Kathrein UFD 515 manual Oscillator frequency L.O

Page 55

Setting system parameters

HotBird systems.

The other basic settings are shown in the illustration.

Oscillator frequency L.O.

Satellite receiver systems consist of the parabolic antenna (satellite dish) with the actual receiving system mounted in front of it (LNB – Low Noise Block Converter or LNC - Low Noise Converter), which converts the RF signals of the satellite to a lower frequency, so it can be processed by a satellite receiver.

The satellite transmission frequencies are within the following ranges:

10.7…11.7 GHz

Low-band ( Low-band / analogue transmission)

11.7…12.75 GHz

High-band (High-band / digital transmission)

 

(valid for ASTRA satellites at 19,2° E)

The reception frequency of the receiver, however, is in the range from 950 to 2150 MHz. The high frequencies are therefore converted with the aid of the oscillator frequency (LO frequency / LO = Local Oscillator of the LNB) to a lower frequency. Various oscillator frequencies are used for this purpose depending on the satellite frequency range and the type of system.

For ASTRA and Eutelsat receiver systems, this frequency is normally

9.75GHz (9750 MHz) for the lower frequency range (low-band) and

10.6GHz (10600 MHz) for the upper frequency (high-band). Older receiver systems still operate in the low-band range with a 10 GHz oscillator frequency.

The receiver generates its required frequency by subtracting the oscillator frequency from the satellite transmission frequency stored for each channel. You only need to set the oscillator frequencies, which your receiver system actually uses. Therefore, before changing the LO frequency, make sure that this is at all necessary.

The oscillator frequencies shown at the top of the picture are factory settings.

Changing the oscillator frequency

Move over to the right-hand side in the LNB configuration menu by

pressing ￿ and the setting for LO High will be highlighted in colour. Using the number buttons, you can now enter a frequency matching your system. The same also applies for the LO Low setting. Press the

￿￿buttons to go to this setting.

Exit the menu by pressing ￿ 4 times. The receiver will simultaneously confirm that the values have been saved.

If a setting is incorrect, you will see the following message on the screen :

Bad or no signal

Operation

Factory setting is "on."

Normally, the power supply should be switched on.

For communal or party systems, you must check whether the supply voltage must be switched off!

55

Image 55
Contents Operating manual Page Important notes PrefaceContents Transponder selection DiSEqC Repeat Safety instructions Mains voltage Place of installationVentilation Humidity, exposure to sunlight, heatView of front panel Controls, displays and connectionsView of rear panel Remote control handset keys Command of remote control Menu concept Operating instructionsButton functions Alphanumeric entries Language selection- OSD Connection and start-up Connecting receiverPreconditions for receiving signals Presetting of receiving systemAudio connection Inserting batteries in the remote controlLNB supply voltage TV and video recorder connectionFactory setting of receiver First time installationFirst steps Important screen displays On screen displays / OSDHelp function TV channel identifier Error messageRadio channel identifier Teletext Programme list Radio/TVSelecting a TV programme Programme selectionReception status Programme selection Selecting a TV programme by number entry Switching to a radio programmeReception status radio Selecting a radio programme by number entry Observe the operating manual of your Pay-TV provider Common InterfaceCommon Interface Common Interface Timer settings VPS signal Setting the volume Sound settingsStereo and two-channel sound reproduction Switching off sound Selecting programmes last received Programme listFavourite programmes Programme list Programme list Programme list Programme list Search programme alphabetically Sorting programmes Deleting programme Manually adding programmes Be careful when deleting programmesProgramme list Adding and removing satellites Setting up a satelliteRemoving a satellite Entering a satellite nameEPG Programme overviewEPG timer programming Factory setting PasswordEntering a password Password Parental lock Password Operation from front panel Backup operationSetting system parameters System information System parametersScreen Local time/TimerTV type Picture formatLNB configuration Installation menuMode Oscillator frequency L.O Standby Antenna rotor / Positioner DiSEqC Antenna settingsSatellite search Setting system parameters Transponder selection TP set-up/searchAll new programmes are added to the existing programme list DiSEqC UFO Set-up KH signalTone burst Pre-programming is not deleted with Reset Recording Video recorder connectionPlayback Software and programme list update Software and programme list update „Display info Transferring operating software Data transfer from receiver to receiverPreparation Transferring programme listsTechnical annex Technical featuresRF features Technical dataSwitch-over VHS/S-VHS AccessoriesScart socket assignments Connection arrangement Connection examplesTechnical annex DiSEqC Short technical lexiconTransponder GlossarySatellite ServiceDiSEqC menu ZWT Technische Änderungen vorbehalten