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送信機 Calian SatService sat-nms LFTRXのPDF ユーザーマニュアルをオンラインで閲覧またはダウンロードできます。Calian SatService sat-nms LFTRX 13 ページ。 Optical receiver/transmitter

maximum levels (see

In the standard configuration you should have approx. 4dB gain over the whole optical link. Due

to variance of laser- and receive-diodes you might have some gain-spreading between different

links.

When connecting an occasional use antenna, point your dish to the satellite with the highest total

power. This is to ensure not to generate a maximum level fault during normal operation.

3 Operation

The sat-nms LFTRX Optical Link is designed to be operated as stand-alone unit. The DC-

Interface connector allows to read out some basic alarm and and analog monitoring voltage. See

chapter

DC and data connector

The sat-nms LFTRX Optical Link is designed to be operated as stand-alone unit. The DC-

Interface connector allows to read out some basic alarm and and analog monitoring voltage. See

chapter

DC and data connector

The sat-nms L-Band optical transmitters and receivers were developed to cover all applications

in the field of satellite communication, satellite ground stations, VSAT and cable networks.

While the fibre optical links where designed by SatService GmbH mainly for the transmission of

the satellite L-Band frequency band (950 to 2150MHz) also a broadband version from 50MHz to

2150MHz is available. So this link type can also be used to transmit the traditional 70 or 140MHz

IF bands of satellite ground stations and a microwave link. But also other terrestrial applications

are feasible like the transmission of GSM signals in the 800 and 1800MHz frequency bands.

sat-nms LFTRX-L --- 950 to 2150MHz

sat-nms LFTRX-B --- 50 to 2150MHz

sat-nms LFTRX-10 --- 10MHz only

The sat-nms LFTRX optical link is a broadband device and transmits transparently the complete

RF spectrum from one site to the other. All modulation formats, whether they are analog or digital,

can be transmitted transparently. The RF signal is directly modulated on to a high performance

laser diode and adds no phase noise or frequency instability to the original signal. The result is a

very good signal quality.

Due to the very stable design of the optical transmitter and receiver electronics there is no need

for an Automatic Gain Control (AGC) within the circuits. So the link is compared to other vendor's

solution really transparent.

For the optical interface SatService provides FC/APC connectors from Diamond or Huber &

Specifications

on last page of this document)!

for a detailed describtion of the signals.

www.satnms.com

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