Chroma 6310 Operation

Download

Programmable

DC Electronic Load

6310 Series

Operation & Programming

Manual

Edition

May 2002

P/N A11 000078

Legal Notices

The information in this document is subject to change without notice.

Chroma ATE INC. makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Chroma ATE INC. shall not be held liable for errors contained herein or direct, indirect, special, incidental or consequential damages in connection with the furnishing, performance, or use of this material.

CHROMA ATE INC. 43 Wu-Chuan Road, Wu-Ku Industrial Park, Wu-Ku, Taipei, Taiwan

Copyright Notices. Copyright 2002 Chroma ATE INC., all rights reserved. Reproduction, adaptation, or translation of this document without prior written permission is prohibited, except as allowed under the copyright laws.

Warranty

All Chroma instruments are warranted against defects in material and workmanship for a period of one year after date of shipment. Chroma agrees to repair or replace any assembly or component found to be defective, under normal use during this period. Chroma's obligation under this warranty is limited solely to repairing any such instrument, which in Chroma's sole opinion proves to be defective within the scope of the warranty when returned to the factory or to an authorized service center. Transportation to the factory or service center is to be prepaid by purchaser. Shipment should not be made without prior authorization by Chroma.

This warranty does not apply to any products repaired or altered by persons not authorized by Chroma, or not in accordance with instructions furnished by Chroma. If the instrument is defective as a result of misuse, improper repair, or abnormal conditions or operations, repairs will be billed at cost.

Chroma assumes no responsibility for its product being used in a hazardous or dangerous manner either alone or in conjunction with other equipment. High voltage used in some instruments may be dangerous if misused. Special disclaimers apply to these instruments. Chroma assumes no liability for secondary charges or consequential damages and in any event, Chroma's liability for breach of warranty under any contract or otherwise, shall not exceed the purchase price of the specific instrument shipped and against which a claim is made.

Any recommendations made by Chroma for use of its products are based upon tests believed to be reliable, but Chroma makes no warranty of the results to be obtained. This warranty is in lieu of all other warranties, expressed or implied, and no representative or person is authorized to represent or assume for Chroma any liability in connection with the sale of our products other than set forth herein.

CHROMA ATE INC.

43 Wu-Chuan Road, Wu-Ku Industrial Park, Wu-Ku, Taipei Hsien, Taiwan Tel: 886 -2-2298-3855 Fax: 886-2-2298-3596

http://www.chromaate.com

iii

CE-Conformity Declaration

For the following equipment: Product Name: DC Electronic Load Model Name: 6314, 6312, 63101, 63102, 63103, 63105, 63106, 63107, 63108, 63112 Manufacturer’s Name: Chroma ATE Inc. Manufacturer’s Address: 43 Wu-Chuan Road, Wu-Ku Industrial Park, Wu-Ku, Taipei Hsien, Taiwan

is herewith confirmed to comply with the requirements set out in the Council Directive on the Approximation of the Laws of the Member States Relating to Electromagnetic Compatibility(89/336/EEC) and electrical equipment designed for use within certain voltage limits(73/23/EEC;93/68/EEC)

For electromagnetic compatibility, the following standards were applied:

EMC: EN55011:1991 (Group I Class A) EN60555-2:1987--EN 61000-3-2(1995) EN60555-3:1987--EN 61000-3-3(1995) EN50082-1:1992

IEC 1000-4-3(1995) - 3 V/m

1 kV Power Lines

For safety requirement, the following standard was applied:

Safety: EN61010-1(1993)+A2(1995)

Taiwan July 1999

Place Date Neng-Sung Lee/Vice President, Engineering

Warning: This is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.

IEC 1000-4-2(1995):1991 - 8 kV AD, 4 kV CD (Class B)

IEC 1000-4-4(1995) - 0.5 kV Signal Lines

SAFETY SUMMARY

The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or specific WARNINGS given elsewhere in this manual will violate safety standards of design, manufacture, and intended use of the instrument. Chroma assumes no liability for the customer’s failure to comply with these requirements.

BEFORE APPLYING POWER

Verify that the product is set to match the available line voltage and the correct fuse is installed.

PROTECTIVE GROUNDING

Make sure to connect the protective grounding to prevent an electric shock before turning on the power.

NECESSITY OF PROTECTIVE GROUNDING

Never cut off the internal or external protective grounding wire, or disconnect the wiring of protective grounding terminal. Doing so will cause a potential shock hazard that may bring injury to a person.

FUSES

Only fuses with the required rated current, voltage, and specified type（normal blow, time delay, etc.）should be used. Do not use repaired fuses or short-circuited fuse holders. To do so could cause a shock or fire hazard.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

Do not operate the instrument in the presence of flammable gases or fumes.

DO NOT REMOVE THE COVER OF THE INSTRUMENT

Operating personnel must not remove the cover of the instrument. Component replacement and internal adjustment can only be done by qualified service personnel.

SAFETY SYMBOLS

DANGER - High voltage.

Explanation：To avoid injury, death of personnel, or damage to the

WARNING

CAUTION

instrument, the operator must refer to an explanation in the instruction manual.

Protective grounding terminal：To protect against electrical shock in case of a fault. This symbol indicates that the terminal must be

connected to ground before operation of equipment.

The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly performed or adhered to, could result in personal injury. Do not proceed beyond a the indicated conditions are fully understood and met. The CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the products. Do not proceed beyond a fully understood and met.

CAUTION sign until the indicated conditions are

WARNING sign until

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Table of Contents

PART 1: Operation

1. General Information ................................................................................................ 1-1

1.1 Introduction ........................................................................................................ 1-1

1.2 Description ......................................................................................................... 1-1

1.3 Overview of Key Features.................................................................................. 1-2

1.4 Specifications ..................................................................................................... 1-2

2. Installation ................................................................................................................ 2-1

2.1 Introduction ........................................................................................................ 2-1

2.2 Inspection ........................................................................................................... 2-1

2.3 Installing the Modules........................................................................................ 2-1

2.3.1 Channel Number ........................................................................................ 2-2

2.4 Installing the Mainframe .................................................................................... 2-3

2.4.1 Changing Line Voltage .............................................................................. 2-3

2.4.2 Turn-On Self-Test ...................................................................................... 2-4

2.5 Application Connection ..................................................................................... 2-5

2.5.1 Load Connections....................................................................................... 2-5

2.5.2 Remote Sensing Connections..................................................................... 2-6

2.5.3 Parallel Connections................................................................................... 2-6

2.6 Remote Control Connection............................................................................... 2-7

3. Operation Overview................................................................................................. 3-1

3.1 Introduction ........................................................................................................ 3-1

3.2 Front Panel Description...................................................................................... 3-1

3.3 Rear Panel Description....................................................................................... 3-2

3.4 Local/Remote Control........................................................................................ 3-3

3.5 Modes of Operation............................................................................................ 3-3

3.5.1 Constant Current Mode .............................................................................. 3-4

3.5.2 Constant Resistance Mode ......................................................................... 3-7

3.5.3 Constant Voltage Mode.............................................................................. 3-8

3.6 Load Synchronization ........................................................................................ 3-8

3.7 Measurements..................................................................................................... 3-9

3.8 Slew Rate & Minimum Transient Time............................................................. 3-9

3.9 Start/Stop Sink Current ...................................................................................... 3-9

3.10 Short On/Off..................................................................................................... 3-10

3.11 Load On/Off ..................................................................................................... 3-11

3.12 Protection Features........................................................................................... 3-11

3.13 Save/Recall Setting .......................................................................................... 3-12

3.14 Program ............................................................................................................ 3-12

4. Local Operation........................................................................................................ 4-1

4.1 Introduction ........................................................................................................ 4-1

4.2 Local Operation of Load Mainframe ................................................................. 4-1

4.2.1 Selecting the Channel................................................................................. 4-3

4.2.2 Setting the Operation Mode ....................................................................... 4-3

4.2.3 Setting the Program.................................................................................... 4-7

4.2.4 Running the Program ................................................................................. 4-9

4.2.5 Setting the Specification .......................................................................... 4-10

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

4.2.6 Setting the Configuration ......................................................................... 4-10

4.2.7 Recalling Files.......................................................................................... 4-15

4.2.8 Saving File/Default/Program.................................................................... 4-15

4.2.9 Going To Local ........................................................................................ 4-15

4.2.10 Lock Operation......................................................................................... 4-16

4.2.11 Setting System and RS-232C Connection................................................ 4-16

4.2.12 Connecting the GO/NG Output Port ........................................................ 4-16

4.2.13 Setting the GPIB Address ........................................................................ 4-17

4.3 Local Operation of Load Module..................................................................... 4-17

4.3.1 Local Operation of Single Channel/Module (Panel A)............................ 4-18

4.3.2 Local Operation of Double Channels/Module (Panel B)......................... 4-20

4.3.3 Online Change Level................................................................................ 4-22

PART 2: Programming

5. General Information for Programming ................................................................. 5-1

5.1 Introduction ........................................................................................................ 5-1

5.2 DIP Switches on the GPIB Card ........................................................................ 5-1

5.2.1 GPIB Address............................................................................................. 5-1

5.2.2 Other DIP Switches.................................................................................... 5-2

5.3 GPIB Capability of the Electronic Load ............................................................ 5-2

5.4 RS232C in Remote Control................................................................................ 5-3

6. Introduction to Programming................................................................................. 6-1

6.1 Basic Definition.................................................................................................. 6-1

6.2 Numerical Data Formats .................................................................................... 6-1

6.3 Character Data Formats...................................................................................... 6-2

6.4 Separators and Terminators................................................................................ 6-3

7. Language Dictionary................................................................................................ 7-1

7.1 Common Commands.......................................................................................... 7-1

7.2 Specific Commands............................................................................................ 7-5

7.2.1 ABORT Subsystem .................................................................................... 7-5

7.2.2 CHANNEL Subsystem .............................................................................. 7-6

7.2.3 CONFIGURE Subsystem........................................................................... 7-8

7.2.4 CURRENT Subsystem ............................................................................. 7-12

7.2.5 FETCH Subsystem................................................................................... 7-15

7.2.6 LOAD Subsystem .................................................................................... 7-16

7.2.7 MEASURE Subsystem ............................................................................ 7-19

7.2.8 MODE Subsystem.................................................................................... 7-21

7.2.9 PROGRAM Subsystem............................................................................ 7-22

7.2.10 RESISTANCE Subsystem ....................................................................... 7-27

7.2.11 RUN Subsystem ....................................................................................... 7-28

7.2.12 SHOW Subsystem.................................................................................... 7-28

7.2.13 SPECIFICATION Subsystem .................................................................. 7-29

7.2.14 STATUS Subsystem ................................................................................ 7-32

7.2.15 VOLTAGE Subsystem............................................................................. 7-36

8. Status Reporting....................................................................................................... 8-1

8.1 Introduction ........................................................................................................ 8-1

8.2 Register Information in Common ...................................................................... 8-1

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

8.3 Channel Status.................................................................................................... 8-3

8.4 Channel Summary.............................................................................................. 8-3

8.5 Questionable Status............................................................................................ 8-4

8.6 Output Queue ..................................................................................................... 8-4

8.7 Standard Event Status ........................................................................................ 8-4

8.8 Status Byte register ............................................................................................ 8-5

8.9 Service Request Enable register......................................................................... 8-6

9. An Example of Use ................................................................................................... 9-1

PART 1

Operation

General Information

1. General Information

1.1 Introduction

This manual contains specifications, installation, operation, and programming instructions of 6314, 6312 electronic load mainframes as well as 63102, 63103, 63105 ... electronic load modules. Here “Load” means the electronic load modules of Chroma 6310 series while “Mainframe” the 6314, 6312 electronic load mainframes.

1.2 Description

The functions of 6314 and 6312 mainframes are the same. The former has four slots for Load modules while the latter two slots. The functions of 63102, 63103, 63105, etc. are all the same. The differences are in input voltage, load current, and power ratings. An individual module may have one or two channels. Each channel has its own channel number, load & measurement connectors, and operates independently in constant current (CC) mode, constant resistance (CR) mode, or constant voltage (CV) mode.

Figure 1-1 The Front Panel of the Electronic Load

On the front panel of the electronic load as shown in Figure 1-1 there are two groups of keypads. One is the Mainframe keypad. The other is the Load keypad. In this manual, Mainframe keypad is described as

MODE while Load keypad as SHORT.

1-1

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

1.3 Overview of Key Features

A. Configuration

• Flexible configuration using plug-in electronic load modules to mainframes.

• Local operation on front panel keypad.

• Remote control via GPIB or RS-232C interface.

• Photocoupler isolation to offer true floating Load.

• Automatic fan speed control to reduce noise.

• Up to 8 channels for one Mainframe.

B. Load

• Constant current (CC), constant resistance (CR) and constant voltage (CV) operation modes.

• Programmable slew rate, load levels, load periods and conduct voltage (Von).

• Programmable dynamic loading with speed up to 20KHz.

• Minimum input resistance allows load to sink high current even with low input

voltage (1 V).

• Selective voltage and current ranges.

• Remote sensing capability.

• 100 sets of memories to save/recall user-definable setups.

• 10 sets of programs to link files for automatic test.

• 15-bit A/D converter with precision measurement.

• Short circuit simulation.

• Automatic GO/NG inspection to confirm UUT within spec.

• Independent GO/NG signals for each channel.

1.4 Specifications

Mainframe : 6314/6312 AC input : 115/230 switchable or 100/200 switchable Vac line Fuse : 5A, 250V/2A, 250V Amplitude : ±10% Frequency : 47 to 63 Hz Maximum VA : 180VA/100VA Trigger output : Vlo = 0.8V maximum at Ilo = 1 mA

Vhi = 3.2V minimum at Ihi = −40µA

Weight : 24Kg/15Kg Dimension : Width : 440mm/275mm Height : 177.4 mm (excluding feet)

186mm (including feet)

Depth : 560mm (including Load module)

∗ The specifications of Load are listed below.

LNotice

1-2

General Information

1. All specifications are tested under 20°C ∼ 30°C except otherwise stated.

2. The range of operation temperature is 0°C ∼ 40°C.

3. The specifications of DC current accuracy are tested after the input is applied for 30 seconds.

4. The power of the load module of 6310 series is supplied from 6314/6312 mainframe.

5. The typical temperature coefficient is 100ppm.

6. The specifications of CR mode accuracy: v means 1/ohm.

1-3

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

MODEL 63101 63105

POWER CURRENT VOLTAGE MIN. OPERATING VOLTAGE (DC) CONSTANT CURRENT MODE

Range Resolution 1mA 10mA 0.25mA 2.5mA Accuracy 0.1%+0.1%F.S. 0.1%+0.2%F.S. 0.1%+0.1%F.S. 0.1%+0.2%F.S.

CONSTANT RESISTANCE MODE

Range Resolution 12 bits 12 bits Accuracy

CONSTANT VOLTAGE MODE

Range Resolution 20mV 125mV Accuracy

20W 200W 30W 300W

0∼4A 0∼40A 0∼1A 0∼10A

1∼80V 2.5∼500V

1.0V at 4A 1.0V at 40A 2.5V at 1A 2.5V at 10A

0∼4A 0∼40A 0∼1A 0∼10A

0.0375Ω∼150Ω (200W/16V)

1.875Ω∼7.5KΩ (200W/80V)

150Ω : 0.1v+0.2%

7.5KΩ : 0.01v+0.1% 1∼80V 2.5∼500V

0.05%±0.1%F.S. 0.05%±0.1%F.S.

