Labgear DAT103 User manual

DAT103
DVB-T SIGNAL ANALYZER
Operating Manual

3
TABLE OF CONTENTS
TABLE OF CONTENTS................................................................................................................... 3
1 GENERAL INFORMATION ................................................................................................... 4
1.1 I NTRODU TION ............................................................................................................4
1.2 S AFETY PRE AUTIONS .................................................................................................4
2 GENERAL DESCRIPTION AND PRINCIPLE OF OPERATION..................................... 5
2.1 F UN TIONS .................................................................................................................5
2.2 E NVIRONMENTAL ONDITIONS .......................................................................................6
2.3 P A KAGE ONTENTS ....................................................................................................6
2.4 S PE IFI ATION ............................................................................................................6
2.4.1 Construction.................................................................................................................7
3 PREPARING TO OPERATE................................................................................................... 7
4 PREPARING PROCEDURES ................................................................................................. 8
4.1 ONTROLS AND INDI ATORS .........................................................................................8
4.2 P REPARING FOR MEASUREMENT ...................................................................................8
4.3 M EASUREMENT PRO EDURE .........................................................................................8
4.3.1 General information.....................................................................................................8
4.3.2 LEVEL measurement mode........................................................................................10
4.3.3 SCAN measurement mode..........................................................................................12
4.3.4 IPPLE measurement mode ......................................................................................13
4.3.5 EXPANDED SPECT UM measurement mode..........................................................14
4.3.6 ME /BE measurement mode ...................................................................................14
4.3.7 CONSTELLATION measurement mode.....................................................................16
4.3.8 AMP Power Control...................................................................................................17
4.4 D ATA MANAGER .........................................................................................................18
4.4.1 General information...................................................................................................18
4.4.2 Channel plan manager...............................................................................................18
4.4.3 Data log manager ......................................................................................................21
4.5 S ETUP ......................................................................................................................24
4.6 S ELF - TEST ................................................................................................................25
4.7 I DENTIFI ATION .........................................................................................................26
4.8 P OMMUNI ATION ..................................................................................................26
4.8.1 General information...................................................................................................26
4.8.2 Software installation ..................................................................................................27
4.8.3 USB driver installation ..............................................................................................27
4.8.4 PC communication launch .........................................................................................27
4.8.5 Firmware update........................................................................................................27
4.8.6 Channel template edit ................................................................................................28
5 MAINTENANCE ..................................................................................................................... 30
6 TROUBLESHOOTING .......................................................................................................... 30
7 STORAGE ................................................................................................................................ 31
8 TRANSPORTATION .............................................................................................................. 31

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1 GENERAL INFORMATION
1.1 Introduction
This operating manual introduces the design, functions and basic instructions for
operation of the LABGEAR DAT103 Digital and Analogue Television analyzer.
DAT103 is designed to permit optimal testing and adjustment of complete television
and broadcast distribution networks, network components and related electronic products.
The analyzer allows measurement DVB-T Digital and Analogue TV signals.
DAT103 can be useful in a laboratory, or in the field thanks to flexible powering options
that includes an internal re-chargeable Li-ion battery.
In this manual the following abbreviations are used:
AD - Analog-to-Digital onverter
BER - Bit Error Ratio
D - compact disk
OFDM - oded Orthogonal Frequency Division Multiplexing
DVB-T - Digital Video Broadcasting - Terrestrial
IF - Intermediate Frequency
L D - Liquid rystal Display
MER - Modulation Error Ratio
MPEG2 - Motion Pictures Expert Group
P - Personal omputer
preBER - BER before Viterbi decoder
postBER - BER after Viterbi decoder
QAM - Quadrature Amplitude Modulation
QPSK - Quadrature Phase Shift Keying
1.2 Saf ty pr cautions
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 should attempt to repair this 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 DAT103, the instructions regarding the storage and transportation (Sections 7 and 8)
of the analyzer must be observed.
Take care to keep coax braid wire cuttings away from your analyzer. Just one piece
inside can be expensive to locate and remove and may even cause permanently damage.

