Table of Contents
Model
652A
LIST OF IllUSTRATIONS
Figure
1·1.
3·1.
3·2.
4·1.
4·2.
4·3.
5·1.
5·2.
5·3.
5·4.
5· 5.
5·6.
Table
1·1.
5·1.
5·2.
;;·3.
iv
Page
Model 6 52A Test Oscillator .............. 1·0
Location and Description of Controls
and Indicators .................... 3-2
Impedance Correction Graph ............. 3-3
RC Network Characteristics .............. 4·1
R egulated Power Supply Ootput
Voltage vs. Current .. ............... 4·3
Simplified Schematic of Current
Limiting Circuitry .................. 4-3
Frequency Tests . .................... 5·1
Output Tests ....................... 5·2
Flatness Tests ....................... 5·3
Attenuator Test ..................... 5· 5
Distortion Test ...................... 5-6
Amplitude Stability Test. ............... 5·7
Figure
5·7.
5·8.
5·9.
5·10.
5·1 l.
6· l.
6·2.
6·3.
6·4.
7·1.
7·2.
LIST OF TABLES
Page
Specifications ....................... 1-2
Required Test Equipment ............... 5·0
Dial Accuracy Test ...... ............. 5·2
Typical Thermal Converter
Input/Output Change ................ 5·3
Table
5-4.
5·5.
5·6.
5·7.
5·8.
7·1.
Page
Location of Internal Adjustments .......... 5·9
Frequency Calibration ................. 5·]0
10 kHz Monitor Calibration .............. 5·1 5
Alignment Access Covers for
Models 6 51B, 2A, 3A, 4A ......... 5·21/ 5·22
Troubleshooting Tree .............. 5·23/ 5·24
Block Diagram .......... ............ 6·3
Oscillator Circuit ..................... 6· 5
Normal and Expand Monitor Circuits ..
6·6 thru 6·8
Power Supply .............. ...... 6·9/6·10
Frequency Tuning Assembly
(Mechanical Parts) .................. 7·2
Chassis Components
(Mechanical Parts) .................. 7·3
Page
Flatness Test Settings and Limits .......... 5· 5
Distortion Test ...................... 5-7
Frequency Calibration Components ........ 5-1 0
Frequency Dial Accuracy Calibration ....... 5·12
Front Panel Troubleshooting Tests ......... 5·16
Replaceable Parts .................... 7-4