 PE


1 ALM xa-NO 5 PE

2 ALM xa-C 6 ALM xb-NO

3 ALM xa-nC 7 ALM xb-C

4 PE 8 ALM xb-nC



Lamp Interfaces

2 lamps on the rack are switched on and off via a relay contact on the board. The board is equipped with two RJ45 connectors for daisy chaining the lamp interfaces of several shelves.

Table 9 shows the layout of the front panel connectors for both lamp interfaces.

Table 9: Alarm Input Connector Layout for LAMPS Interface


Fig. 8: Lamp Interfaces

The function of the signals is as follows:

• The signal on Pin 1 is used to drive the red lamp (indicating Critical or Major alarms)• The signal on Pin 2 is used to drive the orange lamp (indicating Minor or Warning

alarms)

The lamps in the top-rack unit are permanently connected to battery-return. The lamps must be connected to the LAMPx signals on the RJ45 connectors. The CMXIO activates the lamp by switching the wire to battery.


1 LAMP 0 5 PE

2 LAMP 1 6 PE

3 PE 7 PE

4 PE 8 LAMPRET



7 Physical Description

Figure 9 shows the front panel of the CMXIO-A board.

Fig. 9: CMXIO-A Board Front Panel

Dimensions

The dimensions of the CMXIO-A are:

• Height: 268 mm• Depth: 160.02 mm• Width: 40.64 mm



Weight

The weight of the CMXIO-A is 0.940 kg.

8 Power Supply

The CMXIO-A is powered with a nominal voltage of -48VDC (with a range between -38.4 VDC and -72 VDC).

• When the CMXIO-A is powered with its nominal voltage of -48VDC the maximum power consumption is 1.7 W and the current is 35 mA.

• When the maximum voltage of -72 VDC is applied the maximum power consumption is 3.6 W and the current is 50 mA.

9 Cables and Installation

For more information about cabling and installation refer to the 1511 MAX Hardware Installation Manual.

Switch Settings

The CMXIO-A board is equipped with 4 E1 interfaces (RJ45 connector). The “Line in Ground” signal on pin 3 of each E1 connector can be connected to Frame Ground or left open.

For the 2 BITS clock input interfaces, a difference in earth potential at each end of the cable, may result in unwanted current flowing in the outer conductor of the coaxial cable, through connectors and through the receiver input circuitry. To prevent this, a DC isolation can be switched in between the outer conductor and bonding network at the receiver interface. Each receiver circuit is equipped with a switch:

• Position A: no DC blocking• Position B: DC blocking by means of a 22 nF capacitor.

The selection is done by an individual switch for each E1 circuit and BITS clock input. Figure 10 shows the location of the switches.



Fig. 10: Switch Positions on CMXIO-A

• S200 is related to E1 port 1• S201 is related to E1 port 2• S202 is related to E1 port 3• S203 is related to E1 port 4• S300 is related to BITS clock input 1• S301 is related to BITS clock input 2

The following applies for the 6 switches:

• Switch lever in position 1-2: Rx cable screen DC connected to ground.• Switch lever in position 2-3: Rx cable screen AC coupled to ground.

10 Standards

The applicable standards for the CMXIO-A board are listed in the 1511 MAX Safety Manual.

S300

S301

S200

S201

S202

S203

3 2 1

3 2 1

3 2 1

3 2 1

3 2 1

3 2 1

1 2 3

Position 1-2:1 2 3

Position 2-3:



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3ag-27321-Aaaa-tqzza-04-Uds Pba Cmxio a Central Multiplexer