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097-58503-13
Issue 2: Jul 00
58503B
GPS Time and Frequency
Reference Receiver
and
59551A
GPS Measurements
Synchronization Module
Operating and Programming
Guide
Copyright © 2000 Symmetricom, Inc. All rights reserved. Printed in U.S.A.
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Warning Symbols That May Be Used In This Book This guide describes how to operate the Symmetri- com 58503B GPS Time and Frequency Reference Re- ceiver and 59551A GPS Measurements Synchronization Module via the RS-232C port(s). The information in this guide applies to instruments having the number prefix listed below, unless ac- Instruction manual symbol; the product will be marked with this symbol when it is necessary for the user to refer to the companied by a “Manual Updating Changes” pack-
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Contents In This Guide 1 Front and Rear Panels at a Glance 58503B Front Panel at a Glance 2 58503B/Option 001 Front-Panel Display/Keypad at a Glance 3 58503B Rear Panel at a Glance 4 59551A Front Panel at a Glance 5 59551A Rear Panel at a Glance 6 2 Serial Interface Capabilities Chapter Contents 2 About the RS-232C Serial Port(s) 3 PORT 1 Rear-Panel RS-232C Serial Port 3 PORT 2 Front-Panel RS-232C Serial Port (59551A Only) 4 Connecting a Computer or Modem 5 To Connect the GPS Receiver to a PC o
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Contents Reference Outputs 13 ACQUISITION Section of the Status Screen 14 ACQUISITION Line 14 Tracking, Not Tracking 14 Time 16 Position 17 HEALTH MONITOR Section of the Screen 18 The Receiver Status Screen at a Glance 20 4 Command Quick Reference Chapter Contents 2 An Introduction to GPS Receiver Commands 4 SCPI Conformance Information 4 Command Syntax Conventions 4 Command Presentation 4 GPS Satellite Acquisition 5 1 PPS Reference Synchronization 7 Operating Status 8 System Time 10 Programmabl
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Contents GPS Satellite Acquisition 7 1 PPS Reference Synchronization 27 Operating Status 39 System Time 73 Programmable Pulse Output (59551A Only) 83 Event Time Stamping (59551A Only) 89 Serial Interface Communication 100 Receiver Initialization 109 Receiver Identification/Upgrade 113 A Error Messages Introduction 2 Reading an Error 2 Error Queue 3 Error Types 4 No Error 4 Syntactic Error 4 Semantic Error 5 Hardware/Firmware Error 5 Query Error 5 General Error Behavior 6 List of Errors 7 B Comma
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Contents Using Multiple Commands 7 Program Messages 7 Program Message Syntax 7 Elements of Response Messages 9 Response Messages 9 Response Message Syntax 9 Response Formats 10 Reference Documentation 12 C Receiver Firmware Installation Downloading New Firmware Using SatStat Program 2 D Performance Tests Introduction 2 Operational Verification 2 Complete Performance Tests 2 Test Record 2 Equipment Required 3 Before You Start 4 Operational Verification 5 Introduction 5 Power-Up Procedure 5 10 MHz
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Contents Specifications Tested 22 Procedure 22 Test 3: 1 PPS Time Accuracy (Locked) 24 Test 4: 10 MHz Frequency Stability (Time Domain) and Phase Noise (Frequency Domain) Measurements 24 Frequency Stability (Time Domain) 24 Phase Noise (Frequency Domain) 24 58503B Performance Test Record 26 59551A Performance Test Record 27 E 58503B Specifications Specifications and Characteristics 2 GPS Receiver Features 2 Other Information 5 Options and Accessories 5 F 59551A Specifications Specifications and
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Contents viii Operating and Programming Guide
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In This Guide Chapter 1, “Front and Rear Panels at a Glance,” provides overview of the Receiver’s indicators, inputs, and outputs. Chapter 2, “Serial Interface Capabilities,” provides RS-232 serial interface port connection and configuration instructions. Chapter 3, “Visual User Interface,” which is subtitled “Using the Receiver Status Screen,” provides information on how to use the Receiver Status screen and the SatStat program. An illustrated foldout of the Receiver Status screen, which i
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In This Guide Appendix E, “58503B Specifications,” lists the product specifications and characteristics. Appendix F, “59551A Specifications,” lists the product specifications and characteristics. Command Index, lists all of the commands alphabetically and provides page references. General Index x Operating and Programming Guide
