Deviser DS2831 User manual

DS2831
Digital TV Spectrum Analyzer
User Guide

DS2831 Digital TV Spectrum Analyzer
2
Table of ontents
PART I: DS2831 BASICS 6
Safety Precautions 7
Maintenance and Safety Considerations 8
arranty 10
Chapter 1: General Information 11
1-1 About the DS2831 Digital TV Spectrum Analyzer 11
1-2 Accessories and Measurement Options 12
1-3 Technical Support & Service 13
1-4 Annual Service Verification 13
1-5 Electrostatic Discharge Caution 13
1-6 Battery Care 14
Glossary of Acronyms 16
Chapter 2: Instrument Overview 18
2-1 Unpacking the DS2831 Instrument 18
2-2 Powering On the DS2831 18
2-3 Front Panel Overview 19
2-4 Top Panel Overview 20
2-5 Control Overview 21
2-6 Measurement Main Menu 22
2-7 Measurement Mode Selection 24
2-8 About the Soft Carrying Case 24
Chapter 3: Quick Start Guide (Making a Measurement) 25
PART II: SETTINGS AND MEASUREMENTS 34
Chapter 4: Channel Plans 35
4-1 Creating a User Channel Plan 35
4-2 Editing Channel Plans 37
4-3 Importing and Exporting Channel Plans 39
Chapter 5: Analog TV 40
5-1 Channel Measurement 40
5-2 Analog FM 41
5-3 FM Demodulation 41
5-4 HUM Modulation 42
5-5 Channel Scan 43
5-6 Mini-Scan 44
5-7 Downstream Passive Sweep 45
5-8 Tilt Measurement 48

DS2831 Digital TV
Spectrum Analyzer
3
Chapter 6: Analog Non-Linear Distortion Measurement 49
6-1 Carrier-to-Composite Noise Ratio 49
6-2 CTB / CSO 51
Chapter 7: Analog TV Video 52
7-1 Depth of Modulation (DOM) 52
7-2 In-Channel Frequency Response 53
7-3 Differential Gain and Differential Phase 55
7-4 Chrominance to Luminance Delay Inequality 56
Chapter 8: Digital Signal Measurement 57
8-1 DVB-C Measurement 58
8-2 OFDM 58
8-3 Digital HUM 59
8-4 Constellation Diagram 60
8-5 MER & BER Statistics Graph 61
8-6 Error Vector Spectrum (EVS) Function 62
8-7 Adaptive Equalizer, Frequency Response, and Group Delay 63
Chapter 9: Transport Stream Analysis 66
9-1 Transport Stream Real-time Analysis 67
9-2 Basic Information 68
9-3 TR 101 290 Priority 1, 2 and 3 Tests 69
9-4 PID Viewer 72
9-5 PCR Analysis 73
9-6 Program List 73
9-7 PSI/SI Table Analysis 74
9-8 PSI/PSIP Table Analysis 76
9-9 Data Capture 78
Chapter 10: Downstream Spectrum Analysis 81
10-1 Frequency Settings 82
10-2 Amplitude Settings 82
10-3 RB & VB Bandwidth/Sweep Setting 84
10-4 Markers 85
10-5 Trace Setting 86
10-6 Detector Type Setting 87
10-7 Display Mode Setting 87
A Note on Upstream Spectrum Analysis 89
Chapter 11: Persistence Analysis 90
11-1 Introduction to Persistence Theory 90
11-2 Introduction to Persistence Technology 90
11-3 Introduction to Persistence Application 91
11-4 Persistence Recording 91
Chapter 12: Reverse Path Sweep 95
12-1 System Architecture 95
12-2 Operation Principle 95
12-3 Measurement Setup 96
12-4 Bidirectional Test System Parameters and Range Setup 103
12-5 System Connection 104
12-6 Troubleshooting 104