1.25Ω∼5KΩ (300W/125V)

50Ω∼200KΩ (300W/500V)

5KΩ : 20mv+0.2%

200KΩ : 5mv+0.1%

DYNAMIC MODE

T1 & T2

Accuracy Slew Rate Resolution Current Resolution 1mA 10mA 0.25mA 2.5mA Current Accuracy 0.4% F.S. 0.4% F.S.

0.64∼160mA/µS 6.4∼1600mA/µS 0.16∼40mA/µS 1.6∼400mA/µS

0.64mA/µS 6.4mA/µS 0.16mA/µS 1.6mA/µS

C.C. MODE C.C. MODE

0.025mS∼10mS / Res: 1µS 1mS∼30S / Res: 1mS

1µS /1mS+100ppm 1µS /1mS+100ppm

0∼4A 0∼40A 0∼1A 0∼10A

0.025mS∼10mS / Res: 1µS 1mS∼30S / Res: 1mS

MEASUREMENT SECTION

VOLTAGE READ BACK

Range Resolution 0.5mV 2.5mV 4mV 16mV Accuracy 0.05%+0.05% F.S. 0.05%+0.05% F.S.

CURRENT READ BACK

Range Resolution 0.125mA 1.25mA 4mA 16mA Accuracy 0.1%+0.1% F.S. 0.1%+0.1% F.S.

0∼16V 0∼80V 0∼125V 0∼500V

0∼4A 0∼40A 0∼1A 0∼10A

PROTECTIVE SECTION

Over Power Protection

Over Current Protection

Over Temperature Protection

Over Voltage Protection

≒20.8W

≒4.08A

≒85°C

≒81.6V

≒208W ≒40.8A

≒31.2W

≒1.02A

≒85°C

≒510V

≒312W ≒10.2A

GENERAL

SHORT CIRCUIT

Current (CC)

Voltage (CV) 0V 0V 0V 0V Resistance (CR)

INPUT RESISTANCE (LOAD OFF) SIZE WEIGHT (Approx.) EMC & SAFETY

≒4.4/4A

≒1.875Ω

100KΩ (Typical) 100KΩ (Typical)

81(W)× 172(H)×495(D) 81(W)× 172(H)×495(D)

≒44/40A

≒0.0375Ω

4.2Kg 4.2Kg

CE CE

≒1.1/1A

≒50Ω

≒11/10A

≒1.25Ω

1-4

General Information

MODEL 63102(100W*2) 63103

POWER CURRENT VOLTAGE MIN. OPERATING VOLTAGE (DC) CONSTANT CURRENT MODE

Range Resolution 0.5mA 5mA 1.5mA 15mA Accuracy 0.1%+0.1%F.S. 0.1%+0.2%F.S. 0.1%+0.1%F.S. 0.1%+0.2%F.S.

CONSTANT RESISTANCE MODE

Range Resolution 12 bits 12 bits Accuracy

CONSTANT VOLTAGE MODE

Range Resolution 20mv 20mv Accuracy

20W 100W 30W 300W

0∼2A 0∼20A 0∼6A 0∼60A

1∼80V 1∼80V

1.0V at 2A 1.0V at 20A 1.0V at 6A 1.0V at 60A

0∼2A 0∼20A 0∼6A 0∼60A

0.075Ω∼300Ω (100W/16V)

3.75Ω∼15KΩ (100W/80V)

300Ω : 0.1v+0.2%

15KΩ : 0.01v+0.1%

1∼80V 2.5∼500V

0.05%±0.1%F.S. 0.05%±0.1%F.S.

0.025Ω∼100Ω (300W/16V)

1.25Ω∼5KΩ (300W/80V)

100Ω : 0.1v+0.2%

5KΩ : 0.01v+0.1%

DYNAMIC MODE

T1 & T2

Accuracy Slew Rate Resolution Current Resolution 0.5mA 5mA 1.5mA 15mA Current Accuracy 0.4% F.S. 0.4% F.S.

0.32∼80mA/µS 3.2∼800mA/µS 0.001∼0.25A/µS 0.01∼2.5A/µS

0.32mA/µS 3.2mA/µS 0.001A/µS 0.01A/µS

C.C. MODE C.C. MODE

0.025mS∼10mS / Res: 1µS 1mS∼30S / Res: 1mS

1µS /1mS+100ppm 1µS /1mS+100ppm

0∼2A 0∼20A 0∼6A 0∼60A

0.025mS∼10mS / Res: 1µS 1mS∼30S / Res: 1mS

MEASUREMENT SECTION

VOLTAGE READ BACK

Range Resolution 0.5mV 2.5mV 0.5mV 2.5mV Accuracy 0.05%+0.05% F.S. 0.05%+0.05% F.S.

CURRENT READ BACK

Range Resolution 0.0625mA 0.625mA 0.1875mA 1.875mA Accuracy 0.1%+0.1% F.S. 0.1%+0.1% F.S.

0∼16V 0∼80V 0∼16V 0∼80V

0∼2A 0∼20A 0∼6A 0∼60A

PROTECTIVE SECTION

Over Power Protection

Over Current Protection

Over Temperature Protection

Over Voltage Protection

≒20.8W

≒2.04A

≒85°C

≒81.6V

≒104W ≒20.4A

≒31.2W

≒6.12A

≒85°C

≒81.6V

≒312W ≒61.2A

GENERAL

SHORT CIRCUIT

Current (CC)

Voltage (CV) 0V 0V 0V 0V Resistance (CR)

INPUT RESISTANCE (LOAD OFF) SIZE WEIGHT (Approx.) EMC & SAFETY

≒2.2/2A

≒3.75Ω

100KΩ (Typical) 100KΩ (Typical)

81(W)× 172(H)×495(D) 81(W)× 172(H)×495(D)

≒22/20A

≒0.075Ω

4.2Kg 4.2Kg

CE CE

≒6.6/6A

≒1.25Ω

≒66/60A

≒0.025Ω

1-5

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

MODEL 63107(30W,250W) 63106

POWER CURRENT VOLTAGE MIN. OPERATING VOLTAGE (DC) CC MODE Range

Resolution 1.25mA 1mA 10mA 3mA 30mA Accuracy 0.1%+0.1%F.S. 0.1%+0.1%F.S. 0.1%+0.2%F.S. 0.1%+0.1%F.S. 0.1%+0.2%F.S.

CR MODE Range

Resolution 12 bits 12 bits 12 bits Accuracy

CV MODE Range

Resolution 20mV 20mV Accuracy

30W 30W 250W 60W 600W

0∼5A 0∼4A 0∼40A 0∼12A 0∼120A

1∼80V 1∼80V

1.0V at 5A 1.0V at 4A 1.0V at 40A 1.0V at 12A 1.0V at 120A

0∼5A 0∼4A 0∼40A 0∼12A 0∼120A

0.3Ω∼1.2KΩ (30W/16v) 15Ω∼60KΩ (30W/80v)

12KΩ : 0.1v+0.2%

60KΩ : 0.01v+0.1%

0.05%±0.1%F.S. 0.05%±0.1%F.S.

0.375Ω∼150Ω (250W/16v)

1.875Ω∼7.5KΩ (250W/80v)

150Ω : 0.1v+0.2%

7.5KΩ : 0.01v+0.1%

1∼80V 1∼80V

12.5mΩ∼50Ω (600W/16v)

0.625Ω∼2.5KΩ (600W/80v)

50Ω : 0.1v+0.5%

2.5KΩ : 0.01v+0.2%

DYNAMIC MODE

T1 & T2

Accuracy Slew Rate Resolution Current Resolution 1.25mA 1mA 10mA 3mA 30mA Current Accuracy 0.4% F.S. 0.4% F.S.

0.8∼200mA/µS 0.64∼160mA/µS6.4∼1600mA/µS 0.002∼0.5A/µS 0.02∼5A/µS

0.8mA/µS 0.64mA/µS 6.4mA/µS 0.002A/µS 0.02A/µS 0∼5A 0∼4A 0∼40A 0∼12A 0∼120A

C.C. MODE C.C. MODE

0.025mS∼10mS / Res: 1µS 1mS∼30S / Res: 1mS

1µS /1mS+100ppm 1µS /1mS+100ppm

0.025mS∼10mS / Res: 1µS 1mS∼30S / Res: 1mS

MEASUREMENT SECTION

VOLTAGE READ BACK

Range Resolution 0.5mV 2.5mV 0.5mV 2.5mV 0.5mV 2.5mV Accuracy 0.05%+0.05% F.S. 0.05%+0.05% F.S.

CURRENT READ BACK

Range Resolution 0.15625mA 0.125mA 1.25mA 0.375mA 3.75mA Accuracy 0.1%+0.1% F.S. 0.1%+0.1% F.S.

0∼16V 0∼80V 0∼16V 0∼80V 0∼16V 0∼80V

0∼5A 0∼4A 0∼40A 0∼12A 0∼120A

PROTECTIVE SECTION

Over Power Protection

Over Current Protection

Over Temperature Protection Over Voltage Protection

≒31.2W

≒5.1A

≒31.2W ≒4.08A

≒85°C

≒81.6V

≒260W ≒40.8A

≒62.4W

≒12.24A

≒85°C

≒81.6V

≒624W

≒122.4A

GENERAL

SHORT CIRCUIT

Current (CC)

Voltage (CV) 0V 0V 0V 0V 0V Resistance (CR)

INPUT RESISTANCE (LOAD OFF) SIZE WEIGHT (Approx.) EMC & SAFETY

≒5.5/5A

≒15Ω ≒0.3Ω ≒1.875Ω

≒4.4/4A

100KΩ (Typical) 100KΩ (Typical)

81(W)× 172(H)×495(D) 162(W)× 172(H)×495(D)

4.2Kg 8.4Kg

CE CE

≒44/40A

≒0.0375Ω

≒13.2/12A ≒132/120A

≒0.625Ω

≒0.0125Ω

1-6

General Information

MODEL 63108 63112

POWER CURRENT VOLTAGE MIN. OPERATING VOLTAGE (DC) CONSTANT CURRENT MODE

Range Resolution 0.5mA 5mA 6mA 60mA Accuracy 0.1%+0.1%F.S. 0.1%+0.2%F.S. 0.1%+0.1%F.S. 0.1%+0.2%F.S.

CONSTANT RESISTANCE MODE

Range Resolution 12 bits 12 bits Accuracy

CONSTANT VOLTAGE MODE

Range Resolution 125mV 20mV Accuracy

60W 600W 120W 1200W

0∼2A 0∼20A 0∼24A 0∼240A

2.5∼500V 1∼80V

2.5V at 2A 2.5V at 20A 1.0V at 24A 1.0V at 240A

0∼2A 0∼20A 0∼24A 0∼240A

0.625Ω∼2.5KΩ (600W/125V) 25Ω∼100KΩ (600W/500V)

2.5KΩ : 50mv+0.2% 100KΩ : 5mv+0.1%

2.5∼500V 1∼80V

0.05%±0.1%F.S. 0.05%±0.1%F.S.

6.25mΩ∼25Ω (1200W/16V)

0.3125Ω∼1.25KΩ (1200W/80V)

25Ω : 0.1v+0.8%

1.25KΩ : 0.01v+0.2%

DYNAMIC MODE

T1 & T2

Accuracy Slew Rate Resolution Current Resolution 0.5mA 5mA 6mA 60mA Current Accuracy 0.4% F.S. 0.4% F.S.

0.32∼80mA/µS 3.2∼800mA/µS 0.004∼1A/µS 0.04∼10A/µS

0.32mA/µS 3.2mA/µS 0.004A/µS 0.04A/µS

C.C. MODE C.C. MODE

0.025mS∼10mS / Res: 1µS 1mS∼30S / Res: 1mS

1µS /1mS+100ppm 1µS /1mS+100ppm

0∼2A 0∼20A 0∼24A 0∼240A

0.025mS∼10mS / Res: 1µS 1mS∼30S / Res: 1mS

MEASUREMENT SECTION

VOLTAGE READ BACK

Range Resolution 4mV 16mV 0.5mV 2.5mV Accuracy 0.05%+0.05% F.S. 0.05%+0.05% F.S.

CURRENT READ BACK

Range Resolution 0.0625mA 0.625mA 0.75mA 7.5mA Accuracy 0.1%+0.1% F.S. 0.15%+0.15% F.S.

0∼125V 0∼500V 0∼16V 0∼80V

0∼2A 0∼20A 0∼24A 0∼240A

PROTECTIVE SECTION

Over Power Protection

Over Current Protection

Over Temperature Protection

Over Voltage Protection

≒62.4W

≒2.04A

≒85°C

≒510V

≒624W ≒20.4A

≒124.8W

≒24.48A

≒85°C

≒81.6V

≒1248W ≒244.8A

GENERAL

SHORT CIRCUIT

Current (CC)

Voltage (CV) 0V 0V 0V 0V Resistance (CR)

INPUT RESISTANCE (LOAD OFF) SIZE WEIGHT (Approx.) EMC & SAFETY

≒2.2/2A

≒25Ω

100KΩ (Typical) 100KΩ (Typical)

162(W)× 172(H)×495(D) 324(W)× 172(H)×495(D)

≒22/20A

≒0.625Ω

8.4Kg 16.8Kg

CE CE

≒26.4/24A

≒0.3125Ω

≒264/240A

≒0.00625Ω

1-7

Installation

2. Installation

2.1 Introduction

This chapter discusses how to install the Load to Mainframe and make connections to the Loads. It discusses a turn-on check procedure and application considerations as well.

2.2 Inspection

As soon as the instrument is unpacked inspect any damage that might have occurred in shipping. Keep all packing materials in case that the Load or the Mainframe has to be returned. If any damage is found, please file a claim with the carrier immediately. Do not return the instrument to Chroma without prior approval.

In addition to this manual, be sure that the following items have also been received with your Mainframe and Load.

Mainframe: Power Cord, Manual Load Module: Measurement and Load Cables

2.3 Installing the Modules

a CAUTION

Load module can be damaged by electronic discharge (static electricity). Use standard anti-static work practices when you handle and install modules. Avoid touching the connector and the circuit board.

The Chroma 6314 Mainframe has room for four single-width Loads (63102, 63103), or two double-width Loads (63106). Loads can be combined in the Mainframe in any order. The Chroma 6312 mainframe has room only for two single-width Loads or one double-width Load. The procedures of the module installation in both Mainframes are the same. Only the screwdriver is required in installing Load to Mainframe.

Procedures:

1. Disconnect the power cord with the Mainframe power off.

2. Remove any packing materials from the Mainframe.

3. Start installing the modules in the slot (see Figure 2-1).

4. Plug the load module into the slot of the Mainframe along the rail.

5. Lock the module in place by use of the screwdriver (see Figure 2-1).

6. Install each additional module in the slot next to the previous one likewise if applicable.

2-1

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Figure 2-1 Installing Modules in the Electronic Load

" WARNING

If the Mainframe is not installed with all modules, the empty module position must be installed with the panel cover (Chroma part No: L00 000190) for safety and airflow.

2.3.1 Channel Number

The channel number of a specific Load is determined by the location of that module in relation to the farthest left side of Mainframe. Because some Load (63102) has two channels in one module, channel 1 and 2 are always on the farthest left slot of the Mainframe, and channel 7 and 8 on the farthest right. The channel number is fixed for Mainframe even Load module is empty. Figure 2-2 shows the channel assignments for a Chroma 6314 Mainframe containing two Loads of 63103 single channel/module, and two Loads of 63102 double channel/module. Channel number is automatically assigned to each channel: 1, 3, 5, 6, 7, 8. At this moment channel 2 and 4 are empty. 6312 Mainframe has only four channels (1, 2, 3, 4).

