Planar IT-088 User manual

IT-088
DIGITAL DVB-T SIGNAL ANALYZER
OPERATING MANUAL

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31.03.10

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TABLE OF CONTENTS
1. PRODUCT FAMILY GENERAL INFORMATION.........................................................5
2. GENERAL DESCRIPTION AND PRINCIPLE OF OPERATION .................................6
2.1. INTRODUCTION............................................................................................................6
2.2. SAFETY PRECAUTIONS ................................................................................................6
2.3. FUNCTION ..................................................................................................................7
2.4. ENVIRONMENT CONDITIONS .........................................................................................7
2.5. PACKAGE CONTENTS ..................................................................................................8
2.6. DESIGN AND OPERATION OVERVIEW.............................................................................9
2.6.1. Principle of Operation.....................................................................................9
2.6.2. Block Diagram..............................................................................................10
2.6.3. Component Arrangement .............................................................................11
3. PREPARATION FOR OPERATION ..........................................................................11
4. OPERATION PROCEDURE .....................................................................................11
4.1. CONTROLS AND INDICATORS ......................................................................................11
4.2. PREPARATION FOR MEASUREMENTS...........................................................................12
4.3. MEASUREMENT PROCEDURE .....................................................................................15
4.3.1. General Information......................................................................................15
4.3.2. LEVEL Measurement Mode .........................................................................16
4.3.3. SPECTRUM Measurement Mode ...............................................................18
4.3.4. SCAN Measurement Mode .........................................................................18
4.3.5. TILT Measurement Mode ............................................................................19
4.3.6. RIPPLE Measurement Mode.......................................................................20
4.3.7. DVB-T/H TABLE Measurement Mode.........................................................20
4.3.8. DVB-T/H GRAPHIC Measurement Mode.....................................................23
4.3.9. DVB-T/H CONSTELLATION Measurement Mode .......................................25
4.3.10. Measurement Parameters Setting Mode....................................................27
4.4. DATA LOGGER FUNCTION ..........................................................................................28
4.4.1. General Information......................................................................................28
4.4.2. Channel Plan List .........................................................................................28
4.4.3. Channel Data Logger ...................................................................................32
4.4.4. Spectrum Data Logger .................................................................................36
4.5. MEMORY MANAGER ..................................................................................................38
4.5.1. General Information......................................................................................38
4.5.2. Operating the Memory Manager ..................................................................38
4.5.3. Testing the File Structure .............................................................................39
4.5.4. Determining the Memory Resources............................................................39
4.5.5. Viewing the Structure Table and Files of all Types ......................................39
4.5.6. Clearing the Memory....................................................................................40
4.6. SELF-TEST MODE .....................................................................................................41
4.6.1. General Information......................................................................................41
4.6.2. Removable Module Temperature.................................................................41
4.6.3. Battery Condition..........................................................................................41
4.6.4. Standby Battery Voltage...............................................................................42
4.6.5. Program Memory Check ..............................................................................42
4.6.6. Base Unit Check ..........................................................................................42
4.6.7. Removable Module Check ...........................................................................42
4.6.8. Data Logger NVRAM Check ........................................................................42
4.7. USER INTERFACE SETTING ........................................................................................42
4.7.1. General Information......................................................................................42
4.7.2. LCD Backlight Setting ..................................................................................43
4.7.3. LCD Contrast Setting ...................................................................................43
4.7.4. Audio Indication Volume Setting ..................................................................43

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4.7.5. Audio Indication Switch ................................................................................43
4.7.6. Language Selection......................................................................................43
4.7.7. Reference Clock Frequency Setting.............................................................44
4.7.8. Reference Clock Date Setting ......................................................................44
4.7.9. Reference Clock Time Setting......................................................................44
4.7.10. Key Pressing Sound Selection ...................................................................44
4.7.11. Measurement Mode Quick Access.............................................................44
4.8. IDENTIFICATION DATA READOUT.................................................................................44
4.9. AUDIO INDICATION CHECK .........................................................................................45
4.10. OPERATION CONTROLLED BY PC .............................................................................45
4.10.1. General Information....................................................................................45
4.10.2. Configuration Requirements.......................................................................45
4.10.3. Software Installation...................................................................................46
4.10.4. Starting the Program ..................................................................................46
4.10.5. Program Main Window ...............................................................................47
4.10.6. Files Management......................................................................................48
4.10.7. Channel Diagram .......................................................................................49
4.10.8. Spectrum Analyzer.....................................................................................50
4.10.9. Digital Signal Measurement Mode..............................................................53
4.10.10. Data Logs Management ...........................................................................54
4.10.11. Channel Plan Management......................................................................58
4.10.12. TV System Editor .....................................................................................60
4.10.13. Report Viewing and Printout.....................................................................61
4.10.14. Program Settings......................................................................................61
4.10.15. Information Panel .....................................................................................63
4.11. SOFTWARE UPDATING .............................................................................................63
4.11.1. Software Updating via PC ..........................................................................63
4.11.2. Software Updating by means of MC-088 Removable Module....................65
4.11.3. Removable Module Software Memory Manager ........................................65
4.11.4. DVB-T/H Demodulator Software Updating .................................................66
4.12. BATTERY OPERATION ..............................................................................................66
5. MAINTENANCE ........................................................................................................67
6. TROUBLESHOOTING ..............................................................................................67
7. STORAGE.................................................................................................................68
8. TRANSPORTATION .................................................................................................68
9. LABELING.................................................................................................................68
10. WARRANTY INFORMATION..................................................................................68
11. APPENDIX ..............................................................................................................70
11.1. FREQUENCY TABLE FOR D/K STANDARD CHANNELS ..................................................70
11.2. FREQUENCY TABLE FOR B/G STANDARD CHANNELS..................................................73
11.3. FREQUENCY TABLE FOR M/N AIR STANDARD CHANNELS...........................................76
11.4. FREQUENCY TABLE FOR M/N CATV STANDARD CHANNELS .......................................79