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2 GENERAL DESCRIPTION AND PRINCIPLE OF OPERATION
2.1 Functions
The DAT103 offers measurement of the following parameters:
• Analog channels: video carrier level, V/A ratio, and /N ratio.
• Digital channels: signal level measured in channel power.
• DVB-T signals: measurement of reception quality parameters:
• Modulation Error Ratio (MER)
• Bit Error Ratio (BER) before and after Viterbi decoder
• Error packets after Reed-Solomon decoder counter
• onstellation diagram.
DAT103 settings including channel frequency, subcarriers number, subcarriers
modulation type, guard interval, code rate and spectrum inversion are set
automatically. The DAT103 can be connected to a personal computer to access
additional functions. The analyzer also measures D and A voltages of line
power supplies in TV and broadcasting distribution networks.
Front and bottom views of the analyzer are shown in Figure 1.1. and Figure 1.2.
Figure 1.1 Figure 1.2

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2.2 Environm ntal conditions
Normal operating conditions:
a) ambient temperature (23±5) °С;
b) relative air humidity (55±25)%;
c) atmospheric pressure 84-106 kPa (630-795 mm Hg);
d) voltage transients correspond to installation category AT. II.
Rated operating conditions:
a) ambient temperature from -10 to 50 °С;
b) relative air humidity not greater than 90% at 25 ºС temperature;
c) atmospheric pressure 84-106 kPa (630-795 mm Hg).
2.3 Packag cont nts
The analyzer package includes:
a) DAT103 DVB-T Signal Analyzer .......................................1 pc;
b) Impact resistant holster ....................................................1 pc;
c) Li-ion battery (internal) ......................................................1 pc;
d) “F”-”F” adapter...................................................................1 pc;
e) 12V/1.2A charger ..............................................................1 pc;
f) ompact disc ....................................................................1 pc;
g) Reference plastic card ......................................................1 pc;
h) Operating Manual..............................................................1 pc.
2.4 Sp cification
Operating frequency range .......................................................... 45 to 900 MHz
Frequency Resolution.................................................................. 125 kHz
hannel plans.............................................................................. Australia, NewZealand
and one, ustomized plan loaded from Personal omputer (section 4.9.6)
Input parameters:
input impedance within operating frequency range.......................................75 Ohm
input impedance for frequencies up to 50 Hz................................at least 200 kOhm
A input voltage range for frequencies over 5 MHz……………………3 V
A and D input voltage range for frequencies under 100Hz………..30V
Signal level measurement range, Analogue ................................ 30 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 bandwidth for -3 dB level ......................... 230 ± 60 kHz
Frequency indication.................................................................... 6 character L D
hannel number indication .......................................................... 3 character L D
Signal level indication .................................................................. 4 character L D
Input signal parameters
hannel bandwidth................................................................. 7 or 8 MHz
Modulation type ...................................................................... OFDM
Subcarrier modulation type..................................................... QPSK, QAM16, QAM64
Subcarrier number.................................................................. 2k, 4k or 8k

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Guard interval......................................................................... 1/32, 1/16, 1/8, 1/4
Hierarchical modulation type .................................................. α=1, α=2, α=4
ode rate................................................................................ 1/2, 2/3, 3/4, 5/6, 7/8
hannel power range, Digital....................................................... 30 to 110 dBµV
MER measurement range (for QAM64, code rate 3/4) ................ 14 to 35 dB
MER measurement resolution ..................................................... 0.1 dB
MER measurement accuracy at operating channel power........... ±2.0 dB
BER measurement range
preBER................................................................................... 1.0x10
-1
to 1.0x10
-8
postBER ................................................................................. 1.0x10
-2
to 1.0x10
-8
hannel power threshold (postBER less than 2x10
-4
)
For QAM64, code rate 3/4, SNR=46 dB ................................. 40 dBµV
Frequency auto tuning range ....................................................... ±0.500 MHz
Warm-up time, less than .............................................................. 5 min
DAT103 powering options:
A mains via 90-264V 50/60 Hz 12V/1.2A charger included
10 to 14 V D external source, with ripple level no greater than …………0.5 V
internal Li-ion battery of 1500 mAh capacity
urrent consumed from external power source or batteries, not greater than …0.6 A
AMP power supply voltage settings…………………….……..…… 12V or 24V
AMP power supply power, no more than………………………..…. 3 W
Power from external D continually for no more than ………………………….…24 hrs
Typical battery charge life under normal conditions (1500 mAh capacity)……… 3 hrs
Mean time between failures, no less than.................................... 10,000 hours
Average life expectancy............................................................... exceeds 5 years
Dimensions.................................................................................. 193 x 94 x 53 mm
Package dimensions.................................................................... 255 х 180 х 70 mm
Weight.......................................................................................... 0.5 kg
Weight in package ....................................................................... 0.95 kg
2.4.1 Construction
The DAT103 is a quality handheld electronic instrument built in a tough plastic field
case that fits snugly in its matching soft shockproof holster.
The front of the Analyzer includes a silicon keypad and a graphical Liquid rystal
Display (Figure 1.1). The bottom panel has a USB P connector and an external power
source connector (Figure 1.2). The 75-Ohm RF input on the top panel is an “F”-male
connector to which an “F” female – female adapter should be used, which makes the RF
input connector replaceable.
3 PREPARING TO OPERATE
When you first receive your instrument, check the contents against the list provided
(Section 2.3). heck the outside of your instrument to make sure your DAT103 is free
from any signs of mechanical damage.
If the DAT103 has been stored in an extremely humid, hot or cold environment, allow it
to acclimatize for at least for 2 hours before powering up.