DS2831 Digital TV Spectrum Analyzer
4
Chapter 13: Upstream Signal Generator 105
13-1 Basic Operation 105
13-2 Sweep Function 106
Chapter 14: Loopback Test 107
Chapter 15: DOCSIS 3.1 Cable Modem Test 108
15-1 Basic Operation 108
15-2 Cable Modem Tools 110
Chapter 16: Throughput Testing 114
Chapter 17: PPPoE 116
Chapter 18: PING 117
Chapter 19: Traceroute 118
Chapter 20: FTP 119
Chapter 21: Browser 120
Chapter 22: iFi Analysis 121
Chapter 23: DOCSIS 3.1 OFDM DS Channel Test 122
23-1 OFDM Integrated Channel Test 123
23-2 OFDM In-Band Frequency Response 125
23-3 OFDM Spectrum Measurement 126
Chapter 24: Optical Fiber Applications 127
24-1 Introduction to Fiber Connectors 127
24-2 Optical Power Meter 129
24-3 VFL (Visual Fault Location) 130
24-4 Fiber Scope 131
PART III: BACKGROUND AND CONCEPTS 132
Chapter 25: Analog TV Standards & Color Systems 133
Chapter 26: Analog TV Baseband Signals 136
26-1 Understanding Composite Video Signal 136
26-2 Principles of Interlaced Scanning 138
26-3 Principles of Gated Measurements 139
Chapter 27: Resolution and Video Bandwidth 145
27-1 Resolution Bandwidth filter (RB ) 145
27-2 Video Bandwidth filter (VB ) 145

DS2831 Digital TV
Spectrum Analyzer
5
Chapter 28: Detector Mode 146
Chapter 29: International CATV Standards 147
Application Note: A Study of Digital Persistence Analysis 155
PART IV: SYSTEM FUNCTIONS 159
Chapter 30: System Settings 160
30-1 About (System Information) 160
30-2 General Settings 161
30-3 Measure Settings 165
Chapter 31: File Management 168
31-1 File Operations 168
31-2 Importing and Exporting Data 170
Chapter 32: Saving Data 171
32-1 Screenshots 171
32-2 Measurement Data 171
Chapter 33: Auto Test 172
33-1 Creating a Project 172
33-2 Managing Projects 173
33-3 ork Orders 174
SPECIFICATIONS 175

Part I: DS2831 Basics
6
Part I
DS2831 Basics

Part I: DS2831 Basics
7
Safety Precautions
The following are general safety precautions that are not necessarily related to any specific part or
procedure, and do not necessarily appear elsewhere in this publication. These precautions must be
thoroughly understood, and they apply to all phases of operation and maintenance. Deviser Instruments,
Inc. assumes no liability for the operator’s failure to comply with these precautions.
WARNING
Plug Compatibility
Before connecting to A power, please insure the adaptor plug fits the wall configuration on
one end, and the power supply plug configuration on the other end. Incorrect configuration
may damage the power supply.
WARNING
Shock Hazard
To avoid the possibility of severe injury or death, observe the following precautions when
using the DS2831 Digital TV Spectrum Analyzer:
• Do not remove the system covers, and do not perform electrical tests if there are
signs of shipping damage to the outer enclosure.
• When connecting test cables to a line, do not touch the cable’s metal contact
points, or allow the cable leads to touch each other.
• Use only the supplied power cords and connect only to a properly grounded wall
outlet. Do not use extension cords that do not have a protective ground conductor.
WARNING
Explosion Hazard
Do not operate the instrument in the presence of flammable gases or fumes.
WARNING
Do Not Use I Damaged
Do not use this product if it shows visible damage, fails to perform, has been stored in
unfavorable conditions, or has been subject to severe transportation stresses. Secure the
product against any unintended operation and contact a Deviser Instruments, Inc. Factory
Authorized Service enter for assistance.
WARNING
Remove Power
Observe general safety precautions. Do not open the instrument with the power on.
WARNING
Battery Care
Danger of explosion if the battery is incorrectly replaced. It is recommended to replace the
battery only with the same type. Do not dispose of batteries in fire or trash. Batteries must be
recycled or disposed of properly.

