VeEX TX150 User manual

TX150 SONET and PDH/DSn Analyzer e-
Manual
Please direct all questions to your local VeEX Sales Office, Representative or Distributor or contact VeEX technical support at
www.veexinc.com
© Copyright 2010 VeEX Incorporated. All rights reserved. No part of this user manual may be reproduced, translated into a
foreign language or be transmitted electronically without prior agreement and written consent of VeEX Incorporated as
governed by International copyright laws. Information contained in this manual is provided "as is" and is subject to change
without notice.
™Trademarks of VeEX Incorporated have been identified where applicable, however the absence of such identification does
not affect the legal status of any trademark.
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Table of Contents
1.0 Introduction
2.0 About this guide
3.0 Safety Information
4.0 Basic Operations
4.1 Keypad
4.2 Touch-Screen Display
4.3 Battery
5.0 Connectors and Panels
5.1 Test Ports
5.2 Bantam Interface
5.3 BNC Interface
5.4 SFP Interface
5.5 SMA Interface
5.6 LEDs
6.0 Menus - Home
7.0 Setup
7.1 Signal Overview
7.2 PDH/DSn Transmitter
7.2.1 Hierarchy
7.2.2 Interface
7.2.3 Payload
7.2.4 Pattern
7.3 PDH/DSn Receiver
7.3.1 Hierarchy
7.3.2 Interface
7.3.3. Payload
7.3.4 Pattern
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7.4 SONET Transmitter
7.4.1 Hierarchy
7.4.2 Interface
7.4.3 Structure
7.4.4 Payload
7.4.5 Pattern
7.5 SONET Receiver
7.5.1 Hierarchy
7.5.2 Interface
7.5.3 Structure
7.5.4 Payload
7.5.5 Pattern
7.6 Measurement Configuration
7.6.1 Timer
7.6.2 ITU-T Performance Analysis
7.6.3 General
7.6.4 Auto Config
8.0 Results
8.1 PDH/DSn Results
8.1.1 Summary
8.1.2 Errors and Alarms
8.1.3 Event Log
8.1.4 Signal
8.1.5 Performance Analysis
8.1.6 Histograms
8.1.7 Graph
8.2 SONET Results
8.2.1 Summary
8.2.2 Errors and Alarms
8.2.3 Event Log
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8.2.4 Signal
8.2.5 Histograms
8.2.6 Graph
8.2.7 Performance Analysis
9.0 Alarms / Errors
9.1 Alarm Generation
9.2 Error Insertion
10.0 SONET Functions
10.1 Overhead Analyzer
10.2 Overhead Generator
10.3 Pointer Testing
10.4 Path Trace Identifiers
10.5 Payload Labels
10.6 APS Tasks
10.6.1 APS Testing
10.6.2 APS Sequence
10.7 Tandem Connection Monitoring (TCM)
10.8 Tributary Scan
10.9 Round Trip Delay
11.0 PDH Functions
11.1 E1 Pulse Mask measurement
11.2 E3 Pulse Mask measurement
11.3 E1 APS measurement
11.4 E1 Frame Words
11.5 Round Trip Delay
11.6 E1 Rx Data
12.0 DS1 Tools
12.1 DS1 Pulse Mask measurement
12.2 DS1 Loop
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12.3 Round Trip Delay
12.4 DS1 Rx Data
13.0 DS3 Tools
13.1 DS3 Pulse Mask measurement
13.2 DS3 FEAC
13.3 Round Trip Delay
14.0 Profiles
15.0 Common Functions
15.1 AutoTest
15.2 Settings
15.3 Files
15.4 Help
15.5 Backlight
15.6 Tools
16.0 Warranty and Software
17.0 About VeEX
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1.0 Introduction
Every effort was made to ensure that the information contained in this manual is accurate. However, information is subject to
change without notice. We accept no responsibility for any errors or omissions. In case of discrepancy, the web version takes
precedence over any printed literature.