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4 PREPARING PROCEDURES
4.1 Controls and indicators
The location of controls, indicators and connectors is shown in Figure 1.1. These
elements have the following functions:
a) F1, F2, F3 keys enable functions that correspond to the on screen icons;
b) key allows you to return to the previous menu level;
c) key enables AMP power supply control;
d) , , ◄ , and ► arrows allow you to edit the current operation mode;
e) key allows selection of an item from a list;
f) key switches the Power of on/off;
g) 12V DC 1.2A connector is for an external power source;
h) USB is for connection to a host computer;
i) «INPUT» is an “F”-male connector for RF signal input.
4.2 Pr paring for m asur m nt
Before operating your DAT103, read this Operating Manual carefully, identifying the
location of the controls and indicators (Section 4.1).
For operation with the external power source, connect the charger to the D connector
on the bottom panel of the DAT103 and then to mains power.
Default DAT103 power for stand-alone operation is the internal battery. Push and hold
the key until the L D backlight turns on to start.
The following message (see Figure 4.2.1) will appear on the screen:
Figure 4.2.1
The screen displays the name and model of the Analyzer. After approximately 1
second, the Analyzer will open the main mode-selection menu (Figure 4.3.1), further
referred to as “Main menu”.
4.3 M asur m nt proc dur
4.3.1 G n ral information
The Analyzer features on-screen menus for selection of modes of operation. The icons
of the menu correspond to various functions. The Main menu (see Figure 4.3.1) will
appear on the screen after the Analyzer has completed its power up sequence.

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The Main menu is divided into 2 halves, to step between press the or arrow. You
will see the other Main menu options (Figure 4.3.2). To return to the previous line press
the or arrow again. Function of menu are selectable with the function keys F1, F2 and
F3, which are located under each icon. To return to the Main menu from any function,
press key.
The 6 Main menu functions are accessed with the following icons:
a) LEVEL measurement ........................................................ ;
b) S AN measurement ......................................................... ;
c) MER/BER measurement................................................... ;
d) Service menu .................................................................... ;
e) Data manager menu ......................................................... ;
f) P connection................................................................... .
When is chosen from the Main menu, the Service menu appears on screen
(Figure 4.3.3), and when is chosen, the Data manager menu appears (Figure 4.3.4).
Function of service menu and data manager menu are selectable with function keys
F1, F2 and F3, which are under the relevant icons. To return to previous menu from the
selected function, press key. To return to the Main menu press again.
The 5 Service menu and data manager functions are accessed with the following icons:
a) Setup................................................................................. ;
b) Self-test............................................................................. ;
c) Identification...................................................................... ;
d) hannel plans manager .................................................... ;
e) Data log manager.............................................................. ;
Figure 4.3.1 Figure 4.3.2
Figure 4.3.3 Figure 4.3.4