Part I: DS2831 Basics
8
Maintenance and Safety onsiderations
alibrating the Meter
Any instrument with analog circuitry (including preamplifiers, filters, etc.) may change in performance over
time. Regular calibration will keep your instrument in optimal working condition to support your test, design,
troubleshooting, and manufacturing needs.
It is recommended to calibrate and verify the instrument at least once per year to ensure that it meets the
stated performance specifications.
To avoid damaging the default calibration data stored in device memory, instrument calibration should
only be performed with appropriate equipment by qualified personnel at a Deviser Instruments, Factory-
Authorized Service enter.
Environmental conditions:
alibration and verification tests should be performed in a laboratory where the ambient temperature and
relative humidity can be controlled.
Warm up:
Allow up to at least 5 minutes’ warm- up before calibrating the instrument. If the unit has been exposed to
or stored in a high-humidity (condensing) environment, allow more time.
For detailed information on calibration procedures, please contact an authorized Deviser distributor.
Other Safety and Maintenance Tips
Please charge and discharge the battery every 3 months to extend battery life. Recharge the battery only
in the instrument; If left unused, a fully charged battery will discharge itself over time.
Never use a damaged or worn-out adapter or battery. During charge, the unit may be warm to the touch
even if it is powered off. To avoid overheating, always disconnect the unit from the A adapter before
storing it in the carrying case.
CAUTION: Extreme temperatures will affect the ability of the battery to charge. Allow the battery to return
to room temperature before use or charging. Storing a battery in extreme hot or cold temperatures will
reduce its capacity and lifetime. It is recommended to store batteries at temperatures less than 25° .
The unit cannot be used in its carrying case for more than 1 hour if the ambient temperature exceeds 35° .
CAUTION : Use only the original A -D adapter and battery to power the unit. To charge, simply insert the
battery into the unit’s back panel, plug in the A -D adapter, and switch the power on if necessary. If the
LED is red, the battery is charging. When fully charged, the LED will turn green. Time required to fully charge
a depleted battery is approximately four hours, but may be longer if the instrument is in use while charging.
CAUTION : While updating firmware, the unit must remain connected to power and at more than 60%
battery power. If power fails during the updating process, instrument function may be affected.
DANGER : The DS2831 contains an optional VFL (Visual Fault Locator). To avoid eye damage, never look
directly into the VFL output port while the light is on, and wear appropriate eye protection when necessary.

Part I: DS2831 Basics
9
Safety Symbols
The ollowing are general de initions o sa ety symbols used on equipment and in manuals.
Dangerous voltage.
Protective ground.
Frame or chassis ground.
Alternating current.
Direct current.
Alternating or direct current.
aution! Read the manual.
Statement of F ompliance
This device complies with Part 15 of the F Rules. Operation is subject to the following two conditions: (1)
this device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
NOTE:
This equipment has been tested and found to comply with the limits for a lass A digital device, pursuant to
Part 15 of the F Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
In some situations, operation of this equipment in a residential area may cause harmful interference, in
which case the user will be required to correct the interference at his or her own expense.

Part I: DS2831 Basics
10
Warranty
This Deviser Instruments, Inc. product is warrantied against defects in material and workmanship for a period
of 36 months from the date of shipment. Under warranty, Deviser Instruments, Inc. will, at its option, either
repair or replace products which prove to be defective.
Extended warranty options are available . Please contact your local Deviser Instruments sales representative
for more information.
For warranty service or repair, this product must be returned to a Deviser Instruments Factory Authorized
Service enter designated. The buyer shall prepay shipping charges to Deviser Instruments Inc. or to the
service center and Deviser Instruments Inc. or the service center shall pay the shipping charges to return the
product to the buyer. However, for products returned to Deviser Instruments Inc. or one of its authorized
service centers outside the warranty period, the buyer is responsible for all shipping charges, duties, and
taxes, both ways.
Deviser Instruments Inc. warrants that software and firmware designated by Deviser Instruments Inc. for use
with an instrument will execute its programming instructions when properly installed on that instrument.
Deviser Instruments Inc. does not warrant that the operation of the instrument or its software or firmware will
be uninterrupted or error-free.
Limitation of Warranty
Unauthorized repair or update, physical damage or improper operational voltage (at the power supply or
RF input) will void this warranty. The main lithium battery is covered for a period of 12 months.
The foregoing warranty shall not apply to defects resulting from the following:
• Improper or inadequate use or maintenance by Buyer
• Buyer-supplied software or interfacing
• Unauthorized modification or misuse
• Operation outside of the environmental specifications for the product.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. DEVISER INSTRUMENTS IN SPE IFI ALLY DIS LAIMS THE
IMPLIED WARRANTIES OF MER HANTABILITY AND FITNESS FOR A PARTI ULAR PURPOSE.
Updates, if any, may be downloaded from the Deviser web site at http://www.deviserinstruments.com/.

