Black Box MT1000A-13-R3 User manual

May 2006
MT1000A-13-R3
MT1000A-85-R3
CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]
T1 Fiber Multiplexer

Installing MT1000A 1
Quick Start Guide
If you are familiar with the MT1000A, use this guide to prepare it for operation.
Perform the following steps.
1. Installing MT1000A
Connecting the Tributary T1 Interfaces
 To connect the balanced T1 interface (RJ-45 connector)
• Connect the RJ-45 connector of the cable to the T1 port.
Connecting the Uplink
 To connect a fiber optic uplink
1. Clean the optical connectors using an approved solvent, and dry thoroughly
using optical tissue.
2. Connect to the two optical connectors designated TX (transmit output) and
RX (receive input) of the appropriate interface.
3. Pay attention to correct connection of the transmit and receive cables to the
corresponding connectors. Avoid sharp bends and twisting of the fiber-optic
cables.
For WDM option, only one fiber optic cable per link should be connected.
Note

Quick Start Guide MT1000A Installation and Operation Manual
2 Installing MT1000A
Connecting the Power
Before switching ON this unit and before connecting or disconnecting any
other cable, the protective earth terminals of this instrument must be
connected to the protective ground conductor of the mains (AC or DC) power
cord. If you are using an extension cord (power cable) make sure it is
grounded as well.
Any interruption of the protective grounding conductor (inside or outside the
instrument) or disconnecting the protective earth terminal can make this unit
dangerous. Intentional interruption is prohibited.
Connecting the AC/DC Power
The MT1000A is supplied with a Wide Range AC/DC power supply. The wide-
range AC/DC power supply accepts current from both AC and DC sources. From
an AC source, the power supply can receive any voltage in the range of 100 VAC
to 240 VAC. From a DC source, the 48 VDC power supply can receive any voltage
in the range of 36 to 72 VDC.
This unit is equipped with a standard AC-type 3-prong power input connector
located on the unit rear panel. This power input connector can be used for both
AC and DC voltage inputs. AC or DC power should be supplied to MT1000A
through the 5-feet (1.5m) standard power cable terminated by a standard 3-prong
plug.
 To connect MT1000A to AC power:
1. Connect the power cable to the connector on the MT1000A rear panel.
2. Connect the power cable to the electricity outlet.
 To connect MT1000A to 48V DC power:
• Refer to the green Supplement at the end of this manual titled:
DC Power Supply Connection – AC/DC Adaptor (AD) Plug.
Connecting the DC Power
When connecting the DC power, the PWR pin must be connected to the
ungrounded line of the central battery (either −or +). The RTN pin must be
connected to the grounded line of the central battery. The GND pin must be
connected to the protected earth of the building installation.
 To connect MT1000A to 24V DC power:
• Refer to the green Supplement at the end of this manual titled:
DC Power Supply Connection – Terminal Block Connector.
The DC installation procedure must be performed by a qualified technician.
Caution
Warning

MT1000A Installation and Operation Manual i
Contents
Chapter 1. Introduction
1.1 Overview..................................................................................................................... 1-1
General ................................................................................................................................1-1
Features................................................................................................................................1-1
Application ...........................................................................................................................1-2
1.2 Physical Description..................................................................................................... 1-2
Physical Characteristics .........................................................................................................1-2
1.3 Functional Description................................................................................................. 1-3
Fiber Optic Link....................................................................................................................1-3
Tributary Interface Characteristics .........................................................................................1-4
Test and Diagnostics Capabilities...........................................................................................1-5
Alarms and Alarm Indications................................................................................................1-5
Management and Monitoring................................................................................................1-6
Power Requirements............................................................................................................. 1-6
1.4 Technical Specifications............................................................................................... 1-7
Chapter 2. Installation and Setup
2.1 Introduction................................................................................................................. 2-1
2.2 Site Requirements & Prerequisites ............................................................................... 2-1
Power...................................................................................................................................2-1
Tributary Connections...........................................................................................................2-1
Fiber Optic Link Connections................................................................................................2-2
Front and Rear Panel Clearance ............................................................................................2-2
Unit Clearance .....................................................................................................................2-2
Ambient Requirements .........................................................................................................2-2
2.3 Equipment Needed ..................................................................................................... 2-2
2.4 Package Contents ........................................................................................................ 2-2
2.5 Installation and Setup .................................................................................................. 2-3
Setting the Internal Switches .................................................................................................2-3
2.6 Interfaces and Connections.......................................................................................... 2-6
Connector Location ..............................................................................................................2-6
Grounding............................................................................................................................2-7
Connecting the Power ..........................................................................................................2-7
Chapter 3. Operation
3.1 General ....................................................................................................................... 3-1
3.2 Turning MT1000A On ................................................................................................. 3-1
3.3 Front Panel Indicators and Switches............................................................................. 3-1
3.4 Normal Indications ...................................................................................................... 3-3
3.5 Turning MT1000A Off ................................................................................................. 3-3
Chapter 4. Configuration
4.1 Introduction................................................................................................................. 4-1
Terminal Management Modes...............................................................................................4-1
4.2 Setting Terminal Communication................................................................................. 4-1