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The Analyzer offers six modes to measure TV signal parameters:
1- TV channel signal level and power selected by frequency, V/A and /N ratios, as
well as A and D voltages at the input of the Analyzer in LEVEL mode;
2- TV channel level in S AN mode;
3- TV channel level ripple in RIPPLE mode;
4- Signal spectrum view in SPE TRUM mode;
5- DVB-T signal quality parameters in MER / BER mode;
6- DVB-T relative constellation diagram in ONSTELLATION mode.
LEVEL, S AN and MER/BER modes are selectable from the Main menu. SPE TRUM
and RIPPLE mode are selectable from S AN mode by pressing function keys F2 and F3,
correspondingly. ONSTELLATION mode is selected from MER/BER mode by pressing
F2 function key.
4.3.2 LEVEL m asur m nt mod
The icon in the Main menu refers to Level mode. In this mode you can measure
TV channel parameters and signal level at a selected channel or frequency.
The screen view and channel parameter measurement mode is represented in Figure
4.3.5 (for an analog channel) and in Figure 4.3.6 (for a digital channel).
You will see the following data on the screen:
1 – hannel number
2 – hannel level measured in dBµV, dBmV or dBm
3 – Selected frequency in MHz
4 – Vision to Audio carrier ratio in dB for Analogue, D indicates Digital signal detected.
5 – ommand line with commands activated by F1, F2 or F3 keys
6 – hannel name (when working with selected channel plan)
7 – Direct voltage or effective alternating voltage at the input of the Analyzer, at 50/60
Hz frequency, in V
8 – Status of AMP power supply (Section 4.3.8)
9 – arrier to Noise ratio in dB.
When a digital channel is detected the analyzer will show ‘D’ in place of ‘V/A’.
When you open LEVEL mode, you can see the channel plan name indicated by
«Plan:», if one has been selected.
When the LEVEL function is activated, the DAT103 measures the parameters of the TV
channel, which was last selected in one of the measurement modes. This mode will be
indicated by Ch shortcut in command line. Digital or analog modulation type corresponds
Figure 4.3.5 Figure 4.3.6

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to the selected channel plan. If a channel plan has not been selected, the modulation type
is detected automatically.
Three analog channel parameters are measured. Video carrier level at the frequency
tuned. If a channel plan has been selected, the frequency tuned will follow the selected
plan. Vision to Audio ratio is determined by also measuring the audio carrier level and
subtracting this value from the video carrier. The V/A value will be displayed on the screen
in position 4 (Figure 4.3.5).
To measure analogue arrier to Noise ratio the Analyzer compares a measurement at
the tuned frequency with the lowest content of the useful components of RF signal within
the channel bandwidth. /N ratio will appear in position 8 (Figure 4.3.5).
For digital channels, the Analyzer measures signal power within the channel bandwidth
and /N ratio. To measure /N ratio, the Analyzer compares a measurement at the tuned
frequency with the lowest content of the useful components of RF signal outside the
channel bandwidth. /N ratio will appear in (Figure 4.3.6).
The range of voltage measurement at the Analyzer input is from 10 to 100 V. The
absolute error of the measurement is lower than ±1.5 V. The measured value of the
voltage is indicated in position 7 (Figure 4.3.5). If the voltage is D you will see V= on the
screen, if it is A V~ will appear.
To measure channel parameters, select the required channel by ◄ and ► arrows.
If no channel plan is selected, using ◄ and ► arrows you can switch to any channel in
accordance with the channel template (Section 4.7).
Once a signal is detected, the Analyzer will automatically determine the channel type.
The measurements will be performed in accordance with these parameters.
If a channel plan has been selected (Section 4.5), the selection will be performed
between the channels of the plan.
You can access other measurement modes using functional keys. F1 key will open
S AN mode (Section 4.3.3). F2 key will activate the mode of signal level measurement in
a frequency point. F3 key will open MER/BER measurement mode (Section 4.3.6), if the
selected channel is digital.

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Signal level measurement mode tuned by frequency is shown in Figure 4.3.7.
Figure 4.3.7
In this mode neither the digital D, analogue V/A ratio or C/N ratio indicators display.
In the signal level measurement mode, a signal level is measured at the tuned
frequency. This mode is indicated by a Hz message in the command line. Tuning by
frequency is performed in 125 kHz steps by ◄ and ► arrow keys.
By toggling the F2 key you have the option to measure by Hz or Ch
To control AMP power supply, enable the corresponding mode by briefly pressing the
key (section 4.3.8).
4.3.3 SCAN m asur m nt mod
The icon in the Main menu refers to this mode, which displays the signal levels
as a bar-graph. See Figure 4.3.8:
Figure 4.3.8
On the screen you will see the following data:
1 – hannel number indicated by marker
2 – ommand line with commands activated by F1, F2 and F3 keys
3 – hannel name (when working with selected channel plan)
4 – Measured level of channel indicated by marker, in dBmV, dBµV or dBm
5 – Status of AMP power supply (Section 4.3.8)
6 – Marker
7 – hannel status: A – analog, D - digital.
You can navigate the marker by means of ◄ and ► keys.
If no channel plan has been selected, all the channels of the standard channel
allocation will be displayed on the screen. hannel modulation type is determined
automatically when you enter the mode and each time the signal is connected to the input.
It is shown by the progress indicator «chann ls scanning». The modulation type of the
channel indicated by the marker will be shown in position 6 while the measurement is
being performed.

