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Newport LDS1000 User Manual

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1 EDH0170FE1010 – 09/98
LDS1000 Controller for Laser Diode Sensors
LDS1000
Controller for Laser Diode Sensors
1.0 Introduction
This manual describes the operations and conditions necessary for the
proper use and working of the NEWPORT LDS1000 Controller.
It also provides the basic maintenance operations that are useful to keep
the instrument in good working order.
IMPORTANT
NEWPORT LDS series sensors are measuring instruments that provides
results of measurements. The calibration certificate drawn up by NEW-
PORT for each delivery, or when an instrument is newly calibrated must
ALWAYS be supplied with the sensor. It provides the values of the para-
meters that must be stored in the memory of the LDS1000 electronic
controller so that the instrument gives accurate measurements. BEFORE
any measuring operation, the operator must make sure that the parame-
ters that are used by the electronic controller are the ones that the ins-
trument is designed to use. Refer to the corresponding chapter to check
and modify the sensor parameters.
RECOMMANDATIONS
You are strongly advised to read the chapter entitled “First use” careful-
ly before connecting your autocollimator.
2.0 Description
The LDS1000 Controller is designed to drive sensors of the NEWPORT LDS
series (for example, LDS-Vector autocollimator or STR500-H rectitude sen-
sor). The latter are compact and self-contained measuring instruments.
The LDS1000 electronic controller provides the means of displaying angu-
lar variations by measuring the movement of a spot of light on a position
sensing device. It has the capacity, off-line, to store up to 2048 measu-
rements (14336 measurements with the extended memory option) and to
calculate the averages of these measurements.
When linked to a personal computer it provides the possibility of proces-
sing and recording the measurements.
This manual is designed to facilitate the use of the LDS1000 Controller for
all its modes of operation.
A second user’s manual exists which describes and facilitates the use of
the sensor.

Table of Contents

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Newport LDS1000 Specifications

General IconGeneral
BrandNewport
ModelLDS1000
CategoryController
LanguageEnglish

Summary

1.0 Introduction

Description

Describes the LDS1000 Controller and its capabilities, including displaying angular variations and storing measurements.

Equipment

Lists the items included with the LDS1000 electronic controller and the sensor.

Modes of Operation

Details the different operating modes, including manual, remote, and analog modes.

Available Versions

Lists the different versions of the LDS1000 Controller based on options.

Dimensions

Provides the physical dimensions and connector layout of the LDS1000 Controller.

3.0 Principle of Operation

Laser Diode Sensors

Explains the technology behind the NEWPORT LDS series sensors and their signal reception.

Electronic Controller

Details the functions performed by the LDS1000 Controller, its processing capabilities, and interfaces.

4.0 Specification

General Characteristics

Lists the general specifications for both the LDS-Vector Optical Head and the LDS1000 Controller.

Environment

Specifies the operating temperature and humidity limits for the LDS1000 Controller.

RS-232-C and IEEE-488 Interfaces

Details the baud rate and mode parameters for RS-232-C and IEEE-488 interfaces.

Analog Outputs

Lists the electrical characteristics and limitations of the analog outputs.

Calibration

Explains the calibration certificate and parameters required for configuring the LDS1000 Controller.

Noise Reduction

Describes how the controller performs noise reduction techniques for measurements.

Offset Coefficient Adjustment

Explains how to adjust electronic offset coefficients for the detector.

5.0 Starting the Equipment

Setting Up

Guides on setting up the sensor, referring to individual sensor manuals.

Mounting

Emphasizes the importance of solid mounting for accurate small movement measurements.

Electric Connections

Provides instructions and cautions for making electrical connections, including cable usage.

Power Up

Explains the power-up sequence, initialization, and welcome messages displayed by the controller.

Power Up Messages

Lists and explains various messages that can be displayed during the controller's power-up sequence.

Alignment

Guides on ensuring proper alignment for visualizing angular measurements.

6.0 Configuring the Equipment

Sensor Configuration

Details how to configure the controller with different sensors and store their parameters.

Interface Configuration

Explains how to choose communication modes and parameters for connecting to a computer.