Table of Contents
ii MT1000A Installation and Operation Manual
Setting the Terminal Communication Parameters ..................................................................4-1
Entering the Terminal Session................................................................................................4-2
4.3 Monitoring the System................................................................................................. 4-4
Monitoring the Status of the Local System .............................................................................4-5
Monitoring the Status of the Remote System..........................................................................4-7
4.4 Monitoring the Physical Ports....................................................................................... 4-7
Monitoring the Status of the Ethernet Port .............................................................................4-8
Monitoring the Status of the Up-Link.....................................................................................4-9
Monitoring the Status of the Channel Port .............................................................................4-9
4.5 Working with the System Log File .............................................................................. 4-10
Displaying the System Log File ............................................................................................4-10
Clearing the System Log File................................................................................................4-11
4.6 Alarms ....................................................................................................................... 4-11
Displaying System Alarms....................................................................................................4-11
Displaying Physical Port Alarms...........................................................................................4-12
4.7 Configuring the MT1000A ......................................................................................... 4-13
Configuring redundancy......................................................................................................4-13
Setting the Device Information............................................................................................4-16
Setting the network parameters...........................................................................................4-17
Setting up the Manager List.................................................................................................4-18
Setting the Management Access ..........................................................................................4-18
Setting the User Name and Password ..................................................................................4-19
Configuring the Control Port ...............................................................................................4-20
Resetting the Factory Defaults .............................................................................................4-21
Resetting the MT1000A ......................................................................................................4-21
4.8 Configuring the Physical Ports .................................................................................... 4-21
Configuring the Ethernet Port..............................................................................................4-21
Configuring the Channels....................................................................................................4-23
Configuring the Up-Links ....................................................................................................4-23
4.9 Diagnostics ................................................................................................................ 4-24
Setting the E2 Local Loopback Timeout...............................................................................4-24
Setting Loopbacks in the Local MT1000A............................................................................4-25
Setting Loopbacks in the Remote MT1000A........................................................................4-26
Displaying Loop Status........................................................................................................4-26
4.10 Viewing Hardware and Software Updates.................................................................. 4-27
4.11 Downloading Software .............................................................................................. 4-27
Downloading Software using the TFTP Protocol...................................................................4-27
Downloading Software using the X-Modem Protocol ........................................................... 4-29
4.12 Viewing file and file system information..................................................................... 4-29
Chapter 5. Testing and Diagnostics
5.1 Introduction................................................................................................................. 5-1
5.2 Troubleshooting........................................................................................................... 5-1
5.3 List of Alarms and Events ............................................................................................. 5-3
5.4 Diagnostic Tests ........................................................................................................... 5-4
Local Loopbacks in the MT1000A.........................................................................................5-5
Remote Loopbacks in the MT1000A .....................................................................................5-7
Appendix A. Interface Specifications
Appendix B. MT1000A MIBs

Overview 1-1
Chapter 1
Introduction
1.1 Overview
General
MT1000A is a second-order multiplexer that combines four T1 (1.544 Mbps)
tributary data streams into a single fiber optic link.
The fiber optic interface provides a secure link in hazardous or hostile
environments, increases the maximum connection range, and achieves immunity
against electrical interference and protection against the harmful effects of ground
loops.
Features
The main features of the MT1000A multiplexer are:
• MT1000A multiplexes four T1 channels over a single fiber optic link
• A pair of MT1000A units offers simple connectivity for four T1 channels at
distances of up to 120 km (74.5 miles)
• Redundant power supply
• Optional second fiber optic link for automatic backup
• Operates with multimode or single mode fiber; and single mode over single
fiber in the standalone version (WDM)
• An optional second power supply for power redundancy and fail-safe
operation
• Transmits each of the T1 channels independently, so that each T1 channel can
have it’s own clock source
• To facilitate system diagnostics, MT1000A features LED status indicators, AIS
alarm generation, recognition and dry contact closure upon link failure.
• Setup, control and diagnostics can be performed via ASCII terminal, SNMP
management station, or Ethernet link using Telnet or Web-based management
interface
• Conforms to ITU G.703, G.823, G.824 and G.955
• Compact 1U high size.

