Jackson Labs LC_XO User Manual

Revision 08/29/12 B
LC_XO Low Cost Ultra Small 1x1 inch GPSDO Module Spec
 0.97 X 0.97 X 0.5 inch Module with
pins
 < 1 Min. Crystal Warm Up
 50 Channel WAAS GPS Receiver
 Very Low Power, TCXO or OCXO
 PRELIMINARY SPECIFICATION
TYP. ELECTRICAL SPECIFICATIONS:
Module Specification:
1 PPS Accuracy ±50ns to UTC RMS (1-Sigma) GPS Locked
Holdover Stability
<±20us over 3 Hour Period @+25°C (No Motion, OCXO)
1 PPS Output 3.3VDC CMOS
Serial Control SCPI-99 TTL Level, GPS NMEA Output
GPS Frequency L1, C/A 1574MHz
GPS Antenna Active or Passive
GPS Receiver 50 Channels, Mobile, SBAS WAAS, EGNOS, MSAS capable
Sensitivity Acquisition –142 dBm, Tracking -158 dBm
GPS TTFF Cold Start - <45 sec, Warm Start – 1 sec, Hot Start - 1 sec
ADEV
10Ks <5E-012 (OCXO, GPS Locked, 25°C, no motion)
TTL Alarm Output GPS LOCK indicator
Warm Up Time / Stabilization Time <5 min at +25°C to 1E-08 Accuracy
Supply Voltage (Vdd) 3.3V Single-Supply only (5V internally generated and filtered)
Power Consumption 0.7W with OCXO, 0.5W with TCXO
Operating Temperature 0°C to +60°C, -20C to +75C optional
Storage Temperature -45°C to +85°C
Additional Features
Firmware field-upgradable, external 1PPS input, status LEDs, compatible
to GPSCon, SNTP, GPSD, and Z38xx software applications, full NMEA
Oscillator Specification (OCXO):
Frequency Output 10MHz CMOS 5Vpp (3.3Vpp optional)
10MHz Retrace ±2E-08 After 1 Hour @ +25°C
Frequency Stability Over Temperature (Unlock Condition) ±2.5E-08 (OCXO) ±7.5E-08 (TCXO)
Output Amplitude 5Vpp CMOS
OCXO Warm Up Time < 1 min @ +25°C
Phase Noise (with 33uF or larger cap on 5V_Output pin 6)
TCXO OCXO
1Hz -65dBc/Hz -75dBc/Hz
10Hz -102dBc/Hz -110dBc/Hz
100Hz -132dBc/Hz -132dBc/Hz
1kHz -148dBc/Hz -142dBc/Hz
10kHz -152dBc/Hz -145dBc/Hz
100KHz <-155dBc/Hz <-150dBc/Hz
Connections: Connector Type:
1PPS Output, 10MHz Output, power, serial communication, system
status, NMEA, 1PPS in, ISP mode enable, antenna input
100 mil spacing on pins, can be soldered, or plugged into a socket, gold-
plated pins
Jackson Labs Technologies, Inc., 475 Alberto Way, Suite 120, Los Gatos, CA 95032
Phone: (408) 354-7888, Fax: (408) 354-7880, www.jackson-labs.com
sales@jackson-labs.com

Jackson Labs LC_XO Specifications

General

Brand	Jackson Labs
Model	LC_XO
Category	Control Unit
Language	English

Summary

TYP. ELECTRICAL SPECIFICATIONS:

Module Specification

Details electrical parameters for the LC_XO module, including accuracy, stability, and outputs.

Oscillator Specification (OCXO)

Specifies the performance characteristics of the onboard OCXO, such as frequency output and stability.

Phase Noise

Lists phase noise performance for OCXO and TCXO at various frequencies.

Connections

Describes the physical connections and pin functions on the module.

LC_XO PINOUT DESCRIPTION:

Pinout Diagram

Illustrates the physical pin layout of the LC_XO module.

Pin Descriptions

Lists each pin and its corresponding function.

1 Introduction

1.1 Overview

Provides a general description of the LC_XO GPSDO module's capabilities and functionality.

1.2 General Safety Precautions

Outlines essential safety measures to be observed during the operation of the instrument.

2 Quick-Start Instructions

2.1 Powering Up the Unit

Guides the user through the initial steps of powering on the LC_XO GPSDO.

2.1.3 LC_XO Pinout and Pin Description

Details each pin's function and its corresponding connection on the module.

2.4 Remote serial control

Describes how to establish and manage serial communication with the device.

3 Control and Command Utilities

3.2 Z38XX Utility

Details the installation and setup of the Z38XX software for monitoring and control.

3.3 GPScon Utility

Covers the installation and setup of the GPSCon utility for receiver monitoring.

3.4 Interpreting the Data

Provides guidance on understanding the data displayed by the software utilities.

3.5 Performance

Presents typical performance metrics and figures for the LC_XO board.

4 SCPI-Control Quick Start Instructions

4.2 General SCPI Commands

Lists fundamental SCPI commands for quick operation.

4.3 GPS Subsystem

Details commands for controlling and querying the GPS receiver status.

4.5 SYNChronization Subsystem

Manages commands for synchronizing the LC_XO with the GPS receiver.

4.8 SYSTEM Subsystem

Manages general configuration and status of the LC_XO.

4.9 SERVO Subsystem

Manages adjustments for the servo loop and PID control.

5 Certification and Warranty

5.1.1 Warranty

Details the warranty terms for material and workmanship defects.

5.1.2 Limitation of Warranty

Outlines conditions that void the warranty and disclaims implied warranties.