2-2

Installation

Figure 2-2 Channel Number Example

2.4 Installing the Mainframe

The electronic Load can operate well within temperature range of 0 to 40 degree C. However, you must install the electronic Load in a location that has enough space at the top, four sides, and the rear of the unit for adequate air flowing through and escaping from the back. You must leave at least 3 cm (1 inch) space above the unit for adequate air circulation. Note that the feet of the unit have enough vertical space for air circulation when it is stacked. The feet of the Mainframe can be removed for rack mounting.

If you install equipment on top of your electronic Load in the cabinet, you must use a filter panel above the unit to ensure adequate air circulation. A 1U (EIA standard) panel is sufficient.

2.4.1 Changing Line Voltage

The electronic Load can operate with a 115/230 Vac input as indicated on the rear LINE label. The 100/200 line voltage input model is used only in Japan. If the factory set switch on this label does not correspond to your nominal line voltage, turn the Mainframe power off, and disconnect the power cord. Set switch to the correct line voltage as shown in Figure 2-3.

L Notice

Line fuses do not need to be changed when the line voltage is changed. The line fuses will protect the electronic Load in any indicated voltage setting.

2-3

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Figure 2-3 Line Voltage Switch

2.4.2 Turn-On Self-Test

Before turning on the Load check the following things.

1. The unit has been factory set to the correct line voltage. Refer to line voltage on the rear panel.

2. The power cord is connected to the AC input socket.

" WARNING

The power provides a chassis ground through a third connector. Be sure that your outlet is of three-conductor type with the correct pin connected to earth ground.

Turn on the Load by the power switch on the front panel of the Mainframe and observe the display. Immediately after turning on, the electronic Load executes a self-test which checks the GPIB interface board and the input circuitry of the installed modules. All of the LED segments on the front panel are momentarily activated. The Mainframe displays

and then displays

LOAD MODULE CHANNEL SCANing

The LCD displays the GPIB address in power-on condition. The GPIB address switch is on the rear panel if the GPIB card is installed. If the GPIB card is not installed, the LCD will show LOAD MODULE CHANNEL SCANing. Mainframe checks the existing channels when the display is CHANNEL SCANing. The LED segment on the front panel are momentarily activated. If the Mainframe fails any portion of the self-test, the LED will blink, and the LCD has no display. When self-test completes, the Mainframe will display the active channel, which is installed.

The Load module also executes a self-test that checks firmware and communication with Mainframe. All of the LEDs on the front panel are momentarily activated, and the 7-segment LED displays model number as well as firmware version. If any error is found in self-test, the display will stick here. Check the Load and Mainframe connection when an error occurs. When the self-test completes, the 7-segment will display measurement V & I.

GPIB ADDRESS = 1

2-4

The double channel/module goes to L channel.

Installation

Figure 2-4 Module Panel Self-test Display

In case of failure return the Mainframe or Load module to Chroma sales or service office for repair.

63103 < --- Model Number

1.02 < --- F/W version

2.5 Application Connection

2.5.1 Load Connections

WARNING

To satisfy safety requirements, load wires must be heavy enough not to overheat while carrying the short-circuit output current of the device connected to the electronic Load.

Before connecting load wires to Load module, remove the terminal cover from the Load. Install it after load wires are connected. Input connections are made to the + and − terminal block on the front of each Load module. The major considerations in making input connections are the wire size, length and polarity. The minimum wire size required to prevent overheating may not be enough to maintain good regulation. The wires should be large enough to limit the voltage drop to no more than 0.5V per lead. The wires should be as short as possible, and bundled or tied together to minimize inductance and noise picked up from them. Connect the wire from the PLUS (+) terminal on the module to the HIGH potential output terminal of the power supply (UUT). Connect the wire from the MINUS (−) terminal on the module to the LOW potential output terminal of the power supply (UUT). Figure 2-5 illustrates the typical setup for the Load module to the UUT.

" WARNING

To prevent accidental contact with hazardous voltage, cover of terminal must be installed correctly. Each terminal can carry 40 Amps at most. If the input current of Load is over 40 Amps, you must use multiple terminals of connections.

2-5

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Figure 2-5 Load & Remote Sensing Connection

2.5.2 Remote Sensing Connections

There are two sensing points for the electronic Load module. One is measurement at Load, terminal, and another is measurement at Vsense. The Load module will automatically switch to Vsense when Vsense terminals are connected to UUT, otherwise it will measure at Load terminals. Remote sensing compensates for voltage drop in applications that require long lead lengths. It is useful when a module is operating in CV or CR mode, or when it needs precise measurement. Figure 2-5 also illustrates a typical setup for remote sensing operation.

LNotice

The potential of Vsense red connector must be higher than that of Vsense black connector.

2.5.3 Parallel Connections

Figure 2-6 illustrates how modules can be paralleled for increased power dissipation. Modules can be directly paralleled in CC, CR modes of static operation, but cannot be paralleled in CV mode. Each module will dissipate the power it has been programmed. For example, if two modules are connected in parallel, one is programmed 10A, and another 15A, the total current drawn from the source is 25A.

2-6

Installation

Figure 2-6 Parallel Connection

2.6 Remote Control Connection

The remote operation of Load can be done through GPIB or RS-232C. These connectors on the rear panel connect the Load to the controller or computer. The GPIB interface of the electronic load is optional. The 6310 series Remote Controller can control load through RS-232C port. Connect Remote Controller to the electronic Load before powering on. If you have not done thus, Load will shut down, or fuse for remote controller in Mainframe will be broken.

2-7

Operation Overview

3. Operation Overview

3.1 Introduction

The Chroma 6314 and 6312 multiple electronic load mainframes are used for design, manufacturing, testing and quality assurance. The Mainframe contains four (two) slots for load modules. Load modules occupy either one or two slots. It depends on the power rating of the module. The Mainframe can dissipate up to 1200 watts when it is full loaded. It contains a processor, GPIB and RS-232C connectors, front panel keypad and display, and PASS/FAIL signals. Built-in remote control function allows you to control, read back current, voltage and status. The SYNC function of the Mainframe synchronizes each module when module current/voltage level changes. Save/Recall feature allows you to save up to 100 files, 10 programs, and one default setting. All of them can be saved in Mainframe EEPROM for future use.

The Mainframe contains three (two) cooling fans, and the module one cooling fan. The fan speed can automatically increase or decrease when the module power rises or falls. This feature reduces overall noise level because the fans do not always run at the maximum speed.

Each module can operate independently in constant current (CC), constant resistance (CR), and constant voltage (CV) modes. An individual module may have one or two channels. Each of them has its own channel number, contains its own input connectors, and can be turned on/off or short-circuited independently. If your application requires a greater power or current capacity than one module can provide, you have to connect load modules in parallel in CC or CR mode.

Each load module can be independently controlled either remotely via GPIB/RS-232C or locally via the front panel. Once a channel is selected or addressed, all subsequent commands go to that channel till another channel is selected or addressed. Operation of all models in the Mainframe is similar in spite of power ratings. The module has a keypad to control itself too.

3.2 Front Panel Description

The front panel of Mainframe includes a 16 × 2 character LCD display, 8 (4) channel indicators, and keypads. All parameters of Load are set through Mainframe. The LCD display also shows which function is being performed when you use the keypads. Three of the keys perform two functions. The alternative function is labeled in blue above the key. It is selected by pressing the blue 3-1 shows the front panel of Mainframe 6312.

SHIFT key and the function key simultaneously. Figure

3-1

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Figure 3-1 The Front Panel of Mainframe 6312

3.3 Rear Panel Description

The rear panel of Mainframe includes an RS-232C connector, a GO/NG output port, an AC LINE socket, a fuse holder, an optional GPIB connector, and three cooling fans. Figure 3-2 shows the rear panel of Mainframe 6314.

3-2

Operation Overview

Figure 3-2 The Rear Panel of Mainframe 6314

3.4 Local/Remote Control

Local (front panel) control is in effect immediately after power is applied. The front panel keypad and display allow manual control of individual module when Load is used in bench test applications. Remote control goes into effect as soon as the Mainframe receives a command via GPIB or RS-232C. With remote control in effect, only the computer can control the Load. The front panel keypad has no effect except the return the Load to local control from remote control by pressing LCL key. The SHIFT key acts as LCL when Load is in remote state.

Most of the functions that perform remotely can perform locally too at the front panel of Mainframe. The keypads on the module can perform simple functions like short, load on/off, static /dynamic, and load A/B or display selection R/L.

Details of local operation are given in Chapter 4 Local Operation. Fundamentals of remote programming are described in the second part of this manual, Chroma 6310 Programming Manual.

LCL key. You can

3.5 Modes of Operation

There are three modes of operation: Constant Current (CC), Constant Resistance (CR), and Constant Voltage (CV).

When you press change of modes the module’s input is momentarily disabled before a new mode is enabled.

ENTER key to program to a mode, a module will change to a new mode. In

3-3

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

This ensures that there will be minimum overshoots in change of modes. The parameters in current, resistance or voltage mode can be programmed simply as the mode is presently selected.

All data set in CC/CR/CV mode will be rescaled to fit the resolution of current/voltage levels or slew rate. In local mode any value can be set to a module from the keypad. There are no upper and lower limits that would cause an error. Mainframe automatically selects data, which are rescaled from the programmed value, truncates and checks high, low boundary before fitting memory. When programmed data are over the boundary, Mainframe will set maximum or minimum level for the Load module. In remote mode programmed value cannot be over boundary. An error will occur when data are over the maximum or minimum value.

3.5.1 Constant Current Mode

Figure 3-3 Constant Current Mode

In CC mode, the Load will sink a current in accordance with the programmed value regardless of input voltage. The CC mode can be set with front panel key

MODE. When

MODE SELECT is displayed, it means to select static low range CCL or static high range CCH.

Current Ranges (Low, High)

Current can be programmed in either of the two ranges, low range and high range. The low range provides better resolution at low current setting. If any value is over the maximum of

low range, you must select the high range. Press

MODE key first, then use ▲ or ▼

key to select the current range.

MODE SELECT CCL Select Static Constant Current low range

MODE SELECT

3-4

Operation Overview

CCH Select Static Constant Current high range

MODE SELECT CCDL Select Dynamic Constant Current low range

MODE SELECT CCDH Select Dynamic Constant Current high range

Select range by pressing

ENTER key.

The change of modes will affect the module, so will the change of range. Both cause the input to go through an off state. If the CC mode of Load module is active, the new setting will immediately change the input at a rate determined by the slew rate setting.

STATic/DYNAmic Functions

In CC mode two operation functions (STATic, DYNAmic) can be selected. STATic function checks the stability of output voltage from a power supply. In some modules (single channel/module) there are two current levels (A or B) for static function. Both states A and B use the same range. You can select A (CCL1 or CCH1) or B (CCL2 or CCH2) through the

A/B key on the module’s keypad or Mainframe keypad when level1 (A) or level2

(B) changes. Slew rate determines the rate at which Load level changes from one load level state to another. Figure 3-3 shows current level of load module after pressing of

A/B key.

CCL1:4A, CCL2:2A, CCL : 0.2A/µS, CCL : 0.08A/µS

Current

rise slew rate

fall slew rate

State A

State B

Time

10uS

Figure 3-4 Load Level after Pressing A/B Key

Dynamic load operation enables you to program two load levels (CCDL1, CCDL2), load duration (CCDLT1, CCDLT2), and slew rate (CCDL , CCDL ). During operation the loading level is switched between those two load levels according to your specific setting. The dynamic load is commonly used in the test of UUT’s performance under transient loading condition. Figure 3-4 shows current waveform of dynamic function.

CCDL1:4A, CCDL2:2A, CCDL :1A/µS, CCDL : 1A/µS, CCDLT1:10mS, CCDLT2:10mS

25uS

press key "A/B"

3-5

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Current

Load1

load2

Time

10mS 10mS

Figure 3-5 Dynamic Current Waveform

The STATic/DYNAmic functions can be also selected through Load module.

Slew Rate (Rise, Fall A/µS or mA/µS)

Slew rate determines the rate at which the current input of a module changes to a newly programmed value. There are two slew rate values. One is for rise rate, and another for fall rate.

Voltage Ranges (Low, High)

There are two voltage ranges for voltage measurement and Von voltage setting. The low range provides better resolution at low voltage measurements. If any value is over the maximum of low range, you must select the high range. The voltage range selection of CC mode is in configuration setting.

10mS 10mS

STATIC/DYNAMIC key on the

3-6

Operation Overview

3.5.2 Constant Resistance Mode

Figure 3-6 Constant Resistance Mode

In CR mode, the Load will sink a current linearly proportional to the input voltage in accordance with the programmed resistance. There is a double pole RC filter of input voltage, so high frequency parts will be removed. The time constant of low pass filter is about 47 µS. The load sink current of CR mode is proportioned to the input voltage through a double pole RC filter. To prevent the load current change caused by the input voltage variation, the power source impedance should be as low as possible, and remote sensing cable must be used to sense load input voltage when high sink current (low setting resistance) is programmed.

Voltage Ranges (Low, High)

Resistance can be programmed in either of the two ranges, low range and high range. The low range is used for input voltage in low voltage range while the high range for input voltage over low voltage range. The current range of CR mode is high range.

MODE SELECT

CRL Select Constant Resistance low voltage range

MODE SELECT CRH Select Constant Resistance high voltage range

Select range by pressing

If input voltage is over the maximum of low range, you must select the high range. Press

MODE key first, and then use ▲ or ▼ key to select voltage range. In some

modules (single channel/module) there are two resistance levels (A or B) for CR function. Both states A/B use the same range. You can select A (CRL1 or CRH1) or B (CRL2 or CRH2) through

A/B key on the module’s keypad. Slew rate determines the rate at which

ENTER key.

3-7

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

load level changes from one load level state to another.

Slew Rate (Rise, Fall A/µS)

Slew rate in constant resistance mode is programmed in Amps/second.

3.5.3 Constant Voltage Mode

Figure 3-7 Constant Voltage Mode

In CV mode the Load will sink current to control the voltage source in programmed value. In some modules (single channel/module) there are two voltage levels (A or B) for CV function. You can select A (CV1) or B (CV2) through There are two response speed of CV modes: fast and slow. The fast/slow respond speed means the slew rate of current change.

Voltage & Current Range (High)

The voltage and current range of CR mode is high range.

A/B key on the module’s keypad.

3.6 Load Synchronization

The Chroma 6314/6312 multiple electronic load mainframes contain eight and four load channels respectively. The channel on/off or change of load timing is important. You can set module change synchronously through SYNC RUN in configuration setting. If a channel is set at SYNC RUN ON, it means that channel on/off or change of load level is synchronized with other Load modules. In other cases channel on/off can be controlled only by the module’s

LOAD key.

3-8

Operation Overview

3.7 Measurements

Each module measures current and voltage of the UUT. The sampling rate is about 12 mS. Voltage and current measurements are performed with a 15-bit resolution of full-scale ratings.

3.8 Slew Rate & Minimum Transient Time

Slew rate is defined as the change in current over time. A programmable slew rate allows a controlled transition from one load setting to another to minimize induced voltage drops on inductive power wiring, or control induced transients on a test device. If the transient from one setting to another is large, the actual transient time can be calculated by dividing the current transition by the slew rate. The actual transition time is defined as the time required for the change of input from 10% to 90% or from 90% to 10% of the programmed excursion. If the transition from one setting to another is small, the small signal bandwidth of Load will limit the minimum transition time for all programmable slew rates. Because of the limit, the actual transition time is longer than the expected time based on the slew rate. Therefore, both minimum transition time and slew rate must be considered in the determination of actual transition time. The minimum transition time is from 24 µS to 6 mS, which depends on slew rate setting.