Chapter 1 Introduction MT1000A Installation and Operation Manual
1-2 Physical Description
Application
The following diagram illustrates a typical MT1000A configuration:
(Optional) Backup Fiber Link
Fiber Link
T1
T1
T1
T1
PBX
Mux
Router
Video
Conferencing
ASCII terminal linked
to supervisory port
PBX
Mux
Router
Video
Conferencing
ASCII terminal linked
to supervisory port
T1
T1
T1
T1
Figure 1-1 Typical MT1000A Application
1.2 Physical Description
Physical Characteristics
MT1000A is a compact unit, intended for installation on desktops or shelves. Unit
height is only 1U (1.75"). An optional rack-mount adapter kit enables installation of
MT1000A unit in a 19" rack.
The MT1000A front panel provides LED indicators, a control connector and a
headset jack, as illustrated in Figure 1-2. For more information about front panel
indicators and connectors, refer to Chapter 2.
Power connector/s, fiber optic connectors and T1 interfaces can be accessed via
the MT1000A rear panel. For more information about rear panel connectors, refer
to Chapter 2.
Figure 1-2 MT1000A Front Panel

MT1000A Installation and Operation Manual Chapter 1 Introduction
Functional Description 1-3
1.3 Functional Description
MT1000A contains the following printed circuit boards:
• One main circuit board that includes four tributary interfaces
• One or two fiber optic interface boards (A and B)
• One or two power supplies (A and B): AC/48 VDC wide-range power supply
or 24VDC power supply.
Fiber Optic Link
Fiber Optic Link Interface Characteristics
The fiber optic interface can be used to provide a secure link in hazardous or
hostile environments, increase the maximum connection range, and achieve
immunity against electrical interference and protection against the harmful effects
of ground loops.
The fiber optic interface complies with the requirements of ITU-T Rec. G.956, and
uses a proprietary signaling format that ensures optimum performance. To
optimally meet a wide range of system requirements, the fiber optic interface can
be ordered for operation over 62.5/125 micron multi-mode fibers (typical
attenuation 3.5 dB/km at 850 nm), as well as over low-loss 9/125-micron single-
mode fibers (typical attenuation 0.4 dB/km at 1310 nm, and 0.25 dB/km at 1550
nm). Most of the options can be ordered with ST, SC, or FC/PC connectors. In
addition, 9/125-micron single mode over a single fiber is also available (with SC
connectors only).
The SF3 option uses an SC/APC connector. The FO cable connected to it must
therefore be of the same type.
Table 1-1 provides information on the characteristics of the optical sub-system,
including the maximum range over typical fiber optic cable. The maximum range
values given in the table assume a 3 dB margin.
Not
e

Chapter 1 Introduction MT1000A Installation and Operation Manual
1-4 Functional Description
Table 1-1 Fiber Optic Interface Characteristics
Wavelength
[nm]
Fiber Type
[µm]
Transmitter Type Typical
Output
Power
[dBm]
Receiver
Sensitivity
[dBm]
Typical Max.
Range
[km miles]
Connector
Type
850 62.5/125
multimode
Laser (VCSEL) -15 -34 4.5 2.8 ST, SC,
FC/PC
1310 9/125
single mode
Laser -12 -34 47 29.2 ST, SC
1310 9/125
single mode
Laser
[long haul]
-2 -34 72 44.7 ST, SC,
FC/PC
1310
Transmit/Receive
9/125
single mode
Laser [SF3] -12 -27 20 12.4 SC/APC only
1310/1550
Transmit/Receive
9/125
single mode
Laser WDM [SF1] -12 -34 47 29.2 SC
1550/1310
Transmit/Receive
9/125
single mode
Laser WDM [SF2] -12 -34 47 29.2 SC
1550 9/125 single
mode
Laser -12 -34 76 47.2 ST, SC,
FC/PC
1550 9/125 single
mode
Laser
[long haul]
-1 -34 120 74.5 ST, SC,
FC/PC
All the fiber optic interface options offer high performance and have a wide
dynamic range, which ensures that the receiver does not saturate even when using
short fiber optic cables (saturation is caused when the optical power applied to the
receiver exceeds its maximum allowed input power, and results in very high bit
error rates).
Fiber Optic Link Redundancy Option
MT1000A can be ordered with one or two link interface options. Each interface
operates independently, and can be ordered from any of the link options listed
above.
In the fiber optic link redundancy option, MT1000A supports fully automatic
switching between link A and link B. Link A has priority. Therefore, normally link A
is selected for use, and link B is disabled. In case a failure occurs on link A,
MT1000A automatically switches to link B and continues providing normal service.
After link A returns to normal operation, it is automatically reselected.
Each link interface has its own set of indicators that show the current state of the
link. AIS alarm will not appear for the non-active optical link.
Tributary Interface Characteristics
The MT1000A tributary interfaces meet the requirements of ITU-T Rec. G.703.
Each tributary port has a 100Ωbalanced line interface terminated in an RJ-45
eight-pin connector.

