Albalá Ingenieros DSW3000C03 User manual

DSW3000C03
G.703 2048 kbit/S (E1) AUTOMATIC CHANGE-OVER SWITCH
Version 1.0
Albalá Ingenieros, S.A.
Medea, 4 - 28037 Madrid - Spain
21 December 2016 - © Albalá Ingenieros S.A. - All rights reserved

DSW3000C03

DSW3000C03
G.703 2048 kbit/S (E1) AUTOMATIC CHANGE-OVER SWITCH
Version 1.0
1. DESCRIPTION ...................................................................................................................... 5
1.1. The DSW3000C03 .......................................................................................................................... 5
1.2. Features ............................................................................................................................................. 6
1.3. Block diagram .................................................................................................................................. 7
2. SPECIFICATIONS ................................................................................................................. 9
3. INSTALLATION .................................................................................................................. 11
3.1. Initial inspection .......................................................................................................................... 11
3.2. Safety instructions ...................................................................................................................... 11
3.3. Environmental considerations ................................................................................................ 12
3.4. Power considerations ................................................................................................................. 12
3.5. Installing the module in the mounting frame ................................................................... 12
3.6. Interconnection ............................................................................................................................ 14
3.6.1. GPI connections ................................................................................................................... 15
3.6.2. Bypass control input .......................................................................................................... 16
3.6.3. GPO connections ................................................................................................................. 17
4. OPERATION ...................................................................................................................... 19
4.1. Front panel description .............................................................................................................. 19
4.2. Configuration from the front panel ...................................................................................... 21
4.3. Functional description ............................................................................................................... 21
4.3.1. Operation in Automatic Mode ....................................................................................... 21
4.3.2. Operation in Semiautomatic Mode .............................................................................. 22
4.3.3. Operation in Manual Mode ............................................................................................. 22
4.4. Description of the GPI connector ........................................................................................... 22
4.5. Module remote control and supervision ............................................................................. 24
4.5.1. Details of the DSW3000C03 registers ......................................................................... 25
5. GLOSSARY ........................................................................................................................ 27
6. REGULATIONS .................................................................................................................. 29
7. VERSIONS ......................................................................................................................... 31