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If one of the channel plans has been selected, the scanning will be performed only over
the selected channels within the plan. In this case, after entering S AN mode you will see
the selected channel plan name indicated by «Plan:» for a few seconds. The navigation by
◄ and ► keys will be fulfilled only within the selected channel plan. The channel name will
be displayed in position 3, modulation type will be displayed in position 6.
The graph reference level shown in Figure 4.3.8 is automatically set to the channel with
the maximum level.
You can access other measurement modes using functional keys. F1 key will open
LEVEL measurement mode (Section 4.3.2). F2 key will open RIPPLE measurement mode
(Section 4.3.4). F3 key will open SPE TRUM measurement mode (Section 4.3.5).
To control AMP power supply, enable the corresponding mode by a short pushing on
the key (section 4.3.8).
4.3.4 RIPPLE m asur m nt mod
This measurement mode is selected from S AN mode by pressing F2 key. This mode
displays signal levels as vertical bars and the horizontal level lines between the peaks of
the two selected channels displaying the delta in the top of the screen. The screen view is
represented in the Figure 4.3.9:
Figure 4.3.9
On the screen you will see the following data:
1 – hannels ripple value between A and B markers
2 – A marker
3 – ommand line with commands activated by F1, F2 and F3 keys
4 – Status of AMP power supply (Section 4.3.8)
5 – B marker
Adjust the marker position by ◄ and ► arrows. Selection of the marker is performed by
F1 and F3 keys and indicated by the asterisk in the command line.
If no channel plan is selected, all the channels of the channel template will be displayed
on the screen. hannel modulation type is determined automatically each time signal is
present on the input and what is shown by the progress indicator (chann ls scanning).
If one of the channel plans has been selected, the scanning will be performed only over
the selected channels within the plan. The navigation by ◄ and ► keys will be fulfilled
only within the selected channel plan.
The graph reference level shown in Figure 4.3.9 is automatically set to the channel with
the maximum level. The marker positions are saved into the memory and restore once you
enter RIPPLE measurement mode again.
You can return to S AN measurement mode by pressing F2 key.
AMP power supply, is controlled by pressing the key briefly (section 4.3.8).

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4.3.5 EXPANDED SPECTRUM m asur m nt mod
This measurement is selected from the S AN mode by pressing the F3 key. This mode
displays spectrum of the input signal in scaleable frequency range. See Figure 4.3.10:
Figure 4.3.10
On the screen you will see the following data:
1 – Frequency point indicated by the marker
2 – ommand line with commands activated by F1, F2 and F3 keys
3 – Measured signal level of the frequency point indicated by the marker, in dBmV,
dBµV or dBm
4 – Status of AMP power supply (Section 4.3.8)
5 – Marker
Adjust the marker position by ◄ and ► arrows. Select frequency range scale with F1
and F2 keys from the following list:
a) . Spectrum diagram shows a span resolution of 14MHz frequency range.
b) . Spectrum diagram shows a span resolution of 28MHz frequency range.
c) . Spectrum diagram shows a span resolution of 55MHz frequency range.
d) .Spectrum diagram shows a span resolution of 110MHz frequency range.
You can return to S AN measurement mode by pressing F3 key.
AMP power supply, is controlled by pressing the key briefly (section 4.3.8).
4.3.6 MER/BER m asur m nt mod
The icon in the Main menu refers to MER/BER measurement mode. Here we
see the DVB-T signal quality table of parameters. The screen view shows in Figure 4.3.11:
Figure 4.3.11
On the screen you will see the following data:
1 – hannel number
2 – Selected frequency and frequency offset in MHz
3 – Signal modulation parameters (subcarrier modulation type and subcarriers number)
4 – MER and Margin values in dB