3.9 Start/Stop Sink Current

In the simulation of transient characteristics of load to UUT, the critical problems are when and how the Load starts sinking current to UUT. You may set the conducting voltage Von to solve the problems. The Load will start or stop sinking current when the output voltage of UUT reaches the Von voltage. You can start sinking current when setting is load ON, and the input voltage of the module is over Von voltage, but stop sinking when load OFF, or the input voltage below Von voltage. For start and stop sinking current refer to Figure 3-7 and 3-8 separately.

There are two operation modes for Von control. One is latch, and another non-latch. Latch means that when voltage is over Von voltage, Load will start sinking current continuously in spite that input voltage drop is below Von voltage. Non-latch means that when input voltage is below Von voltage, Load will stop sinking current. The Von voltage and operation mode of Von is set in configuration.

3-9

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Figure 3-8 Start Sinking Current (Von Non-Latch)

Figure 3-9 Stop Sinking Current (Von Non-Latch)

3.10 Short On/Off

Load module can simulate a short circuit at its input by setting the load on with full-scale current. The short circuit can be on/off at the front panel or via remote control. There are two operations for controlled by key. They are selected in configuration. The SHORT key will be enabled only when Load is ON.

3-10

SHORT key on the front panel. One is toggled on/off, and another

Operation Overview

Toggled on/off means pressing SHORT once to enable short circuit, and again to disable. Control by Key means pressing SHORT and holding it to enable short circuit, and releasing it to return to normal operation.

The actual value of electronic short is dependent on the mode and range that are active when the short is turned on. In CC mode it is equivalent to the programming of 110% or so full-scale current about 30mS for the present current range, and then goes to rating current. In CR mode it is equivalent to the programming of the minimum resistance for the present resistance range. In CV mode it is equivalent to the programming of zero voltage. Turning on the short circuit does not affect the programmed setting, and Load input will return to the previously programmed values when the short circuit is turned off.

Note that turning on the short circuit may cause the Load to sink so much current to trig protection circuit, and that will turn off the Load.

3.11 Load On/Off

A module’s input can be toggled on/off through the ON/OFF key on the front panel of Mainframe, or the LOAD key on module, or the remote control. The on/off change of input is done according to the slew rate.

Turning off the load does not affect the programmed setting. The load will return to the previously programmed values when the Load is turned on again.

3.12 Protection Features

Each load module includes the following protection features: Overvoltage, Overcurrent, Overpower, Overtemperature, and Reverse Voltage.

The appropriate bits in the Mainframe’s statue registers are set when any of the protection features mentioned above is active. Besides, the Load’s buzzer will produce beep sound to inform you till protection status is reset. When any protection occurs, it will cause the Load input to be turned off.

• Overvoltage

The overvoltage protection circuit is set at a level slightly above the voltage range specified in the specification of the Load. The overvoltage (OV) and voltage fault (VF) status register bits are set when the OV condition occurs. They will remain set till they are reset. The Load module will display ovP when overvoltage protection occurs.

• Overcurrent

When Load is operating in CR or CV mode, it is possible for a module to attempt to sink current more than it is rated for. The limit level of current is set at a level slightly above the current of the Load. The overcurrent (OC) and current error (CE) status register bits are set when the OC condition occurs, and will remain set till they are reset. The Load module will display oCP when overcurrent protection occurs.

3-11

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

• Overpower

The overpower protection circuit is set at a level slightly above the power range specified in the specifications of the Load. The overpower (OP) and power error (PE) status register bits are set when the OP condition occurs, and will remain set till they are reset. The Load module will display oPP when overpower protection occurs.

• Overtemperature

Each Load has an overtemperature protection circuit, which will turn off the load if internal temperature exceeds safe limit. The overtemperature (OT) and temperature error (TE) status register bits are set when the OT condition occurs, and will remain set till they are reset. The Load module will display otP when overtemperature protection occurs.

• Reverse Voltage

The Load conducts a reverse current when the polarity of UUT connection is not correct. The maximum safe reverse current is the same as the rated current of Load. If the reverse current of UUT is over the rated current of Load, the Load may be damaged. If a reverse voltage condition is detected, you must turn off power to UUT immediately, and make a correct connection. The reverse voltage (RV) and voltage fault (VF) status register bits are set when the RV condition occurs, and will remain set till they are reset. The Load module will display rEv when reverse voltage protection occurs.

All of the protection features will latch when they are tripped. When any protection occurs the module will turn off the load input, and produce beep sound till you remove the condition and reset protection by pressing

a CAUTION

To protect the electronic Load from possible damage, the input voltage must not exceed the maximum input voltage rating specification. Besides, Load + terminal potential must be more than − terminal potential.

LOAD key on the module.

3.13 Save/Recall Setting

The setting of the electronic Load for all channels can be saved and recalled for use in various test setups. This simplifies the repetitive programming of different things. The present setting of mode parameters (CC, CR, CV), programs and power on status (DEFAULT) can be saved in the EEPROM using file using RECALL key. The SAVE and RECALL keys affect all channels simultaneously.

SAVE key. Later you can recall the settings from the specified

3.14 Program

The program feature is so powerful. It allows you to simulate various test conditions.

3-12

Operation Overview

There are ten programs in the electronic Load. Each program has ten sequences. The setting mapping of program sequence to file is one to one. It means that program 1, sequence 1 maps to file 1, and program 3, sequence 4 maps to file 24. For setting and running the program please refer to 4.2.3 and 4.2.4.

3-13

Local Operation

4. Local Operation

4.1 Introduction

This chapter describes how to operate the electronic load from the local panel in details. The descriptions include: Mainframe panel control, Module panel control and indicators.

4.2 Local Operation of Load Mainframe

In order to use the front panel keys to control the electronic load, local operation must be in effect. Immediately after power is applied, local operation will be in effect. When local operation is in effect, you can select a channel, and use the display as well as keypad on the front panel to control the Load. The display of Mainframe can be used to view the programmed setting of a selected channel. The input voltage/current is displayed on module’s display. The mainframe will scan module type at power-on, and memorize it for channel setting.

LNotice

When you edit setting, the display will blink setting, and let you know that the active setting is to be edited or selected.

In the remote state, the keys on the front panel will have no effect. Only the remote controller can program the Load. The display of module will show the present input voltage and current readings or the last display while the local state is in effect. The display of the Mainframe will show REMOTE message.

LNotice

In the setting of load module level the resolution of current, voltage, resistance and slew rate setting will be different from the entered values. The displayed or stored value of setting will be the actual value of D/A programmed in the load module. The current, voltage and slew rate setting will be degraded as low values are entered. The resistance setting will be degraded as higher values are entered.

4-1

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Figure 4-1 Front Panel of Mainframe

1. Line switch Turn the ac power on/off.

2. LCD display Display channel information normally.

3. Channel indicator Indicate the active channel settings.

4. Function keys

CHAN To select a channel for settings.

MODE To select a mode for settings.

PROG To select a program for settings or running.

CLEAR To clear the digit entered from keypad. This key lets you

correct wrong digits before they are entered.

RECALL To recall the saved settings from EEPROM, and all channel’s

settings from specified files (1 to 101). Recalling file 101 means to recall the factory default settings. Recalling program is from PROG, number 1 to 10.

SAVE To save all of the present mode settings of all channels in the

specified files (1 to 100). Saving program is from 1 to 10. Saving DEFAULT is to save the status of all channels for the next time the electronic Load is turned on. All saved settings are stored in EEPROM, and will not be lost when ac power is cycled.

SPEC To select specification data for editing, or to enable SPEC

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Local Operation

function.

CONF To select configuration data for editing.

5. Entry keys

▲ ▼ They let you scroll through choices in a parameter list that is

applied to a specific command. Parameter lists are circular. You can return to the starting position by pressing either of the keys continuously.

ON/OFF It toggles the output of the electronic Load between on and

off states if channel SYNC. RUN is set at on.

ENTER It executes the entered value or the parameter of the presently

accessed command. The parameters you have entered with

other keys are displayed but not entered into the Load until you

press this key. Before pressing ENTER you can change or

abort anything previously entered into the display.

SHIFT It enables a shifted key to function (LOCK, SYS). When

in remote control state, this key acts as a local key.

0 – 9 They are used for entering numeric values.

. It is a decimal point.

4.2.1 Selecting the Channel

The CHAN key is used to select one of the channels for local control. See channel number in

2.3.1. To edit channel settings, you must select a channel first. If the channel does not exist, it cannot be selected. If no module is installed in the mainframe, the display will show DUMMY

CHANNEL. When you press CHAN, the channel number you want to select will automatically increase to the next existing channel. The mainframe will scan the module type at power-on, and memorize it for channel editing.

4.2.2 Setting the Operation Mode

The MODE key and ▲ , ▼ keys are used to select modes of channels for local control.

Press MODE to display the selected channel’s active mode. The active mode can be changed

by use of ▲ or ▼ key followed by the ENTER key. The sequence of mode selection after pressing ▼ key is as follows:

CCL -> CCH -> CCDL -> CCDH -> CRL -> CRH -> CV go back to CCL.

Press ENTER key to select mode and confirm setting.

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

LNotice

The eight operation modes of load module settings stored in the mainframe are independent. Changing any mode setting won’t affect others. Storing the settings to EEPROM (1-100) will store only one mode setting.

The load levels and slew rate are common to CC, CR modes. CV mode sets voltage level and response speed. There are two level settings for single channel/module of CC, CR, and CV modes. They can be switched by the module’s A/B key.

Setting CC Values

There are four modes for CC operation: CCL, CCH, CCDL, CCDH. The current levels are programmed in Amps. The slew rate levels are programmed in milliamps/µS at low range and in Amps/µS at high range. The timings are programmed in millisecond. The setting buffers of four CC modes are independent. Changing the operation range doesn’t affect the settings of other ranges. The following examples show how to set the CC values of Load module for model number 63103. Before observing the examples, select channel first.

1. Select Range/Function

Press MODE, and use ▲ or ▼ key to select CCL followed by ENTER key.

CCL: static low range CCH: static high range CCDL: dynamic low range CCDH: dynamic high range

MODE SELECT

CCL

2. Set Current Level There are 4000 discrete steps from 0 to full scale in each range. Set level1 (A) current level to 2 amps by pressing 2 , ENTER . Set level2 (B) current level to 1 amp

by pressing 1 , ENTER.

CCL1: 1.9995A

CCL2: 0.9990A

3. Set Slew Rate There are 250 discrete steps in each range. Set the rise 50 mA/µS and fall slew rates to 50 mA/µS by pressing 5 , 0 , ENTER for rise and 6 , 0 , ENTER for fall slew rate.

CCL : 50mA/µS

CCL : 60mA/µS

4. Set DYNAmic Function Periods

Dynamic function has period T1 and T2 to be set. Set dynamic period 1 to 0.1 mS, period 2 to 0.2 mS by pressing 0 , . , 1 , ENTER and 0 , . , 2 , ENTER. The range of Dynamic period is from 0.025 µS to 30 Sec.

CCDLT1: 0.100mS

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Local Operation

CCDLT2: 0.200mS

LNotice

If you press ENTER key, and the blinking data do not go to next, change configuration setting Enter Data Next to YES.

Setting CR Values

The CR values for the selected channel are programmed by pressing MODE, ▲ and

ENTER keys. The resistance values can be programmed in low voltage (CRL) or high

voltage (CRH) range. The current is always in high range. ALL resistance levels are programmed in ohms. The slew rate is in A/µS.

The following examples illustrate how to set CR values of Load module for model number

63103.

1. Select Range

Press MODE and use ▲ or ▼ key to select CRL followed by ENTER key.

MODE SELECT

CRL

2. Set Resistor Level

There are 4000 discrete steps from 0 to full scale in each range. Set the main resistor level1 (A) to 2 ohms by pressing 2 , ENTER. Set the level2 (B) resistor level to 1 ohm by pressing 1 , ENTER.

CCL1: 2.000Ω CCL2: 1.000Ω

3. Set Slew Rate

There are 250 discrete steps in each range. Set the rise and fall slew rates to 0.1 A/µS by pressing . , 1 , ENTER for rise slew rate and . , 2 , ENTER for fall slew rate.

CRL : 0.10A/µS

CRL : 0.20A/µS

Setting CV Values

The CV values for the selected channel are programmed by pressing MODE, ▲ and

ENTER keys. The voltage values can be programmed in one range. The voltage levels

are programmed in volts. And the response speed is programmed in fast/slow operations.

The following examples illustrate how to set CV values of Load module for model number

63103. Before observing the examples, select channel first.

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

1. Select Range

Press MODE and use ▲ or ▼ key to select CR followed by ENTER key.

MODE SELECT

2. Set Voltage Level

There are 4000 discrete steps from 0 to full scale in each range. Set the main voltage level1 (A) to 5 volts by pressing 5 , ENTER. Set the level2 (B) voltage level to 6 volts by pressing 6 , ENTER.

CV 1: 5.00V CV 2: 6.00V

3. Set Response Speed

There are two response speeds for CV mode, fast and slow for different UUTs testing. Refer to Figure 4-2 and 4-3 for transfer functions.

CV RESPONSE

1:FAST 2:SLOW

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Figure 4-2 CV Response Transfer Function (FAST)

Local Operation

Figure 4-3 CV Response Transfer Function (SLOW)

4.2.3 Setting the Program

The electronic Load is able to select customized basic tests, and link them into a program test for automatic execution.

The PROG key is used to select program, or recall program for local control. There are ten programs (1-10). Each program has ten sequences to map files from 1 to 100. The program 1 maps files from 1 to 10. Table 4-1 shows the relationship between the program sequence and the corresponding file.

Program 1 Sequence No. 1 2 3 4 5 6 7 8 9 10

Corresponding File No. 1 2 3 4 5 6 7 8 9 10

Program 2 Sequence No. 1 2 3 4 5 6 7 8 9 10

Corresponding File No. 11 12 13 14 15 16 17 18 19 20

: :

Program 10 Sequence No. 1 2 3 4 5 6 7 8 9 10

Corresponding File No. 91 92 93 94 95 96 97 98 99 100

Table 4-1 The Relationship of the Program Sequence and the Corresponding File.

In running a program you must set its corresponding file parameters first. If one program sequence is not enough for you to test the UUT, you can use program chain function to get more sequences.

Press PROG key, and the LCD will display as follows. Press number 1 -10 followed by

ENTER to recall program from EEPROM, or use ▲ , ▼ keys to edit program.

PROGRAM SELECT

No:

1. Setting the Active Channels

The LCD displays the active channels for the program to control. The LED channel indicators will be active if the channel is active. The channel can be active only when it exists and the mode of SYNC. RUN is ON. When the channel is not selected or does not exist, the channel number will not be displayed. Press number 1 to 8 to enable or disable the active channel.

ACTIVE CHANNEL

1 3 5

2. Setting the Program Chain

The chain function of program enables you to chain program so as to get more sequences for testing. Set program chain number to 0 means no program chain. Program chain function

6 7 8

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

can chain itself for loop test, or chain other programs. Press 1 , ENTER to set chain itself for loop test. The default setting is 0.

PROGRAM CHAIN No:

3. Setting the Sequence P/F Delay Time

The sequence Pass/Failure delay time let you set the delay time for P/F checking when load condition changes. The failure status of the sequence will latch when a program is executed. It means that any failure will be memorized even when the UUT becomes stable within the specifications later. The range of P/F delay time is from 0 to 60 seconds. Press 1 ,

ENTER to set the sequence P/F delay time 1 second. The default setting is 0 second.

SEQ.

P/F DELAY

TIME: 1.0Sec

4. Setting the Sequence ON/OFF Time

The sequence ON/OFF time controls the Load input ON/OFF when the program sequence is executed. The range of ON/OFF time is from 0 to 60 seconds.

