Planar IT-081 User manual

IТ-081
TV LEVEL METER
OPERATING MANUAL

Revision 1.1 of April 4, 2016
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TABLE OF CONTENTS
1. PRODUCT FAMILY GENERAL INFORMATION .............................................................. 4
2. GENERAL DESCRIPTION AND PRINCIPLE OF OPERATION....................................... 5
2.1. Introduction.................................................................................................................................................................................5
2.2. Safety Precautions.......................................................................................................................................................................5
2.3. Function......................................................................................................................................................................................5
2.4. Environmental Conditions...........................................................................................................................................................6
2.5. Package Contents........................................................................................................................................................................6
2.6. Specifications..............................................................................................................................................................................7
2.7. Design and Operation Overview.................................................................................................................................................8
2.7.1. Principle of Operation...................................................................................................................................................8
2.7.2. Block Diagram..............................................................................................................................................................8
2.7.3. Component Arrangement..............................................................................................................................................9
3. PREPARATION FOR OPERATION....................................................................................... 9
4. OPERATION PROCEDURE............................................................................................. 9
4.1. Controls and Indicators...............................................................................................................................................................9
4.2. Preparation for Measurements...................................................................................................................................................10
4.3. Measurement Procedure............................................................................................................................................................12
4.3.1. General Information....................................................................................................................................................12
4.3.2. Level Measurement Mode ..........................................................................................................................................13
4.3.3. Spectrum Measurement Mode ....................................................................................................................................14
4.3.4. Scan Measurement Mode............................................................................................................................................15
4.4. Data Logger Function ...............................................................................................................................................................16
4.4.1. General Information....................................................................................................................................................16
4.4.2. Channel Plans .............................................................................................................................................................17
4.4.3. Limit Plans..................................................................................................................................................................19
4.4.4. Channel Data Logger..................................................................................................................................................20
4.4.5. Spectrum Data Logger................................................................................................................................................22
4.4.6. Memory Manager........................................................................................................................................................23
4.5. Self-Test and Configuration Modes ..........................................................................................................................................24
4.5.1. Self-Test......................................................................................................................................................................24
4.5.2. Setting Regional Parameters.......................................................................................................................................25
4.5.3. User Interface Setting .................................................................................................................................................25
4.5.4. Identification Data Readout........................................................................................................................................26
4.6. Operation Controlled by PC......................................................................................................................................................27
4.6.1. General Information....................................................................................................................................................27
4.6.2. PC Configuration Requirements.................................................................................................................................27
4.6.3. Software Installation...................................................................................................................................................27
4.6.4. Starting the Program...................................................................................................................................................27
4.7. Updating Software ....................................................................................................................................................................28
4.7.1. General Information....................................................................................................................................................28
4.7.2. Updating Software via PC...........................................................................................................................................28
4.7.3. Updating Software from Removable Module .............................................................................................................29
4.8. Battery Operation......................................................................................................................................................................29
5. MAINTENANCE.............................................................................................................. 30
6. TROUBLESHOOTING.................................................................................................... 30
7. STORAGE ......................................................................................................................31
8. TRANSPORTATION....................................................................................................... 31
9. LABELING ...................................................................................................................... 31
10. WARRANTY INFORMATION ....................................................................................... 31
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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 color 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, analog
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 DVB-S Signal Analyzer (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-083 DVB-S/S2 Signal Analyzer (MC-083 module plugged-in), 950 to 2150 MHz
range. Measurement of BER and MER values for digital satellite (QPSK/8PSK DVB-S/S2).
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
+20 dBm range and wavelengths 1310 and 1550 nm.
IT-087 DVB-C Signal Analyzer (MC-087 module plugged-in), 45 to
865 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 DVB-T Signal Analyzer (MC-088 module plugged-in), 45 to
865 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.
IT-089 DVB-T/T2 Signal Analyzer (MC-089 module plugged-in), 45 to
900 MHz range. Support of DVB-T/T2 modulation. Measurements for analog channels:
carrier level, C/N and V/A ratios and for digital channels: channel power, MER, BER,
constellation and echo diagrams. Powering of antenna amplifier.
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)
Keypad...........................................................................................................made of rubber
Display ....................................................... color graphic LCD 320x240 pixels with backlight
Power supply
internal........................................... NiMH AA rechargeable batteries, 2100 mAh (6 pcs)
external..................................................................................... 12V/0.8A mains adapter
PC compatible interface.......................................................................................... USB port
Operating temperature.....................................................................................−10 to +40 °C
User software update... through USB 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-081 TV Level Meter (Meter).