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5 – PerBER value
6 – PostBER value
7 – Erroneous packets after the Reed-Solomon decoder counter
8 – ommand line with commands activated by F1, F2 and F3 keys
9 – hannel name (when working with selected channel plan)
10 – Demodulator status
11 – AMP power supply status (Section 4.3.8).
When this mode is activated or a channel is selected, the Analyzer will start the input
signal synchronization process, indicated by a progress bar in position 10. The lock icon
will appear in position 10 once synchronization is achieved. Subcarrier
modulation type and subcarrier number will be presented in position 3. Shortly thereafter
MER, Margin, preBER, postBER and damaged packet measured values will appear in
positions 4, 5, 6 and 7. If the preBER value is lower than 2.0E-04 and postBER value is
lower than 1.0E-07, then the meter will display a «pass» message, otherwise if the errors
are too high a «fail» message will be displayed.
Digital TV Signal Quality measurements are BER and MER. An understanding of the
powerful error correction systems in every receiver are important if you are to get the best
out of your meter. This information can be found by careful Internet search or by reading
Digital TV titles at your local library.
If the signal level value of the selected channel is insufficient, a low level icon
will blink in position 10. hannel synchronization in this case is not possible. If signal level
is OK, but synchronization hasn’t been achieved within 5 seconds, either in-channel
modulation impairments or high noise level from the antenna system must be resolved.
To measure channel parameters, select the required channel by ◄ and ► arrows.
If no channel plan is selected, using ◄ and ► arrows you can switch to any channel in
accordance with the selected channel template (Section 4.7). Once a signal is detected,
the Analyzer will automatically determine the channel parameters: frequency offset,
spectrum inversion, subcarriers number, subcarriers modulation type, guard interval and
code rate.
If one of the channel plans has been selected, the tuning will be performed between
the digital channels of the channel plan. In this case, after entering MER/BER mode you
will see the selected channel plan name indicated by «Plan:» for a few seconds. The
channel parameters will be taken from the channel plan. If the selected channel plan does
not include any digital channels, tuning to channels will not be performed.
NOTE! When working without a channel plan selected, the Analyzer can only
synchronize a DVB-T signal with bandwidth that matches the selected channel in the
channel template (Section 4.7)
NOTE! When working with hierarchical modulated channel, postBER is measured for
low priority stream.
When you press , measurement is interrupted and the demodulator starts channel
synchronization again.
You can access other measurement modes using the function keys. F2 key activates
ONSTELLATION measurement mode (S ction 4.3.3). F3 key opens LEVEL
measurement mode (S ction 4.3.2).

16
Press F1 key to get detailed channel parameter information. The channel parameter
table shows in Figure 4.3.12.
On the screen you will see the following parameters:
a) DVB bandwidth – channel bandwidth;
b) Sp ctrum – spectrum type: inverted or normal;
c) Guard int rval – guard interval relative duration;
d) Hi rarch mod – hierarchical modulation mode;
e) Cod rat (HP) – high priority stream relative code rate;
f) Cod rat (LP) – low priority stream relative code rate (for hierarchical modulation
only);
g) TPS c ll ID – transmitter ID in hexadecimal format.
Press key to return to MER/BER measurement mode.
AMP power supply, is controlled by pressing the key briefly (section 4.3.8).
4.3.7 CONSTELLATION m asur m nt mod
This measurement mode is selected from MER/BER mode by pressing the F2 key.
This mode displays the DVB-T channel constellation diagram. See Figure 4.3.13:
Figure 4.3.13
On the screen you will see the following data:
1 – hannel number
2 – Quadrant marker
3 – hannel name (when working with selected channel plan)
4 – Demodulator status
5 – Status of AMP power supply (Section 4.3.8)
6 – MER value in dB
7 – preBER value
8 – postBER value
9 – Diagram zoom scale choosing key
When there is no synchronization with the channel, constellation diagram is empty.
After synchronization is achieved, quadrature modulation points is displayed on the
diagram. For example: for QAM64 subcarrier modulation 64 points of data subcarriers and
Figure 4.3.12

17
4 points of pilot subcarriers will be displayed. Viewing of the constellation diagram allows
to determine distortion behavior in the channel.
MER, preBER and postBER measurement values are displayed in positions 5, 6 and 7.
With , , ◄, and ► keys you can select the quadrant to be zoomed for better
resolution. hoosing with the arrow (position 2) and activate the zoom view mode by
pressing the F3 button. Press F3 button once again to return to full view mode.
Press key to return to MER/BER measurement mode (Section 4.3.6).
AMP power supply, is controlled by pressing the key briefly (section 4.3.8).
4.3.8 AMP Pow r Control
The AMP power supply is used to line power mast and distribution amplifiers, etc.
directly and autonomously from your DAT103. This simplifies testing of an antenna with a
preamplifier in line, to locate the best available signal in a deep fringe or poor signal area.
urrent is supplied to the devices via the input F-connector. AMP power supply mode
provides voltage, status information and control. Press the key briefly to access, whilst in
a measurement mode, in the process of creating a channel plan or a data logger page.
The screen view is shown in figure 4.3.14.
Figure 4.3.14
The following data is shown on the screen:
1 – Voltage, values: off, 12V, or 24V.
2 – Voltage measures the value of the voltage delivered to your AMP. If the connected
cable already carries power, the warning: V xt will appear on the screen.
3 – urrent measures the current being drawn by your AMP. If the current exceeds the
3 watt limit, an: Ov rload warning will appear on screen.
4 – command line is activated by F1 and F3 keys.
12V or 24V D can be selected by pressing ◄ or ► keys, and then F1/Apply.
Voltage and current measurements will show on screen. Press F3/Exit to exit the sub-
menu.
AMP power operates only in measurement modes. In all service modes AMP power
is off.
The Analyzer checks the input connector for presence of voltage before supplying
AMP power. If voltage is present the power supply will not turn on. When the power
supply is on, the Analyzer monitors the load current, switching supply off if the current
exceeds the allowed level. The Analyzer will make these checks and attempt to turn the
power supply on every 3 seconds.
AMP power supply status in measurement modes is indicated in the upper right-hand
corner of the screen.