SEQ. ON TIME TIME:

1.0Sec

Press 0 , ENTER keys to set OFF time 0 second. The default setting is 0 second for OFF time.

SEQ. OFF TIME TIME:

0.0Sec

5. Setting the Sequence Mode

There are three modes to control the method of sequence execution.

SKIP : Skip the sequence. Load will not change input status. AUTO : Use ON/OFF time to control Load input on/off. When ON/OFF time passes, the Load will get to the next sequence automatically.

MANUAL : Use ▲ or ▼ or number 0 to 9 to control the execution

sequence. Pressing number key lets you select a random sequence number to execute.

Pressing 0 means to go to sequence 10.

Press 2 , ENTER keys to set sequence 1 manual mode. You must set ten sequence settings for one program. The default setting is SKIP.

SEQ

1: SKIP=0

AUTO=1 MANUAL=2

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Local Operation

6. Setting the Short Channel

When the sequence mode is not SKIP, you must set the short channel & time. The short channel is selected as active channel. For selection of short channel press number 1 to 8 to enable or disable the corresponding module short function.

SEQ. 1 SHORT CH. 1

3 5 6 7 8

7. Setting the Short Time

The range of short time is from 0 to 30 Sec. The short time must be ≤ SEQuence ON time. If the short channel is not selected or the short time is set to 0 Sec., the selected channel will not short. The default setting is channel 0 and 0 Sec.

SEQ. 1 SHORT TIME= 0.0S

4.2.4 Running the Program

Press ON/OFF to run program when program function is selected. The LED channel indicators will be active if channel is active. The display shows as follows.

PROG. 1 SEQ. 1 [ON][KEY][PASS]

The upper line displays the executed program and sequence number while the lower line Load, key and test result status.

ON/OFF : It shows Load input status. KEY : It displays when MANUAL mode is active and waiting key input. PASS/FAIL : It shows the test result compared with SPEC setting.

When program is executed, the setting of sequence will recall files from EEPROM, and the SPEC function is always ON. All function keys are disabled until ON/OFF is pressed to stop program execution, or program run finishes. When program run stops or finishes, the LCD will display as follows.

PROGRAM OFF RESULT :PASS

It means that in the test of program all sequences have passed. If the test fails, LCD will show as follows.

PROG. XX : 1 2 3 4 5 6 7 8

9 10

PROG. XX stands for the file number of program fail, 1 to 10. Besides, 1, 2, 3...10 shown

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

by LCD stand for failed sequence numbers. The failed sequences are the results of all failed channels. The LED of channel will show the failed channel. In the test by program chain,

if the failed program files are more than one set, you can use ▲ ▼ to read the contents

of failed programs.

4.2.5 Setting the Specification

The SPEC key is to enable/disable SPEC function, or select the settings of specifications. The Load will compare measurement data with the set specifications of HIGH and LOW boundary when the SPEC TEST is ON, and the LED, GO/NG, is lighted on the module panel. To set specifications for module, you must go to mode editing by pressing MODE, ENTER keys, and then SPEC key. In other operation modes, pressing SPEC is to enable/disable SPEC TEST function. The SPEC TEST ON/OFF function is global. It means that all modules installed on the Mainframe will do GO/NG comparison. The specification unit of CC, CR modes is volt while that of CV mode current. There are three levels for each mode: CENTER, HIGH and LOW. The CENTER level must be set by the value of channel input reference level. The HIGH and LOW levels can be set by value or percentage selected in configuration SPEC. ENTRY MODE. The HIGH/LOW percentage range is from 0 to 100%.

Press MODE, ENTER, SPEC to set the specifications of CC mode. Press 5 , ENTER to set CENTER level 5V.

VOLTAGE SPEC.

CENTER: 5.0000V

Press 5 , ENTER to set HIGH level 5%.

VOLTAGE SPEC. HIGH PCet: 5.0%

Press 5 , ENTER to set LOW level 5%.

VOLTAGE SPEC.

LOW Pcet: 5.0%

The default setting of HIGH and LOW is 100%. The CENTER value is half of the range. For selection of the specifications set by Value or Percentage please refer to 4.2.6.

4.2.6 Setting the Configuration

The electronic Load provides useful features such as Von point, Current limit, Sync run, etc. To use these powerful features, you must set relevant parameters in accordance with application needs by the use of configuration setup. This procedure is only needed for initial setup of a test operation. The configuration of each channel is stored independently in the

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Local Operation

EEPROM of Mainframe. To set configuration you must press CONF .

Set the voltage range of CC mode. There are two voltage ranges for CC mode. High range is for high voltage and low range for low voltage so as to get better voltage resolution. The default setting of Vrange is HIGH.

CC Vrange Select 1:HIGH 2=LOW

Set Von point. Von is the conduction voltage level when the electronic Load starts to sink current and the UUT output reaches the Von voltage. The default setting of Von voltage is 1V.

Von POINT VOLTAGE: 3.50V

Set Von latch. There are two operation modes for Von control. Von latch ON means that Load will sink current continuously when Von voltage reaches. Von latch OFF means that Load will stop sinking current when UUT voltage is under Von voltage. The default setting of Von latch is OFF. Figure 4-4 and 4-5 show Von LATCH ON and OFF current waveform separately.

Von LATCH 1:ON

2:OFF

a CAUTION

If Von is set to 0V, the Load circuit will be ON in spite of no UUT. This will get overshoot spike. If a UUT is applied, the overshoot may damage the UUT in spite of small setting of Load current. So, do not set Von to 0V.

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Figure 4-4 Von LATCH ON Current Waveform

Figure 4-5 Von LATCH OFF Current Waveform

Set CV mode CURR_LIMIT. This function will limit the current sinking of Load to protect UUT in CV mode. The default setting of current limit is the maximum Load current.

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Local Operation

CV CURR_LIMIT CURRENT:20.000A

Set sign of voltage for display. The electronic Load will show minus sign of the voltage if you select MINUS. It will not show any sign if you select PLUS. The default setting is PLUS. Selecting MINUS of SIGN OF VOLT. will occupy one digit. The displayed digits are four.

SIGN OF VOLT. 1:PLUS 2:MINUS

Set the specifications of entry mode. The specifications of Load can be set by VALUE or Percentage for HIGH and LOW data. The percentage values refer to CENTER value of specification. The default setting of SPEC entry mode is percentage.

SPEC. ENTRY MODE 1:VALUE

2:PCet

Set SYNChronous run mode. When SYNC run is set at ON, the Load on/off is controlled by ON/OFF key on the Mainframe. Under other circumstances the Load on/off is simply controlled by LOAD key on the module. The default setting of SYNC run is ON.

SYNC. RUN

1:ON 2:OFF

Select data entry mode by ENTER. If ON is selected for data entry, the setting will go to the next one after pressing ENTER. If OFF is selected for data entry, the setting will remain the same line for you to change it again and again. The default setting is ON.

Enter Data Next 1:ON

2:OFF

Select module SOUND on/off. When you press the key on the module, it will produce a sound if sound = ON. The default setting of sound is ON.

SOUND 1:ON

2:OFF

Select Load module input status when it is powered ON. If ON is selected, the module will be active according to AUTO LOADON mode setting. The default setting of AUTO LOADON is OFF.

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

AUTO LOADON 1:ON

2:OFF

Select the load on mode of module if AUTO LOADON is ON. If LOAD is selected, the Load module will be active as DEFAULT setting. If PROG is selected, the module will be active as the program saved last time. The default setting of AUTO LOADON MODE is LOAD.

AUTO LOADON MODE

1:LOAD 2:PROG.

Select Load module rotary knob type. There are two types for you to change load module data with the rotary knob.

UPDATED means that the data changed by the rotary knob will be updated on the load module. When you press LOAD key to set load module ON, new data will be executed. OLD means that the data changed by the rotary knob will be invalid and the load module data remain the same if the load module is ON again. For the operation of rotary knob please refer to 4.3.1 and 4.3.2.

LOADON KNOB TYPE

1=UPDATED 2=OLD

Select short key mode. Set SHORT key mode for Load module. The default setting of SHORT mode is TOGGLE.

SHORT 1:TOGGLE

2:HOLD

Display the versions of load module & mainframe.

LOAD MODEL 63101 Version: 3103

Press ▼ key.

FRAME BOOT PROG.

Version: 1.40

Press ▼ key.

FRAME DOWN PROG. Version: 1.21

Press ▼ key.

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Local Operation

FRAME EXEC PROG. Version:

1.41

4.2.7 Recalling Files

Press RECALL to recall files from 1 to 101. Files 1 to 100 are user data. File 101 is factor set state. After a file is recalled, the display will go to mode editor for you to edit or view the file. By pressing RECALL the display will show the file No. last recalled. The default file No. is 2 when the mainframe is powered on.

Press RECALL , 3 , ENTER to recall the number 3.

RECALL FILE FILE NO:

The data of all channels will be recalled when you execute file recall.

4.2.8 Saving File/Default/Program

There are 100 file locations (1 to 100) for you to save files. Press SAVE, 2 , 0 , ENTER to save a file to location 20.

SAVE FILE FILE NO:

Press SAVE , ▼ until the display shows as follows. The DEFAULT states are used for

electronic Load after power-on. Press 1 to save DEFAULT to EEPROM.

SAVE DEFAULT 1:YES

2:NO

Press SAVE, ▼ until the display shows as follows. Press 1 to save program.

SAVE PROGRAM 1:YES

2:NO

4.2.9 Going To Local

The SHIFT key operates as local key, LCL when electronic Load is in remote mode. You can press LCL key to go to local operation when Load is in remote state. In local operation SHIFT key operates as shift key.

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

4.2.10 Lock Operation

The lock operation disables any setting for change. When data are locked, all settings cannot change. The operation of ON/OFF and SPEC keys will not be affected by lock function. Press SHIFT and . simultaneously to enable/disable lock function. This is a toggle key to enable/disable lock function.

4.2.11 Setting System and RS-232C Connection

The parameters of RS-232C are set in the system. There are three parameters for you to set: Baud Rate, Parity Check and Data Bit number. Press SHIFT and 0 simultaneously to set system data.

Baud Rate : 0:600, 1:1200, 2:2400, 3:4800, 4:9600 bits/second. Parity Check : 0:EVEN, 1:ODD, 2:NONE. Data Bit : 0:7 bits, 1:8 bits.

The RS-232C connector on the rear panel of Mainframe is a 9-pin connector (DB-9, male connector). The RS-232C connector bus signal is defined as follows.

RS-232C Connector

Pin Number Input/Output Description

1 Output 2 Input 3 Output 4 Output DTR 5 Output GND 6 Input DSR 7 NC 8 NC 9 NC

Note: Pin 1 (+5V) is for 6310 series Remote Controller only.

+5V

R×D T×D

4.2.12 Connecting the GO/NG Output Port

The GO/NG output port on the rear panel of Mainframe is a 15-pin connector (DB-15, female connector). The GO/NG signals are TTL active low to indicate NG. They are defined as follows.

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GO/NG Output Port Connector

Pin Number Channel No. Description

1 1 H:PASS or SPEC. OFF, L:FAIL 3 2 H:PASS or SPEC. OFF, L:FAIL 5 3 H:PASS or SPEC. OFF, L:FAIL 7 4 H:PASS or SPEC. OFF, L:FAIL

9 5 H:PASS or SPEC. OFF, L:FAIL 11 6 H:PASS or SPEC. OFF, L:FAIL 13 7 H:PASS or SPEC. OFF, L:FAIL 15 8 H:PASS or SPEC. OFF, L:FAIL

8 Enable H:SPEC. OFF, L:SPEC. ON

Note: Pin 2, 4, 6, 10, 12, 14 are connected to GND.

4.2.13 Setting the GPIB Address

Local Operation

Please refer to the second part of this manual, Chroma 6310 Programming Manual. GPIB address displays after RS-232C parameters in the system. You can use this feature to check GPIB address.

GPIB ADDRESS 1

4.3 Local Operation of Load Module

There are two kinds of panels in Load module. One is a single channel/module panel. The other is a double channels/module panel. There are four keys for each of the module panels. Only one key is different from these keypads. Figure 4-6 shows the single channel/module front panel.

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

4.3.1 Local Operation of Single Channel/Module (Panel A)

Figure 4-6 Single Channel/Module (Panel A)

1. 7-segment LED Display It displays the measurement Voltage and Current. Each display has five digits.

2. 7-segment Display Unit Indicators They indicate the 7-segment display measurement unit V and I.

3. Operation Mode and GO/NG indicators They indicate the operation modes of CC, CR, CV and GO/NG in the Load module. GO/NG LED indicator has two color. The green LED is on for GO (pass) while the red for NG (fail). The GO/NG LED is off when SPEC test is OFF.

4. Keypad Indicators The four LEDs indicate the keypad status. Each LED shows the key status under the LED. Refer to the next paragraph for LED on/off status.

5. Keypad There are four keys for you to select/control the operation of Load module. The A/B key is used to select static load level. Its LED will be on when the Load is in level1 (A) state and off when in level2 (B) state or others. The A/B key can be used to select Fix mode for rotary knob setting too. Please refer to 4.3.3.

The STATIC/DYNA key selects STATIC/DYNAmic mode. Its LED will be on when the Load is in DYNAmic mode. DYNAmic operation is only effective in CC mode. In other modes this key has no response.

The SHORT key enables Load to simulate short function. Its LED will be on when the short function of Load is enabled. It operates only when the Load input is enabled. It

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Local Operation

will not respond if Load input is not enabled.

The LOAD key controls the on/off of the Load module input. Its LED will be on when the Load input is enabled.

6. Vsense Connectors These two connectors are Vsense measurement input. Refer to 2.5.2 for remote sense connections.

7. Rotary Knob The knob changes the level when the Load input is enabled. Rotating the knob clockwise will increase level whereas counterclockwise decrease level. When you change Load level with the knob, the setting of Mainframe will not change. The changed Load level will hold unless the same setting is changed on Mainframe.

8. Load Terminals They are input connectors of the Load for connecting to the UUT. Each of them can carry 40 Amps at most. If the current is over 40 Amps, you must connect two or more terminals for load connection. The PLUS (+) must be connected to the high potential of UUT. Refer to 2.5.1 for load input connection.

Examples

The following examples illustrate how to operate the module in CC mode.

1. Select Level1 (A) and Level2 (B) There are two levels of each mode for you to select in static function. The level1 (A) and level2 (B) can be selected through A/B key. Press A/B key to select current level1

or level2. When level1 (A) is selected, the LED of A/B key will be active. Press this key again to select level2 (B), and the LED will be inactive.

2. Select Dynamic Function There are two functions for CC mode: STATIC and DYNAmic. The two functions can be selected through STATIC/DYNA key. Press STATIC/DYNA key to select Dynamic function. Press this key again to select static function. When Dynamic function is selected, the LED of DYNA will be active.

3. Short the Load Input The Load can simulate a short circuit across the input. The short circuit will be enabled when SHORT is pressed, and Load input is active (on). If the input is shorted, the

LED of short will be active. The SHORT key can be set in configuration of toggled on/off mode, or active by pressing mode.

4. Load Input On/Off The input can be toggled on or off by pressing LOAD. When the input is turned on, the LED of load will be active.

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

4.3.2 Local Operation of Double Channels/Module (Panel B)

Figure 4-7 Double Channels/Module (Panel B)

The double channels/module means that there are two channels for one module. Each channel of module is isolated from the other. One set of display/keypad for the module can control both channels. The left channel is called channel L while the right one channel R. The 7-segment LED displays one or two channel status. The keypad and rotary knob can control both channels through R/L key.

