User Manual DEV 2190
Copyright DEV Systemtechnik GmbH 2009-2017 49
5.4.4.2 Amplifier
This kind of panel is available for each amplifier module installed in the chassis.
It consists of two sections:
1) In the upper "Status" section first the "Port Number" is shown as a reference to
the index of the SNMP .portTable (please refer to chapter 5.5.4.3.9) and if port
specific error messages are to be identified within the Events Tab (chapter
5.4.5). In the line below, the "Module Type" is listed (here: "DEV 11-0096").
Next, the "RF Level" status (red/green) and the measured level (in [dBm]) are
shown. Finally, since amplifier modules provide LNB power with current moni-
toring, the "LNB Power Level" status (green, red, or gray) and the measured
current (in [mA] or "off") are indicated.
2) The "Setup" section permits changes on the parameters of the related amplifier
module. Note that after settings have been altered within this section in Local
Mode (!), a click on the button is necessary to apply the changes:
• "Gain" and -with applied Option 25- "Slope" can be adjusted roughly by
clicking into the corresponding control bar, or in discrete steps using the
or buttons. The current target setting is displayed via the
(blue/green) colored bar and via a numerical value next to the button.
• The "RF Threshold" for the RF level monitoring functionality can be
adjusted within a certain range.
• If LNB power is required at the RF input of an amplifier module, the drop
down list "LNB Power Enable" needs to be operated. The default is "Off", to
turn on the LNB power, select one of the polarization/band entries:
"HL" (horizontal low: 18 V, 0 Hz), "HH" (horizontal high: 18 V, 22 kHz),
"VL" (vertical low: 13 V, 0 Hz), or "VH" (vertical high: 13 V, 22 kHz).
The current monitoring interval for the current monitoring functionality is
defined by "LNB Power Upper Limit" and "LNB Power Lower Limit". The
values of these entries may be altered within certain ranges.
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