Part I: DS2831 Basics
11
hapter 1: General Information
The DS2831 is a Digital TV spectrum analyzer that integrates multiple measurement applications in a single
instrument, ideal for use by ATV field technicians and HE engineers.
The firmware installed on the DS2831 is updated on a regular basis. This User Guide describes procedures for
operating the instrument, based on the most recent firmware version up to the date listed on the guide.
1-1 About the DS2831 Digital TV Spectrum Analyzer
With the latest in RF test and measurement technology, this DS2831 spectrum analyzer includes a host of
features typically found in more expensive instruments and provides outstanding performance for value.
The RF front end of this true spectrum analyzer offers a dynamic range of 80dB @ 30kHz RBW.
The state-of-the-art cable modem supports DO SIS 3.1 measurements; in addition to standard S QAM
capabilities (32 downstream carriers, 8 upstream carriers), the DS2831 now offers OFDM demodulation for
downstream channels up to 192 MHz wide and upstream channels either 48 or 96 MHz wide.
The DS2831 adds a capacitive L D touchscreen and a host of crucial functions, enabling field engineers to
perform in-service measurements and identify interference signals that are invisible to many field analyzers
currently available on the RF test equipment market. Spectrum & QAM analyses are shown simultaneously,
allowing the user to verify analog / digital characteristics of the same carrier at the same time. With the
upstream spectrum analysis tool, users can perform persistence tests (up to a span of 206MHz) to find
intermittent impairments that traditional spectrum analyzers fail to see.
Gated /N, SO, and TB measurements, triggering on VITS test signals, allow for non-interfering in-service
basic ATV channel tests. By using the appropriate VITS test signal on a specific video line, the DS2831 can
also perform video parameter measurements such as differential gain/phase – which the F requires to
be tested every 3 years. With the advent of LTE interference ingress signals, the DS2831’s EVS (Error Vector
Spectrum) Frequency or Time function enables non-interfering tests “under the QAM signal”.
As another example of the DS2831’s exceptional versatility, it also supports MPEG TS (transport stream)
analysis. This function provides the MPEG program information and channel frequency list – so that, when
attempting to troubleshoot, a field engineer can easily identify the QAM carrier of interest based on the
particular program complaint from the customer. When used in conjunction with the DS1610 broadband
network monitoring system, the instrument can also capture a sweep response trace of the upstream path.
The DS2831 is supported by the cloud-based Deviser EDGE platform for asset & data management.
Each instrument comes with Measurement, onstellation, Spectrum, Tilt, Scan, and Mini-Scan downstream
functions, and able Modem, Spectrum, Ping, FTP, Traceroute, PPPoE, and Browser modes. Optional tools
may be enabled either at the time of purchase, or at a later date as your test needs evolve.
•
I
n
-
service /N, SO, and TB gated
testing
•
Data management
app, Deviser EDGE
•
Supports optical fiber tools,
such as
power
meter, fault locator, & inspection probe
•
EVS: in
-
service interference location
under a QAM carrier (e.g. LTE)
•
Analog TV
video gated measurement
•
TR 101 290 monitoring
•
Upstream spectrum persistence analysis
•
Reverse path sweep
•
Wi
-
Fi measurements
•
Analog ATV measurement suite
•
Upstream signal generator (up to QAM256)
•
32x8 cable modem with OFDM