RS-232-C Interface

Describes the RS-232-C protocol, connection, and default parameters.

IEEE-488 Interface

Describes the IEEE-488 protocol, connection, and default parameters.

Controller Configuration

Covers controller configuration based on options, software version, and display brightness.

Analog Output Configuration

Explains how to configure analog output parameters like integration constant and gain.

7.0 Off-Line Use (Manual Mode)

Access to Manual Mode

Explains how to access the controller's manual mode and its starting point.

Manual Mode Functions

Details the functions available within the manual mode, categorized into sub-menus.

Measuring Functions

Describes specific measuring functions like Display Freeze and Offset Origin.

Display Freeze

Explains the function of freezing the display for easier reading of measurements.

Offset Origin

Details how to set the current point as the origin for relative measurements.

Integration Constant

Explains the integration constant parameter and its effect on measurement accuracy.

Graphic Display

Recommends graphic display for facilitating alignments, using a Bar-Graph representation.

Display Light Received

Explains how to check the received light level for proper instrument setup.

Maintenance Mode

Describes the maintenance mode, which displays raw analog/digital converter values.

Configuration Functions

Outlines the functions for parameter input of sensors, controller, and interfaces.

Parameter Input of the Current Sensor or the Memorized Sensors

Describes how to display and access current sensor parameters for modification.

Selecting the Number of the Current Sensor

Explains how to modify the number of the currently active sensor.

Modification of Current Sensor Parameters

Details how to modify sensor parameters like S/N, Type, Ycoef, Yincr, etc.

Display of Result in Arc-Seconds (LDS-Vector)

Explains how to display results in arc-seconds and correct parameters for this mode.

Programming a New Sensor

Guides on programming a new sensor into the controller's memory.

Visualization of Current Sensor Parameters

Explains how to check if the current sensor matches the connected one and view its parameters.

Communication Parameter Input

Details how to access and modify communication parameters for RS-232-C and IEEE-488.

Modification of Display Brightness

Explains how to adjust the display brightness of the controller.

Reading the Size of the Memory Installed

Describes how to read the installed memory size for acquisitions.

Reading the Analog Output Option

Explains how to check if the analog output option is present on the controller.

8.0 Analog Output Parameter Input

Selecting Analog Outputs (if option present)

Explains how to select analog outputs and the parameters that can be configured.

Modification of Analog Output Parameters

Details how to modify integration constant (INTG) and gain (GAIN) for analog outputs.

9.0 TRIG Input and PWOK Output

Conventions on Logical Inputs/Outputs

Explains the conventions for logical inputs (TRIG) and outputs (PWOK).

TRIG Input

Details the specifications and compatibility of the TRIG input.

PWOK Output

Details the specifications of the PWOK output.

10.0 Use with a Computer Interface

Checking the Interface

Guides on checking the physical connection and compatibility of interface parameters.

RS-232-C Interface

Describes the RS-232-C interface cable, connection, and recommended terminal program settings.

IEEE-488 Interface

Describes the IEEE-488 interface requirements, recommended card, and default parameters.

LDS-TOOLS Software

Introduces the LDS-TOOLS software for communication and its system requirements.

Programming

Presumes interface parameters are checked and covers basic programming concepts for computer communication.

Structure of Messages to the Controller

Explains the structure of ASCII messages sent to the controller and how they are processed.

Programming Conventions

Details conventions for accessing Interface Mode, axis naming, and measurement formats.

10.4 List of Commands

Commands Listed by Category

Lists commands categorized by System Management, Sensor Parameters, Acquisitions, and I/O.

Commands Listed in Alphabetic Order

Provides an alphabetical listing of all commands recognized by the controller.

10.5 Description of Commands

KI Define the Integration Constant

Defines the integration constant parameter (INTG) for acquisitions.

ML Return to Local Mode

Returns the controller from Interface Mode to Manual (Local) mode.

MR Set Interface Mode

Sets the controller to Interface Mode from Manual mode.

MS Read Acquisition Status

Reads the current acquisition status via an ASCII character code.

