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UniCable LNB Functions<br />
When a UniCable LNB is first connected, there will be no signal. This is because in the<br />
Spectrum mode, no UniCable commands are issued. Command the UniCable LNB by<br />
switching to the Digital mode and back to the Spectrum mode and it will show a<br />
spectrum. (Turning on and off the LNB 13/18 or the LNB 22kHz will also command a<br />
UniCable frequency.) The span of the spectrum can be set to either 250MHz or<br />
1231MHz (the maximum or minimum) by pressing the keypad ‘Span’. The Marker<br />
frequency shows the IF frequency of the User Band. The translated UniCable signal will<br />
be at the chosen User Band and about 100MHz wide. For the UniCable LNB, the LNB<br />
13V/18V and the LNB 22kHz signal represent the Polarisation and the Band and are not<br />
sent to the UniCable LNB. In the Digital mode, the frequency shown is the UniCable<br />
commanded frequency.<br />
Remember that the displayed UniCable band is reflected in frequency about the User<br />
Band frequency as shown in the example below. For more details see Appendix D.<br />
User Band 1<br />
10936 MHz<br />
10906 MHz<br />
10878 MHz<br />
22
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