Norsat O3b 5W BUC User Manual

Page 5

Advertising
background image

Rev. 1.0

7005STC-O3B Series

DES007565

5

1.2.1

IF unit

IF unit amplifies the transmission signal from a remote modem and delivers it to the Up-converter unit.


1.2.2

LO unit

LO unit generates two local signals to drive two LO ports of the up-converter using double

conversion structure.

1.2.3

Up-converter unit

Up-Converter converts the IF signal (7005STC-O3B-A:1052-1788 MHz, 7005STC-O3B-B: 972-

1871 MHz) to RF signal (7005STC-O3B-A: 27.652-28.388 GHz, 7005STC-O3B-B: 28.172-29.071

GHz) and also filters out unwanted spurious and harmonics in front of SSPA. The BUC uses a

double-conversion technology to achieve better performance and cost- effective design.

1.2.4

SSPA unit

The main function of SSPA is to boost up the transmit power of the input signal to an expected level.


1.2.5

DC M&C unit

This board includes a DC/DC converter, regulators, and a EMI/EMC filter to make all kinds of DC

voltages required in the BUC. It also contains a Monitor and Control (M&C) function to monitor and

control the BUC, and communicate with a remote modem unit. The key parts for the M&C function

are a microprocessor and communication ICs for RS-232 and Ethernet.


1.3

IMPORTANT PRECAUTIONS

Read all the following instructions prior to using the BUC.


1.3.1

Reading Introduction

There is a potential safety risk unless appropriate precautions are taken while working with the

BUC. All the precaution and danger notes must be carefully read before beginning to use the

BUC.

1.3.2

ESD Protection

The BUC contains elements sensitive to electrostatic discharges (ESD). It is important that the staff

is ground- connected while they are working with them.

1.3.3

Washing

Do not use liquid washing products or aerosols. Only use a damp cloth for cleaning.

Advertising