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1 Front and Rear Panels at a Glance
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Chapter 1 Front and Rear Panels at a Glance 58503B Front Panel at a Glance 58503B Front Panel at a Glance 1 When the Power indicator 3 When the Holdover indicator illuminates, it indicates that the illuminates, it indicates that the proper input power is supplied to the Receiver is NOT locked to the GPS Receiver. signal. The Receiver is keeping time based on the internal reference oscillator signal. The internal 2 When the GPS Lock indicator reference oscillator will determine illumi
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Chapter 1 Front and Rear Panels at a Glance 58503B/Option 001 Front-Panel Display/Keypad at a Glance 58503B/Option 001 Front-Panel Display/Keypad at a Glance 1 An alphanumeric display for displaying time, position (i.e., longitude, latitude, and altitude), and Receiver status. The display is a highly visible twelve-character vacuum-fluorescent display. 2 Status LED indicators: When the Power indicator is illuminated, it indicates that input power is supplied to the Receiver. When the GPS Lo
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Chapter 1 Front and Rear Panels at a Glance 58503B Rear Panel at a Glance 58503B Rear Panel at a Glance 1 ANT N-type (female) connector for Option 002 1PP2S GPS Antenna connection. (One-Pulse-Per-Two-Seconds) connector for outputting a pulse every other second, synchronized to 2 PORT 1 RS-232C, DB-25 (female) the even seconds in GPS time. serial interface port for remote Pulses occur on even-numbered control, monitoring, and seconds (i.e., 2 seconds, 4 seconds, downloading of the Re
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Chapter 1 Front and Rear Panels at a Glance 59551A Front Panel at a Glance 59551A Front Panel at a Glance 1 When the Power indicator 4 When the Alarm indicator illuminates, it indicates that the illuminates, it indicates that the proper input power is supplied to Module has detected an internal the Module. condition that requires attention. 2 When the GPS Lock indicator 5 PORT 2 RS-232C, DE-9S (female) illuminates, it indicates that the serial interface port for local Module is rec
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Chapter 1 Front and Rear Panels at a Glance 59551A Rear Panel at a Glance 59551A Rear Panel at a Glance 1 1PPS (One-Pulse-Per-Second) 5 Alarm BITE (Built-In Test connector for outputting a Equipment) output for external continuous one pulse per second devices (such as red light, bell, or signal. horn) to indicate that the Module has detected an internal condition 2 Programmable Pulse output connector that requires attention. The relay for outputting pulses at user-specified opens and
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2 Serial Interface Capabilities
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Chapter 2 Serial Interface Capabilities Chapter Contents Chapter Contents This chapter describes how to operate the 59551A GPS Measurements Synchronization Module and the 58503B GPS Time and Frequency Reference Receiver via the RS-232C serial interface port. Hardware connections and configuration are discussed. This chapter is organized as follows: • About the RS-232C Serial Port(s) page 2-3 – PORT 1 Rear-Panel RS-232C Serial Port page 2-3 – PORT 2 Front-Panel RS-232C Serial Port page 2-4 (5
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Chapter 2 Serial Interface Capabilities About the RS-232C Serial Port(s) About the RS-232C Serial Port(s) The 58503B has only a rear-panel (PORT 1) RS-232C serial interface port. The 59551A has separate rear-panel (PORT 1) and front-panel (PORT 2) RS-232C serial interface ports. The rear-panel (PORT 1) RS-232C serial interface port is the only port which can be used to upgrade the Receiver firmware; therefore, it is referred to as the PRIMARY port. The 59551A’s front-panel (PORT 2) RS-232
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Chapter 2 Serial Interface Capabilities About the RS-232C Serial Port(s) Refer to the sections titled “Connecting a Computer or Modem” in this chapter, on page 2-5, for wiring diagrams and more information on the RS-232C interface cables. PORT 2 Front-Panel RS-232C Serial Port (59551A Only) This 9-pin female subminiature D (DB-9) connector (PORT 2) RS-232C Serial Interface Port is located on the front panel. The pins used for PORT 2 RS-232C communication are described in Table 2-2. NOTE We
