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Summary of Contents for emitor Combolook Color HD
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Combolook Color User Manual Combolook Color Sjöviksbacken 14, 4 tr SE-117 43 Stockholm, Sweden Phone: +46 (0)8 775 00 01 Fax: +46 (0)8 775 00 06 www.emitor.se...
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All information in this publication is based on the latest product information available at the time of printing. Emitor AB reserves the right to make changes at any time without notice and without incurring any obligation. No part of this publication may be reproduced without written permission.
Overview The Emitor Combolook Color is a Swedish designed Satellite TV/CATV instrument and spectrum analyzer. The unit was designed for the exact alignment and adjustment of satellite dishes, terrestrial antennas, as well as trouble-shooting and quality control of MDU systems layout including CATV networking.
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The user memory positions can save spectrum displays, analog channels, digital channels and Saved spectrum positions can be mixed simultaneously with an actual reading for easy comparison and control of signal-levels. Measurements on group of channels can be made with up to 10 frequencies simultaneously with automatic polarization and band selection.
Unpacking Unpack the instrument and check that the following items are included: 1. Combolook Color instrument. 2. Nylon carrying case with shoulder strap. 3. Power supply and charger 110-230VAC /14 VDC, center pin positive 4. Auto Adapter cord (Car charger) 12V. Operating Controls The side view of the Combolook Color is shown below with the operating...
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RF Input from LNB) RF Input from LNB) RF Input from LNB) RF Input from LNB) This is the LNB input. It supplies 13V/18V and the 22kHz signal when required. Audio Volume) Audio Volume) Audio Volume) Audio Volume) The audio volume can be adjusted for either the Digital or Analog reception.
The LCD window shows the current functions available using the keypad or remote. For each function, the keypad number is shown to the left. Also shown is the current status of the LNB, the knob operation mode, and the battery/external power. Shown below is the LCD display in the Spectrum mode.
Remote Control Power Not used Used same as keypad entry Exit Used for keypad ‘#’ Open TV which is 22kHz or Radio control to select band channel Next channel Previous channel...
Spectrum Operation (Satellite) The Spectrum Mode is displayed when the instrument is turned on in Satellite mode. With a dish and LNB connected, it will show a display similar to that above. The spectrum is displayed with the Start frequency at the top of the screen and the Stop frequency at the bottom.
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Picture) Picture) Allows the display of Analog or Digital channels. (see Analog Picture Mode page Picture) Picture) 16 or Digital Picture Mode page 14) Digital) Changes to Digital mode at frequency of marker. Digital) Digital) Digital) Span Min/Max) Changes the spectrum bandwidth fro 250MHz to 1231MHz. Span Min/Max) Span Min/Max) Span Min/Max)
Digital Mode (Satellite) This shows a typical constellation from a DVB-S QPSK signal. The frequency and offset are shown below the constellation diagram and the measured symbol rate is shown below the frequency. The two thermometer bars show the BER and SNR of the signal. The SNR thermometer increases from right to left and the BER thermometer gets smaller from right to left, so that the best signal is shown by a longer white bar.
Digital Mode Functions (Satellite) Search +/ Search +/ Search +/ Search +/- - - - ) ) ) ) A signal search can be initiated by using the keypad ‘1 Search +’ to search with increasing frequency or ‘2 Search –‘ with decreasing frequency. The search mode moves to the next peak in the spectrum and attempts a lock for DVB-S QPSK, DVB-S2 QPSK and DVB-S2 8PSK signals.
Digital Picture Mode (Satellite) From the Digital display, when the input frequency is locked and the modulation type displayed, the SDT data can be examined using the Channels function with keypad ‘4 Channels’. This shows a list of the services on the transponder. Encrypted channels are shown in RED and cannot be selected.
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Display which is available using the keypad ‘4 SNR Info’ function or the keypad ‘5 Pic Info’ functions.
Analog Picture Mode (Satellite) The Analog Picture mode is selected from the Spectrum Mode by selecting ‘1 Picture’ and then ‘2 Analog’ using the keypad. The knob tunes the desired frequency which is displayed at the bottom of the LCD and ‘0 13/18V’ and ‘# 22kHz’ can be used from the keypad to change polarisation and band.
Memory Functions (Satellite) There are four different user memory types in the Combolook Color instrument. They are divided according to the type of data storage required. Each memory area is chosen automatically depending on the type of data. Spectrum Memory: There are 100 memory positions reserved for User data of the spectrum waveforms.
DiSEqC Functions (Satellite) The Combolook Color instrument supports all usual DiSEqC commands for the DiSEqC specifications 1.0, 1.1 and also supports the Goto X function for easy positioner movement. The DiSEqC commands can be accessed from several menus for convenience. From the Spectrum Mode: keypad ‘5 DiSEqC’...