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The following status indicators are provided:
- Power supply off.
- Power supply on, parameters are OK.
- Flashing with alarm sound – Power supply failure.
WARNING!!! Be careful while working with power. AMP power at the Analyzer input
can damage connected devices, unless they are designed for it. Power from the coaxial
cable can also damage the Analyzer.
4.4 Data manag r
4.4.1 G n ral information
Data manager provides automation of measurement and result recording procedures.
The Analyzer offers two tools: hannel plan manager and Data log manager. The memory
capacity allows you to save up to 16 channel plans (up to 112 channels per plan), and up
to 130 data log pages (with maximum number of channels). The DAT103 allows you to
view the saved data in stand-alone mode or by means of a computer.
4.4.2 Chann l plan manag r
The icon in the data manager menu refers to this mode. The mode allows you to
perform all the operations with channel plans (viewing, editing, deleting, and creating
channel plans). The screen view is represented in the Figure 4.4.1.
On the screen you will see the following data:
1 – table header line
2 – channel plan selected for the measurement
3 – command line with commands activated by F1, F2 and F3 functional keys
4 – scroll bar
The first column contains a plan index number. The second column is a plan name of
up to 15 characters in length. This name is assigned by the user during creating and later
can be edited by DAT Tools P software. If the channel plan is not available, it will be
indicated by *********** message. If a channel plan has been selected in Setup (Section
4.5), its name will be highlighted in inverse color (position 2).
Using , arrows you can select a channel plan from 1 to 16 index number. The
selected channel plan will be framed.
The list of available commands:
a) F1 key to view and edit the selected channel plan;
b) F2 key to delete the selected channel plan;
c) F3 key to create a new channel plan in automatic mode.
Figure 4.4.1

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4.4.2.1 Chann l plan diting
To view and edit a channel plan, select the required plan and press F1. You will see
the channel plan table. The screen view is represented in the Figure 4.4.2.
Figure 4.4.2
On the screen you will see the following data:
1 – table header line
2 – selected line
3 – command line with commands activated by F1, F2 and F3 functional keys
4 – scroll bar
The table represents a list of channels from the channel plan. The top line divides the
table into columns. The first column is the index of channel (from 1 to 112). The second
column is a channel number. The third column is the channel modulation type: A or D
(analog or digital). The fourth column is the channel name of up to 6 characters. The
bottom line shows the commands that can be activated by the functional keys. These
commands are as follows:
a) F1 key to view and edit the selected frequency point;
b) F3 key to delete the selected frequency point.
To edit a channel, select the required one by and keys (the selected line will be
framed, position 2). Then press the F1 key. The table of channel parameters will appear.
The screen view is represented in the Figure 4.4.3 (for analog channel) and in the Figure
4.4.4 (for digital channel).
Figure 4.4.3 Figure 4.4.4
There are two groups of parameters:
G n ral param t rs:
a) Chann l – channel number;
b) Typ – channel type: analog or digital;
c) Fr qu ncy – frequency of the video carrier for analog channel or central frequency
for digital channel;
d) SNR m as. - Activating of /N measurement. You can turn off the /N
measurement for a channel by setting “off” value.

