User Manuals: Tektronix 1705A Spectrum Monitor

Manuals and User Guides for Tektronix 1705A Spectrum Monitor. We have 1 Tektronix 1705A Spectrum Monitor manual available for free PDF download: Instruction Manual

Tektronix 1705A Instruction Manual

Tektronix 1705A Instruction Manual (223 pages)

Spectrum Monitor(SN B040000 and Above)

Brand: Tektronix | Category: Monitor | Size: 2 MB

Table of Contents

Table of Contents
2
List of Figures
7
List of Tables
9
General Safety Summary
10
Symbols and Terms
11
Service Safety Summary
12
Preface
14
- Contacting Tektronix
  16
Section 1 Introduction
18
Section 2 Operating Instructions
38
- Front-Panel Controls and Indicators
  40
  - Filter
    40
  - Input
    40
  - Figure 2-1: 1705A Front Panel
    41
  - Sweep
    41
    
    Sweep Speed
    41
    
    Center Frequency
    41
  - Display
    42
  - Trace Rotation
    42
  - Position
    43
  - Power
    43
- Rear- Panel Connectors
  43
  - Inputs
    43
  - Power
    44
  - Figure 2-2: 1705A Rear Panel Controls and Connectors
    44
- Powering- up
  45
- Figure 2-3: 1705A Display When Powered up in L-BAND and FULL SPAN
  45
- Vertical Scales 2
  46
- Measurement Graticule
  46
  - Figure 2-4: 1705A Graticule Scale
    46
  - Table 2- 1: Db Reference
    47
  - Horizontal Scales
    48
  - MID Frequency
    49
- Center Frequency Readout
  50
- Figure 2-6: Frequency Relationship to Horizontal Graticule Scale
  50
- Figure 2-7: Center Frequency Cursor and Readout for the L-Band with FULL SPAN/DIV
  51
- Figure 2-8: 1705A CRT with the SCALE Turned down
  52
- Figure 2-9: the Setting of the HORIZONTAL POSITION Control Can Displace the Location of the Displayed Center Frequency
  52
- Customizing Frequency Readout
  53
- Locating Ku- Band Satellites
  56
  - Basic Operating Procedure
    56
  - Table 2- 3: Azimuth / Elevation Table for 21 CONUS Cities
    57
Section 3 Installation
62
Section 4 Theory of Operation
72
- Overview
  74
- Block Diagram
  74
- RF Input
  77
  - L- - Band Input
    77
  - 70 Mhz Input
    77
    
    Diagram 1
    77
  - 70 Mhz Local Oscillator
    78
- IF Amplifier
  78
  - Diagram 2
    78
  - Input Filter, Mixer, and if Amplifier
    79
  - Resolution Filter and Log Detector
    79
  - Z- - Axis Control 4
    80
- Sweep Generator Diagram
  80
  - Ramp Generator
    80
  - Gain Control (SPAN/DIV)
    80
  - Sweep Shapers
    80
  - Bright- - up Generator
    81
  - Z- - Axis Control
    82
- Deflection Amplifiers Diagram
  82
  - Buffers
    82
    
    Horizontal Deflection Amplifier 4
    83
    
    Vertical Deflection Amplifier 4
    83
    
    Microprocessor Diagram 5 4
    84
    
    Readout 4
    84
  - Microprocessor
    84
  - Indicators, Controls, and Switches 4
    85
  - Trace Rotate
    85
  - Graticule Lights
    85
- Front Panel Diagram
  85
  - Volt Supply
    86
- Low Voltage Power Supply Diagram
  87
  - Line Rectifier and Filter 4
    88
  - Pulse Width Modulator 4
    88
  - Error Amplifier
    89
  - Feedback Transformer Driver and Peak Detector 4
    89
  - Output Filters
    89
  - Output Under-Voltage Shutdown 4
    89
  - HV Osc and Error Amp
    90
- High Voltage Power Supply Diagram
  90
  - Power Supply Outputs 4
    91
  - Grid Drive Circuit 4
    91
  - Focus Amplifier 4
    91
  - Z-Axis Amplifier 4
    91
  - Section 5 Checks and Adjustments 5
    94
Checks and Adjustments
96
- Recommended Equipment List
  96
  - Electrical Instruments
    96
  - Auxiliary Equipment
    97
- Performance Check
  98
  - Short-Form Procedure
    98
  - Alternate Method
    99
  - Long Form Procedure
    100
  - Table 5- 1: Preliminary Control Settings
    101
- Adjustment Procedure
  112
  - Short- Form Procedure
    112
    
    A1 Power Supply Board
    112
    
    A3 Main Board
    112
  - Long Form Procedure
    113
  - Preliminary Setup
    113
  - Table 5- 2: Preliminary Control Settings
    113
  - Maintenance 6
    124
  - Section 6 Maintenance
    124
  - Visual Inspection 6
    126
- Preventive Maintenance
  126
  - Cleaning
    126
  - Static- Sensitive Components
    127
  - Table 6- 1: Static Susceptibility
    127
  - Performance Checks and Readjustments 6
    128
- Troubleshooting
  128
- Diagnostic Routines
  129
  - Memory Test
    130
  - DAC Test
    132
  - Foldout Pages 6
    133
  - LED and Key Test
    133
- Troubleshooting Aids
  133
  - Parts Lists 6
    134
  - General Troubleshooting Techniques
    135
  - Major Assembly Interconnection 6
    135
- Power Supply Troubleshooting Procedure
  137
  - Introduction
    137
  - Table 6- 2: Power Supply Fault Symptoms
    137
  - Low Volts Supply
    138
  - Preliminary Checks
    138
  - Table 6- 3: Low Volts Supply Voltages
    138
  - High Volts Supply
    138
    
    Output Check
    139
    
    High Volts Supply
    140
  - Table 6- 4: Control Circuit Test Points
    140
  - Table 6- 5: High Volts Supply Fault Symptoms
    141
  - Table 6- 6: High Voltage Oscillator Test Points
    142
  - Test Selected Components 6
    143
- Corrective Maintenance
  143
- Obtaining Replacement Parts
  143
- Table 6- 7: Test Selectable Components
  144
- Mechanical Disassembly/Assembly
  144
  - Bezel Removal
    144
    
    Selection Criteria
    144
    
    Graticule Light Removal and Replacement 6
    145
  - Removal of the CRT
    146
  - Replacing the CRT
    146
  - Remove the Bezel
    146
  - Removal of the Rear Panel
    147
  - Removal of Front- Panel Assembly
    147
  - Removing the L- - Band Tuner
    148
  - Removing the 70 Mhz Tuner
    149
  - Removal and Replacement of the Main Board
    149
  - Removal and Replacement of the Power Supply Board
    150
  - Removing the LNB Power Supply Board
    151
- Repackaging
  152
- Options 7
  154
Section 7 Options
154
- Options
  156
- CRT Options
  156
- Field Upgrade Kits
  156
- Table 7- 1: Power Cord Options
  156
- Ordering
  157
  - Section 8 Replaceable Electrical Parts 8
    158
  - Using the Replaceable Electrical Parts List 8
    160
  - Parts Ordering Information 8
    160
  - List of Assemblies 8
    160
  - Abbreviations 8
    160
  - Serial/Assembly No. (Column 3 and 4) 8
    161
  - Name and Description (Column 5) 8
    161
  - Tektronix Part No. (Column 2) 8
    161
  - Column Descriptions 8
    161
  - Component No. (Column 1) 8
    161
  - Diagrams/Circuit Board Illustrations
    190
  - Replaceable Mechanical Parts
    214
  - Using the Replaceable Mechanical Parts List
    216

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