Calian SatService sat-nms LF20, User Manual

Page: 31 / 44

PD
This (green) LED shows the state of the RX Pin diode. The LED turns on, if
the optical input is in range.
PS
The (green) PS-LED displays the power supply state of the card. The LED is
on, if the power supply of the card is working.
Max
The (yellow) Max-LED turns on, if the RF output level is above the
recommended level.
Min
The (yellow) Max-LED turns on, if the RF output level is below the
recommended level.
You have the possibility to change the following parameters:
Parameter Description
Gain
An integrated attenuator makes is possible to attenuate the RF-input-signal
in 1dB-steps from 0 to 31dB. This switch has 16 steps. Use the 0..15 switch
to select the attenuation range to 0-15dB or 16-31dB.
0..15
By setting this switch, you define the range of attenuation, that can be set by
the gain switch. In the 0 position, it is possible to set the attenuator from 0-
15dB, in the 15 position, the attenuation value can be set from 16-31dB.
RM/LC
This DIP-switch defines, if the card is controlled remote RM or local LC . If the
switch is in the LC position, it is not possible, to change the parameters of
this card via remote Interface (IP, RS232, SNMP) or via the front panel
keyboard of the LFTX/RX chassis.
Additionally you can measure the following parameters:
Parameter Description
TPout -
10dB
The testport gives you the opportunity to measure the RF-Level on the Front
panel. The Signal, that you can measure here is about 10dB lower than the
output signal on the back side of the LFTX/RX chassis. This difference may
vary due to optional configurations integrated to the sat-nms LFTX/RX
Frame (e.g. redundancy switching, 1:4 splitter, 50/75 converter)
PWR Here you can measure the level of the RF power. The scaling is 50mV/dB
GND Reference Ground for the PWR, LDC and LDP measurement.
PDP Here you can measure the optical power. 100mV relates to 100uW.
3.5.3 Local operation LFSW Card
The following picture shows you the front view of a LFSW card.
The following indicator LED's are located on the cards front panel:
(C) 2021, SatService GmbH www.satnms.com LF20-UM-2107 Page 30/43