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Digital chann l param t rs:
a) Band width – channel bandwidth. an be adjusted from 1000 to 8000 kHz with 125
kHz step;
b) COFDM – subcarriers modulation type. Available values: ------, QPSK, QAM16,
QAM64. The «------» symbol means modulation type different from DVB-T.
c) Sp ctrum – spectrum type: normal or inverted. Available values: norm, inv;
d) DVB bandwidth – DVB-T channel bandwidth. Available values: 6MHz, 7MHz,
8MHz;
e) Carri rs – subcarriers number. Available values: 2k, 4k, 8k;
f) Guard int rval – guard interval relative duration. Available values: 1/32, 1/16, 1/8,
1/4;
g) Hi rarch mod – hierarchical modulation type (for QAM16 and QAM64 subcarriers
modulation only). Available values: ---, α
αα
α=1, α
αα
α=2, α
αα
α=4;
h) Cod rat (HP) – high priority stream relative code rate. Available values: 1/2, 2/3,
3/4, 5/6, 7/8;
i) Cod rat (LP) – high priority stream relative code rate (for hierarchion modulation
enabled only). Available values: 1/2, 2/3, 3/4, 5/6, 7/8.
The initial values of the parameters are set during automatic detection of a channel
plan and can be manually edited by means of the channel editing function.
When you create a new channel plan (Section 4.4.2.3) channel parameters are set
according the following rules:
a) For analog channels: frequency is set to video carrier frequency of the channel.
b) For digital channels frequency is set to central frequency of the channel. If the
Analyzer is synchronized on DVB-T signal, then the real channel central frequency
will be set. hannel bandwidth is set according to channel template (Section 4.7).
DVB-T channel parameters are detected automatically.
To fine tune a parameter, select it by , keys, and then scroll to the required values
by ◄, ► keys.
To save the channel, press F2. To abort the function without saving changes, press F1
key. Always check all the parameters after the channel plan has been automatically set. It
is more convenient to determine the parameters in the spectrum measurement mode
using your P and the control software. In case of incorrect (or non-optimal) settings, fine
tune the parameter manually. Otherwise, it can lead to errors in channel parameters
measurement.
NOTE! The Analyzer can only synchronize a DVB-T signal that has bandwidth, the
same as the channel in the channel template (Section 4.7). You can tune the DVB-T
channel bandwidth manually in the channel plan.
Pressing key will confirm saving changes if any and exit the mode. You should
consider that when you save changes to or delete a channel plan, the data log pages,
which are related to the plan, becomes deleted.
To delete the selected channel, press F3 key.
4.4.2.2 Chann l plan rasing
To erase a channel plan, select the required plan and press F2. The confirmation
request dialog will appear. To abort erasing, press F3. To confirm erasing of the plan,
press F1.

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4.4.2.3 Chann l plan cr ating
To create a new channel plan in auto mode, supply signal to the RF input of the
Analyzer, select position of the plan in the table and press F3. If required, set an AMP
power supply voltage in the screen that appears, as described in section 4.3.8, and then
press F3/Exit. After the Analyzer has completed scanning all the channels of the channel
template, it will switch to channel plan editing mode (Section 4.4.2.1). Edit the channel
plan parameters if needed, and save the plan into the memory.
4.4.3 Data log manag r
4.4.3.1 G n ral information
The Data log manager enables you to measure parameters of the TV channels within a
channel plan, then to check the network parameters against the selected plan limits, and
save the results into memory. This function allows you to view the measurement results
and the errors in different parameters, download the data onto your P for further
processing and report preparation.
4.4.3.2 Data log pag s
The icon in the Data manager menu refers to this mode. This mode allows you to
perform with data log pages such operations as viewing, deleting and creating of a new
page. The screen view is represented in the Figure 4.4.5 and Figure 4.4.6.
Figure 4.4.5 Figure 4.4.6
On the screen you will see the following data:
1 – table header line
2 – selected line
3 – command line with commands activated by F1, F2 and F3 functional keys
4 – scroll bar
The top row of the table (position 1) divides the table into columns. The first column
represents the page numbers form 1 to 130. The second column is the page name. The
third column is the result of check against the plan limits (no icon – page not measured
yet, - no errors, - some errors). Figure 4.4.6 represents the list of the channel plan
names, which are related to data log pages. The bottom line (position 3) contains the list of
commands that can be activated by the functional keys. Press ◄ and ► arrows to switch
between the views of the screen. (Figure 4.4.5 & 4.4.6) Press , keys to select the
required page. The selection will be framed (position 2).
The list of available commands:
a) F1 key to view, update and check against the limit plans the selected page;
b) F2 key to delete the selected page or clear all the page;
c) F3 key to create a new data log page.
4.4.3.3 Data log pag s op ration
To view a data log page, press F1 or . Page data table will appear on the screen
(Figures 4.4.7, 4.4.8 or 4.4.9).