Part I: DS2831 Basics
12
1-2 Accessories and Measurement Options
The following components and options are available with your DS2831 Digital TV Spectrum Analyzer.
Model No. Description Order No.
DS2831-002 DS2831 Digital TV Spectrum Analyzer 0110.2800.02
SFL10-KK TOKO F-F onnector 6190.0500.01
DS2831-003 D (Toolbox Software and Operation Manual) 6190.0600.70
DS2831-004 Quick Start Guide 6190.0600.71
FSP060-DBAE1 A /D Adapter 6290.0700.01
DS2831-008 Soft arrying ase 6110.0600.14
DS2831-010 arabiner Red Deviser Logo 6110.0600.17
DS2831-011 arabiner Blue Deviser Logo 6110.0600.18
DS2831-012 Plated Key Ring 6110.0600.19
DS2831-013 DS2831 Inspection ertificate 6110.0600.32
DS2831-700 Extended Spectrum (1220 ~2150 MHz) 2110.2800.27
DS2831-800 DPS (Digital Persistence Spectrum) 2110.2800.28
DS2831-801 /N, SO, TB Gated Measurement 2110.2800.29
DS2831-802 Analog Video Parameters Measurement (DG/DP, LDI, I R, DOM) 2110.2800.30
DS2831-803 EVS (Error Vector Spectrum) 2110.2800.31
DS2831-804 TS Analysis 2110.2800.32
DS2831-805 WiFi Analysis 2110.2800.33
DS2831-806 Reverse Path Sweep 2110.2800.34
DS2831-212 DS2831 FSK Unit 2110.2800.06
DS2831-807 Upstream Signal Generator with FE 2110.2800.35
DA-20360 Built-in DO SIS 3.0 8×4 able Modem 5110.0000.13
DS2831-809 DO SIS 3.1 able Modem (32x8) 2110.2800.38
DS2831-811 Passive Sweep 2110.2800.01
OPM Optical Power Meter and VFL Module 2130.7000.29
DS2831-204 Visual Fault Locator 2110.2800.02
DS2831-210 Optical Power Measurement (OPM) 2110.2800.03
DI-1000 Fiber Microscope DI-1000 LighTel 6250.0900.11
DS2831-211 GPS 2110.2800.04
DS2831-005 DS2831 operation manual hard copy 6190.0600.75
AE4000-733 Power ord Plug Type (EU) 6290.0500.03
AE4000-734 Power ord Plug Type (US) 6290.0500.04
AE4000-735 Power ord Plug Type (UK) 6290.0500.05
AE4000-736 Power ord Plug Type (Australia) 6290.0500.06

Part I: DS2831 Basics
13
1-3 Technical Support & Service
Deviser Instruments Inc. offers a 3-year standard warranty, and ongoing support and training services.
ustomers are eligible to receive initial on-site training from our technical support engineers in a “train the
trainer” format. Our application engineers can also answer questions and provide ongoing technical
support regarding software or equipment.
For special applications, Deviser instruments offers custom software design at an extremely competitive rate
and time-to-market.
Ongoing development and “maintenance engineering” is provided on all products; yearly maintenance
programs are offered to ensure that customers fully benefit from the latest upgrades available. Technical
documents and application guides are released on an ongoing basis.
1-4 Annual Service Verification
Accurate test measurements are critical to your business. Deviser Instruments recommends an annual
calibration and performance verification as a means to keep your instrument in optimal working condition.
Please contact Deviser Instruments for an RMA number and the location of the nearest Authorized Deviser
Instruments service center. Our authorized service centers are skilled and certified in the calibration, service,
repair, and performance verification of our products.
1-5 Electrostatic Discharge aution
The DS2831 Digital TV Spectrum Analyzer, like other high-performance instruments, is susceptible to
electrostatic discharge (ESD) damage. oaxial cables and antennas often build up a static charge, which
may damage the DS2831 input circuitry. DS2831 operators must be aware of the potential for ESD damage
and take all necessary precautions.
It is recommended to discharge the static by connecting a short or load device to the cable or antenna
before connecting them to the DS2831. It is important to remember that the operator may also carry a
static charge that can cause damage. Following the practices outlined in the above standards will ensure
a safe environment for both personnel and equipment.
• When connecting a coaxial cable to the instrument for the first time that day, the center conductor
of the cable and the outer braided shielding layer should be quickly grounded.
• During service, ensure that the technician is grounded before removing inner components or pulling
out connecting cables.
• Ensure that the instrument is well grounded, so as not to store any static charges.
• Electrostatic protection of this instrument is up to standards of 6KV contact and 8KV air-gap.

