Keithley 2601 User Manual

3-4 Return to Section Topics 2600S-900-01 Rev. C / January 2008
Section 3: Test Script Processor Interaction Series 2600 System SourceMeter
®
Instruments User’s Manual
points 3
The following command will execute the PulseVMeasureI function using the above parameters:
PulseVMeasureI(smua, -1, 1, 1E-3, 2E-3, 3)
Step 2: Read the buffer
Reference See in Section 7 of the Series 2600 Reference Manual for more details on the
reading buffers.
The above function stores the three current measurements in the reading buffer
(
smua.nvbuffer1). Also stored in the buffer are the voltage source settings and timestamps for
the measurements. The timestamps (in seconds) are referenced to the start of the test. The timer
for the timestamps starts at zero seconds when the test is started.
The printbuffer function is used to print (output) measured readings, timestamps and/or source
values stored in the buffers.
Print readings – The following code will return the three measured current readings stored in
nvbuffer1:
rb1 = smua.nvbuffer1
printbuffer(1, rb1.n, rb1)
Example output: 1.234567e-03, 2.362360e-03, 2.362368e-03
For the above printbuffer function, 1 is the starting index for values to print, rb1.n is the
ending index (for this function,
n = 3), and rb1 is the reading buffer (smua.nvbuffer1).
Print time stamps – The following command will print the time stamps for the three measured
current readings:
printbuffer(1, rb1.n, rb1.timestamps)
Example output: 5.555555e-02, 8.888888e-02, 1.111111e-01
Print source values – The following command will print the voltage source values for the three
measured current readings:
printbuffer(1, rb1.n, rb1.sourcevalues)
Output: 1.000000e+00, 1.000000e+00, 1.000000e+00
Print readings, time stamps and source values – The following command will return the three
sets of data (nine values) in the same message:
printbuffer(1, rb1.n, rb1, rb1.timestamps, rb1.sourcevalues)
Example output:
1.234567e-03, 5.555555e-02, 1.000000e+00, 2.362360e-03, 8.888888e-02,
1.000000e+00, 2.362368e-03, 1.111111e-01, 1.000000e+00
The above output is returned in the following order:
reading1, timestamp1, sourcevalue1, reading2, timestamp2, sourcevalue2, reading3, timestamp3,
sourcevalue3
Calling a function without parameters
When the command to call a script function is sent without parameters, input value fields and
messages will appear on the display to prompt the operator to input the parameters using the front
panel controls.
The following command will call the SourceVMeasureI function and then require operator
interaction:
PulseVMeasureI()

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.