The IT-081 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 Meter allows measurement of channel power and parameters of TV
signal.
The Meter can be used both in laboratory, powered by an external power source, and
in field, powered by batteries. The Meter can also operate as a part of Return Path Test and
Measurement Set.
The reliability of the IT-081 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;
- LCD - Liquid Crystal Display;
- ADC - Analog-to-Digital Converter;
- IF - Intermediate Frequency.
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
Meter.
WARNING Only trained service personnel aware of the hazards involved should perform
repair on the Meter.
CAUTION Tuning the Meter and replacement of the components that influence the
accuracy of measurements without service personnel is strictly prohibited, since the
components used in the Meter are purpose-made and their replacement will result in
inaccurate operation of the Meter. To exclude the possibility of mechanical damage to the
IT-081, the instructions regarding the storage and transportation (see Sections 7 and 8) of
the Meter must be observed.
2.3. Function
The IT-081 TV Level Meter belongs to the family of IT-08 measurement instruments
and is intended for measurement of the video carrier level of standard TV signal.
The Meter offers the following measurement modes for analog channels: 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.
The IT-081 can be connected to a personal computer to access additional modes.
The IT-081 operates in spectrum analyzer mode displayed on the built-in LCD. The Meter
allows measuring direct and alternating voltage of the remote power supply of the TV and
broadcasting distribution networks.
The appearance of the Meter and its components are displayed in figures 2.1 and
2.2.
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Figure 2.1 Figure 2.2
This Operating Manual is made in accordance with the hardware version 02.80.01 for
MB-08 Base Unit and software version 1.2.x.x/1.2.x.x for IT-081.
2.4. Environmental 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).
2.5. Package Contents
The Meter package includes:
a) MB-08 Base Unit.....................................................1 pc;
b) MC-081 Removable Module ...................................1 pc;
c) Carrying Case.........................................................1 pc;
d) NiMH, AA Batteries.................................................6 pcs;
e) TAV03-1201200 Mains Adapter .............................1 pc;
f) “F”-”F” Adapter........................................................1 pc;
g) USB Cable.............................................................1 pc;
h) Rubber Holster........................................................1 pc;
i) Operating Manual ...................................................1 pc.
The Removable Module (if supplied separately) package includes:
a) МС-081 Removable Module ..................................1pc;
b) “F”-”F” Adapter........................................................1pc;
c) Operating Manual ...................................................1pc.
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2.6. Specifications
Operating frequency range ...............................................................................5 to 900 MHz
Resolution.................................................................................................................125 kHz
Channel allocation standard .................................... China, PAL B/G, PAL Ireland, PAL UK,
.................................................................................. Secam D/K, France, NCTA, Australian
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
Input mismatch attenuation
- Input attenuator off ............................................................................................ 14 dB
- Input attenuator on ............................................................................................ 18 dB
Level measurement range with manual attenuator setting
- Input attenuator off ............................................................................... 30 to 90 dBμV
- Input attenuator 20 dB ........................................................................ 50 to 110 dBμV
- Input attenuator 40 dB ........................................................................ 70 to 126 dBμV
Measurement level resolution ..................................................................................... 0.1 dB
Accuracy within 30-126 dBµV level range .................................................................±1.5 dB
Accuracy at operating temperature............................................................................±2.2 dB
Measurement channel passband for -3 dB level...............................................230 ± 60 kHz
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-081 can be powered by
- AC circuit with 110-240 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
Shipping dimensions................................................................................... 400x300x90 mm
Weight.......................................................................................................................... 0.6 kg
Weight in package ....................................................................................................... 2.2 kg
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2.7. Design and Operation Overview
2.7.1. Principle of Operation
The TV Level Meter is a super heterodyne receiver with triple frequency conversion
(auto or manual frequency tuning). Channel power is measured by means of analog-to-
digital converter (ADC) 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 Meter or on PC.
The view displayed on the screen in the spectrum analyzer mode is the 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.
2.7.2. Block Diagram
The block diagram of IT-081 is shown in figure 2.3.
Figure 2.3
After the Low-Pass Filter (LPF), the input signal if necessary is reduced by the two
Attenuators (A1) and (A2). Then it is transformed into the first IF signal by the Mixer (M1)
and adjustable Local Oscillator (LO1). The first IF is 1216 MHz. Then the signal is passed
through the Bandpass Filter (BPF1). Local Oscillator (LO1) is implemented according to
circuit of the frequency synthesizer with phase lock loop.