1. 7-segment LED Display The 7-segment LED displays measurement V/I of single or double channels. Each display has five digits.

2. The Channel LED Indicators There are two LEDs indicating the active right and/or left channel(s) of Load module. When the LED of channel R is on, the 7-segment display, mode, GO/NG indicators, and keypad are active on channel R. Channel L has the same function as channel R when its LED indicator is on.

When the indicators of channel R and L are on, the 7-segment display selectively shows both channels’ V or I. The indicators and keys, STATIC/DYNA, SHORT, LOAD in operation mode will be disabled when both channels are selected.

3. 7-segment Display Unit Indicators

They indicate the 7-segment display measurement unit V and/or I.

4. Operation Mode and GO/NG Indicators When the LED of channel R or L is on, the operation and GO/NG LED has the same function as single channel/module. When the LEDs of channel R and L are on, the LED of operation mode indicators will be disabled (off). The GO/NG LED will be red

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Local Operation

when the check of any channel SPEC fails. It will be green when the check of both channels SPEC is all right.

5. Keypad Indicators There are three LEDs indicating the keypad status. Each LED shows the key status. It has the same function as single channel/module. The LED of LOAD will be active when any input of channel L or R is on.

6. Keypad There are four keys for you to select /control the operation of Load module. The R/L key is used to select the display of 7-segment LED, and the indicators of channel R

and/or L. The R/L key can be used to select Fix mode for rotary knob setting too. Please refer to 4.3.3.

7. Vsense Connectors These four connectors are for Vsense measurement input. The two connectors on the right are for right channel while those on the left for left channel. Refer to 2.5.2 for remote sensing connections.

8. Rotary Knob The knob has the same function as single channel/module when channel R or L is selected. If the indicators of channel R and L are on, the knob will be disabled.

9. Load Terminals They are input connectors of the Load for connecting to the UUT. The two terminals on the left are for input of left channel while those on the right for that of right channel. The PLUS (+) sign of the input of each channel must connect the high potential. Refer to 2.5.1 for load input connections.

Examples

The following examples illustrate how to select the double channels/module in CC mode.

There are two channels/module, so you have to select right or left channel for display & keypad. When channel R and L are selected, only R/L key is enabled. Other keys are disabled. During power-on, the pre-selected channel is channel L. It means that the 7-segment display, indicators and keypad are active at channel L. The double channels/module has the same function as single channel/module. But it cannot select level 2(B).

1. The display sequence of R/L key is channel L -> channel R -> channels L+R display V

-> channels L+R I back to channel L.

2. Select Dynamic Function The static and dynamic function can be selected through the STATIC/DYNA key. Press this key to select Dynamic function, and press again to select static function. When Dynamic function is selected, the LED of DYNAmic will be active.

3. Short the Load Input

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

The Load can simulate a short circuit across the input. The short circuit can be enabled when SHORT is pressed, and Load input is active. When the input is shorted, the LED of short will be active. The SHORT key can be set in configuration of toggled on/off mode, or active by pressing mode.

4. Load Input On/Off The input can be toggled on or off by pressing LOAD. When the input is turned on, the LED of LOAD will be active.

4.3.3 Online Change Level

Load module provides you with two ways of online change level. They are convenient for you to change load directly with the rotary knob in LOADON. These two operation modes are described below.

Ratio Mode: In LOADON change load with the rotary knob. When the rotary knob rotates clockwise, it means as follows. CC mode: raise the current value. CR mode: raise the resistance value. CV mode: raise the voltage value.

When the rotary knob rotates counterclockwise, it means as follows. CC mode: lower the current value. CR mode: lower the resistance value. CV mode: lower the voltage value.

The modulation is dependent on the rotating speed of the rotary knob.

Fixed Mode: In LOAD ON press A/B key (single channel/module) or R/L key

(double channel/module) for over 2.5 seconds to enter this operation mode. Now V, I will be displayed in fixed positions in this mode. Press A/B /R/L or STATIC/DYNA key to shift a digit left or right. The resolution nearest to that digit will begin to change. The changed digit will be displayed glisteningly, and modulated by the rotary knob. To exit from this mode press A/B or R/L key for more than 2.5 seconds.

LNotice

The value of mainframe setting will not be changed if the setting is changed by the rotary knob. Therefore, when you change the value of setting with the rotary knob, the value of load module setting and that of mainframe setting will not be the same.

4-22

PART 2

Programming

General Information for Programming

5. General Information for Programming

5.1 Introduction

This section describes how to program the 6310 series electronic load remotely from a GPIB controller or RS232C. The command set introduced here can be applied to all electronic loads of 6310 series, including 63101, 63102, 63103, etc. equipped with optional GPIB cards or standard equipment, RS232C.

Either GPIB or RS232C can be used at one time. They cannot be used simultaneously. If GPIB is used first in remote control, RS232C will be disabled unless the machine is reset, and vice versa.

5.2 DIP Switches on the GPIB Card

5.2.1 GPIB Address

Before programming the electronic load remotely via a GPIB computer, you need to know the GPIB address. Each device connected to the GPIB interface has a unique address assigned to it. Such address allows the system controller to communicate with individual devices. Setting GPIB address of an individual mainframe, the Chroma 6312 or 6314, is done with an 8-bit DIP switch on a GPIB card at its rear panel. Five bits, from A1 to A5, are GPIB address bits, which offer addressing space from 0 to 30. For details please refer to the following illustration and table.

SHIELD GND

A1 A2 A3 A4 A5

Address A5 A4 A3 A2 A1 Address A5 A4 A3 A2 A1

0 0 0 0 0 0 16 1 0 0 0 0 1 0 0 0 0 1 17 1 0 0 0 1 2 0 0 0 1 0 18 1 0 0 1 0 3 0 0 0 1 1 19 1 0 0 1 1 4 0 0 1 0 0 20 1 0 1 0 0 5 0 0 1 0 1 21 1 0 1 0 1 6 0 0 1 1 0 22 1 0 1 1 0 7 0 0 1 1 1 23 1 0 1 1 1 8 0 1 0 0 0 24 1 1 0 0 0 9 0 1 0 0 1 25 1 1 0 0 1 10 0 1 0 1 0 26 1 1 0 1 0 11 0 1 0 1 1 27 1 1 0 1 1

A8:

MASTER/SLAVE

A7:

PON-SRQ

A6:

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

12 0 1 1 0 0 28 1 1 1 0 0 13 0 1 1 0 1 29 1 1 1 0 1 14 0 1 1 1 0 30 1 1 1 1 0 15 0 1 1 1 1

Table 5-1 GPIB address

5.2.2 Other DIP Switches

The remaining bits on the DIP switch, A6-A8, preset the electronic load mainframe 6312 or 6314 to the following functions:

Bit Meaning Preset Description

A6 Frame LOAD ON

Link A7 OFF It must be “OFF”. A8 SHIELD GND OFF It is the selection for enabling shield ground.

OFF When ON is set, two frames can act as LOAD Key

ON/OFF through RS232C port.

5.3 GPIB Capability of the Electronic Load

GPIB Capability Response Interface

Talker/Listener All electronic load functions except for

setting the GPIB address are programmable over the GPIB. The electronic load can send and receive messages over the GPIB. Status information is sent using a serial poll.

Service Request The electronic load will set the SRQ line

true if there is an enabled service request condition.

Remote/Local In local mode, the electronic load is

controlled from the front panel but will also execute commands sent over the GPIB. The electronic load powers up in local mode and remains there until it receives a command over the GPIB. Once the electronic load is in remote mode, REMOTE will be shown on the front panel LCD, all front panel keys except LCL are disabled, and the load module display is in normal metering mode. Pressing LCL key on the front panel returns the electronic load to local mode. Local can be disabled using local lockout, so only the controller or the power switch can return the electronic load to local mode.

AH1, SH1, T6, L4

SR1

RL1

Functions

5-2

General Information for Programming

Device Clear The electronic load responds to the

Device Clear (DCL) and Selected Device Clear(SDC) interface commands. These cause the electronic load to clear any activity that may prevent it from receiving and executing a new command. DCL and SDC do not change any programmed settings.

DCL, SDC

5.4 RS232C in Remote Control

When you use RS232C in remote control, you have to send the remote command of CONFigure : REMote ON then do other command set. When control comes to an end, you have to send the command of CONFigure : REMote OFF of local operation.

The control commands of RS232C are the same as those of GPIB. When the string comes to an end in the command sending of RS232C, <nl> must be added. Its ASCII code is 0A hexadecimal (or 10 decimal).

first in order to let control procedure enter into remote state, and

so as to let control procedure return to the mode

5-3

Introduction to Programming

6. Introduction to Programming

6.1 Basic Definition

GPIB statement includes instrument control and query commands. A command statement sends an instruction to the electronic load, and a query command requests information from the electronic load.

Simple Command

The simplest command statement consists of a command or keyword usually followed by a parameter or data:

LOAD ON

or TRIG

Compound Command

When two or more keywords are connected by colons(:), it creates a compound command statement. The last keyword usually is followed by a parameter or data:

CURRent : STATic : L1 3

or CONFigure : VOLTage : RANGe H

Query Command

A simple query command consists of a keyword followed by a question mark: MEASure : VOLTage?

MEASure : CURRent?

or CHAN?

Forms of Keywords

Every keyword has two forms: Long-Form The word is spelled out completely to identify its function. For instance, CURRENT, VOLTAGE, and MEASURE are long-form keywords. Short-Form The word contains only the first three or four letters of the long-form. For instance, CURR, VOLT, and MEAS are short-form keywords.

In keyword definitions and diagrams, the short-form part of each keyword is emphasized in UPPER-CASE letters to help you remember it. However, the electronic load will accept Volt, volt, voltage, VOLTAGE, volTAGE, etc. without regard to which form you apply. If the keyword is incomplete, for example, “VOL” or “curre”, it will not be recognized.

6.2 Numerical Data Formats

The Chroma 6310 electronic load accepts the numerical data type listed in Table 6-1. Numeric data may be followed by a suffix that dimensions the data. A suffix may be

6-1

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

preceded by a multiplier. The Chroma 6310 makes use of the suffixes listed in Table 6-2 and multipliers listed in Table 6-3.

Symbol Description Example

NR1

Digits with no decimal point. The decimal point is

123, 0123 assumed to be to the right of the least-significant digit.

NR2 NR3 NRf

Digits with a decimal point. 123., 12.3, 0.123, .123 Digit with a decimal point and an exponent. 1.23E+3, 1.23E-3 Flexible decimal form that includes NR1 or NR2 or

123, 12.3, 1.23E+3 NR3.

NRf+

Expanded decimal form that includes NRf and MIN, MAX. MIN and MAX are the minimum and

123, 12.3, 1.23E+3,

MIN, MAX maximum limit values for the parameter.

Table 6-1 Numerical Data Type

Mode Class Preferred Suffix Secondary Suffix Referenced Unit CC CR

Current A Ampere Resistance OHM

Ohm

CV All

All

Amplitude V Volt Time S Second MS Millisecond Slew Rate

A/µS

Amperes/micro Second

Table 6-2 Suffix Elements

Multiplier Mnemonic Definition

1E6

1E3

1E-3

1E-6

1E-9

MA mega

K kilo

M milli

U micro

N nano

Table 6-3 Suffix Multipliers

6.3 Character Data Formats

For command statements, the <NRf+> data format permits entry of required characters. For query statements, character strings may be returned in either of the forms shown in the following table. It depends on the length of the returned string.

Symbol Character Form

crd Character Response Data. They permit the return up to 12 characters. aard Arbitrary ASCII Response Data. They permits the return of undelimited

7-bit ASCII. This data type is an implied message terminator (refer to “Separators and Terminators”).

6-2

Introduction to Programming

6.4 Separators and Terminators

In addition to keywords and parameters, GPIB program statements require the following:

Data Separators:

Data must be separated from the previous command keyword by a space. This is shown in examples as a space (CURR 3) and on diagrams by the letters SP inside a circle.

Keyword Separators:

Keywords (or headers) are separated by a colon (:), a semicolon (;), or both. For example:

 LOAD:SHOR ON  MEAS:CURR?;VOLT?  CURR:STAT:L1 3;:VOLT:L1 5

Program Line Separators:

A terminator informs GPIB that it has reached the end of a statement. Normally, this is sent automatically by your GPIB programming statements. The termination also occurs with other terminator codes, such as EOI. In this manual, the terminator is assumed at the end of each example line of code. If it needs to be indicated, it is shown by the symbol <nl>, which stands for “new line” and represents the ASCII coded byte 0A hexadecimal (or 10 decimal).

Traversing the Command Tree:

 The colon “:” separates keywords from each other which represents changes in branch

level to the next lower one. For example:

CONF:VOLT:ON 5 CONF is a root-level command, VOLT is the first branch, and ON is the second branch. Each “:” moves down command interpretation to the next branch.

 The semicolon “;” allows you to combine command statements into one line. It returns

the command interpretation to the previous colon.

For example: Combine the following two command statements:

RES:RISE 100 <nl> and RES:L1 400 <nl>

Which can be formed into one command line as follows:

RES:RISE 100;L1 400 <nl>

 To return to the root-level form you can

1. Enter a new-line character. This is symbolized by “<nl>” and can be linefeed “LF” or/and end-of-line “EOL”. Or else,

2. Enter a semicolon followed by a colon “;:”.

Please refer to the following.

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

1. (root):VOLT:L1: 30<nl> Starting a New Line returns to the Root.

2. (root):SPEC:VOLT:H 30;

:L 5;:

(root):RES:L1 400;

:RISE 1000;:

6-4

Language Dictionary

7. Language Dictionary

Commands for operating the 6310 Electronic Load remotely are grouped into subsystems. Each command belonging to the same subsystem is arranged in alphabetic order. A syntax chart of the subsystem, which includes the commands belonging to the same group is given. Sub-systems are then ordered alphabetically according to their names in the following sections.

7.1 Common Commands

Common commands defined by the IEEE488.2 standard are generic commands and queries. The first part of the language dictionary covers these commands. Each of them has a leading “*”.

¡F

*CLS

*ESE

* ESE?

*ESR?

*IDN?

*OPC

*OPC?

*RCL

*RDT?

*RST

*SAV

*SRE

*SRE?

*STB?

<NRf>

*CLS Clear Status Command

Type : Device Status Description : The *CLS command executes the following actions :

1. Clear these registers <1> Channel Status Event registers for all channels <2> Channel Summary Event register <3> Questionable Status Event register <4> Standard Event Status Event register

7-1

Programmable DC Electronic Load 6310 Series Operation & Programming Manual

<5> Operation Status Event register

2. Clear the Error Queue

3. If “Clear Status Command” immediately follows a program

message terminator (<nl>), the “Output Queue” and the MAV

bit are also cleared. Syntax : *CLS Parameters : nil

*ESE Standard Event Status Enable Command/Query

Type : Device Status Description : This command sets the condition of the Standard Event Status

Enable register, which determines which events of the Standard

Event Status Event register (see *ESR?)are allowed to set the ESB (Event Summary Bit) of the Status Byte register. A "1" in the bit position enables the corresponding event. All of the

enable events of the Standard Event Status Event register are

logically ORed to cause the ESB (bit 5) of the Status Byte

8 Status Reporting. Syntax : *ESE <NRf> Parameters : 0 to 255 Example : *ESE 48 This command enables the CME and EXE events of the Standard Event Status Event register. Query Syntax : *ESE? Return Parameters : <NR1> Query Example : *ESE? This query returns current setting of "Standard Event Status Enable".

*ESR? Standard Event Status Register Query

Type : Device Status Description : This query reads the Standard Event Status register. Reading the register clears it. See detailed explanation of this register in

Chapter 8 Status Reporting.