Part I: DS2831 Basics
14
1-6 Battery are
The DS2831 can be supplied with power in two different ways: with a battery or with the power adapter
provided.
1-6.1 Battery
The DS2831 uses a 7.4V/10Ah lithium battery for autonomous operation. Battery life during continuous use
(on a full charge) is estimated at more than 8 hours. When the voltage falls below 7.15V, the instrument will
display an alert indicating low charge. At 6.8V or less, it will display a second alert and the battery icon will
flicker. At 6.5V or less, following a third alert, the instrument will emit a long audible beep and shut down
automatically. Further use requires that the unit be connected to an external A or D power source,
which will also charge the battery. If the unit stays off, it will take about 4 hours to fully recharge. harging
time will be longer if the unit is in use.
NOTE: Use only Deviser Instruments-approved batteries, adapters, and chargers provided with this
instrument.
WARNING: Low temperatures may cause a temporary reduction o the battery capacity. This will not
damage the battery. High temperatures, however, may cause permanent damage to the battery. See
stated speci ications or environmental tolerances. Recommended charging temperature is 10~35°C.
NOTE: It is advisable to replace the battery when operational time alls below 50% o original capacity.
1-6.2 harging the Unit
There are two ways to charge the DS2831 battery: with the traditional A /D adapter plug, or with the
DS2831 dual-slot charging deck.
With the DC Port
Using the plug, you can recharge the battery while continuing to operate the device.
1. onnect the adapter cord to the power supply; then insert the D connector into the VD power inlet
at the top left of the instrument (while facing the screen). You can continue to operate the meter while
plugged in.
2. When the charging indicator displays a gradually-filling battery icon in the status bar on the screen, the
instrument is charging. The LED next to the power button indicates status: green means fully charged,
red means charging in progress, and red and green flickering indicates no battery or abnormal battery.
With the Charging Deck
The new high-speed charging deck accommodates two battery packs at once.
1. onnect the adapter cord to the power supply. Then insert the D connector into
the D input pocket of the charging deck. (The “Power” LED will turn red.)
2. Ensure the DS2831 is OFF. Remove the DS2831’s battery pack using the rear access
panel and a flat-head screwdriver. Insert the battery, contact points down, into the
harge1 or harge2 slot. Its LED will turn red if successful; when fully charged, it will
turn green.
3. Remove the battery when complete, then disconnect the A power adapter.

Part I: DS2831 Basics
15
High-speed charging deck, with dual battery slots
With either method, once the instrument reaches full charge, it is recommended to charge for 1 additional
hour to help extend the operation time. After charging, unplug the D connector, and then pull out the A
adapter from the outlet.
To avoid overheating, do not leave the A adapter and power supply connected while storing.
NOTE: Charge the instrument ully be ore using it or the irst time.
Adapter Speci ications
Model No.
FSP060
-
DBAE1
A input
~100
-
240V,
1.5A, 50
-
60Hz
D output
12.0V 5A MAX

Part I: DS2831 Basics
16
Glossary of Acronyms
AA Advanced Audio oding
A -3 Dolby A -3 audio coding
A PR Adjacent hannel Power Ratio
AE Audio Engineering Society
AES Advanced Encryption Standard
ATDMA Advanced Time Division Multiple Access
ATS Advanced Television Systems ommittee
AVG Average
BAT Bouquet Association Table
BER Bit Error Rate
BP P Bidirectional oded Picture
AT onditional Access Table
IR International Radio onsultative ommittee
N arrier-to- omposite Noise Ratio
R yclic Redundancy heck
SO omposite Second Order Beat
TB omposite Triple Beat
M able Modem
LDI hrominance-Luminance Delay Inequality
LGI hrominance-Luminance Gain Inequality
MTS able Modem Terminal System
PE ustomer Premise Equipment
VBS omposite Video Broadcast Signal
olor Video Blanking and Sync
omposite Video, Blanking, Synchronization
omposite Video Bar Signal
W ontinuous Wave
DAVI Digital Audio Video ouncil
D T Discrete osine Transform
DFT Discrete Fourier Transform
DG Differential Gain
DH P Dynamic Host onfiguration Protocol
DIT Discontinuity Information Table
DOM Depth of Modulation
DNS Domain Name System
DO SIS Data-Over- able Service Interface
Specifications
DP Differential Phase
DTS Decoding Time Stamp
DVB Digital Video Broadcasting
DVB- Digital Video Broadcasting- able
EAP Extensible Authentication Protocol
EBU European Broadcasting Union
E M Entitlement ontrol Meassage
EIA Electronic Industries Association
EIT Event Information Table
EMM Entitlement Management Message
eMTA Embedded multimedia terminal adapter
EPG Electronic Program Guide
ES Elementary Stream
ETSI European Telecommunications Standards
Institute
ETT Extended Text Table
EVM Error Vector Magnitude
EVS Error Vector Spectrum
ES Errored second
F Federal ommunications ommission
FDD Frequency division duplex
FE Forward Error orrection
FFT Fast Fourier Transform
FIP Fiber Inspection Probe
FM Frequency Modulation
FSK Frequency-Shift Keying
FTP File Transfer Protocol
G R Ghost ancellation Reference
GOP Group of Pictures
GPS Global Positioning System
HD High Definition (video)
HF Hybrid Fiber- oaxial
I P Intra oded Picture
I R In hannel Frequency Response
IE International Electrotechnical ommission
IEEE Institute of Electrical & Electronics Engineers
IMD Intermodulation Distortion
IP Internet Protocol
IRD Integrated Receiver Decoder
ISO
International Organization for Standardization
ITU International Telecommunications Union
J TEA Japan able Television Engineering
Association
LAN Local Area Network
LSB Least Significant Bit
LTE Long term evolution
MA Media Access ontrol layer
MER Modulation Error Ratio
MGT Master Guide Table
MPE MultiProtocol Encapsulation
MPEG Moving Pictures Expert Group
MSB Most Significant Bit
MSD Minimum Signal Duration
N TA National able Television Association
NEG Negative peak
NIT Network Information Table
NTS National Television Standards ommittee