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1. PRODUCT FAMILY GENERAL INFORMATION
IT-08 is a multifunction handheld compact lightweight measurement instrument
incorporating two components. One of the components, MB-08 Base Unit, remains
invariable and provides display, control and powering (from batteries or mains adapter)
features. The other component, MC-08x, is one of the removable modules, which
determine measurement functions of the whole instrument.
IT-08 is capable to satisfy all your requirements in radio, cable and satellite, analogue
and digital TV measurements.
According to your measurement target, you can easily and quickly plug in one of the
modules into the Base Unit and perform the needed measurements. So, replacing the
modules you can obtain options featuring the following different applications:
IT-081 TV Level Meter (MC-081 module plugged-in), 5 to 900 MHz range.
Measurement of level, video-audio and carrier-noise ratios;
IT-082 Digital Satellite Meter (MC-082 module plugged-in), 950 to 2150 MHz range.
Measurement of BER and MER values for digital satellite (QPSK DVB-S). Powering LNB
SAT. DiSEqC generator;
IT-084 TDR Cable Reflectometer (MC-084 module plugged-in) for identification and
precision fault location in cables up to 1,600 m in length. Resolution 0.11 m;
IT-086 Optical Power Meter (MC-086 module plugged-in), measuring at –50 dBm to
+18 dBm range and wavelengths 1310 and 1550 nm.
IT-087 Digital TV QAM Signal Analyzer (MC-087 module plugged-in), 47 to 862 MHz
range. Support of DVB-C and ITU-T ANNEX A/C. Measurement of carrier level, C/N and
V/A ratios, channel power, MER, BER, and constellation diagram.
IT-088 Digital TV DVB-T Signal Analyzer (MC-088 module plugged-in), 47 to 862 MHz
range. Support of DVB-T and DVB-H with COFDM modulation. Measurements for analog
channels: carrier level, C/N and V/A ratios and for digital channels: channel power, MER,
BER, and constellation diagram.
Now we are pleased to offer you the six above modules, but the number is supposed to
grow in the nearest future. You can purchase MB-08 Base Unit accompanied by any of the
module(s), currently required, at your option. Later on, you can acquire any other
module(s) to expand your measurement abilities.
IT-08 GENERAL FEATURES (similar for all the IT-08 family instruments):
MB-08 dimensions (WxHxD) 90 x 200 x 55 mm
MC-08x dimensions (WxHxD) 60 x 70 x 27 mm
IT-08 weight 0.6 kg (including batteries)
keyboard made of rubber
display graphic LCD 128x64 pixels with backlight
power supply
internal NiMH AA rechargeable batteries, 2100 mAh (6 pcs)
external 12V/0.8A mains adapter
PC compatible interface RS-232 serial port
operating temperature −10 to +40 °C
user software update through serial interface from PC or the MC-08x
Removable Module

