Calian SatService sat-nms LF20, User Manual

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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.
0..DC
If your card is equipped with this functionality, you can switch here the 15VDC
on and off to supply a LNC connected to the RF in of this slot. In the 0
position of the switch, 15VDC is off, in the DC position, the 15VDC is on.
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.
LDC
Here you can measure the current consumption of the laser diode. 100mV
relates to 10mA.
LDP Here you can measure the optical power. 100mV relates to 100uW.
3.5.2 Local operation LFRX Card
The following picture shows you the front view of a LFRX card.
Depending on the card configuration, the 'Opto IN' connector is an E2000 or a FC/APC
connector. Connect here the optical fibre to transmit the optical signal.
The following indicator LED's are located on the cards front panel:
Parameter Description
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