HP 334A - Section I General Information

Model 333A/334A
TABLE OF CONTENTS
Table of Contents
Section Page
I GENERAL INFORMATION ........ 1-3
1.1 . Description ............ 1-3
1.6
. Accessory Features ........ 1-3
1.8 . Option ............... 1-3
1.10
. Instrument Identification ..... 1-3
Section
11 INSTALLATION ..............
2 . 1 . Introduction ............
2.3 . Inspection .............
2.5 . Power Requirements .......
2.7 . Three-Conductor Power Cable . .
2 . 10 . Installation ............
2.12 . Bench Installation .......
2.14 . Rack Installation ........
2.16 . Repackaging For Shipment ....
page
2-1
2-1
2-1
2-1
2-1
2-1
2-1
2-1
2-1
Section -ge
III OPERATINGINSTRUCTIONS ...... 3-1
3-
1 . Introduction ............ 3 . 1
3.4 . Controls and Indicators ...... 3-1
3.6
. General Operating Information . . 3-1
3.7
. Input Connections ....... 3-1
3.9
. Voltmeter Characteristic$ . . 3-1
3.12
. Output Terminals ....... 3-2
3.14
. Operating Procedures. ...... 3-2
3.15
. Instrument Turn.On ...... 3-2
3.16
. Adjustment of Meter
Mechanical Zero
....... 3-2
3.18
. DistortionMeasurement ... 3-2
3.21 .
RF Carriers (334A only) ... 3-3
3.22
. Voltage Measurement ..... 3-3
3.23
. Meter Indication ....... 3-4
3.27
. Use of Output Terminals ... 3-4
3.30
. 333A1334A with Option 01 . . 3-4
3.32
. Manual Nulling ........ 3-4
Section
Page
IV THEORY OF OPERATION ........ 4-1
4.1
. Overall Description ........ 4-1
4.3
. Block Diagram Description .... 4-1
4.4 . Distortion Measuring
4.8
.
Carriers. .......... 4-1
4.10
. Voltmeter Operation ..... 4-1
4.12
. Detailed Circuit Description ... 4-1
4.13
. Impedance Converter Circuit . 4-1
4.17
. Rejection Amplifier Circuit . . 4-2
4.39
. High Pass Filter ....... 4-5
4.41
. Meter Amplifier ....... 4-5
4.49
. Power Supply Circuit ..... 4-7
4.54
. RF Detector Circuit (334Aonly) 4-7
Section
Page
5.1
. Introduction ............ 5-1
5.3
. Required Test Equipment ..... 5-1
Distortion Measurement
of AM
Operation .......... 4 . 1
Distortion Measurement in AM
V MAINTENANCE ............. 5-1
Section Page
V MAINTENANCE (Cont’d) ......... 5-1
5.5
. Performance Checks ....... 5-1
5.9
. Fundamental Rejection Check . 5-1
5.10
. Second Harmonic Accuracy . . 5-2
5.11
. Instrument Induced
Distortion Check
....... 5-2
5.12
. Frequency Calibration Accuracy
Check
............. 5-3
5.13
. Automatic Nulling Mode Check 5-4
5.14
. Input Impedance Check .... 5-4
5.17
. Minimum Input Level Check . . 5-5
5.18
. DC Isolation Check ...... 5-5
5.19
. Voltmeter Accuracy and
Frequency Response Check
5-6
5.20
. High Pass Filter Check .... 5-7
5.21
. Residual Noise Check ..... 5-7
5.22
. AM Detector Check (Model
5.23
. Adjustment and Calibration
Procedure
............ 5-8
5.26
.
Adjustments ......... 5-8
5.27 . Voltmeter Gain Adjustments . 5-8
5.28
. Voltmeter Frequency Response
Adjustment
......... 5-10
5.29
. Bridge Balance Adjustment . . 5-10
5.30
. Sensitivity SwitchCalibration . 5-11
5.31
.
Components ......... 5-11
334Aonly)
.......... 5-7
Power Supply and Bias
Adjustment of Factory Selected
5.33
. Troubleshooting Procedure .... 5-11
5 .38 . Troubleshooting Voltmeter
Function
........... 5 . 12
5.40 . Troubleshooting Distortion
Function
........... 5-14
5.45
. Photoresistor Check and
Adjustment (A6V1 thruA6V5)
. 5-15
5.49
. Servicing Etched Circuit
Boards
........... 5-16
5.52
. Servicing Rotary Switches ... 5-16
5 -54
*
Converter ........ 5-16
Section Page
VI REPLACEABLE PARTS
......... 6-1
6.1
. Introduction ............ 6-1
6.4
. Ordering Information ....... 6-1
6.6
. Non-Listed Parts ......... 6-1
Isolating the Impedance
Section Page
M CIRCUITDIAGRAMS ........... 7-1
7- 1 . Introduction ............ 7-1
APpen&
A CODE LIST OF MANUFACTURERS
B SALES AND SERVICE OFFICES
C MANUAL BACKDATING CHANGES
iii