Keithley 2601 User Manual

2600S-900-01 Rev. C / January 2008 Return to Section Topics 3-17
Series 2600 System SourceMeter
®
Instruments User’s Manual Section 3: Test Script Processor Interaction
Example script 2 – script that uses functions
The script used in this example is in the file named “MeasCurrFunctionScript.tsp.” This script is
downloaded to the Series 2600 by selecting the Load “Function” Script option, and then clicking
the Load Script (GPIB) command button. The script is downloaded exactly as shown in the
previous example, except the “open file” and “loadscript” commands reflect the different script
name as shown below.
Open App.Path & "\" & "MeasCurrFunctionScript.tsp" For Input As #1
Call send(Addr%, "loadscript MeasCurrFunctionScript", intStatus)
The other difference is in the script itself, which is listed below. This script does not perform
multiple current measurements, but rather it creates a function named “MeasCurr,” which performs
one or more current measurements when it is called. The number of measurements depends on
the value of “ntimes,” which is passed to the function when it is called.
Figure 3-9 shows the GUI
(Graphical User Interface) after loading and running the script. Note that the Data text box does
not contain any readings as in the previous example; it simply indicates that the
“MeasCurr(ntimes)” function has been created.
function MeasCurr(ntimes)
local l_i -- Local counter variable
reset()
display.screen = display.SMUA
display.smua.measure.func = display.MEASURE_DCAMPS
smua.source.func = smua.OUTPUT_DCVOLTS
smua.source.autorangev = smua.AUTORANGE_ON
smua.source.levelv = 5
smua.source.limiti = 0.1
smua.measure.rangei = 0.1
smua.measure.nplc = 1
smua.source.output = smua.OUTPUT_ON
for l_i = 1, ntimes do
print(smua.measure.i())
end --for
smua.source.output = smua.OUTPUT_OFF
end --function
print("Function 'MeasCurr(ntimes)' created")

Keithley 2601 Specifications

General

Model	2601
Type	SourceMeter
Channels	1
Voltage Range	±40V
Maximum Voltage	40 V
Current Range	±3A
Maximum Current	3 A
Power	20 W
Current Resolution	10 pA
Measurement Resolution	6.5 digits
Voltage Resolution	100nV
Connectivity	USB, GPIB, Ethernet
Communication Interface	GPIB, RS-232

Summary

Front and Rear Panel Operation

Instrument Layout and Familiarization

Overview of front and rear panel controls and layout.

Safety Symbols and Terms

Explanation of safety icons and terminology used in the manual.

Source-Measure Capabilities Overview

Details the voltage and current sourcing and measuring specifications.

Instrument Power-Up Procedure

Step-by-step guide for connecting and powering on the instrument.

Performing Basic Measurements

Procedure for setting up and executing voltage/current measurements.

Using Instrument Data Buffers

Instructions for storing and recalling measurement data using internal buffers.

Remote Operation

Remote Interface Configuration

Setup for GPIB and RS-232 communication interfaces.

Test Script Builder (TSB) Introduction

Overview of the TSB software and its interface elements.

Making Measurements with TSB

Step-by-step guide for using TSB to control the instrument and take measurements.

Integrating with External Software

Examples of controlling the instrument using LabVIEW and Visual Basic.

Test Script Processor Interaction

Understanding Test Scripts

Definition and types of scripts (factory vs. user).

Running Scripts from the Front Panel

Procedure for executing scripts directly from the instrument.

Interacting with Scripts via Test Script Builder

Demonstrates running and modifying scripts using TSB.

Managing User Scripts

Procedures for adding, deleting, and executing custom user scripts.

Controlling Multiple Series 2600s (TSP-Link)

TSP-Link System Setup and Connections

Connecting instruments and forming a TSP-Link system.

Assigning Node Numbers

How to assign unique identifiers to instruments in a TSP-Link network.

TSP-Link Initialization and State Checking

Resetting the TSP-Link interface and verifying system communication status.

Expanded System Resource Access

Accessing instruments and running scripts across the TSP-Link system.

Specifications

Models 2601/2602 Specifications

Detailed technical and performance specifications for Models 2601 and 2602.

Models 2611/2612 Specifications

Detailed technical and performance specifications for Models 2611 and 2612.

Models 2635/2636 Specifications

Detailed technical and performance specifications for Models 2635 and 2636.

Series 2600 General Specifications

Overall specifications common to the Series 2600 product line.

Frequently Asked Questions

Optimizing Measurement Performance

Tips for adjusting settings to enhance speed and accuracy.

Digital I/O Port Configuration

How to utilize the Digital I/O port for control and triggering.

Instrument Triggering and Synchronization

Using Digital I/O to trigger other instruments or scanners.

Service Request (SRQ) Generation

Setting up and polling for instrument-generated service requests.

Non-Volatile Data Storage

Procedures for saving measurement data to internal memory.

Voltage Output Stacking

Connecting channels in series to achieve higher output voltages.

Current Output Paralleling

Connecting channels in parallel to achieve higher output currents.

Contact Check Measurement Procedures

Performing checks to detect poor connections or high resistance.

Low-Current Measurement Techniques

Methods and programming for accurate low-current measurements.