DSW3000C03

Albalá Ingenieros | Manual DSW3000C03
1. DESCRIPTION
1.1. The DSW3000C03
The DSW3000C03 automated switch is a selector for digital streams in ITU-T G.703
format at 2048kbit/s that operates depending upon the presence of signals at its inputs
and the status of its GPI connectors, all based upon a set of priorities.
In order to detect a lack of signal at the inputs, the DSW3000C03 includes Loss of Signal
detectors (LOS) and Alarm Indicator Signals (AIS) for each input.
The DSW3000C03 provides three inputs labeled Main, Reserve and Auxiliary. The
selected input at any given time is distributed to three outputs. In the case of a power
supply failure, a bypass is performed from the Main input to one of the three outputs.
The DSW3000C03 provides three operating modes: selection of the input can be
Automatic, Semiautomatic or Manual. Any change in the input selected is announced via
an LED and an audible beep.
It is possible to monitor the DSW3000C03 status remotely using a communications
controller module installed in the same mounting frame. In addition, certain controller
modules provide SNMP management and the ability to record events in a file including
date and time information for further analysis.
The DSW3000C03 is a TL3000 terminal line module and can be housed in a three rack
unit (3 RU) UR3000 mounting frame or a 1 RU UR3100 mounting frame.
The DSW3000 family includes several automated switches for different signal types. The
following variations exist:
• DSW3000C01: Automated switch for DVB-ASI and SD-SDI signals.
• DSW3000C02: Automated switch for ITU-T G.703 signals at 155,520kbit/s (STM-1).
• DSW3000C03: Automated switch for ITU-T G.703 signals at 2048kbit/s (E1).
• DSW3000C04: Automated switch for ITU-T G.703 signals at 34,368kbit/s (E3).
• DSW3000C05: Automated switch for ITU-T G.703 signals at 44,736kbit/s (DS3).
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Albalá Ingenieros | Manual DSW3000C03
1.2. Features
• Automatic change-over switch for 2048kbit/s ITU-T G.703 signals.
• Switches between three input sources.
• Provides LOS and AIS detectors for each input.
• The selected input is distributed to three outputs.
• Provides three modes of operation: Automatic, Semiautomatic and Manual.
• Main input will be bypassed to one of the outputs in case of power loss.
• Acoustic and visual indicators warn against changes in the selected source.
• Front panel indicators for input selected, absence of signal, operating mode and alarm.
•Module control and supervision can be done remotely when the mounting frame is
equipped with a communications controller module.
•One UR3000 mounting frame can house up to 12 DSW3000C03 modules. If power
supply redundancy is required and FA3000 or FA3001 modules are used then only 10
modules can be housed in the mounting frame. If PSU3300 or PSU3301 modules are
used for this purpose then up to 12 modules can be installed.
• One UR3100 mounting frame can house up to three DSW3000C03 modules.
• Low power.
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Albalá Ingenieros | Manual DSW3000C03
1.3. Block diagram
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Albalá Ingenieros | Manual DSW3000C03
DSW3000C03
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Albalá Ingenieros | Manual DSW3000C03
2. SPECIFICATIONS
2 Mbps G.703 signal input
Connector BNC
Impedance 75Ω ± 1 %
Return loss >18dB up to 3.072 MHz
Encoding and electrical characteristics According to ITU-T G.703.9 standard
2 Mbps G.703 signal output
Connector BNC
Impedance 75Ω ± 1 %
Return loss >18dB up to 3.072 MHz
Encoding and electrical characteristics According to ITU-T G.703.9 standard
GPI input
Connector Plug-in terminal,
3.81mm pitch
Type 10 kΩ pull-up to 5 V
Number of inputs 3
Activation Closing contact to ground
Allowed voltage range ±50 V
GPO output
Connector Plug-in terminal,
3.81mm pitch
Type Open/closed drain to ground
Number of outputs 5
Allowed voltage range 0 .. 50V 150mA max.
General
Maximum power supply current + 250 / - 110 mA
Operating temperature range 0 .. 50 °C
Approximate weight 325 g
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Albalá Ingenieros | Manual DSW3000C03
DSW3000C03
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Albalá Ingenieros | Manual DSW3000C03
3. INSTALLATION
THE DSW3000C03 MODULE CONTAINS ELECTRONIC DEVICES SENSITIVE TO
ELECTROSTATIC DISCHARGE. Always use antistatic bags clearly identified
with a high degree of shielding for storage and transportation.
The DSW3000C03 module is composed of two parts: one DSW3000P03 main board and
one DSW3000P02 rear board. Both parts must be installed in a UR3000 or UR3100
mounting frame following the instructions in the corresponding section of this chapter.
3.1. Initial inspection
Verify that the package has been properly handled during transport. After opening the
packaging, check that one DSW3000P03 main board and one DSW3000P02 rear board
are inside.
You must notify your Albalá Ingenieros distributor or dealer of any damage or defects
observed.
Follow the instructions in this manual to install this module in the mounting frame.
3.2. Safety instructions
•This equipment must be connected to a mains outlet with a protective
earth connection. Never use extension cords that do not have protective
earthing connection. The lack of an effective electrical connection between
the ground pin in the mains input connector of the equipment and the
protective earth of the electrical power distribution can cause serious harm.
•All modules of the Albalá Ingenieros TL3000 terminal line can be
hot-plugged or unplugged without suffering any damage or affecting the
processes that are currently taking place in other modules in the same
mounting frame. When a module is installed in an empty bay of a mounting
frame, it is necessary to mount the rear board that is part of that module.
Prior to installing this board, the mounting frame must be disconnected
from the power supply network. This is required because in addition to the
risk of electrocution for the person handling the device it is possible that a
high instantaneous current coming from the power supply could damage
the connectors and components of the mounting frame and/or the rear
board.
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Albalá Ingenieros | Manual DSW3000C03
•The DSW3000C03 module and the mounting frame should always be
installed, maintained, operated and removed by personnel with sufficient
technical qualifications. The equipment should never be placed in damp
areas, near splashing liquid, or in explosive or corrosive atmospheres.
Neither modules nor mounting frames can be used in applications that
could endanger human life.
3.3. Environmental considerations
This symbol indicates that this equipment must be deposited at a collection
point for proper waste treatment once it has reached the end of its useful
life.
3.4. Power considerations
The UR3000 and UR3100 mounting frames can house as many DSW3000C03 modules
as will fit in them.