MT1000A Installation and Operation Manual Chapter 1 Introduction
Functional Description 1-5
Line coding is B8ZS or AMI. The nominal balanced interface transmit level is
±3.0 V. The line attenuation is up to 12 dB, and each T1 signal is processed by an
adaptive equalizer that compensates for various cable lengths to ensure optimal
performance. Phase Locked Loops (PLL) are used to recover the clock signals, and
the resulting jitter performance complies with the requirements of ITU-T Rec.
G.824.
Each tributary interface has its own set of indicators that show the current state of
the tributary link. The user can disable the alarm indications generated by unused
interfaces (via internal switch and terminal, see section 2.5). AIS data streams are
transmitted instead of failed or unconnected tributary data streams.
Test and Diagnostics Capabilities
MT1000A has comprehensive test and diagnostics capabilities that include local
and remote loopbacks on the fiber optic link interface and on each tributary link.
The activation is performed by sending a special test sequence through the fiber
optic link. An automatic self-test on power-up further enhances maintenance.
For more information on activating loopbacks see Chapter 4.
Alarms and Alarm Indications
MT1000A can detect the following alarm conditions on each T1 and fiber optic
interface:
• Loss of input signal
• Loss of frame synchronization
• Reception of alarm indication (AIS) signal, which consists of a continuous
sequence of 1s.
• When AIS is received, loss of frame synchronization occurs. However, in this
case the alarm indicating the loss of frame synchronization is suppressed.
• AIS alarm will not appear for the non-active optical link.
When not all the tributaries are in use, the user can disable the alarm indications
related to the unused tributaries.
The response to alarm conditions is as follows:
• AIS is transmitted on each tributary output in the following cases:
 Loss of fiber optic input signal is detected
 AIS is received on the fiber optic input
 Loss of fiber optic frame synchronization.
• For each tributary, an AIS signal is sent instead of the tributary data stream
through the fiber optic link in the following cases:
 Loss of tributary input signal is detected
 AIS is received on the tributary input
 Loss of tributary frame synchronization.
Notes

Chapter 1 Introduction MT1000A Installation and Operation Manual
1-6 Functional Description
Front panel indicators display each alarm condition. In addition, a dedicated
connector is used to provide major and minor alarm indications, by means of dry
contacts.
The major alarm is activated in the following cases:
• MT1000A is not powered, or total power supply failure (e.g., when two power
supplies are installed, failure of both supplies).
• Loss of fiber optic input signals, or loss of fiber optic frame synchronization.
• Loss of tributary input signals, or loss of frame synchronization
• Unable to activate redundancy.
The minor alarm is activated in the following cases:
• Reception of AIS signal on the fiber optic input.
• Reception of AIS signal on tributary inputs.
Management and Monitoring
MT1000A units are equipped with a front panel serial RS-232 management port
and an Ethernet management port. The RS-232 port operates at user-selectable
rates of 9.6, 19.2, 38.4, 57.6 and 115.2 kbps over a null-modem cable. The
Ethernet port operates at a rate of 10 Mbps and can be set to full- or half-duplex.
The management interface supports the following management methods:
• Supervision Terminal–An ASCII terminal connected to the RS-232 port (or a
PC running a terminal emulation program) can be used as a supervision
terminal. All software required for the various management functions available
through the terminal is contained in the MT1000A.
• SNMP Management–The management interface includes an SNMP agent that
enables SNMP management of the MT1000A, using the UDP-over-SLIP (Serial
Link Internet Protocol) protocol. The SNMP agent also enables management
by other SNMP-based systems.
• Ethernet Management–A management terminal can be connected to the
MT1000A via an Ethernet connection, using a UTP-CAT5 cable. The 10BaseT
Ethernet interface supports a throughput of 10 Mbps. All software required for
the various management functions available through the terminal is contained
in the MT1000A.
Power Requirements
MT1000A can be ordered with one or two power supplies. Two types of power
supplies are available:
• AC/DC wide-range for operation on AC (100 to 240 VAC) or on
DC (40-72 VDC) sources
• DC operation on 24 VDC source.
Each power supply (A and B) can be ordered as one of the above power supply
types).