Part I: DS2831 Basics
17
NVOD Near Video On Demand
OFDM Orthogonal frequency division multiplexing
OFDMA Orthogonal frequency division multiple
access
OPM Optical Power Meter
PAL Phase Alternate Line
PAT Program Association Table
P P Predictive oded Picture
P R Program lock Reference
PD H Physical downlink control channel
PES Packetized Elementary Stream
PID Packet Identifier
PMT Program Map Table
POS Positive Peak
POI Probability Of Intercept
PING Packet Internet Groper
PPPoE Point to Point Protocol over Ethernet
PSI Program Specific Information
PSIP Program and System Information Protocol
PSK Phase Shift Key
PTS Presentation Time Stamp
QAM Quadrature Amplitude Modulation
QPSK Quadrature phase shift keying
RMS Root Mean Square
RBW Resolution Band Width
RRT Ratings Text Table
RSSI Received signal strength indicator
RST Running Status Table
RF Radio Frequency
SAM Sample detector
SES Severely errored second
S DMA Synchronous ode Division Multiple Access
S -FDMA Single carrier frequency division multiple
access
S TE Society of able Telecommunication
Engineers
SD Standard Definition (video)
SDT Service Description Table
SES Severely errored second
SE AM Sequential olor and Memory
Sequential ouleur avec Memoire
SI Service Information
SIT Selection Information Table
SMPTE Society of Motion Picture and Television
Engineers
SNR Signal-to-Noise Ratio
SSID Service Set Identifier
ST Stuffing Table
STB Set Top Box
ST System Time lock
STD System Target Decoder
STT System Time Table
TDMA Time Division Multiple Access
TDD Time division duplex
TDT Time and Date Table
TFTP Trivial File Transfer Protocol
TKIP Temporal Key Integrity Protocol
TOD Time Of Day
TOT Time Offset Table
TS Transport Stream
TSDT Transport Stream Description Table
TV T Terrestrial Virtual hannel Table
U D Upstream hannel Descriptor
UE User equipment
UT oordinated Universal Time
VBW Video Band Width
V T Virtual hannel Table
VFL Visual Fault Locator
V/A Video to Audio carrier level ratio
VITS Vertical Interval Test Signal
VoIP Voice over Internet Protocol
VSB Vestigial Sideband Modulation
WiFi Wireless Fidelity
WEP Wired Equivalent Privacy
WPA-PSK Wi-Fi Protected Access -Pre-shared key

Part I: DS2831 Basics
18
hapter 2: Instrument Overview
This chapter describes how to get started with the DS2831 Digital TV Spectrum Analyzer. Topics covered in this
section include:
• Overview of instrument panels, display, and operation
• hanging measurement modes and applications
2-1 Unpacking the DS2831 Instrument
When unpacking your DS2831 instrument for the first time, it is recommended that you follow these steps.
1. Open the package carefully. heck the box and packing material; keep them for potential future
servicing of your product. If the packing material is damaged, the product may have sustained
damage during shipping; please proceed with caution during the following steps. Keep detailed
records and pictures of any physical damage to the box or the equipment inside. Remove the
instrument, and search for any physical damage that could have occurred during shipping. Follow
the stated instructions upon initial power-up. If repairs are required, contact your nearest Deviser
Instruments Inc. representative.
2. heck that all accessories and materials are accounted for. If accessories or other components are
missing, contact your nearest Deviser Instruments Inc. representative.
3. onnect the power supply to the instrument. harge fully before using.
For a comprehensive list of compatible accessories, see Section 1-2.
2-2 Powering On the DS2831
To turn on the DS2831, press and hold the On/Off button on the
front panel (see diagram in Section 2-3) for approximately 1-2
seconds. The instrument will take approximately 60 seconds to
complete power warm-up and load the application software.
When finished, the user profile screen will appear (left).
On this screen, you can login to an existing user profile, which will
apply the channel plan associated with that profile. You can also
edit the user’s name, ID, or company by tapping Edit ; add or
delete users; or change the system language. Tap Login to
continue to the home menu and select a measurement mode.
NOTE: If desired, you may disable the multi-user startup menu, proceeding directly to the Home menu upon
booting up the instrument. See Section 30-2.5 for instructions.
To power the device off, press the On/Off button briefly and select Power O . You can also set the device
to Standby mode, which reduces boot time and power consumption while the unit sleeps.
Press the button and select Reboot to restart the instrument software. Press the green Esc key (below the
function keys, F1-F7) to exit the dialog instead.