Standard Event Status Event register

Bit Position 7 6 5 4 3 2 1 0 Condition 0 0 CME EXE DDE QYE 0 0 Bit Weight 128 64 32 16 8 4 2 1

Query Syntax : *ESR? Return Parameters : <NR1> Query Example : *ESR? Return the status readings of Standard Event Status

Return Example : 48

*IDN? Identification Query

Type : System Interface Description : This query requests the Electronic Frame (6314) to identify

7-2

Language Dictionary

itself. Query Syntax : *IDN? Return Parameters : <aard> Query Example : *IDN? String Information CHROMA Manufacture

6314 Model 0 Always return zero

01.00 Revision level of the primary interference firmware 0 customer’s version Return Example : CHROMA 6314,0,01.00,0

*OPC Operation Complete Command

Type : Device Status Description command causes the interface to set the OPC bit (bit 0) : This

Syntax : *OPC Parameters : nil

of the Standard Event Status register when the Electronic

Frame (6314) has completed all pending operations.

*OPC? Operation Complete Query

Type : Device Status Description This query returns an ASCII “1” when all pending operations :

Query Syntax : *OPC? Return Parameters : <NR1> Query Example : 1

*RCL Recall Instrument State Command

Type : Device Status Description : This command restores the electronic load to a state that was

Syntax : *RCL <NRf> Parameters : 1 to 101 Example : *RCL 50

*RDT? Resource Description Transfer Query

Type : System Interface Description : This command returns the types of Electronic Frame (6314).

Query Syntax : *RDT? Return Parameters : <aard> Query Example : 63107L, 63107R, 63103, 0, 63102, 63102, 0, 0.

previously stored in memory with the *SAV command to the

specified location (see *SAV ).

are completed.

If channel does not exist, it returns 0. If channel exists, it

returns the types like 63103, 63102, 63107R, 63107L...

*RST Rrset Command

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Type : Device State Description This command forces an ABORt, *CLS, LOAD=PROT=CLE :

command.

Syntax : *RST Parameters : nil

*SAV Save Command

Type : Device Status Description : This command stores the present state of the single electronic

load and the states of all channels of the multiple load in a

specified location in memory. Syntax : *SAV <NRf> Parameters : 1 to 100 Example : *SAV 50

*SRE Service Request Enable Command/Query

Type : Device Status Description : This command sets the condition of the Service Request Enable

Bit) the

Summary) bit. A "1" in the bit position enable bits are logically ORed to cause Bit 6(the Master Summary Status of the Status Byte register to be set. See details concerning

Status Byte register in Chapter 8 Status Reporting.

Syntax : *SRE <NRf>

Parameters : 0 to 255

Example : *SRE 20 Enable the CSUM and MAV bit of the Service

Request Enable.

Query Syntax : *SRE? Return Parameters : <NR1> Query Example : *SRE? Return the setting for "Service Request Enable".

*STB? Read Status Byte Query

Type : Device Status

Description : This query reads the Status Byte register. Note that the MSS

(Master Summary Status) bit instead of RQS bit is returned in Bit

6. This bit indicates if the electronic load has at least one reason for requesting service. *STB? does not clear the Status register, which is cleared only when subsequent action has cleared all its set bits. Refer to Chapter 8 Status Reporting for more information about this register.

Status Byte register

Bit Position 7 6 5 4 3 2 1 0 Condition 0 MSS ESB MAV QUES CSUM 0 0 Bit Weight 128 64 32 16 8 4 2 1

Query Syntax : *STB?

7-4

Byte

Language Dictionary

Return Parameters : <NR1> Query Example : *STB? Return the contents of "Status Byte". Return Example : 20

7.2 Specific Commands

The 6310 series products are equipped with the following specific GPIB commands.

7.2.1 ABORT Subsystem

:ABORt

ABORt

Type : All Channel Description : Set all electronic loads as "OFF". Syntax : ABORt

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

7.2.2 CHANNEL Subsystem

:CHANnel

:SYNCon

<NRf+>:LOAD

<NR1>

MAX

MIN

ON/1

OFF/0

<NR1>

:ACTive ON/1

:ID

OFF/0

<aard>

CHANnel:[LOAD]

Type : Channel Specific

Description : Select a specific channel by which the coming channel-specific

command will be received and executed. Syntax : CHANnel <NRf+> Parameters : 1 ~ 8 Example : CHAN 1 Set specific channel as "1".

CHAN MAX Set specific channel as "8". CHAN MIN Set specific channel as "1". Query Syntax : CHAN? CHAN? MAX CHAN? MIN Return Parameters : <NR1> Query Example : CHAN? Return current specific channel. Return Example : 1

CHANnel:ACTive

7-6

Language Dictionary

Type : Channel Specific Description : Enable or disable the load module. Syntax : CHANnel : ACTive ON. Enable the load module.

The front panel displays the measurement of voltage and

current.

CHANnel : ACTive OFF. Disable the load module.

LCD on the front panel displays OFF. Parameter : ON/1, OFF/0 Example : CHAN : ACT ON

CHANnel:SYNCon Type : Channel Specific Description : Set the load module to receive synchronized command action of RUN ABORT or not. Syntax : CHANnel : SYNCon ON

CHANnel : SYNCon OFF

Parameters : ON/1, OFF/0 Example : CHAN : SYNC ON. Set the load module to receive

synchronized command action.

CHAN : SYNC OFF. Set the load module not to receive

synchronized command action.

Query Syntax : CHAN : SYNC? Return Parameters : <NR1> Query Example : CHAN : SYNC? Return to the load module and makes it

receive synchronized command status.

Return Example : 0 The load module does not receive synchronized command status.

1 The load module receives synchronized command

status.

CHAN:ID?

Type : Channel-Specific Description : This query requests the module to identify itself. Query Syntax : ID? Return Parameters : <aard> Query Example : ID?

String Information

CHROMA Manufacturer 6310X Model 0 Always return zero xx.xx Revision of the primary interface firmware 0 Customer’s Version

Return Example : CHROMA,63102,0,01.00,0

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

7.2.3 CONFIGURE Subsystem

:CONFigure

:AUTO

:ON

:RANGe

:LATCh ON/1

:LOAD

<NRf>:VOLTage

<NRf> suffix

suffix

<NR2>

OFF/0

<NR1>

ON/1

OFF/0

<NR1>

:SOUNd

:REMote

:SAVE

:LOAD

:MODE

LOAD/1

PROGRAM/0

<NR1>

ON/1

OFF/0

<NR1>

ON/1

OFF/0

UPDATED/1

OLD/0

7-8

Language Dictionary

CONFigure:VOLTage:ON

Type : Channel-Specific Description : Set voltage of sink current on.

Syntax : CONFigure:VOLTage:ON <NRf> [suffix] Parameters : For valid voltage range refer to respective specification. Example : CONF:VOLT:ON 1 Set Von=1V. CONF:VOLT:ON 300mV Set Von=300mV. Query Syntax : CONFigure:VOLTage:ON? Return Parameters : <NR2> [Unit=Voltage] Query Example : CONF:VOLT:ON? Return the setting Von value. Return Example : 3.5

CONFigure:VOLTage:RANGe

Type : Channel-Specific Description : Set voltage measurement range in CC mode. Syntax : CONFigure:VOLTage:RANGEe <NRf> [suffix] Parameters : Value ranges depend on Load Module. For details refer to

specification.

Example : CONF:VOLT:RANG 16 Set full-range as Low, for example,

in 63103.

CONF:VOLT:RANG 80V Set full-range as High, for example,

in 63103. CONF:VOLT:RANG H Set full-range as High. CONF:VOLT:RANG L Set full-range as Low. Query Syntax : CONFigure:VOLTage:RANGe? Return Parameters : <NR2> [Unit = Voltage] Query Example : CONF:VOLT:RANG? Return Voltage range. Return Example : 16

CONFigure:VOLTage:LATCh

Type : Channel-Specific Description : Set the action type of Von. Syntax : CONFigure:VOLTage:LATch ON

CONFigure:VOLTage:LATch OFF

Parameters : ON/1, OFF/0 Example : CONF:VOLT:LAT ON Set the action type of Von as Latch.

CONF:VOLT:LAT OFF Set the action type of Von as Non

Latch (For detailed action refer to the user’s manual). Query Syntax : CONFigure:VOLTage:LATch? Return Parameters : <NR1> Query Example : CONF:VOLT:LAT? Return Example : 0 (non latch), 1 (latch) Return the action type of Von.

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

CONFigure:AUTO:LOAD Type : All Channel Description : Set if the load module will do Auto Load On during power-on. Syntax : CONFigure:AUTO:LOAD ON

Parameters : ON/1, OFF/0 Example : CONF:AUTO:LOAD ON Start Auto Load On during power-on.

power-on. Query Syntax : CONFigure:AUTO:LOAD? Return Parameters : <NR1> Query Example : CONF:AUTO:LOAD? Return Example : 0 or 1 Return the status of Auto Load On

CONFigure:AUTO:MODE

Type : All Channel Description : Set the Auto Load On to LOAD ON or PROGRAM RUN. Syntax : CONFigure:AUTO:MODE LOAD

Parameters : LOAD/1, PROGRAM/0 Example : CONF:AUTO:MODE LOAD Set Auto Load On as general LOAD ON.

PROGRAM RUN. Query Syntax : CONFigure:AUTO:MODE? Return Parameters : <NR1> Query Example : CONF:AUTO:MODE? Return the execution Return Example : 0 or 1 type of Auto Load On.

CONFigure:AUTO:LOAD OFF

CONF:AUTO:LOAD OFF Close Auto Load On during

CONFigure:AUTO:MODE PROGRAM

CONF:AUTO:MODE PROGRAM Set Auto Load On as

CONFigure:SOUND

Type : Channel-Specific Description : Set the buffer sound of load module to ON or OFF. Syntax : CONFigure:SOUND ON

Parameters : ON/1, OFF/0 Example : CONF:SOUND ON

Query Syntax : CONFigure:SOUND? Return Parameters : <NR1> Query Example : CONF:SOUND? Return the control status of the load module’s buzzer sound. Return Example : 0 or 1

CONFigure:REMote

Type : All Channel Description : Set the status of remote control (only effective in RS232C). Syntax : CONFigure:REMote ON

CONFigure:SOUND OFF

CONF:SOUND OFF

CONFigure:REMote OFF

7-10

Language Dictionary

Parameters : ON/1, OFF/0 Example : CONF:REM ON Set to remote control.

CONFigure:SAVE

Type : All Channel Description : Store the data of CONFigure into EEPROM. Syntax : CONFigure:SAVE Parameters : none Example : CONF:SAVE

CONFigure:LOAD Type : All Channel Description : The value at the setting of load module as LOADON is the

one changed by the rotary knob (UPDATED/1) or the original

set value (OLD/0).

Syntax : CONFigure:LOAD UPDATED

CONFigure:LOAD OLD

Parameters : UPDATED/1, OLD/0 Example : CONF:LOAD UPDATED Set the value of LOADON as that changed by the rotary knob.

CONF:LOAD OLD Set the value of LOADON as the

original set value. Query Syntax : CONFigure:LOAD? Return Parameters : <NR1> Query Example : CONF:LOAD? Return Example : 1 (UPDATED) or 0 (OLD)

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

7.2.4 CURRENT Subsystem

:CURRent

:STATic

:DYNamic

:L1

:L2

:RISE

:FALL

:L1

:L2

<NRf+>

suffix

<NR2>

MAX

MIN

suffix

<NR2>

MAX

MIN

suffix

<NR2>

MAX

MIN

:RISE

:FALL

:T1

:T2

<NRf+>

suffix

<NR2>

MAX

MIN

suffix

<NR2>

MAX

MIN

CURRent:STATic:L1/L2

Type : Channel-Specific Description : Set the Static Load Current of constant current mode. Syntax : CURRent:STATic:L1 <NRf+> [suffix]

CURRent:STATic:L2 <NRf+> [suffix]

Parameters : For valid value range refer to respective specification. Example : CURR:STAT:L1 20 Set Constant Current = 20A for Static Load L1.

CURR:STAT:L2 10 Set Constant Current = 10A for

7-12

Language Dictionary

MAX

Static Load L2. CURR:STAT:L1 MAX Set Constant Current = maximum value for Static Load L1.

CURR:STAT:L2 MIN Set Constant Current = minimum

value for Static Load L2. Query Syntax : CURRent:STATic:L1? CURRent:STATic:L2? CURRent:STATic:L1? MAX CURRent:STATic:L2? MIN Return Parameters : <NR2> [Unit=Ampere] Query Example : CURR:STAT:L1? Return set current value of the Static Load L1. Return Example : 3.12

CURRent:STATic:RISE/FALL

Type : Channel-Specific Description : Set current slew rate of constant current static mode. Syntax : CURRent:STATic:RISE <NRf+> [suffix]

CURRent:STATic:FALL <NRf+> [suffix]

Parameters : For valid value range refer to respective specification. Example : CURR:STAT:RISE 2.5 Set rise slew rate as 2.5A/µS of static load.

CURR:STAT:FALL 1A/µS Set fall slew rate as 1A/µS of

static load. Query Syntax : CURRent:STATic:RISE?

CURRent:STATic:FALL? CURRent:STATic:RISE? MAX CURRent:STATic:FALL? MIN

Return Parameters : <NR2> [Unit=A/µS]

Query Example : CURR:STAT:RISE? Return rise slew rate of static load. Return Example : 2.5

CURRent:DYNamic:L1/L2

Type : Channel-Specific Description : Set the Dynamic Load Current during constant current mode. Syntax : CURRent:DYNamic:L1 <NRf+> [suffix]

CURRent:DYNamic:L2 <NRf+> [suffix]

Parameters : For valid value range refer to respective specification. Example : CURR:DYN:L1 20 Set dynamic load parameter L1 = 20A.

CURR:DYN:L2 10 Set dynamic load parameter

L2 = 10A. CURR:DYN:L1 MAX Set dynamic load parameter L1 = maximum value.

CURR:DYN:L2 MIN Set dynamic load parameter

L2 = minimum value. Query Syntax :CURRent:DYNamic:L1? CURRent:DYNamic:L2? CURRent:DYNamic:L1? MAX

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

CURRent:DYNamic:L2? MIN Return Parameters : <NR2> [Unit=Ampere] Query Example : CURR:DYN:L1? Return setting current in dynamic load L1. Return Example : 35.6

CURRent:DYNamic:RISE/FALL

Type : Channel-Specific Description : Set the current slew rate of constant current dynamic mode. Syntax : CURRent:DYNamic:RISE <NRf+> [suffix]

CURRent:DYNamic:FALL <NRf+> [suffix]

Parameters : For valid value range refer to respective specification. Example : CURR:DYN:RISE 2.5 Set rise slew rate as 2.5A/µS.

CURR:DYN:FALL 1A/µS Set fall slew rate as 1A/µS.

CURR:DYN:RISE MAX Set rise slew rate as maximum

value of dynamic load.

CURR:DYN:FALL MIN Set fall slew rate as minimum

value of dynamic load.

Query Syntax : CURRent:DYNamic:RISE?

CURRent:DYNamic:FALL? CURRent:DYNamic:RISE? MAX CURRent:DYNamic:FALL? MIN

Return Parameters : <NR2> [Unit=A/µS] Query Example : CURR:DYN:RISE? Return rise slew rate of dynamic load. Return Example : 2.5

CURRent:DYNamic:T1/T2

Type : Channel-Specific Description : Set the duration parameter T1 or T2 of dynamic load. Syntax : CURRent:DYNamic:T1 <NRf+> [suffix]

CURRent:DYNamic:T2 <NRf+> [suffix]

Parameters : For valid value range refer to respective specification. Example : CURR:DYN:T1 10mS Set dynamic duration T1 = 10mS.