MT1000A Installation and Operation Manual Chapter 1 Introduction
Technical Specifications 1-7
When two power supplies are installed, they share the load; in case one of the
supplies fails or its input power is disconnected, the other power supply continues
providing power to MT1000A.
1.4 Technical Specifications
Fiber Optic Interface
Characteristics
Applicable Standards ITU-T Rec. G.956
Performance Refer to Table 1-1
Connectors ST, SC, or FC-PC, in accordance with ordered option
(SF1/SF2 options only available with SC)
(SF3 option only available with SC/APC)
T1 Tributary Interface
Characteristics
Applicable Standards ITU-T Rec. G.703, G.824
Nominal Line Data
Rate
1.544 Mbps
Line Code B8ZS / AMI
Line Impedance 100Ω, balanced
Signal Levels
Transmit Levels ±3.0 V ±20%
Receive Levels 0 dB to –12 dB
Jitter Performance Per ITU-T Rec. G.824
Connector RJ-45
Indicators Loss of input signal for the fiber optic link and for each
tributary
Reception of AIS signal for the fiber optic link and for each
tributary (loss of frame synchronization alarm suppressed)
TEST (when loopbacks are active)
Power on
Active Receiving link

Chapter 1 Introduction MT1000A Installation and Operation Manual
1-8 Technical Specifications
CONTROL DTE
Supervisory Port
(Optional)
Interface V.24/RS-232, asynchronous DTE interface
Connector 9-pin D-type female connector
Data Rate 9.6, 19.2, 38.4, 57.6 and 115.2 kbps
MNG-ETH
Physical Interface 10BaseT
Data Rate 10 Mbps
Transmission Mode Full/Half-duplex
Connector Shielded RJ-45
Cable Type UTP-CAT5
ALARM
Connector
Connector 9-pin D-type female connector
Contact Functions Set of floating normally-closed/normally-open contacts for
major and minor alarm indication
Contact Rating Maximum 1A (at 30 VDC or 30 VAC) through closed
contacts
Physical
Characteristics
Height 44 mm / 1.75 in (1U)
Width 440 mm / 17.4 in
Depth 240 mm / 9.5 in
Weight 2 kg / 4.4 lb
Power
Requirements
AC/DC Powered
Units
100 to 240 VAC, 50 or 60 Hz, 13.5 VA
-or-
40–72 VDC, 9.5 W
DC Powered Units 24 VDC, 7.5 W
Note: MT1000A can support up to two (redundant) power supplies.

MT1000A Installation and Operation Manual Chapter 1 Introduction
Technical Specifications 1-9
Environment
Operating
Temperature
0°to 50°C (32°to 122°F)
Relative Humidity Up to 90%, non-condensing

Chapter 1 Introduction MT1000A Installation and Operation Manual
1-10 Technical Specifications

Site Requirements & Prerequisites 2-1
Chapter 2
Installation and Setup
2.1 Introduction
MT1000A is delivered completely assembled. It is designed for operation as a
desktop unit or for mounting in a 19-inch rack. For instructions of rack mounting,
refer to the Rack Mounting Kit for 19 inch Racks guide that comes with the RM kit.
Mechanical and electrical installation procedures for MT1000A are provided in the
following sections.
After installing the unit, refer to Chapter 3 for operating instructions and system
configuration procedures.
In case a problem is encountered, refer to Chapter 5 for test and diagnostics
instructions.
No internal settings, adjustment, maintenance, or repairs may be performed
by either the operator or the user; such activities may be performed only by a
skilled technician who is aware of the hazards involved.
Always observe standard safety precautions during installation, operation, and
maintenance of this product.
2.2 Site Requirements & Prerequisites
Power
AC/DC-powered MT1000A units should be installed within 1.5m (5 feet) of an
easily accessible grounded AC outlet capable of furnishing a supply voltage in the
range of 100 to 240 VAC or 40–72 VDC.
DC-powered MT1000A units require a 24 VDC power source.
Tributary Connections
Each MT1000A tributary interface has one RJ-45 connector. Appendix A provides
the pin allocation for the RJ-45 connector.
The maximum allowable line attenuation between each tributary port and the
user's equipment is 12 dB.
Warning

