ILX Lightwave LDC-3916558 Manual de usuario

User’s Guide

3A Current Source TE Module

LDC-3916558

ILX Lightwave Corporation · P. O. Box 6310 · Bozeman, MT, U.S.A.59771 · U.S. & Canada: 1-800-459-9459 · International Inquiries: 406-556-2481 · Fax 406-586-9405

ilx.custhelp.com ·www.ilxlightwave.com

70033202 June 2005

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TABLE OF CONTENTS

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

Safety and Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Safety Information and the Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

General Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Safety Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

Safety Marking Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Comments, Suggestions, and Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Chapter 1 Introduction and Specifications

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Installing the Module into the LDC-3916 or LDC-3908 Mainframe . . . . . . . . . 2

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 2 Operations

Connecting to the Temperature Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

TEC Grounding Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operating the Temperature Controllers from the Front Panel . . . . . . . . . . . . 7

General Front Panel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Example Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Choosing Control Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Setting Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Setting Sensor Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

TABLE OF CONTENTS

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Setting Safety Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

TEC Error Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Chapter 3 Remote Operations

Remote Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

LDC-3916558 3-AMP Temperature Control Module Command Set . . . . . . 19

LDC-3916558 3-Amp Temperature Controller Often Used Commands . . . . 21

Command Timing and Completion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Status Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Status Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Output Off Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Chapter 4 Command Reference

GPIB Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

LDC-3916558 Device-Dependent Commands . . . . . . . . . . . . . . . . . . . . . . . . . 33

Chapter 5 Troubleshooting

Calibration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Recommended Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Local Calibration of the 3916558 3-Amp Temperature Controllers . . . . . . . . 69

Thermistor Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

ITE Current Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

TE Voltage Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Remote Calibration of the 3916558 3-Amp Temperature Controllers . . . . . . 72

Thermistor Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

ITE Current Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

TE Voltage Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

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LIST OF FIGURES

Figure 2.1 Rear Panel TEC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Figure 2.2 3916 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Figure 2.3 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Figure 2.4 TEC p1 Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Figure 2.5 TEC p2 Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Figure 2.6 TEC p3 Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Figure 2.7 TEC p4 Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Figure 2.8 Example Thermistor Resistance vs. Temperature . . . . . . . . . . . . . . . . . .14

Figure 3.1 LDC-3916558 3-Amp Temperature Controller Command Path Structure20

Figure 3.2 LDC-3916558 Status Condition Registers . . . . . . . . . . . . . . . . . . . . . . . .23

Figure 3.3 LDC-3916558 Event Status Registers . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Figure 4.1 Command Description Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

LIST OF FIGURES

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LIST OF TABLES

Table 2.1 TEC Controllable Laser Sources . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 2.2 3916558 Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 2.3 TEC Error Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 3.1 LDC-3916558 Often Used Commands. . . . . . . . . . . . . . . . . . . . . 21

Table 3.2 LDC-3916558 TEC Output Off Register Contents . . . . . . . . . . . . 25

Table 4.1 LDC-3916 Device-Dependent Commands. . . . . . . . . . . . . . . . . . 30

Table 5.1 Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . 68

Table 5.2 Required Calibration Components . . . . . . . . . . . . . . . . . . . . . . . . 68

LIST OF TABLES

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LDC-3916558 1

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CHAPTER 1

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INTRODUCTION AND SPECIFICATIONS

This chapter is an introduction to the LDC-3916558 3-Amp Temperature Control

Module for the LDC-3916 or LDC-3908 Laser Diode Controller Mainframe. It

contains unpacking information, instructions on how to install and apply power,

and safety considerations and instructions. It also contains some maintenance

information and specifications.

If any of the following symptoms exist, or are even suspected, remove the LDC-3916558

Module from service. Do not use the module until trained service personnel can verify

safe operation.

Visible damage

Severe transport stress

Prolonged storage under adverse conditions

Failure to perform intended measurements or functions

If necessary, return modules to ILX Lightwave for service and repair to ensure that safety

features are maintained.

Product Overview

The 3916558 module is intended to be used within a LDC-3916 16-channel or

LDC-3908 8-Channel Laser Diode Controller Mainframe. The module contains a

single three ampere independent temperature controller that drives a

thermoelectric cooler (TEC). The temperature controller features a bi-polar

current driver that works with most TEC modules to deliver precise temperature

control over a wide range of temperatures. The temperature controller operates

using thermistor type temperature sensors only. The LDC-3916558 features a

INTRODUCTION AND SPECIFICATIONS

Installing the Module into the LDC-3916 or LDC-3908 Mainframe

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TEC module voltage measurement, selection of thermistor current range, and

control loop gain adjustment from 1 to 127.

Initial Inspection

When you receive your LDC-3916558 3-Amp Temperature Control Module, check

for shipping damage immediately. Verify that the module has an ESD protective

hood on the 15-pin D-sub and that it is enclosed in an ESD safe handling bag.

Remember before handling the module to follow proper ESD safe handling

procedures.

Installing the Module into the LDC-3916 or LDC-3908

Mainframe

If you are receiving this new module without an LDC-3916 or LDC-3908

Mainframe for installation into a previously purchased mainframe, follow the

instructions below. If your system was configured at the factory with your desired

modules, skip this section.

Static discharge can damage your new Temperature Controller Module. Be certain you

use proper grounding procedures before you unpack and install your module(s) into the

LDC-3916 or LDC-3908 Mainframe.

Inspect the module for any visible shipping damage that may have occurred before

inserting the module into the mainframe. Pay special attention to the copper shielding

material on the back edge of the module.

Be sure that the LDC-3916 or LDC-3908 Mainframe power is off before inserting or

removing any module.

Unwrap the module from the anti-static bag it was packaged in.

Make sure the instrument the module is going into, either the LDC-3916 or the

LDC-3908, is switched off. Insert the module into the desired slot from the rear.

Each module is supported by two plastic card guides inside of the mainframe.

Insert the module, 40-pin connector first, by lining up the edges of the module

frame with the appropriate card guides (one on top and one on the bottom).

Carefully slide the module into the mainframe slot until the connector is seated.

You will have to push a little harder to seat the module. The rear panel of the

module should be flush with the mainframe when properly inserted. Fasten the

module to the mainframe with two screws located at the top and bottom of the

module rear panel.

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