Setup (Satellite) The Setup menu contains the functions which are used infrequently. LNBLO LNBLO LNBLO LNBLO) ) ) ) The LNB type can be selected in this menu. The LNB local oscillator down converts the satellite frequency (10670MHz to 12750MHz) to the intermediate frequency ( 920MHz to 2150MHz).
Special Functions (Satellite) MaxHold) MaxHold) This sets the measurement of signal level to hold and MaxHold) MaxHold) display the maximum received values. Once enabled, the measurements will remain in MaxHold until expressly disabled. Refmrkr) The Reference marker allows a second marker to be Refmrkr) Refmrkr) Refmrkr)
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Atten) Atten) The 15dB attenuator can be inserted or disabled from this menu. Atten) Atten) 13/18V) 13/18V) The 13V/18V LNB voltage can be changed at this menu for convenience. 13/18V) 13/18V) 22kHz) The 22kHz LNB signal can be changed at this menu for convenience. 22kHz) 22kHz) 22kHz)
UniCable LNB Functions (Satellite) When a UniCable LNB is first connected, there will be no signal. This is because in the Spectrum mode, no UniCable commands are issued. Command the UniCable LNB by switching to the Digital mode and back to the Spectrum mode and it will show a spectrum.
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The UniCable test (Spec -> UniCable -> Uni Test) allows full testing of a UniCable LNB. This test takes about 20 seconds to check each User Band. During the test, the four User Bands are identified and any offset found is used for further UniCable tuning. User Band 1 1210 MHz User Band 2...
Spectrum Operation (TV ) When the Combolook Color is first turned on in TV mode, the spectrum is displayed. Upon connection of an aerial or CATV source, it will show a display similar to that above. This portion of a spectrum shows a digital TV signal and an analog TV signal at the marker frequency.
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Usr S Usr S Usr S Usr Span) pan) pan) Sets the spectrum display to a user defined portion of the spectrum. The User pan) span is set up using the Memory Function (TV) described on page 27 . Span 13 (or Span 900) Span 13 (or Span 900) Span 13 (or Span 900) Span 13 (or Span 900) This toggles the spectrum span to 13MHz (or 900MHz) and...
Analog Picture Mode (TV) Knob Function Frequency Channel Attenuation Signal Level The knob has several functions in the Picture mode. The Function of the knob is shown at the top of the LCD screen. When the function is “FREQ”, turning the knob adjusts the frequency which is shown on the LCD.
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Sound) Sound) Sound) Sound) This menu changes the picture carrier to audio carrier spacing. Settings are 5.5 MHz (PAL B/G) 6.0 MHz (PAL I) and 6.5 MHz (PAL D/K). Man Att Man Att Man Att Man Att) This allows the insertion of attenuation from 0dB to 45dB in the signal path to observe the picture quality.
Memory Operation (TV) Memory storage exists in several different forms in the TV Mode for the Combolook. The memory can be used to save and retrieve Spectrum samples, User Span settings, and TV Picture tuning favourite settings. The memory positions for Spectrum, User Span, and Picture memory are in different areas.
Digital Picture (TV) The DVB-T module is controlled by the keypad with the keys representing screen directions. (Alternatively, it can be controlled by the remote handset.) When the DVB-T module is first started, the initial parameters will need to be set. The menu language can be set to English, Swedish, Finnish, French, German, Danish, Romanian, Dutch, Polish, Slovenski, Spanish, Latvian, Russian, or Indonesian.
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The Search can be done automatically for all frequencies (50.5MHz-858MHz) or by using the up, down, left and right buttons can be made on a specific channel. The Frequency for the channel is shown but cannot be adjusted. The bandwidth default is set at 7MHz. Change this if the DVB-T signal has a different bandwidth.
Setup (TV) The setup menu contains the items which are infrequently used. Lcd) Lcd) Lcd) Lcd) The LCD contrast can be adjusted and the LCD backlight enabled or disabled. Display Display) ) ) ) The scan cursor in the TV spectrum can be enabled or Display Display disabled.
Signal-to-Noise Ratio Measurements (TV) The Combolook Color is capable of performing measurements of the Signal/Noise or Picture-Carrier/Audio-Carrier ratio. To perform these measurements: • Put the marker on any signal carrier and ”zoom in” with the ”Span 13 Span 13 Span 13 Span 13 ”...
Channel Power Measurement (TV) The digital output-level (in dB) of digital transponders (such as in digital terrestrial transmissions) can be measured for saved spectrum samples. (If the spectrum is not saved, then save the spectrum to a memory location by “Memory - >...
Using PC to transfer transponder data Satellite transponder data can be loaded from the instrument to and from a PC for easy changes. The Windows PC program used is chedit.exe. From the File Menu, a channel file can be loaded from the Combolook, edited and saved back to the Combolook. Also channel files can be loaded and saved on the PC for backup and easy updates of channel files.