Chapter 2 Installation and Setup MT1000A Installation and Operation Manual
2-2 Package Contents
Fiber Optic Link Connections
Each fiber optic link interface is terminated in two ST, SC, or FC-PC connectors, in
accordance with order. The maximum allowable attenuation depends on the
interface option ordered (refer to Table 1-1).
When working with the WDM option, only one fiber optic cable per link should
be connected. The two types – SF1 and SF2 – must work opposite each other; SF1
cannot work opposite SF1, and SF2 cannot work opposite SF2.
Front and Rear Panel Clearance
Allow at least 90 cm (36 inches) of frontal clearance for operator access. Allow at
least 10 cm (4 inches) clearance at the rear of the unit for interface cable
connections.
When planning the routing of fiber optic cables, avoid sharp bends.
Unit Clearance
Allow 1U clearance above MT1000A-E1 for proper ventilation.
Ambient Requirements
The ambient operating temperature of the MT1000A is 0°to 50°C (32°to 122°F),
at a relative humidity of up to 90%, non-condensing.
2.3 Equipment Needed
The equipment needed to install the MT1000A is:
• ST, SC or FC/PC fiber optic interface link connector cables
• RJ-45 T1 connector cables (for tributary interface)
• Phillips screwdriver (for installation in 19 inch rack).
2.4 Package Contents
The MT1000A package contains the following:
• MT1000A multiplexer
• CBL-DB9M/DB9F cable
• Two power supply cables
• AC/DC Adaptor (AD) plug
• MT1000A Installation and Operation manual

MT1000A Installation and Operation Manual Chapter 2 Installation and Setup
Installation and Setup 2-3
2.5 Installation and Setup
 To install MT1000A:
1. Set the internal switches.
2. Connect MT1000A’s various interfaces in the order listed here.
This module may include Class A or Class 1 lasers. For your safety:
• Do not look directly into the optical connectors while the module is
operating. Remember that the MT1000A starts operating as soon as it is
powered.
• Do not attempt to adjust the laser drive current.
The use of optical instruments with this product will increase eye hazard. Laser
power up to 1 mW at 850 nm and at 1310 nm could be collected by an optical
instrument.
Use of controls or adjustment or performing procedures other than those
specified herein may result in hazardous radiation exposure.
WARNING: The laser beam is invisible.
Setting the Internal Switches
Prior to MT1000A installation, check the positions of its internal switches. If
necessary, change the settings in accordance with the specific requirements of
your application.
Opening MT1000A Case
 To open MT1000A and access reach the internal switches:
1. Disconnect all the cables connected to MT1000A.
2. Unscrew the eight screws on the top panel.
3. Unscrew the screws on both side panels.
4. Remove the top cover.
Warning

Chapter 2 Installation and Setup MT1000A Installation and Operation Manual
2-4 Installation and Setup
Access to the inside of the equipment is permitted only to qualified and
authorized service personnel.
To avoid accidental electric shock, always disconnect the unit from the power
line and from all the cables before removing the cover.
Dangerous high voltages are present inside the MT1000A when it is connected
to power and/or to the links. Moreover, under external fault conditions,
dangerous high voltages may appear on the lines connected to the MT1000A.
Any adjustment, maintenance, and repair of the opened instrument under
voltage should be avoided as much as possible and, when inevitable, would be
carried out only by a skilled technician who is aware of the hazard involved.
Capacitors inside the instrument may still be charged even after the
instrument has been disconnected form its source of supply.
The MT1000A contains components sensitive to electrostatic discharge (ESD). To
prevent ESD damage, avoid touching the internal components, unless also
touching the MT1000A frame.
There are jumpers that are not listed below. They are set by the manufacturer and
should not be touched.
Setting the Internal Switches
The internal switches are located on the MT1000A main and interface boards as
identified in Figure 2-1. The functions of the switches are described in Table 2-1.
 To set the switches:
1. Identify the switch locations, refer to Figure 2-1.
2. Change the settings as required (refer to the following table for settings).
Warning
Caution