CURR:DYN:T2 2S Set dynamic duration

T2 = 2S.

CURR:DYN:T1 MAX Set dynamic duration

T1 as maximum value.

CURR:DYN:T2 MIN Set dynamic duration

T2 as minimum value. Query Syntax : CURRent:DYNamic:T1?

CURRent:DYNamic:T2? CURRent:DYNamic:T1? MAX CURRent:DYNamic:T2? MIN

Return Parameters : <NR2> [Unit=Sec] Query Example : CURR:DYN:T1? Return the dynamic duration parameter T1. Return Example : 0.15

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7.2.5 FETCH Subsystem

Language Dictionary

:FETCh

:VOLTage

:CURRent

:STATus

:ALLVoltage

:ALLCurrent

<NR2>

<NR1>

<aard>

FETCh:VOLTage?

Type : Channel-Specific Description : Return the real time voltage measured at the input of the load

module.

Query Syntax : FETCh:VOLTage? Return Parameters : <NR2> [Unit=Voltage] Query Example : FETC:VOLT? Return Example : 8.12

FETCh:CURRent?

Type : Channel-Specific Description : Return the real time current measured at the input of the load

module.

Query Syntax : FETCh:CURRent? Return Parameters : <NR2> [Unit=Ampere] Query Example : FETC:CURR? Return Example : 3.15

FETCh:STATus?

Type : Channel-Specific Description : Return the real time status of the load module. Query Syntax : FETCh:STATus?

Return Parameters : <NR1>

FETCh:ALLVoltage?

Type : Channel-Independent Description : Return the real time voltage measured at the input of the all load module. Query Syntax : FETCh:ALLVoltage? Return Parameters : <aard> [Unit=Voltage] Query Example : FETC:ALLV? Return Example : 1.2, 2, 0, 0, 10.2, 0, 0, 0

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

FETCh:ALLCurrent?

Type : Channel-Independent Description : Return the real time current measured at the input of the all load module. Query Syntax : FETCh:ALLCurrent? Return Parameters : <aard> [Unit=Ampere] Query Example : FETC:ALLC? Return Example : 0, 0, 0, 0, 5.12, 0, 12, 0

Bit Position 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Condition OT RV OP OV OC Bit Weight 16 8 4 2 1

Query Example : FETC:STAT? Read back the present status of load module. Return Example : 4

7.2.6 LOAD Subsystem

:LOAD :STATe

:SHORt :STATe

:KEY

ON/1

OFF/0

<NR1>

ON/1

OFF/0

<NR1>

TOGGLE/1

HOLD/0

<NR1>

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:PROTection :CLEar

:CLEar

:SAVe

<NR1>

Language Dictionary

LOAD:[STATe]

Type : Channel-Specific Description : The LOAD command makes the electronic load active/on or

inactive/off. Syntax : LOAD:[STATe] ON LOAD:[STATe] OFF Parameters : ON/1, OFF/0 Example : LOAD ON Activate the electronic load. LOAD OFF Inactivate the electronic load. Query Syntax : LOAD:[STATe]? Return Parameters : <NR1> Query Example : LOAD? Return if the electronic

load is active. Return Example : 1

LOAD:SHORt:[STATe]

Type : Channel-Specific Description : Activate or inactivate short-circuited simulation. Syntax : LOAD:SHORt:[STATe] Example : LOAD:SHOR ON Activate short-circuited simulation.

LOAD:SHOR OFF Inactivate short-circuited

simulation. Parameters : ON/1, OFF/0 Query Syntax : LOAD:SHORt:[STATe]? Return Parameters : <NR1> Query Example : LOAD:SHOR? Returns the short-circuit simulation state. Return Example : 1

LOAD:SHORt:KEY

Type : Channel-Specific Description : Set the mode of short key in the electronic load. Syntax : LOAD:SHORt:KEY TOGGLE Parameters : TOGGLE/1, HOLD/0 Example : LOAD:SHOR:KEY TOGGLE Set short key mode as Toggle.

LOAD:SHOR:KEY HOLD Set short key mode as Hold.

Query Syntax : LOAD:SHORt:KEY? Return Parameters : <NR1> Query Example : LOAD:SHOR:KEY? Return the mode of short key in the electronic load. Return Example : 1

LOAD:PROTection:CLEar

Type : Channel-Specific Description : This command resets or returns status of the electronic load. Syntax : LOAD:PROTection:CLEar Parameters : For valid value range refer to respective specification.

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Example : LOAD:PROT:CLE Query Syntax : LOAD:PROTection:CLEar?

Return Parameters : <NR1>

Bit Position 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Condition 0 0 0 0 0 0 0 0 0 0 0 OT RV OP OV OC Bit Weight 16 8 4 2 1

Query Example : LOAD:PROT? Return the electronic load status.

Return Example : 0

LOAD:CLEar

Type: All Channel Description: Clear all data and return it to default. Syntax: LOAD:CLEar Parameters: None Example: LOAD:CLE

LOAD:SAVe

Type: All Channel Description: Save the current data as default. Syntax: LOAD:SAVe Parameters: None Example: LOAD:SAV

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7.2.7 MEASURE Subsystem

Language Dictionary

:MEASure

:VOLTage

:CURRent

:INPut

:SCAN

:ALLVoltage

:ALLCurrent

<NR2>

UUT/1

LOAD/0

<NR1>

ON/1

OFF/0

<arrd>

MEASure:VOLTage?

Type : Channel-Specific Description : Return the voltage measured at the input of electronic load. Query Syntax : MEASure:VOLTage? Return Parameters : <NR2> [Unit=Voltge] Query Example : MEAS:VOLT? Return Example : 8.12

MEASure:CURRent?

Type : Channel-Specific Description : Return the current measured at the input of electronic load. Query Syntax : MEASure:CURRent? Return Parameters : <NR2> [Unit=Ampere] Query Example : MEAS:CURR? Return Example : 3.15

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

MEASure:INPut

Type : Channel-Specific Description : Select the input port of electronic load to measure the voltage. Syntax : MEASure:INPut? Parameters : UUT/1, LOAD/0 Example : MEAS:INP UUT

MEAS:INP LOAD

Query Syntax : MEASure:INPut? Return the input port which has been set. Return Parameters : <NR1> Query Example : MEAS:INP? Return Example : 0

MEASure:SCAN

Type : All Channel Description : Set the scanning mode of frame to load

module.

Syntax : MEASure:SCAN ON Enable the frame to scan the load module.

MEASure:SCAN OFF Disable the frame to scan the

load module. Parameters : ON/1, OFF/0 Example : MEAS:SCAN ON

MEAS:SCAN OFF

Query Syntax : MEASure:SCAN? Return the scanning mode of the frame. Return Parameters : <NR1> Query Example : MEAS:SCAN? Return Example : 1

MEASure:ALLVoltage?

Type : Channel-Independent Description : Return the voltage measured at the input of all load module. Query Syntax : MEASure:ALLVoltage? Return Parameters : <aard> [Unit=Voltage] Query Example : MEAS:ALLV? Return Example : 1.2, 2, 0, 0, 10.2, 0, 0, 0

MEASure:ALLCurrent?

Type : Channel-Independent Description : Return the current measured at the input of all load module. Query Syntax : MEASure:ALLCurrent? Return Parameters : <aard> [Unit=Ampere] Query Example : MEAS:ALLC? Return Example : 0, 0, 0, 0, 5.12, 0, 12, 0

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7.2.8 MODE Subsystem

Language Dictionary

:MODE

CCL

CCH

CCDL

CCDH

CRL

CRH

<aard>

MODE

Type : Channel-Specific Description : This command sets operational modes of the electronic load. Syntax : MODE CCL Set CC mode of low range.

MODE CCH Set CC mode of high range. MODE CCDL Set CC dynamic mode of low

range.

MODE CCDH Set CC dynamic mode of high range.

MODE CRL Set CR mode of low range.

MODE CRH Set CR mode of high range.

MODE CV Set CV mode.

Parameters : CCL, CCH, CCDL, CCDH, CRL, CRH, CV Example : MODE CCL Query Syntax : MODE? Return the operational mode of the electronic load. Return Parameters : <aard> Query Example :MODE? Return Example : CCL

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

7.2.9 PROGRAM Subsystem

:PRORGram :FILE

:SEQuence

:ACTive

:SHORt :CHANnel

:TIME

:MODE

<NRf+>

<NRf>

<NR1>

<NRf>

<NR1>

<NRf>

<NR2>

SKIP

AUTO

MANUAL

<CHAR>

<NR1>

:CHAin

:ONTime

<NRf>

suffix

<NR2>

MAX

MIN

:OFFTime

<NRf> suffix

<NR2>

MAX

MIN

:RUN ON/1

OFF/0

:SAVE

:PFDTime Suffix

<NRF>

MAX

<NR1>

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MIN

Language Dictionary

PROGram:FILE

Type : By program file Description : Set the program number. Syntax : PROGram:FILE <NRf+> Parameters : 1 to 10 Example : PROG:FILE 10 Query Syntax : PROGram:FILE? Return the active program number. Return Parameters : <NR1> Query Example : PROG:FILE? Return Example : 10

PROGram:SEQuence

Type : By program file Description : Set the sequence of program file. Syntax : PROGram:SEQuence <NRf+> Parameters : 1 to 10 Example : PROG:SEQ3 Query Syntax : PROGram:SEQuence? Return Parameters : <NR1> Query Example : PROG:SEQ? Return Example : 3

PROGram:SEQuence:MODE

Type : By program file Description : Set the type of sequence. Syntax : PROGram:SEQuence:MODE SKIP

PROGram:SEQuence:MODE AUTO PROGram:SEQuence:MODE MANUAL

Parameters : SKIP, AUTO, MANUAL Example : PROG:SEQ:MODE SKIP

PROG:SEQ:MODE AUTO PROG:SEQ:MODE MANUAL

Query Syntax : PROGram:SEQ:MODE? Return Parameters : SKIP, AUTO, MANUAL Query Example : PROG:SEQ:MODE? Return Example : AUTO

PROGram:SEQuence:SHORt:CHANnel

Type : By program file Description : Set the short channel of PROGRAM file SEQuence Syntax : PROGram:SEQuence:SHORt:CHANnel <NRf> Parameters : 0 – 255

Channel 8 7 6 5 4 3 2 1 Bit Weight 128 64 32 16 8 4 2 1

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

Example : PROG:SEQ:SHOR:CHAN 3 Query Syntax : PROGram:SEQuence:SHORt:CHANnel? Return Parameter : <NR1> Query Example : PROG:SEQ:SHOR:CHAN? Return Example : 3

PROGram:SEQuence:SHORt:TIME

Type : By program file Description : Set the short time of PROGRAM file SEQuence. Syntax : PROGram:SEQuence:SHORt:TIME Parameters : 0 - 30.0 Example : PROG:SEQ:SHOR: TIME 10 Query Syntax : PROGram:SEQuence:SHORt:TIME? Return Parameter : <NR2> Query Example : PROG:SEQ:SHOR:TIME? Return Example : 10

PROGram:ACTive

Type : By program file Description : Select the active load modules. Syntax : PROGram:ACTive <NRf> Parameters : 0 - 255

Channel 8 7 6 5 4 3 2 1 Bit Weight 128 64 32 16 8 4 2 1

Example : PROG:ACT 12 Query Syntax : PROGram:ACTive? Return Parameters : <NR1> Query Example : PROG:ACT? Return Example : 12

PROGram:CHAin

Type : By program file Description : Set the type of program file in serial execution. Syntax : PROGram:CHAin <NRf> Parameters : 0 to 10 0 does not chain. Example : PROG:CHA 7 Query Syntax : PROGram:CHAin? Return Parameters : <NR1> Query Example : PROG:CHA? Return Example : 7

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Language Dictionary

PROGram:ONTime

Type : By program file Description : Set the load on time of program file. Syntax : PROGram:ONTime <NRf> Parameters : For valid value range refer to respective specification. Example : PROG:ONT 10

PROG:ONT 100mS

Query Syntax : PROGram:ONTime? Return Parameters : <NR2> [Unit=Sec] Query Example : PROG:ONT? Return Example : 10

PROGram:OFFTime

Type : By program file Description : Set the load off time of program file. Syntax : PROGram:OFFTime <NRf> Parameters : For valid value range refer to respective specification. Example : PROG:OFFT 20

PROG:OFFT 200mS

Query Syntax : PROGram:OFFTime? Return Parameters : <NR2> [Unit=Sec] Query Example : PROG:OFFT? Return Example : 0.2

PROGram:PFDTime

Type : By program file Description : Set the pass/fail delay time of program file. Syntax : PROGram:PFDTime <NRf> Parameters : For valid value range refer to respective specification. Example : PROG:PFDT 1 PROG : PFDT 200mS Query Syntax : PROGram:PFDTime? Return Parameters : <NR2> [Unit=Sec] Query Example : PROG:PFDT? Return Example : 0.2

PROGram:RUN

Type : By program file Description : Execute the program according to the set program file. Syntax : PROGram:RUN ON

PROGram:RUN OFF

Parameters : ON/1, OFF/0 Example : PROG:RUN ON

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Programmable DC Electronic Load 6310 Series Operation & Programming Manual

PROGram:SAVE

Type : By program file Description : Save the setting of program. Syntax : PROGram:SAVE Parameters : NONE Example : PROG:SAVE

PROGram:RUN

Type: By program file Description: Execute the program Syntax: PROGram:RUN ON PROGram:RUN OFF Parameters: ON/1, OFF/0 Example: PROG:RUN ON Query Syntax: PROGram:RUN? Return Parameter: <NR1> Query Example: PROGram:RUN? Return Example: 1

PROGram:KEY

Type: By program file Description: Echo the manual key code Syntax: PROGram:KEY <NR1> PROGram:RUN OFF Parameters: 0 – 9 -> K0 -> K9 10 -> Kup 11 -> Kdown Example: PROG:KEY 11

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Chroma 6310 Operation

Specifications and Main Features

Frequently Asked Questions

User Manual

General Information

1.3 Overview of Key Features

Installation

2.3 Installing the Modules

2.4 Installing the Mainframe

2.4.1 Changing Line Voltage

2.5.2 Remote Sensing Connections

2.6 Remote Control Connection

Operation Overview

3.2 Front Panel Description

3.3 Rear Panel Description

3.5 Modes of Operation

3.5.1 Constant Current Mode

3.5.2 Constant Resistance Mode

3.5.3 Constant Voltage Mode

3.7 Measurements

3.8 Slew Rate & Minimum Transient Time

3.9 Start/Stop Sink Current

Local Operation

4.2 Local Operation of Load Mainframe

4.2.1 Selecting the Channel

4.2.2 Setting the Operation Mode

4.2.3 Setting the Program

4.2.4 Running the Program

4.2.5 Setting the Specification

4.2.6 Setting the Configuration

4.2.9 Going To Local

4.2.11 Setting System and RS-232C Connection

4.2.12 Connecting the GO/NG Output Port

4.2.13 Setting the GPIB Address

4.3 Local Operation of Load Module

4.3.1 Local Operation of Single Channel/Module (Panel A)

4.3.2 Local Operation of Double Channels/Module (Panel B)

4.3.3 Online Change Level

General Information for Programming

5.2 DIP Switches on the GPIB Card

5.2.2 Other DIP Switches

5.3 GPIB Capability of the Electronic Load

5.4 RS232C in Remote Control

Introduction to Programming

6.2 Numerical Data Formats

6.3 Character Data Formats

6.4 Separators and Terminators

Language Dictionary