Tableof Contents

1705A Spectrum Monitor iii

RampGenerator 4--7.....................................................
Gain Control (SPAN/DIV) 4--7.............................................
SweepShapers 4--7......................................................
Bright--UpGenerator 4--8.................................................
Z--AxisControl 4--9.....................................................
DeflectionAmplifiers
Diagram 4 4--9..................................................
Buffers 4--9............................................................
VerticalDeflection Amplifier 4--10..........................................
HorizontalDeflection Amplifier 4--10........................................
Microprocessor
Diagram 5 4 -- 11..................................................
Microprocessor 4--11......................................................
Readout 4--12...........................................................
Trace Rotate 4--12........................................................
Graticule Lights 4--12.....................................................
Front Panel
Diagram 6 4--12..................................................
Indicators, Controls, and Switches 4--12......................................
+18 VoltSupply 4--13.....................................................
Low VoltagePower Supply
Diagram 7 4--14..................................................
Line Rectifierand Filter 4--15..............................................
Pulse Width Modulator 4--15...............................................
OutputFilters 4--16.......................................................
ErrorAmplifier 4--16.....................................................
Feedback Transformer Driver and Peak Detector 4--16...........................
Output Under-VoltageShutdown 4--16........................................
High VoltagePower Supply
Diagram 8 4--17..................................................
HV Osc and Error Amp 4 --17...............................................
Power Supply Outputs 4--18................................................
FocusAmplifier 4--18.....................................................
GridDrive Circuit 4--18...................................................
Z-AxisAmplifier 4--18....................................................
Checks and Adjustments

Section 5 Checks And Adjustments 5--1.....................................

Recommended Equipment List 5--1.............................................
Electrical Instruments 5--1................................................
AuxiliaryEquipment 5--2.................................................
PerformanceCheck 5--3......................................................
Short-Form Procedure 5--3................................................
Long Form Procedure 5--5................................................
Adjustment Procedure 5--17....................................................