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2. GENERAL DESCRIPTION AND PRINCIPLE OF OPERATION
2.1. Introduction
This Operating Manual is intended for introducing the design, functions, and basic
instructions related to operation and servicing of the IT-088 Digital DVB-T Signal Analyzer
(Analyzer).
The IT-088 is designed for control and adjustment of television and broadcasting
distribution networks as well as of separate components of such networks, or other
electronic devices. The Analyzer allows measurement of channel power and parameters of
TV signal with analogue and digital (DVB-T/H standard) modulation.
The Analyzer can be used both in laboratory, powered by an external power source,
and in field, powered by batteries.
The reliability of the IT-088 is ensured by fulfillment of regular maintenance procedures.
These procedures and their intervals are described in section 5.
In this manual the following abbreviations are used:
PC - Personal Computer
CD - Compact Disk
SW - Software
LCD - Liquid Crystal Display
FEC - Forward Error Correction
IF - Intermediate Frequency
HF - High Frequency
CDL - Channel Data Logger
SDL - Spectrum Data Logger
MER - Modulation Error Ratio
BER - Bit Error Rate
QPSK -Quadrature Amplitude Modulation
QAM - Quadrature Amplitude Modulation
COFDM - Coded Orthogonal Frequency Division Multiplexing
DVB-T - Digital Video Broadcasting – Terrestrial
DVB-H - Digital Video Broadcasting – Handheld
2.2. Safety Precautions
Thoroughly inspect the product and carefully read the related documentation to get
acquainted with all the safety markings and instructions before you start to operate the
Analyzer.
WARNING Only trained service personnel aware of the hazards involved
should perform repair on the Analyzer.
CAUTION Tuning the Analyzer and replacement of the components that
influence the accuracy of measurements without service personnel is
strictly prohibited, since the components used in the Analyzer are purpose-
made and their replacement will result in inaccurate operation of the
Analyzer. To exclude the possibility of mechanical damage to the IT-088,
the instructions regarding the storage and transportation (see sections 7
and 8) of the Analyzer must be observed.

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2.3. Function
The IT-088 Digital TV DVB-T Signal Analyzer belongs to the family of IT-08
measurement instruments and is intended for measurement of the parameters of DVB-T
and DVB-H (hereinafter DVB-T/H) standard TV signal.
The Analyzer offers the following measurement modes for analog channels: video
carrier level, video carrier to audio carrier (V/A) ratio, and video carrier to noise (C/N) ratio.
For digital channels the measurement modes are the following: channel power and C/N
ratio. For DVB-T/H signals IT-088 offers measurement of reception quality parameters:
modulation error ratio MER, bit error ratio BER before and after Viterbi decoder, number of
error blocks after Reed-Solomon decoder, immunity margin MARGIN, and constellation
diagram. IT-088 features automatic defining of the settings of DVB-T/H signals (channel
frequency, number of subcarriers, guard interval, FEC, channel bandwidth, and modulation
type).
The IT-088 can be connected to a personal computer to access additional modes. The
IT-088 operates in spectrum analyzer mode displayed on the built-in LCD. The Analyzer
allows to measure direct and alternating voltage of the remote power supply of the TV and
broadcasting distribution networks.
The appearance of the Analyzer and its components are displayed in figures 2.1 and
2.2.
Figure 2.1 Figure 2.2
This Operating Manual is made in accordance with the software version 8.0.0.2 for IT-
088.
2.4. Environment Conditions
Normal operating conditions:
a) ambient temperature (23±5)
0С;
b) relative air humidity (55±25)%;
c) atmospheric pressure 84-106 kPa (630-795 mm Hg);
d) voltage transients correspond to installation category CAT. II.
Rated operating conditions:
a) ambient temperature from -10 to 40 °С;
b) relative air humidity not greater than 90% at 25 ºСtemperature;
c) atmospheric pressure 84-106 kPa (630-795 mm Hg).

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2.5. Package Contents
The Analyzer package includes:
a) MB-08 Base Unit............................. 1 pc.
b) MC-088 Removable Module ........... 1 pc.
c) Carrying Case ................................. 1 pc.
d) NiMH, AA Batteries ......................... 6 pcs
e) PS12/0.8 Mains Adapter ................. 1 pc.
f) “F”-”F” Adapter ................................ 1 pc.
g) RS-232 Data Transfer Cable........... 1 pc.
h) Rubber Holster................................ 1 pc.
i) Protective Bag................................. 1 pc.
j) Operating Manual ........................... 1 pc.
The Removable Module (if supplied separately) package includes:
a) МС-088 Removable Module .......... 1pc.
b) “F”-”F” Adapter ................................ 1pc.
c) Operating Manual ........................... 1pc.
Other optional accessories:
a) RS232-USB Adapter.
2.6 Specifications
Frequency tuning range: 5 to 900 MHz;
Operating frequency range: 45 to 865 MHz;
Resolution: 125 kHz;
Channel allocation standard: loaded from PC;
Input parameters:
a) input impedance within operating frequency range: 75 Ohm;
b) input impedance for frequencies up to 50 Hz: at least 200 kOhm.
Allowed resulting value of AC input voltage for frequencies over 5 MHz: 3 V.
Allowed resulting value of AC and DC input voltage for frequencies under 5
MHz: 150 V.
- Built-in attenuator: 20, 40 dB;
- Built-in amplifier (for digital channel measurements only) 11 dB;
- Input mismatch attenuation:
- Input attenuator and amplifier off: 14 dB;
- Input attenuator on: 18 dB;
- Level measurement range with manual attenuator setting:
- Input attenuator off 30 to 80 dBμV;
- Input attenuator 20 dB 50 to 100 dBμV;
- Input attenuator 40 dB 70 to 120 dBμV;
- Measurement level resolution: 0.1 dB;
- Accuracy within 30-120 dBµV level range: ±1.5 dB;
- Accuracy at operating temperature: ±2.2 dB;
- Measurement channel passband for -3 dB level: 230 ± 60 kHz;
- DVB-T/H demodulator parameters:
- Channel modulation: COFDM;
- Subcarrier modulation: QPSK, QAM16,
QAM64;
- Channel bandwidth: 8 MHz;
- Number of subcarriers: 2к, 4к, 8к;