(c) Copyright 2006-2010 VeEX Inc. All rights reserved. VeEX, VePAL are registered trademarks of VeEX Inc and/or its affiliates in
the the USA and certain other countries. All trademarks or registered trademarks are the property of their respective companies.
No part of this document may be reproduced or transmitted electronically or otherwise without written permission from VeEX Inc.
This device uses software either developed by VeEX Inc or licensed by VeEX Inc from third parties. The software is confidential
and proprietary of VeEX Inc. The software is protected by copyright and contains trade secrets of VeEX Inc or VeEX's licensors.
The purchaser of this device agrees that it has received a license solely to use the software as embedded in the device, and the
purchaser is prohibited from copying, reverse engineering, decompiling, or disassembling the software.
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2.0 About This Guide
The purpose of this guide is to help you successfully use the features and capabilities of the VeEX VePAL TX150.
This manual is intended for novice, intermediate, and experienced users. It is assumed that you have basic computer experience
and skills, and are familiar with basic PDH/DSn and SONET telecommunication concepts, terminology, and safety. For more
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technical resources, visit VeEX Inc web site at www.veexinc.com .
If you need assistance or have questions related to the use of this product, call or email our customer care department for
customer support. Before contacting our customer care department, you must have your serial number ready. Please go to Basic
Operations section for details on locating your unit serial number.
Customer Care:
Phone: + 1 408 970 9090
Email: [email protected]
Website: www.veexinc.com
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3.0 Safety Information
Safety precautions should be observed during all phases of operation of this instrument. The instrument has been designed to
ensure safe operation however please observe all safety markings and instructions. Do not operate the instrument in the
presence of flammable gases or fumes or any other combustible environment. VeEX Inc. assumes no liability for the customer's
failure to comply with safety precautions and requirements.
Optical Connectors
The TX150 displays a laser warning icon when the laser source is active to alert the user about a potentially dangerous situation.
It is recommended to;
1. Deactivate the laser before connecting or disconnecting optical cables or patchcords
2. Never to stare into an optical patchcord or the SFP’s connector interface while the laser is enabled. Even though SFP optical
transceivers are typically fitted with Class 1 lasers, which are considered eye safe, optical radiation for an extended period can
cause irreparable damage to the eyes.
3. Never use a fiber microscope to check the optical connectors when the laser source is active
Electrical Connectors
Telephone lines may carry dangerous voltages. Always connect the electrical test ports to known test interfaces which carry low
level signals
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4.0 Basic Operations
The unit is powered on and off from the red key on the keyboard area. In order to turn off the unit, press the Power key for at
least 2 seconds. If the unit is not responding, holding the Power key down by more than 10 seconds will force the unit to power
down.
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4.1 Keypad
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The keyboard includes the following keys:
Home key. Bring the unit to its home menu regardless of its location on the user interface.
Print key. Performs a print of the current result or selected stored result. The print function requires a USB printer. For a
list of supported printer please contact VeEX customer service.
Store key. Performs the storage in the memory of the test set of the current results. If the result is running, it will provide a
snap shot at the moment the key is pressed. The Store function provides automatic storage with automatic naming and
time stamping function. To manipulate a stored file, please go to Files.
History key. The History key resets any blinking LED due to a history condition. For more details on the LED, please go to
LEDs.
Help key. The Help key brings the user to the online help, regardless of the current user interface location of the unit.
Arrow key. The Arrow key moves the cursor in any of the four supported directions (left, right, up, down). The Arrow key
works in conjunction with the Enter and Escape keys.
Enter key. The Enter key provides an enter sequence to the user interface. It is used in non touch-screen operation mode
to enter menus and functions.
Escape key. The Escape key provides an escape sequence to the user interface. It is used in non touch-screen operation
mode to escape menus and functions.
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4.2 Touch-Screen Display
The LCD supports touch-screen operations. In order to use the unit in touch-screen mode, open the transparent door covering
the screen. Then take out the stylus available on the top door i.e. door protecting the connector panel. Keep the LCD cover
closed when using the unit on non touch-screen mode, and use the arrow, enter, and escape keys. The location of the cursor on
the screen is indicated by a focus state. The focus state varies depending on the function or section of the test set. Please
observe the following precautions;
- Never use excessive pressure on the touch-screen as this may damage its functionality
- Never use sharp objects such as a pen, screwdriver etc. as this may damage the surface
- Clean the surface of the touch-screen using a soft cloth and mild detergent only. Do not use alcohol.