RB Read TRIGG Input Status

Reads the status of the TRIG input, returning 0 or 1.

RD Set Frozen Display Mode

Freezes the display on "REMOTE MODE" to remove refresh response times.

RE Set Active Display Mode

Enables display in remote mode, allowing response times related to refresh.

RO Read PWOK Output Status

Reads the status of the PWOK output, indicating if the sensor receives sufficient light.

RS Reset System

Stops ongoing work and performs a system reset on the LDS1000 controller.

SP Define Sample Period

Sets the sample period in milliseconds for acquisition functions.

ST Stop Work in Progress

Stops ongoing acquisitions without deleting memory.

TA Query Sensor Parameters

Reads the parameters of a current sensor axis (Y or Z).

TB Error Description

Provides a description for a given error code in ASCII format.

TE Read Error Code

Reads the last error code generated by the controller.

TK Acquisition on External Trigger

Performs measurements synchronized with an external trigger signal.

TM Immediate Acquisition

Immediately carries out a specified number of successive measurements.

TN Read Number of Selected Sensor

Reads the number of the currently selected sensor and its series number.

TP Read Current Position

Reads the current position of a specified axis (Y or Z).

TQ Acquisition on External Signal

Performs measurements triggered by an external signal on the TRIG input.

TS Read Operational Status

Reads the operational status, indicating memory type and display mode.

TT Read Measurements Saved

Reads previously saved measurements from memory.

VE Read Internal Program Version

Reads the internal program version of the controller.

XI Read Integration Constant

Reads the currently set integration constant in milliseconds.

XN Read Number of Stored Measurements

Reads the number of measurements currently stored in the controller's memory.

XS Read Sample Period

Reads the sample period currently set in milliseconds.

11.0 Maintenance

Optical Head

Provides laser safety cautions and warnings regarding the optical head.

Maintenance of the LDS1000 Electronic Controller

Outlines safety precautions and maintenance procedures for the electronic controller.

Cables

Details the types of cables used for connecting sensors, computers, and other equipment.

RS-232-C Cables

Describes the RS-232-C cables and their pinouts for connecting to a computer.

IEEE-488 Cable

Mentions the requirement for a standard commercial IEEE-488 cable.

Sensor Interface Cable: 'SENSOR' Connector

Describes the sensor interface cable and its connector pin assignments.

Analog Output Cables: “OUT Y” & “OUT Z" Connectors

Specifies the type of cables for analog output connectors.

Measurement Synchronization Input Cable: “TRIG” Connector

Specifies the type of cable for the TRIG input connector.

Beam Signal Output Cable: “PWOK” Connector

Specifies the type of cable for the PWOK output connector.

12 Appendices

A Example of Program Using RS-232-C Link

Provides an example program in Quick Basic for RS-232-C communication.

B IEEE-488 Link Characteristics

Details the IEEE-488 standard and its characteristics relevant to the controller.

IEEE-488 Functions Supported by LDS1000 Controller

Lists the IEEE-488 functions supported by the LDS1000 Controller.

B.2 IEEE-488 Function Subsets

Describes the specific GPIB function subsets supported by the controller.

B.3 SRQ Using

Explains the use of Serial Polling (SRQ) for obtaining information from GPIB devices.

Service form

EC Certificate of Conformity

Warranty

Warnings

WARNING: GROUNDING

Emphasizes the importance of proper grounding for user safety.

WARNING: CONNECTING ADDITIONAL EQUIPMENT

Cautions about connecting external equipment and cables, ensuring EC compliance.

WARNING: LDS SERIES SENSOR

Advises reading sensor manual and using specified cables for connection.

CAUTION: LASER SAFETY

Provides crucial safety information regarding laser radiation and eye exposure.

WARNING: DANGEROUS VOLTAGE

Warns about dangerous voltage and risks associated with opening the equipment.

CAUTION: SAFETY REGULATIONS

Lists safety regulations for instrument usage, including environmental conditions and modifications.

WARNING: UNPLUGGING

Provides guidelines for systematically disconnecting the equipment in various scenarios.

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