19
Part I: DS2831 Basics
2-3 Front Panel Overview
The DS2831 Digital TV Spectrum Analyzer’s front panel contains the software boot switch and a number of
LED status indicator lights. It also bears the unit’s model number. You can use the L D touchscreen to
navigate most basic functions; just use your finger or the provided stylus to tap the desired icon or setting.
1. LED Charge Indicator
This light shows the battery charge status. When red, the battery is charging; when green, it is fully charged.
2. Power ON/OFF
Press to turn the DS2831’s application software ON and OFF. Press while ON to shut down, reboot, or place
the unit in standby mode.
3. Brightness Control
With the unit powered on, press the green button to the left of the power button to launch the DS2831
screen brightness control. Use the arrow keys (8) or rotary knob (9) to adjust the setting from 0-100%, then
press this button again to confirm.
4. Function Keys
Keys F1-F7 are used to select corresponding settings or features displayed on the screen. Press one of these
keys to select the menu item displayed closest to it. For example, when selecting “Downstream” or
“Upstream”, the listed settings will appear next to the F1 and F2 keys, respectively. Press F1 to select
Downstream and F2 to select Upstream.
5. Measurement Modes
The four keys located next to the rotary knob will activate different measurement modes. Press SPECT for the
spectrum analysis mode; SLM for channel measurement ; CM for cable modem; and AUX for simultaneous
QAM and spectrum analysis (provided that the DS2831 is tuned to a digital carrier frequency and is in FFT
acquisition setting).
6. Navigation Keys
The six keys located along the bottom of the screen activate different DS2831 management menus. Press
CH for the hannel Editor menu; FILE to manage or view saved files; SAVE to save a screenshot or data file;
AUTO to access the auto test menu; SETUP to change system settings; and HOME to return to the
measurement application menu.

Part I: DS2831 Basics
20
7. Dual Alphanumeric Keypad
The keypad can be used to input numerical entries or type words (e.g., for naming files). Press the green
Back key to erase the last entry, if you entered an unintended value.
8. Arrow Keys
The arrow keys above and below the rotary knob are used to adjust settings or move markers. Press the top
arrow to increase the selected value and the bottom arrow to decrease it.
9. Rotary Knob
This spinning knob can be used to change the parameter to control, or to move marker lines. Place a finger
in the round depression (or along the protruding lip on the right side) and turn the knob clockwise to move
right, or counter-clockwise to move left. Push the knob in, like a button, to confirm the entry.
10. Esc Button
Press the Esc button to cancel an entry or return to the previous application or menu.
11. Touchscreen
The DS2831 features a capacitive L D touchscreen as an alternate means of operating the unit. Tap the
screen to select icons, explore menus, and more.
2-4 Top Panel Overview
The test instrument’s top panel contains connectors and ports used to transfer data, charge the instrument,
display data on a P , and other functions. See the diagram and descriptions below.
Adapter
Used to supply the DS2831 with electricity and charge the battery. onnect to a wall outlet using the power
supply included.
USB Type-A port
The DS2831 has a Type-A USB 2.0 port that accepts USB storage devices for transferring measurements,
setup files, screen images, GPS dongle option, and other data.
LAN port
The LAN port is used to connect the device to a P . The Deviser EDGE platform provides an easy method to
manage, archive, analyze, and print measurement data.
VFL port
Generates a red beam that highlights faults, stresses, and bends in an optical fiber connected to the port.
For safety, do not look directly into the VFL port when the light is on.