The signal of the first IF is converted by the 1178 MHz Local Oscillator (LO2) and the
Mixer (M2) to the second IF, and is further filtered at 38 MHz frequency by BPF2. The
signal of the second IF is converted by the 27.3 MHz Local Oscillator (LO3) and the Mixer
(M3) to the third IF, and further filtered at 10.7 MHz frequency by BPF3, which defines the
receiver frequency band.
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Logarithmic Gain Amplifier Limiter (LGAL) performs logarithmation and signal
detection.
Peak Detector (PD) allows measuring the video carrier level by means of Analog-to-
Digital Converter (ADC). The digital code of the input signal peak level logarithm is defined
as real value and is corrected in accordance with the calibration matrix of the Control Unit
(CU) microcontroller.
The Control Unit receives the commands from the user entered via Keypad,
processes the data, displays them on the LCD, and also controls the operation with
external PC.
The nonvolatile memory (NVRAM) stores the calibration coefficients set by the
manufacturer, Data Logger records, and firmware utilities.
The Power Supply (PS) forms the required voltages either from batteries or from an
external power source.
In the sound check unit the signal limited by FM is transmitted from the LGAL output
to Frequency Decoder (FD). Then the low frequency signal from the FD output is amplified
in the Low Frequency Amplifier (LFA) and goes to the built-in speaker.
2.7.3. Component Arrangement
The IT-081 is made up of two components. Both modules are contained within plastic
shockproof Sectional housings. MC-081 Removable Module is plugged in the Base Unit
and connected to it via specific connector.
The front panel of the Base Unit contains a keypad and a color graphical display. The
right panel has a USB port and an external power source connector. The Removable
Module connector is located on the back panel. The Removable Module has a 75-Ohm
input “F” connector and the connector for connection to the Base Unit.
3. PREPARATION FOR OPERATION
Perform external examination to make sure your IT-081 is free from any visible
mechanical damage.
Upon receipt of the package, check the availability of the items contained in it against
the list provided (see Section 2.5).
If the IT-081 has been kept in the environment other than the rated operating
conditions, leave your Meter in facilities with normal operating conditions for at least 2
hours prior to operation.
4. OPERATION PROCEDURE
4.1. Controls and Indicators
The location of controls, indicators and connectors is shown in figures 2.1 and 2.2.
These elements have the following functions:
а) F1, F2, F3, F4 functional keys are intended for enabling the commands
corresponding to the icons shown on the screen of the IT-081;
b) key toggles powering of the Meter on/off. Lighting of the key indicates the
power supply from an external power source;
c) AUX key opens the menu with additional set of functions for F1, F2, F3, and
F4 keys;
d) MENU/ENTER key selects the current command or returns to the previous
menu level;
e) , , ◄, and ►arrows allow editing in the current operation mode;
f) alphanumeric keypad allows entering text or numeric data;
g) 12VDC connector provides connection to an external power source;
h) USB port provides connection to computer;
i) INPUT connector is for the test signal input, “F”-type connector.
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4.2. Preparation for Measurements
Before you start to operate your IT-081 make sure to carefully read this Operating
Manual as well as to inspect the location of the controls and indicators of the Meter (see
Section 4.1).
To prepare your Meter for operation with the external power source proceed as
follows:
a) unlock the Carrying Case and take the Meter and the Mains Adapter out;
b) connect the MC-081 Removable Module to the MB-08 Base Unit, if they were
stored separately;
c) connect the Mains Adapter to the connector located on the side panel of the
IT-081 and then to the power source;
d) press and hold down the key until the LCD backlight turns on.
To prepare your IT-081 for operation in stand-alone mode, powered by the batteries,
proceed as follows:
а) unlock the Carrying Case and take the IT-081 out;
b) connect the MC-081 Removable Module to MB-08 Base Unit, if they were
stored separately;
c) press and hold down the key until the LCD backlight turns on.
If the Removable Module software version is other than the software installed, the IT-
081 will start the program installation process automatically once the Meter is switched on.
The loading process is indicated by corresponding message on the Meter screen.
CAUTION Do not switch the power off while the software is being loaded! This may lead to
the loss of capability of loading the software onto your Meter without the use of a PC.
If the Removable Module software version is the same as the installed software, the
IT-081 will start to check the Removable Module after the power has been switched on.
After successful check, the following message (see figure 4.1) will appear on the screen:
Figure 4.1
The screen will show the name and type of the Meter. After approximately 1 second,
either the main mode-selection menu (main menu) will appear on the screen (see figure
4.2), or the last previously used measurement mode, if the quick access option has been
enabled (Section 4.5.3).
Select the operating mode using the interactive menu on the the LCD screen. This
menu represents a number of icons, each icon referring to a certain mode. The view of the
main menu is shown in figure 4.2.
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