Tableof Contents

ii 1705A Spectrum Monitor

VerticalScales 2--7......................................................
HorizontalScales 2--9....................................................
Center Frequency Readout 2--11................................................
Customizing Frequency Readout 2--14...........................................
Turning On or OffReadout 2--14............................................
Changing Readout Position 2--14............................................
Changing Readout Frequency 2--15..........................................
TestMode 2--17..........................................................
LocatingKu--BandSatellites 2--17..............................................
Basic Operating Procedure 2--17............................................
Installation

Section 3 Installation 3--1.................................................

Packaging 3--1..........................................................
Electrical Installation 3--1....................................................
Power Source 3--1.......................................................
Mains Frequency and VoltageRanges 3--1....................................
+18 VoltsFor Block Down Converter 3--1....................................
OperatingOptions 3--2...................................................
MechanicalInstallation 3--2...................................................
Cabinet Options 3--2.....................................................
Cabinetizing 3--4........................................................
RackAdapter 3--5.......................................................
CustomInstallation 3--8..................................................
Theory of Operation

Section 4 Theory of Operation 4--1.........................................

Overview 4--1..............................................................
Block Diagram 4--1.........................................................
RF Input Circuits (Diagram 1) 4--1..........................................
IFAmplifier Circuits (Diagram 2) 4--2.......................................
SweepGenerator Circuits (Diagram 3) 4--2...................................
DeflectionAmplifiers (Diagram 4) 4--3......................................
Microprocessor (Diagr am 5) 4--3...........................................
Front Panel (Diagram 6) 4--3..............................................
Low VoltagePower Supply (Diagram 7) 4--3..................................
High Voltage(Diagram 8) 4 --4.............................................
RF Input
Diagram 1 4--4..................................................
L--BandInput 4--4.......................................................
70 MHz Input 4 --4.......................................................
70MHz Local Oscillator 4--5..............................................
IFAmplifier
Diagram 2 4--5..................................................
2ndLocal Oscillator 4--5..................................................
Input Filter,Mixer, and IF Amplifier 4--6.....................................
ResolutionFilter and Log Detector 4--6......................................
SweepGenerator
Diagram 3 4--7..................................................