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4.3 Battery
The VPAL is equipped with an intelligent Li-lon rechargeable battery pack which is located in the rear of the unit. The battery will
be partially charged upon delivery so it is recommended to charge the battery fully before use. It is recommended to charge the
battery at room temperature to preserve its life and to obtain maximum charge. The battery can be removed during operation
provided the unit is connected to the AC Main using the supplied AC adapter. Removing the battery when not connected to the
AC Main will cause the unit to shutdown. Remove the rubber cover on the left side to connect the AC Main adapter to the unit.
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5.0 Connectors and Panels
Connectors - The unit provides three connectivity ports on the right: 10/100 T port, USB 2.0 Client port, and USB 2.0 Master
port. To access the ports, remove the protective rubber cover on the right side.
The serial number of the unit is provided on the back of the chassis. Please provide this number when contacting VeEX
customer service.
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5.1 Test Ports – Electrical and Optical
The TX150 is equipped with the following physical test interfaces:
5.2 Bantam interface
- Balanced, Tx and Rx electrical interfaces for T1 and E1 signals. The port is 120 ohms for E1 signals and 100 ohms for T1
signals.
5.3 BNC interface
- Unbalanced, 75ohm Tx and Rx interfaces for DS3 and E1, E3 and STS-3 for Option.
5.4 SFP Transceiver interface
- Optical Transceivers (Tx/Rx) conforming to Multi Source Agreement (MSA) recommendations are supported. Various SFPs are
available for different wavelengths and dynamic range requirements. Check the ordering options for more details. The standard
optical connector type used on SFP transceivers is LC. Please use appropriate low reflectance patchcords (Ultra Physical Contact
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aka UPC) and note the damage level associated with each Transceiver. Customers opting to use or provide their own SFPs
should ensure that the transceivers are multi-rate and that digital diagnostics are supported – this enables the optical power and
other measurements when in SONET optical test mode. Furthermore, only SFPs with low jitter and good optical extinction ratio
should be used. To comply with ROHS and other local government requirements, only compliant SFP transceivers should be
used.
5.5 SMA Interface
- Unbalanced, NRZ electrical clock input at 1.544Mbit/s or 1,544MHz . When equipped with the E1 option, 2,048Mbit/s and
2,048MHz signals for Tx are also supported.
5.6 LEDs
The TX150 is equipped with four fixed LEDs for test applications and one LED for Power status.
The Power LED indicates the power state of the unit. The LED is off when the unit is powered off. The LED is green when the
unit is powered on. The LED is orange when the unit is connected to the AC Mains and powered off. The internal Lithium Ion (Li-
Ion) battery is charged automatically when the unit is connected to the AC power adapter. Prior to using the unit for the first time,
a full charge and discharge cycle is recommended to condition the battery. Full charge is reached after 6-7 hours of continuous
charging with the unit switched off.
The Signal LED indicates that a valid PDH/DSn or SONET signal is present at the test interface. The LED is green when
sufficient optical power or electrical level is available. The LED is red when a valid PDH/DSn or SONET signal is not detected.
The Frame LED indicates that a PDH/DSn or SONET signal with correct framing at all levels of the received signal is detected.
The LED is green when correct framing is detected and is red when no framing is detected.
The Pattern LED indicates detection of the expected test pattern. The LED is green when there is correct detection and it is
red when expected test pattern is not received.
The ALM/ERR LED is linked to the alarms and error functions and counters. The LED is solid red when there is an alarm or
error condition in the received signal. A red flashing LED indicates that an error or alarm has occurred but is no longer present -
This is called the history function. In order to reset the history condition on the Signal, Frame, Pattern or Alarm/Error LEDs, press
the function key on the rubber keyboard (O -> O).
