Manuals / Brands / Home Audio / Stereo Amplifier / SRS Labs / Home Audio / Stereo Amplifier

SRS Labs SR510 Multiplier Adjustments, Calibration and Repair

1 73

Download 73 pages, 726.8 Kb

Calibration and Repair

This section details calibration of the instrument. Calibration should only be done by a qualified electronics technician.

********** WARNING **********

The calibration procedure requires adjusting the instrument with power applied and so there is a risk of personal injury or death by electric shock. Please be careful.

Most of the calibration parameters are determined by a computer aided calibration procedure after burn-in at the factory. These calibration parameters are quite stable and so will not need to be adjusted. Calibration parameters which may need field adjustment are detailed below.

Multiplier Adjustments

On thingmic(r)theHIG-23(e)0asbrb5 stti there ca

q(noc)-6.2ysb5prugh.f(Thi)15.8(s)]TJ 0 -1.15 TD -0.006 Tc 0.028 Tw [ stiondhesriowonoulhia(t)-28(ey)]TJ T* 0 Tw [oputput.

3(equi)15.7(r)-23.3ea on es

ll(o)-16es

g tAPnn(ec)-6(t)-28da .5nniPbrmi(at)-28 oroarhertio th .

Contents

Page Page TABLE OF CONTENTS Condensed Information SAFETY Guide to Operation Front Panel Calibration and Repair Appendix A: Noise Sources and Cures Appendix B: RS232 Appendix C: GPIB Appendix D: Program Examples LINE VOLTAGE SELECTION LINE FUSE LINE CORD OPERATE WITH COVERS IN PLACE Page General Signal Channel Reference Channel Demodulator Outputs & Interfaces Front Panel Summary Abridged Command List Configuration Switches Signal Inputs Signal Filters Sensitivity Dynamic Reserve Status Diplay Select Output Expand Offset Time Constant Noise Reference and Trigger Level Phase Controls Power Local and Remote Defaults AC Power GPIB Connector RS232 Connector Signal Monitor Output Preamp Connector AMP CAL VCO INPUT VCO RANGE FREQUENCY CAL VCO Communicating with the SR510 Command Syntax Front Panel Status LED's RS232 Echo and No Echo Operation Try-Outwith an ASCII Terminal SR510 Command List A {n} auto offset B {n} bandpass J {n1,n2,n3,n4} end-of-record K n key press L m {,n} output R {n} input trigger S {n} T m {,n} Status Byte Errors Reset Trouble-ShootingInterface Problems Common Hardware Problems include: Common Software Problems include: The SR510 with the RS232 Interface Data Communications Equipment (DCE) The SR510 with the GPIB Interface GPIB Capabilities Serial Polls and Service Requests GPIB with RS232 Echo Mode The SR510 with BOTH Interfaces The Lock-inTechnique A Measurement Example Understanding the Specifications Shielding and Ground Loops Page Page SR510 Block Diagram The Signal Channel Reference Channel Phase Sensitive Detector DC Amplifier and System Gain A Microprocessor Based Design Introduction Signal Amplifier Current Amplifier Bandpass Filter Reference Oscillator Demodulator and Low Pass Amplifier Analog Output and Control Expand Front Panel Microprocessor Control RS232 Interface GPIB Interface Power Supplies Internal Oscillator Multiplier Adjustments Replacing the Front-EndTransistors Non-EssentialNoise Sources Capacitive Coupling Inductive Coupling Page CASE 1 - The Simplest Configuration CASE 2 - RS232 with Control Lines Baud Rate Stop Bits Parity Final Tip Voltage Levels Bus Description Appendix D: Program Examples Program Example 1: IBM PC, Basic, via RS232 Program Example 2: IBM PC, Microsoft Fortran v3.3, via RS232 Page Program Example 3: IBM PC, Microsoft C v3.0, via RS232 Page Program Example 4: IBM PC,Microsoft Basic, via GPIB Page Program Example 5: HP85 via GPIB Documentation Main Assembly PCB Parts List Page Page Page Page Page Page Page Page Page Page Page Page Page Internal Oscillator PCB Parts List Miscellaneous Parts List Front Panel Parts List