SRS PRS10 Handleiding


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Version 1.5 ( , 2015)Dec. 21
Model PRS10
Rubidium Frequency Standard
Operation and Service Manual
1290-D Reamwood Avenue
Sunnyvale, California 94089
Phone: (408) 744-9040 • Fax: (408) 744-9049
email: info@thinkSRS.com • www.thinkSRS.com
Copyright © 2002 , 2015, 2013 by Stanford Research Systems, Inc.
All Rights Reserved.
PRS10 Rubidium Frequency Standard
Table of Contents 1
PRS10 Rubidium Frequency Standard
Introduction 3
Specifications 4
Abridged Command List 5
Theoretical Overview 8
Rubidium Frequency Standards 8
PRS10 Overview 11
Block Diagram 11
Ovenized Oscillator 11
Frequency Synthesizer 11
Physics Package 13
Control Algorithm 13
Initial Locking 14
Locking to External 1pps 14
CPU Tasks 18
Applications 19
Interface Connector 19
Configuration Notes 19
Hardware Notes 20
Operating Temperature 21
Frequency Adjustment 21
RS-232 Instruction Set 22
Syntax 22
Initialization 22
Frequency Lock-loop Parameters 24
Frequency Synthesizer Control 28
Magnetic field Control 29
Frequency Control 31
One pulse per second control 31
1PPS Locking Control 33
Analog Control 36
Analog Test Voltages 37
Status Bytes 38
Calibration Procedures 41
Circuit Description 42
Schematic RB_F1 (sheet 1 of 6) 42
Input Power 42
Voltage Reference 42
Crystal Oscillator 42
Crystal Heater 44
Schematic RB_F2 (Sheet 2 of 6) 44
Temperature Control Servos 44
Conversion to 10MHz TTL 45
Photocell Amplifier 46
Signal Filters for Oscillator Control 4 7
Analog Multiplexers 47
Schematic RB_F3 (Sheet 3 of 6) 48
Microcontroller 48
RS-232 50
12 Bit A/D Conversion 50
12-Bit Digital to Analog Converters 50
Magnetic Field Control 50
Phase Modulation 51
1PPS Output 51
1PPS Input Time-Tag 51
Schematic RB_F4. (Sheet 4 of 6) 52
High Resolution, Low Phase Noise,
RF Synthesizer 52
RF Output Amplifier 53
Step Recovery Diode Matching 53
Analog Control 54
Schematic RB_F5 (Sheet 5 of 6) 54
Power Supply, Lamp Control and
1PPS Timing PCB 54
Linear Power Supplies 54
Lamp Regulator 55
1PPS Input Time-Tag 55
1PPS Output Pulse Delay 56
Baseplate Temperature Sensor 57
Schematic RB_F6 (Sheet 6 of 6) 57
Resonance Cell and Lamp Heaters 57
Resonance Cell 57
Discharge Lamp 57
Schematic RB_F7 (Sheet 1 of 1) 59
Connector Interface Board 59
Appendix A: Frequency Synthesizer
Table 60
Appendix B: Precision Frequency
Measurement 62
Set-up for an SR620 63
Four input connections: 63


Product specificaties

Merk: SRS
Categorie: Niet gecategoriseerd
Model: PRS10

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