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6.0 Menus - Home
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The Home Menu can be accessed at anytime by pressing the home key on the rubber keyboard.
The upper part of the menu contains items specific to the test application of the handheld test set.
The lower part of the menu contains items common to all VeEX VePAL100 handheld test sets including the LAN management
port on the side of the unit.
Some items are optional, and require the purchase of a software option in order to be activated. Some items have not been
released, and will become available in future software releases.
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7.0 Setup
To access the Setup application, tap on the Setup icon. This application allows the user to set up the Transmitter and Receiver
interfaces and associated test parameters prior to running a test.
The Setup page has three tabs for setting the SONET, DSn(T-Carrier) and PDH parameters. The Signal, Measurements and
Auto-Config tabs are described below.
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SDH Mode SONET Mode
SDH/SONET: To setup the SONET or SDH mode, first tab on the setup icon. In the Setup screen, tab the Measurements and
tab the General. This application allows the user to set up the SONET or SDH interfaces and associated test parameters prior to
running a test.
Result on start: The automatic move to results screen, tap the Results on start set to "ON" and it will move automatically to
the Results screen.
Auto Save: To automatic save results file, tab the Auto save set to "ON" will automatically saved the results file.
7.1 Signal Overview
The Transmitter and Receiver configurations are grouped into a simple yet intuitive block diagram. The Tx and Rx signal
parameters can be modified by tapping the applicable block which brings up a new dialog window displaying additional input and
specific selection settings. The transmitter transmits as soon as a valid configuration is entered. The receiver will check for a valid
signal on its input so the measurement function is synchronized. When a test is not running, the LEDs will still indicate errors and
alarms but any other results displayed will be the results of a previous test.
When the Tx and Rx signal structures are required to be identical or symmetrical, coupling the Transmitter and Receiver is
possible. The signal structure can be copied from Tx to the Rx, or vice versa.
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Changes to the Setup are applied immediately unless an invalid parameter has been selected.
When the Tx and Rx signal structures need to be independent or asymmetrical, uncoupling the transmitter and receiver is
possible. For example the Tx can be sending a PRBS of 2^ 23 -1 in a VT-1.5 carried within an optical OC-48, while the Rx can
be expecting to receive a PRBS of 2^23-1 in a 1.5 Mbit/s DS1 signal.
Hierarchy - Allows the user to configure SONET, PDH/DSn(T-Carrier) signal and network types, including the bit rate and
higher order mapping if applicable.
Interface - Allows the user to select optical or electrical test ports. Optical test ports apply to SONET signal types only, while
electrical ports can apply to STS-3 or PDH/DSn signals. Clock source and offset options are also configured in this screen.
Structure - Applies to SONET signals only and allows the user to configure lower order mapping and the channel number
Payload – Applies to both SONET and PDH/DSn signals and allows the user to configure low rate signal (if applicable) and
associated framing.
Pattern - Applies to both SONET and PDH/DSn signals and allows the user to configure the test pattern to be used. Pseudo
Random Bit Sequences (PRBS) defined by ITU-T, fixed words and 24 bit user defined patterns are available. Pattern logic or
inversion is also possible.
Warning message
While a test is running, it is possible to view the signal configuration but it is not possible to change the setup or modify other
measurements settings on the fly. This warning screen is only shown during initial setup to alert the user.
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7.2 PDH/DSn Transmitter Setup
7.2.1 Tx Setup > Hierarchy
Tapping the Hierarchy box opens the Tx Hierarchy Setup screen. The screen examples shown in this part of the manual depict
and describe the settings for 1.5M or DS1 signals. The options for other bit rates and modes are described in text format.
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Network Type : Select PDH/DSn as the network type.
High Rate : Options are 1.5Mbit/s (DS1), 2Mbit/s (E1) and 34Mbit/s (E3), 45Mbit/s (DS3).
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7.2.2 Tx Setup > Interface
Tapping the Interface box opens the Tx Interface Setup screen shown below.
