1.136 Comtech-CDD564

This page describes the device driver and the device window for the Comtech CDD564AL device.

It supports four RF SAT inputs and support one decoder for each physical input signal. The driver only supports the receive parameter settings of each channel. Parameters for transmitting the received and demodulated data over ethernet have to be manually set in the web-interface.

The driver was tested with the following sw releases:

• 1.5.6 (release 24.07.2019)

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 .

• --- Contains the parameters for each of the four decoders that correspond to the RX1 to RX4 inputs. Lets the user set frequency, data-/symbolrate, spectrum, modulation, rolloff etc. Also displays the "locked" state for each demodulator.
• --- Contains the LNB control for each of the four RF inputs. Lets the user set the DC voltage to the LNBs and optionally enable a 10MHz multiplexed reference signal. Also displays the actual voltage and current.
• --- Displays the receive parameters for each channel such as signal level, eb/n0, frequency shift and BER.
• --- 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 unit.

• 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.

• dem.1.rxAGC --- Set the automatic gain control of LNB 1 to "active" or "masked".

• dem.1.lnb --- Set the LNB 1 to "active" or "masked".

• dem.1.EbNo --- Set Eb/No for channel 1 to "active" or "masked".

• dem.2.rxAGC --- Set the automatic gain control of LNB 2 to "active" or "masked".

• dem.2.lnb --- Set the LNB 2 to "active" or "masked".

• dem.2.EbNo --- Set Eb/No for channel 2 to "active" or "masked".

• dem.3.rxAGC --- Set the automatic gain control of LNB 3 to "active" or "masked".

• dem.3.lnb --- Set the LNB 3 to "active" or "masked".

• dem.3.EbNo --- Set Eb/No for channel 3 to "active" or "masked".

• dem.4.rxAGC --- Set the automatic gain control of LNB 4 to "active" or "masked".

• dem.4.lnb --- Set the LNB 4 to "active" or "masked".

• dem.4.EbNo --- Set Eb/No for channel 4 to "active" or "masked".

Variables defined by this device driver