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- Guard interval: 1/32, 1/16, 1/8, 1/4;
- Hierarchical modulation: =1, =2, =4;
- FEC: 1/2, 2/3, 3/4, 5/6, 7/8;
- MER measurement range (QAM64, FEC=3/4): 18 to 35 dB;
- MER measurement resolution: 0.1 dB;
- MER measurement accuracy within the working range of
input signal power: ±2.0 dB;
- BER measurement range:
- BER before Viterbi decoder: 1,0x10-
2
to 1,0x10-
8
;
- BER after Viterbi decoder: 1,0x10-
3
to 1,0x10-
8
;
- DVB-T/H channel real power threshold (BER<2.0x10-
4
):
- QAM64, FEC=3/4, S/N=60 dB: 40 dBμV;
- Frequency auto tuning step: ±0.5 MHz;
- Frequency indication: 6 characters on LCD;
- Channel number indication: 3 characters on LCD;
- Signal level indication: 4 characters on LCD;
- Warm-up time: 10 min.;
- IT-088 can be powered by:
- AC circuit with 220 ± 22 V voltage, 50 ± 0.5 Hz
frequency with no more than 5% harmonic content, via
PS12/0.8 Mains Adapter;
- external DC source with 12 ± 0.6 V voltage, and no
more than 0.5 V ripple;
- batteries with capacity at least 2100 mAh;
- Current consumed from external power source or
batteries:
0.8 А;
- Continuous stable operation under normal conditions
(when powered by external source): 24 hrs;
- Battery duration under normal conditions (2100 mAh
battery capacity): 6 hours;
- Mean time between failures, no less than: 10000 hours;
- Average lifetime, no less than: 5 years;
- Dimensions: 200x90x55 mm;
- Package dimensions: 400x300ч90 mm;
- Weight: 0.6 kg;
- Weight in package: 2.2 kg.
2.6. Design and Operation Overview
2.6.1. Principle of Operation
The Digital DVB-T/H Signal Analyzer is a receiver of DVB-T/H signals with
demodulation of the traffic stream to MPEG-2. The input tuner is a super heterodyne
receiver with triple frequency conversion (auto or manual frequency tuning). Modulation
error ratio MER and constellation diagram are measured in the process of COFDM signal
demodulation based on vector analysis. Bit error rate BER in digital stream is determined
by means of analysis of Viterbi decoder operation (BER before the Viterbi decoder) and
Reed-Solomon decoder operation (BER after the Viterbi decoder). Channel power is
measured by means of analog-to-digital converter after signal peak detection at output of
logarithmic detector of the amplifier of the third IF. The principle of spectrum analyzer is
based on sequential analysis method with spectrum indication on the LCD of the Analyzer
or on PC.

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The view displayed on the screen in DVB-T/H reception quality parameters
measurement mode is the numeric values and graphic representation of the measured
digital parameters (MER, BER before and after the Viterbi decoder, error bit counter after
Reed-Solomon decoder, and immunity margin). The constellation diagram mode shows
the vector structure of the quadrature components of the demodulated digital signal on the
phase plane. The spectrum analyzer mode shows the signal magnitude (signal frequency
bar-graph). The mode of signal level measurement in a frequency point displays the
numeric value of the signal level, V/A and C/N ratios.
2.6.2. Block Diagram
The block diagram of IT-088 is shown in figure 2.3.
Figure 2.3
After the Low-Pass Filter (LPF), the input signal if necessary is strengthened by the
Wide-Band Amplifier (WBA) or reduced by the two Attenuators (A1) and (A2). Then it is
transformed into the second IF signal by the Tuner (T). The WBA can be activated only for
digital channel measurements. The Tuner is the superheterodyne detector with double
frequency conversion. The first IF is 1220 MHz. In the signal level measurement mode the
second IF is 39 MHz, for digital channels demodulation the second IF is 36.125 MHz.
The signal of the second IF, after the Bandpass Filter (BPF1) and conversion in the
Mixer (M1) has the third IF, and further filtered at 10.7 MHz frequency by BPF3, which
determines the receiver frequency band.
Logarithmic Gain Amplifier Limiter (LGAL) performs logarithmation and signal detection.