3.5. Installing the module in the mounting frame
The steps needed to install the DSW3000C03 module with the rear board in the
mounting frame are:
1 - Disconnect all power cords from the power supplies of the mounting frame.
2 - Remove the blank panels covering the front and rear of the empty bays chosen for
installing the DSW3000C03 in the mounting frame.
3 - Install the DSW3000P02 rear board ensuring that its 12-pin connectors are properly
aligned with the mounting frame´s mating connectors. Check that the orientation of
the board is correct by looking at the placement of the text printed on it according to
the illustration below.
4 - Attach the rear board to the mounting frame with two M3 metric screws and tighten.
5 - Insert the DSW3000P03 board (main board of the DSW3000C03 module) into the
front of the mounting frame. The edges of the card slide into two plastic guides inside
the mounting frame.
6 - Affix the main board to the mounting frame using the two screws included on the
front panel.
After these steps, the module is ready to be connected to other equipment.
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Albalá Ingenieros | Manual DSW3000C03
Details for installation of the module in 3 RU mounting frames
Details for installation of the module in 1 RU mounting frames
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Albalá Ingenieros | Manual DSW3000C03
3.6. Interconnection
The following figure shows the DSW3000C03 module rear board connector layout.
Rear view of the DSW3000C03
The DSW3000C03 module provides three signal inputs (MAIN IN, RES.IN and AUX. IN)
and three signal outputs (MAIN OUT,OUT and OUT). The connector labeled ''MAIN OUT''
corresponds to the output signal protected by a bypass relay that connects it to ''MAIN
IN'' and provides signal continuity in the case of a power supply failure. The module also
provides three GPIs (MAIN FAIL IN,RES. FAIL IN and AUX. FAIL IN), five GPOs (MAIN FAIL
OUT,RES. FAIL OUT,AUX. FAIL OUT,MAIN SEL. and RES. SEL.) and an input for control of the
bypass relay, (BYPASS) whose function is described in the following table:
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Albalá Ingenieros | Manual DSW3000C03
TERMINAL NAME FUNCTION
12 MAIN FAIL IN This input is used to indicate that an error in the signal has
occurred at the MAIN IN input before reaching the DSW3000
11 RES. FAIL IN This input is used to indicate that an error in the signal has
occurred at the RES IN input before reaching the DSW3000
10 AUX. FAIL IN This input is used to indicate that an error in the signal has
occurred at the AUX IN input before reaching the DSW3000
9GND Ground connection
8MAIN FAIL OUT This output indicates that an error has occurred at the main input,
MAIN IN
7RES. FAIL OUT This output indicates that an error has occurred at the reserve
input, RES IN
6AUX. FAIL OUT This output indicates that an error has occurred at the auxiliary
input, AUX IN
5SEL. MAIN This terminal indicates the main input, MAIN IN, has been selected
4SEL. RES This terminal indicates the reserve input, RES IN, has been selected
3GND Ground connection
2BYPASS
This terminal is normally connected to ground with an internal
jumper. This jumper is only removed when performing a bypass
from the main input to one of the outputs
1GND Ground connection
The rear interconnection board is not designed to withstand mechanical stress. The
wiring must be fastened properly to the frame where the mounting frame is housed to
prevent the rear board from supporting the weight of the cables.
3.6.1. GPI connections
The GPIs use 3.81mm pitch terminal block connectors and their equivalent circuit is
shown in the following:
For modules with software version 1.6 or earlier:
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Albalá Ingenieros | Manual DSW3000C03
For modules with software versions after 1.6:
Before connecting these signals please consult the maximum values shown in the
specifications section. Never connect dangerous potentials to GPI inputs.
3.6.2. Bypass control input
The bypass control input uses 3.81mm pitch terminal block connectors and their
equivalent circuit is shown in the following:
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Albalá Ingenieros | Manual DSW3000C03
3.6.3. GPO connections
GPO outputs use 3.81mm pitch terminal block connectors and their equivalent circuit
is as follows:
Before connecting these signals please consult the maximum values shown in the
specifications section. Never connect dangerous potentials to GPO outputs.
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Albalá Ingenieros | Manual DSW3000C03
DSW3000C03
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Albalá Ingenieros | Manual DSW3000C03
4. OPERATION
This section describes the significance of the front panel indicators of the DSW3000C03
module and their remote control and monitoring ability.
4.1. Front panel description
The appearance of the front panel and the elements it contains are shown in the
following illustration.
Front panel of the DSW3000C03
The panel contains the following elements:
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Albalá Ingenieros | Manual DSW3000C03
In the MODE box:
FULL AUTO: Green. This LED lights up when the operating mode selected is
Automatic.
HALF AUTO: Green. This LED lights up when the operating mode selected is
Semiautomatic.
If neither of these two LEDs is lit then the operating mode is Manual.
SELECT: Pushbutton. This button is used to select the operating mode. A
sustained press of this button changes the operating mode. In
Manual Mode, brief presses of this button change the input
selected. The operating mode selected using this button is stored
in non-volatile memory and is restored in the case of a power
supply failure.
In the SEL. INPUT box:
MAIN: Green. This LED lights up when the main input is selected (MAIN
IN).
RESERVE: Green. This LED lights up when the reserve input is selected (RES
IN).
AUXILIAR: Green. This LED lights up when the auxiliary input is selected (AUX
IN).
Information regarding the input selected is also available via the GPI connector on the
SEL. MAIN and SEL. RES. terminals.
In the INPUT FAIL box:
MAIN: Red. This LED lights up when no signal is present at the (MAIN IN)
input or the corresponding GPI error input (MAIN FAIL IN) for the
main input is activated.
RESERVE: Red. This LED lights up when no signal is present at the (RES IN)
input or the corresponding GPI error input (RES FAIL IN) for the
main input is activated.
AUXILIAR: Red. This LED lights up when no signal is present at the (AUX IN)
input or the corresponding GPI error input (AUX FAIL IN) for the
main input is activated.
Information regarding the input error signals is also available via the GPI connector on
the MAIN FAIL OUT,RES. FAIL OUT and AUX. FAIL OUT terminals.
In the ALARM box:
FAILURE: Red. Alarm indicator. This LED blinks when the input selected
changes.
RESET: Pushbutton. A brief press of this button silences the audible beep
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