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ii
1705A Spectrum Monitor
Vertical Scales 2--7......................................................
Horizontal Scales 2--9....................................................
Center Frequency Readout 2--11................................................
Customizing Frequency Readout 2--14...........................................
Turning On or Off Readout 2--14............................................
Changing Readout Position 2--14............................................
Changing Readout Frequency 2--15..........................................
Test Mode 2--17..........................................................
Locating Ku--Band Satellites 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 Voltage Ranges 3--1....................................
+18 Volts For Bl ock Down Conve rter 3--1....................................
Operating Options 3--2...................................................
Mechanical Installation 3--2...................................................
Cabinet Options 3--2.....................................................
Cabinetizing 3--4........................................................
Rack Adapter 3--5.......................................................
Custom Installation 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..........................................
IF Amplifier Circuits (Diagram 2) 4--2.......................................
Sweep Generator Circuits (Diagram 3) 4--2...................................
Deflection Amplifiers (Diagram 4) 4--3......................................
Microprocessor (Diagram 5) 4--3...........................................
Front Panel (Diagram 6) 4--3..............................................
Low Voltage Power Supply (Diagram 7) 4--3..................................
High Voltage (Diagram 8) 4--4.............................................
RF Input
Diagram 1 4--4..................................................
L--Band Input 4--4.......................................................
70 MHz Input 4--4.......................................................
70 MHz Local Oscillator 4--5..............................................
IF Amplifier
Diagram 2 4--5..................................................
2nd Local Oscillator 4--5..................................................
Input Filter, Mixer, and IF Amplifier 4--6.....................................
Resolution Filter and Log Detector 4--6......................................
Sweep Generator
Diagram 3 4--7..................................................