2.3 Configuring the Receiver

This chapter gives a short overview about some configuration parameters you want to set after you have installed the sat-nms LBRX beacon receiver. A complete reference of all available setup parameters is given in chapter 3 Operation / Remote Control .

To verify / set these parameters prior to the installation of the LBRX-1MT, connect the device to a 24V power supply and to the COM port of a PC by means of a straight-through 9-pin cable. Start you favourite terminal emulation program and configure the COM port to 19200-N-8-1.

LNB LO Frequencies

The receiver lets you enter the receiver frequency in terms of the RF frequency at the antenna. The receiver is prepared to manage separate LO frequencies for a lower and a upper band LNB. The setup parameter you have to configure are:

• High band LO frequency, Query: lof2=?
• Low band LO frequency, Query: lof1=?
• Band edge, Query: edge=? If your antenna provides only one single conversion frequency, set this value for both LO frequency parameters and set the band edge to zero. The receiver also supports applications where the LO frequency is above RF receive frequency. In this case, enter the LO frequencies as negative values.

LNB Supply Voltage

The receiver is able to supply a LNB through the L-band cable. Set the 'LNB voltage' parameter to the appropriate value. The special value 'AUTO' enables the LNB supply voltage and switches between 14V and 18V following the receive polarisation you set. Query: lnbv=? . To switch off the LNB supply voltage, type lnbv=OFF .

LNB Frequency Band Selection

For antennas switching between frequency bands with a 22kHz tone controlled switch the receiver is able to generate the 22kHz tone either permanently or automatically depending on the receive frequency. Set the '22kHz tone' parameter to one of the settings OFF, ON or AUTO. Query: ln22=?