TEST PORT : In PDH/DSn mode, only the electrical interface selection is possible
LINE CODE :
- In DS1 mode, the line code options default to B8ZS or AMI
- In DS3 mode, the line code is B3ZS or AMI
- In E1 mode, the line code options default to HDB3 or AMI. Normal E1 systems use HDB3 line coding while AMI is reserved for
special applications.
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- In E3 mode, the line code is HDB3 or AMI
CLOCK SOURCE : Configurable as follows:
- Internal clock: The clock for the transmitter is derived from the internal clock. The internal clock has an accuracy of +/-
3.5ppm conforming to G.812 recommendations.
- External clock: The clock for the transmitter is derived from a 1.5Mbit/s signal or 1.5MHz BITS clock present on the SMA
connector
- From Rx : The clock for the transmitter is derived from the received signal and the jitter of the incoming signal is suppressed.
- Offset : The clock for the transmitter is derived from internal clock generator. It can change the offset while measurements are
running. use numeric key to increase and decrease the frequency shift, up to 0.01 ppm. Frequency offset: ± 50 ppm with 1, 0.1,
0.01 ppm resolution
BALANCED: Check when using the Bantam connectors. The transmitter output impedance will be set to 100ohms. The Primary
test port is "1" on top panel. If unchecked, the unit will assume that testing is taking place on the 75 ohm unbalanced BNC Tx
connector for E1 mode.
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7.2.3 Tx Setup > Payload
Tapping the Payload box opens the Tx Payload Setup screen.
RATE:
In DS1 (1.544Mbit/s) mode, the options are 1.544M or Fractional DS1(Nx64 or Nx56) where:
- 1.544 M: Configures the transmitter for full rate testing at 1.544Mbit/s
- Fractional DS1 (Nx64 or Nx56): Configures the transmitter for fractional testing using N or M 64kbit/s or 56kbit/s timeslots.
(Contiguous or non-Contiguous timeslots).
In DS3 (45 Mbit/s) mode, the option are 45M or 1.544M Mux (DS3/DS1 Mux) or Fractional DS1Mux where:
- 45 M: Configures the transmitter for full rate testing at 45Mbit/s
- 1.544 M (DS3/DS1 Mux): Configures the transmitter for full rate testing at 45Mbit/s signal with DS1 payloads (1 to 28 channels)
- Fractional DS1 Mux: Configures the transmitter for full rate testing at 45Mbit/s signal with DS1 payloads (1 to 28 channels) for
fractional testing using N or M64kbit/s or 56kbit/s timeslots. (Contiguous or non-Contiguous timeslots).
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In 2M mode, the options are 2M or Fractional E1 (N x64) where:
- 2M: Configures the transmitter for full rate testing at 2,048Mbit/s
- Fractional E1 (N x64) : Configures the transmitter for fractional testing using N or M 64kbit/s timeslots. (Contiguous or non-
Contiguous timeslots).
In E3 (34 Mbit/s) mode, the option are 34M or 2M Mux (E3//E1 Mux) or Fractional E1 (Nx64) Mux where:
- 34 M: Configures the transmitter for full rate testing at 34Mbit/s
- 2 M (E3/E1 Mux): Configures the transmitter for full rate testing at 34Mbit/s signal with E1 payloads (1 to 16 channels)
- Fractional E1 (E3/E1Mux w/Nx64 ): Configures the transmitter for full rate testing at 34Mbit/s signal with E1 payloads (1 to 16
channels) for fractional testing using N or M 64kbit/s timeslots. (Contiguous or non-Contiguous timeslots).
FRAMING:
In DS1 mode, the options are unframed, D4 (SF) and ANSI T1.107 (ESF)
In DS3 mode, the options are unframed, M13 and C-Parity
In E1 mode, the options are unframed, PCM31, PCM31C, PCM30, and PCM30C. Framing conforms to G.704 and G.706
recommendations and are briefly described below;
In E3 mode, the options are unframed, framed G.751.
When the Nx64 fractional rate is selected, the following screen is displayed:
FRAMING: Options are D4 (SF) and ESF ANSI T1.107 recommendations same as DS1 described above.
