DSAM_Field_View__QAM_Quick_Guide_EN.PDF

Rev. 001 DSAM Field View QAM Guide i
Reference WEBSITE: www.jdsu.com/test
Notice Every effort was made to ensure that the information in this document
was accurate at the time of printing. However, information is subject to
change without notice, and JDSU reserves the right to update this
document with information not available at the time that this document
was created.
Copyright © Copyright 2012 JDS Uniphase Corporation (JDSU). All rights
Reserved.
JDSU, Enabling Broadband and Optical Innovation, Test and
Measurement Solutions, and JDSU logos are trademarks of JDS
Uniphase Corporation ("JDS Uniphase"). All other trademarks and
registered trademarks are the property of their respective owners. No
part of this guide may be reproduced or transmitted electronically or
otherwise without written permission of the publisher.
Trademarks JDSU and Field View QAM™ are trademarks or registered trademarks
of JDSU in the United States and/or other countries.
Microsoft, Windows, Windows CE, Windows NT, and Microsoft
Internet Explorer are either trademarks or registered trademarks of
Microsoft Corporation in the United States and/or other countries.
Specifications, terms, and conditions are subject to change without
notice. All trademarks and registered trademarks are the property of
their respective companies.
WEEE Directive
Compliance
JDSU has established processes in compliance with the Waste Elec-
trical and Electronic Equipment (WEEE) Directive, 2002/96/EC.
This product should not be disposed of as unsorted municipal waste
and should be collected separately and disposed of according to your
national regulations. In the European Union, all equipment purchased
from JDSU after 2005-08-13 can be returned for disposal at the end of
its useful life. JDSU will ensure that all waste equipment returned is
reused, recycled, or disposed of in an environmentally friendly
manner, and in compliance with all applicable national and interna-
tional waste legislation.

ii DSAM Field View QAM Guide Rev. 001
It is the responsibility of the equipment owner to return the equipment
to JDSU for appropriate disposal. If the equipment was imported by a
reseller whose name or logo is marked on the equipment, then the
owner should return the equipment directly to the reseller.
Instructions for returning waste equipment to JDSU can be found in
the Environmental section of JDSU’s web site at www.jdsu.com. If you
have questions concerning disposal of your equipment, contact
JDSU’s WEEE Program Management team at
WEEE.EMEA@jdsu.com.

Rev. 001 DSAM Field View QAM Guide iii
Table of Contents
Field View QAM™ Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Field View QAM™ - Troubleshooting with Field View QAM™ . . 2
DSAM Field View QAM™- Example of Detected Problems . . . . . 8

Table of Contents
iv DSAM Field View QAM Guide Rev. 000

DSAM Field View QAM Guide
Field View QAM™ Overview
Rev. 001 DSAM Field View QAM Guide 1
Field View QAM™ Overview
Locate and Repair hard-to-find impairments on the Return Path. Tradi-
tional spectrum analysis tools can show a clean spectrum, indicating
pristine return path, while the CMTS and other reporting tools give
overall node health a low health score. With Field View QAM™ micro-
reflections, in-band frequency response and group delay issues that
are undetectable when viewing only the spectrum can be quickly iden-
tified.
A DSAMXT with Field View QAM™ can display an impairment dash-
board with key measurements displayed in green and red providing a
quick go/no-go indicator to technicians, confirming whether issues
causing codeword errors such as microreflections and impulse noise
have been fixed.
3
9
Figure 1 ImpairmentsInvisiblewithSpectrumAnalysis
Figure 2 Same Impairments Visible with Field View QAM

Field View QAM™ - Troubleshooting with Field View QAM™
2 DSAM Field View QAM Guide Rev. 001
1 Press the Measure hard key on the DSAM keypad.
2 Press the Service softkey
3 Got to Field View QAM™
4 Enter
5 If you have multiple DOCSIS Channels available to test you will be
asked to select a DOCSIS Channel
6 Select a DOCSIS channel that you want to troubleshoot
7 Press Next>
Figure 3
Figure 4

8 Press Start>
9 Select a PathTrak WebView Server
10 Ok
11 Select an HCU
12 Ok
13 Select a Node
14 Ok
15 Select an upstream
16 Ok
Figure 5
Figure 6

Figure 7
Figure 8 Initial FVQ Screen

17 Select Carrier Level
18 Enter
19 Press the Back softkey
20 Using the down arrow key, select In-Band Response
21 Go Back
Figure 9 Carrier Level
Figure 10 In-Band Response

22 Select Ingress Under Carrier
23 Back
24 Using the arrow keys, select Micro-reflection
25 Back
Figure 11 Ingress Under Carrier
Figure 12 Micro-reflection

26 Select Group Delay
27 Back
28 Select Impulse Noise
Figure 13 Group Delay
Figure 14 Impulse Noise

DSAM Field View QAM™- Example of Detected Problems
Figure 15 Bad Packets
Figure 16 Bad Packets (In-Band Response)
Figure 17 Bad In-Band Response

Figure 18 Bad Group Delay

Test and Measurement Regional Sales
North America
Toll Free: 1 800 638 2049
Tel: +1 240 404 2999
Fax:+1 240 404 2195
Latin America
Tel: 954-688-5660
Fax:954-846-8856
Asia Pacific
Tel: +852 2892 0990
Fax:+852 2892 0770
EMEA
Tel: +49 7121 86 2222
Fax:+49 7121 86 1222
www.jdsu.com
DSAM Field View QAM™ December 2012

DSAM_Field_View__QAM_Quick_Guide_EN.PDF

Recommended

Recommended

More Related Content

Similar to DSAM_Field_View__QAM_Quick_Guide_EN.PDF

Similar to DSAM_Field_View__QAM_Quick_Guide_EN.PDF (20)

DSAM_Field_View__QAM_Quick_Guide_EN.PDF