The RS232 cable to be used is supplied as part of the kit with the Combolook Color HD. Some laptops do not have an RS232 connection, but a USB to RS232 adapter can be purchased at low cost.
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Normally, the firmware will be in the same direction as “FDLDVB.exe” but if not, you can navigate to the correct directory and select the firmware file. Once the file is selected, the firmware loading will take about 10 minutes and then the Firmware Downloader program will display “Download Complete”.
Appendix A – Universal LNB Primer The LNB (low noise block amplifier) has evolved since its early introduction in Satellite broadcasting. Signals broadcast from satellites are 10600 MHz to 12700 MHz for Ku band and 3000 MHz to 4500 MHz for C band. Because the losses in coax are quite high for these frequencies, the satellite signal is first downconverted to a more manageable 950 MHz to 2150 MHz for transmission from the dish to the receiver.
Appendix B – DiSEqC Primer About DiSEqC About DiSEqC About DiSEqC About DiSEqC DiSEqC is an acronym for “Digital Satellite Equipment Control” and is achieved using the 22kHz signalling tone. The 22 kHz signal is imposed on the LNB DC voltage of 13V or 18V at a level of 0.65V p-p.
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Set East: 0xe0, 0x31, 0x66 Clr Lim: 0xe0, 0x31, 0x63 Set West: 0xe0, 0x31, 0x67 Goto Pos: 0xe0, 0x31, 0x6b, <Position Number 1 to 31> Save Pos: 0xe0, 0x31, 0x6a, <Position Number 1 to 31> Goto X: 0xe0, 0x31, 0x6e, <Movement High Byte>, <Movement Low Byte> For the full DiSEqC specifications, see http://www.eutelsat.com/satellites/4_5_5.html)
Appendix C DVB-S and DVB-S2 Primer DVB-S and DVB-S2 both use phase shift keying to digitally modulate a carrier. Quadrature phase shift keying is used in both and the digital data is encoded as a 90 degree phase shift in the signal. This gives 4 possible states for each sampling interval. The sampling interval is called the Symbol Rate and each state of 2 bits is a Symbol.
Appendix D UniCable Primer UniCable or SCIF (Single Cable Interface) is a method of translating Satellite frequencies from the LNB to the user. It is intended to allow multiple receivers to share the same coaxial cable. With a standard Universal LNB, with Horizontal and Vertical polarity and low and high band, there are four frequency ranges that can be selected from the LNB by using the 13V/18V and the 22kHz signal.
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UniCable Commands: UniCable Commands: (only the 5 byte commands are shown) UniCable Commands: UniCable Commands: ODU_Power_OFF: (0xe0 0x00 0x5a D1 0x00) Turn power off for the selected User Band. D1 is defined as bit 5,6,7 select the User Band and bit 0,1,2,3,4 = 0; ODU_UBxSignal_ON: (0xe0 0x00 0x5b 0x00 0x00) Generate an RF tone at the centre of each User Band.
Appendix F – DVB-T Principles DVB-T uses OFDM (orthogonal frequency division multiplex) modulation. This type of modulation, which uses a large number of sub-carriers, delivers a robust signal that has the ability to deal with very severe channel conditions. The DVB-T standard has technical characteristics that make it a very flexible system: 3 modulation options (QPSK, 16QAM, 64QAM), 5 different FEC rates, 4 Guard Interval options, 2k or 8k carriers (actually this is 1705 carriers or 6817 carriers), 6, 7 or 8MHz channel bandwidths...
Appendix G- Maintenance The instrument is equipped with a rechargeable battery and it is important that the battery is maintained. Recharging should be done using the included car adaptor or external power supply. (110-220V/14V DC, center-pin positive and chassis earth) Please note that instrument can be operated, for shorter periods of time, by the external power supply, however, the Combolook Color is not made for permanent operation...
Appendix H – Specification Satellite TV (uses SAT Satellite TV (uses SAT Satellite TV (uses SAT Satellite TV (uses SAT- - - - IN F IN F IN F IN F- - - - Connector) Connector) Connector) Connector) Input frequency: 920-2150MHz Min Input Level: About 35 dBuV (noiselevel).
Glossary 8PSK 8PSK 8PSK 8PSK: (8 Phase Shift Keying). This is the modulation type that is used for DVB-S2 also called HD. In 8PSK, a symbol has 8 states or 3 bits. On the constellation diagram, an 8PSK signal either be “Normal”, with the eight points around a circle centred on the origins or “Rotated”...
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MaxHold: MaxHold: MaxHold: MaxHold: In the Analog Mode, this can be used to “remember” the highest peak of the RF signal. MER: MER: MER: MER: (Modulation Error ratio) This is usually expressed in dB. It is calculated from the constellation pattern and represents how close the I and Q decision points are to the ideal position.
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Do you have a question about the Combolook Color HD and is the answer not in the manual?
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