9.565 Radyne-DMD2050

This page describes the device driver and the device window for the Radyne DMD 2050 Satellite Modem.

Device window pages

The following table shows which device window pages are available with this individual device type. Tool-bar functions not mentioned here are described at the general description of device windows .

• --- The IF parameters (frequency, level, etc.) and some global modem settings.
• --- The modulator settings, transmit clocking.
• --- The demodulator settings, receive clocking, doppler buffer.
• --- The Automatic Uplink Power Control settings.
• --- The data interface settings.
• --- The faults page.
• --- The device info page.
• --- The maintenance page. The configuration parameters described below are set at this page.

Configuration parameters

At the maintenance page of the device window there are a couple of configuration parameters which must be set to make the software talk to the DMD2050.

• parameter --- description

• address --- The SNMP address specification for the device. The full address specification consists of the following fields:aaa.bbb.ccc.ddd:pppp read-community write-community

  • aaa.bbb.ccc.ddd --- The IP address of the device in 'dotted quad' notation. This field is mandatory.
  • pppp --- The IP port number where the device accepts SNMP requests. The port number may be omitted, the driver uses the standard port 161 in this case.
  • read-community --- The SNMP read community name. This must match the read community expected by the device.
  • write-community --- The SNMP write community name. This must match the write community expected by the device. The write community name may be omitted, the driver uses the read community name for both, read and write in this case. If both community names are missing, the driver uses 'public' as a default for read and write community.

• tx.loFreq --- Sets the TX LO frequency (MHz) used to convert the transmitted signal from L-band to RF. Be sure to set this to 0 if the modem is used with 70MHz IF.

• tx.sideBand --- Selects the side band used with the L-band to RF conversion. Select "HIGH-SIDE" if the carrier frequency is above the LO, "LOW-SIDE" if below.

• tx.lband.10MHz --- Switches a 10MHz reference signal on or off at the L-band output.

• tx.lband.voltageEnable --- Switches the BUC supply voltage on or off at the L-band output.

• rx.loFreq --- Sets the RX LO frequency (MHz) used to convert the received signal to L-band. Be sure to set this to 0 if the modem is used with 70MHz IF.

• rx.sideBand --- Selects the side band used with the RF to L-band down conversion. Select "HIGH-SIDE" if the carrier frequency is above the LO, "LOW-SIDE" if below.

• rx.lband.10MHz --- Switches a 10MHz reference signal on or off at the L-band input.

• rx.lband.voltageEnable --- Switches the LNB supply voltage on or off at the L-band input.

• rx.lband.voltageSelect --- Selects the supply voltage to be applied at the L-band input. (13/15/18/20V)

Remarks

• The LO frequency calculation (L-band to RF an vice versa) is done in the sat-nms device driver, not in the device itself. As a result, the modem itself will show L-band frequency at the front panel, not the RF frequency displayed in the sat-nms software. The LO frequency and sideband selection configuration parameters are stored on the VLC, not in the device.
• The tx.modemType and rx.modemType parameters in fact are sort of macros, setting the modem to default values suitable for the selected operation mode. The sat-nms driver does not store these parameters in preset to avoid any interference between the initializations done by these commands and the parameters set by the preset.

Variables defined by this device driver