Note: Unframed signal types are not supported in the N x 64 fractional mode, because framing is required to determine the
location of timeslots.
TIMESLOT SELECTION : Select the timeslot by tapping the applicable box. Deselect the timeslot by tapping the box again.
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7.2.4 TX Setup > Pattern
Tapping the Pattern box opens the Tx Pattern Setup screen shown below. The test patterns can be applied to all PDH/DSn and
SONET rates however ITU-T recommends certain sequences dependent on the bit rate under test.
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PATTERN: Use the pattern drop down box to select the test pattern which will be inserted into the transmitted signal. Pseudo
Random Bit Sequences (PRBS) defined by ITU-T 0.150 and 0.151 standards, fixed words and 24-bit user defined patterns are
available.
INVERT: Inversion of PRBS polarity is also available. Inversion of fixed words is not permitted.
Note: ITU-T specification 0.150 recommends for the following test patterns:
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7.3 DSn/PDH Receiver
7.3.1 Rx Setup > Hierarchy
Tapping the Hierarchy box opens the Rx Hierarchy Setup screen.
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Network Type : Select PDH/DSn as the network type.
High Rate : Options are 1.5Mbit/s, 2Mbit/s, 34Mbit/s and 45Mbit/s.
Dual : Dual DS1or E1 Receiver Option ON/OFF ; the Receiver 2 set exact same configuration as Receiver 1.
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7.3.2 Rx Setup > Interface
Tapping the Interface box opens the Rx Interface Setup screen shown below.
TEST PORT : If a PDH/DSn structure has been selected in the Hierarchy setup, the optical options will be disabled under the
test port menu.
TERMINATION: The sensitivity of the receiver can be set for ITU-T and ANSI, Protected Monitoring Points (PMP) or High
Impedance connections. The options under the termination menu are as follows:
- Terminated: The received signal is terminated with a 75 ohm or 100 ohm (120ohm in E1) impedance enabling the unit to
decode the signal over a wide range of cable losses.
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- Monitor: To be used when the measurement is made at a Protected Monitoring Point (PMP) of network equipment. The PMP
level can range between -20 and -26dB.
- Bridge: Available on in DS1 or E1 mode. Select this mode for a high impedance monitor test or when the receiver is
connected directly in parallel to an DS1 or E1 line carrying live traffic. The isolation circuit of the unit protects the DS1 or E1
signal from any possible disruption.
LINE CODE: The line code for testing at the various Rx bit rates is the same for the Tx described previously. The termination
settings in this Rx setup, however, have no effect on the Tx.
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7.3.3 Rx Setup > Payload
Tapping the Payload box opens the Rx Payload Setup screen.
RATE: Same options as Transmitter described previously.
FRAMING: Same options as Transmitter described previously
When the Nx64 fractional rate is selected, the following screen is displayed;
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Framing: Same options as Transmitter described previously
Note: Unframed signal types are not supported in this mode, because framing is required to determine the location of timeslots.
Timeslot Selection : Same options as Transmitter described previously
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7.3.4 Rx Setup > Pattern
Tapping the Pattern box opens the Rx Pattern Setup screen shown below.
OUT OF SERVICE: Should be selected if the incoming signal is expected to contain a known test pattern. Deselect this option
if signal is expected to contain live network traffic – this will disable the pattern detection process and will enable the reporting of
LSS.
PATTERN: Same options as Transmitter described previously
INVERT: Same options as Transmitter described previously
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7.4 SONET Transmitter Setup
This section of the manual describes the SONET configuration capabilities. The block diagram of the Tx and Rx structure has
been described in the preceding section.
7.4.1 TX Setup > Hierarchy
Tapping the Hierarchy box opens the Tx Hierarchy Setup screen.
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NETWORK TYPE : In the SONET mode, only optical interface options are available.
TEST RATE: Options are OC-3, OC-12, OC-48 (referring to 155M, 622M and 2.5G respectively).
MAPPING: STS mappings per Bellcore GR-253 and ANSI T1.105 recommendations are supported. The multiplexing
structure is shown below.
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