BK Precision SEFRAM 7861 Manual Download Page 5

 

 

 

 

 

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       Once the satellite adjusted, it is possible to see its spectrum.  

 
 
- Press the Spectrum key  :           . The abscissa axis represents the frequencies and the ordinate axis the reception levels (in dBµV). 

The spectrum displayed depends on the selected band and polarity. 
 

Band 

Low : 10 650MHz - 11 700MHz 

High : 11 700MHZ - 12 750MHz 

 

Polarity 

Horizontal 

Vertical 

 

Notes : 

- A transponder contains several. 

          

- The transponder width changes : it can be 27MHz, 36MHz or 72MHz.  

 
 

Spectrum analyser – High band – Vertical polarity  

 

 

 
 
 

Inactive transponder 

If a single transponder doesn’t synchronise (quality=0), it is possible that its frequency is not valid anymore (in satellite, 
the  used  frequencies  are  regularly  modified).  Use  the  following  sensitive  keys  to  replace  the  non  valid  transponders  by 
active transponders. 
 

 

The  transponders  of  the  different  satellites  are  listed  on  websites  that  are  regularly  updated,  like 

http://en.kingofsat.net/

For the example with ASTRA 19.2°E 

http://en.kingofsat.net/pos-19.2E.php

. 

 

Transponder 

setting  

Colour 

 

Level : 

Red

 

Frequency : 

Blue

 

Band/Polarity 

 

High band=Hi 

Low band=Lo 

 

Vertical polarity=V 

Horizontal polarity=H 

Carrier :  this 

transponder 

broadcasts TV 

programs 

Cursor that 

indicates the 

position 

Transponder menu 

access 

 

Saved 

transponder 

Summary of Contents for SEFRAM 7861

Page 1: ...n system correctly with a universal LNB equipped satellite dish 1 Configuration Operating the instrument step by step Plug the LNB cable into the appliance Switch the field strength meter on by pressi...

Page 2: ...tal vertical polarity high low band The Thresholds allow defining the limits for the level measurement Their setups have already been installed but it is possible to modify them reserved to advanced u...

Page 3: ...lody beeps ring out The more they are closer the more the reception quality is good Perfect the adjustment of the satellite dish to obtain the best quality If the appliance is not synchronised on any...

Page 4: ...um reception quality for a polarity without interference with the opposite polarity Observe the quality bargraph Adjust the head until you obtain a maximum quality Microwave head LNB Lightly turn the...

Page 5: ...ingle transponder doesn t synchronise quality 0 it is possible that its frequency is not valid anymore in satellite the used frequencies are regularly modified Use the following sensitive keys to repl...

Page 6: ...PEG2 NIT table The informations displayed at the acquisition end can be erroneous The following error messages can also appear Impossibility locking on the transponder Satellite identification failed...

Page 7: ...reception quality Error rates To operate the error rate measurements Press for the second time the Measurements key A new window appears on the display DVB S BER MER DVB S BER MER window Analyse the m...

Page 8: ...the program can t appear NIT Conditional access A transponder contains many TV programs To access to a channel that is broadcasting in clear on the transponder press the sensitive key Serv This button...

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