User Manual DEV 2190
Copyright DEV Systemtechnik GmbH 2009-2017 17
The advanced control of the LNB power supply and of the current monitoring
feature is accessible via Web Interface (chapters 5.4.3 & 5.4.4.2) and via SNMP
(chapters 5.5.4.3.9.8…5.5.4.3.9.11).
Note:
Even though the input port of an amplifier module is short circuit protected it is
recommended to turn off the LNB power while working on the RF cabling to
avoid damages.
It is not recommended to supply a current sink (e.g. an LNB) with the LNB
power supply of more than one module (i.e. parallel connection). Due to
variations of parts, the current load for the modules will be not balanced and
thus the current monitoring will not work properly.
With the "Bias" push button (5) the LNB power supply can be turned on in VL
mode (13 V, 0 Hz), only. The other LNB power supply modes are available via
Web Interface (chapter 5.4.4.2) and via SNMP (chapter 5.5.4.3.9.8).
The output gain level and the slope (or tilt) control (only available with installed
Option 25, chapter 3.1.8) of an amplifier module can be adjusted in Local Mode
via Web Interface (chapter 5.4.4.2) and in Remote Mode via SNMP
(chapters 5.5.4.3.9.13 & 5.5.4.3.9.15).
After the boot phase of the DEV 2190 and after an operation mode change, all
LEDs of the installed amplifier modules are blinking shortly as a receipt.
3.2.5 Redundancy Switch Modules
As explained in chapters 3.1.1 & 3.1.7 redundancy switch modules are installed at
the front side for a DEV 2190 with applied redundant amplifier options. There are
no elements at the front side of the redundancy switch module, which do require
further explanations.
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