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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.
ii
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 1000-4-2(1995):1991 - 8 kV AD, 4 kV CD (Class B)
IEC 1000-4-3(1995) - 3 V/m
IEC 1000-4-4(1995) - 0.5 kV Signal Lines
1 kV Power Lines
For safety requirement, the following standard was applied:
Safety:
Taiwan
Place
EN61010-1(1993)+A2(1995)
July 1999
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.
iv
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.
v
SAFETY SYMBOLS
DANGER - High voltage.
WARNING
CAUTION
vi
Explanation：To avoid injury, death of personnel, or damage to the
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 WARNING sign until
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 CAUTION sign until the indicated conditions are
fully understood and met.
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
vii
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
viii
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
8.3
8.4
8.5
8.6
8.7
8.8
8.9
9.
Channel Status.................................................................................................... 8-3
Channel Summary .............................................................................................. 8-3
Questionable Status ............................................................................................ 8-4
Output Queue ..................................................................................................... 8-4
Standard Event Status ........................................................................................ 8-4
Status Byte register ............................................................................................ 8-5
Service Request Enable register......................................................................... 8-6
An Example of Use ................................................................................................... 9-1
ix
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
AC input
Fuse
Amplitude
Frequency
Maximum VA
Trigger output
:
:
:
:
:
:
:
Weight
Dimension
Width
Height
:
:
:
:
Depth
:
6314/6312
115/230 switchable or 100/200 switchable Vac line
5A, 250V/2A, 250V
±10%
47 to 63 Hz
180VA/100VA
Vlo = 0.8V maximum at Ilo = 1 mA
Vhi = 3.2V minimum at Ihi = −40µA
24Kg/15Kg
440mm/275mm
177.4 mm (excluding feet)
186mm (including feet)
560mm (including Load module)
∗ The specifications of Load are listed below.
LNotice
1-2
General Information
1.
2.
3.
4.
5.
6.
All specifications are tested under 20°C ∼ 30°C except otherwise stated.
The range of operation temperature is 0°C ∼ 40°C.
The specifications of DC current accuracy are tested after the input is applied for 30
seconds.
The power of the load module of 6310 series is supplied from 6314/6312 mainframe.
The typical temperature coefficient is 100ppm.
The specifications of CR mode accuracy: v means 1/ohm.
1-3
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
MODEL
POWER
CURRENT
VOLTAGE
MIN. OPERATING VOLTAGE
(DC)
CONSTANT CURRENT MODE
Range
Resolution
Accuracy
CONSTANT RESISTANCE
MODE
Range
Resolution
Accuracy
CONSTANT VOLTAGE MODE
Range
Resolution
Accuracy
63101
63105
20W
0∼4A
200W
0∼40A
1∼80V
1.0V at 4A
1.0V at 40A
0∼4A
0∼40A
30W
0∼1A
300W
0∼10A
2.5∼500V
2.5V at 1A
2.5V at 10A
0∼1A
0∼10A
1mA
10mA
0.1%+0.1%F.S.
0.1%+0.2%F.S.
0.0375Ω∼150Ω (200W/16V)
1.875Ω∼7.5KΩ (200W/80V)
0.25mA
2.5mA
0.1%+0.1%F.S.
0.1%+0.2%F.S.
1.25Ω∼5KΩ (300W/125V)
50Ω∼200KΩ (300W/500V)
12 bits
150Ω : 0.1v+0.2%
7.5KΩ : 0.01v+0.1%
1∼80V
12 bits
5KΩ : 20mv+0.2%
200KΩ : 5mv+0.1%
2.5∼500V
20mV
0.05%±0.1%F.S.
125mV
0.05%±0.1%F.S.
DYNAMIC MODE
DYNAMIC MODE
T1 & T2
Accuracy
Slew Rate
Resolution
Current
Resolution
Current Accuracy
C.C. MODE
0.025mS∼10mS / Res: 1µS
1mS∼30S / Res: 1mS
1µS /1mS+100ppm
0.64∼160mA/µS 6.4∼1600mA/µS
0.64mA/µS
6.4mA/µS
0∼4A
0∼40A
1mA
10mA
0.4% F.S.
C.C. MODE
0.025mS∼10mS / Res: 1µS
1mS∼30S / Res: 1mS
1µS /1mS+100ppm
0.16∼40mA/µS
1.6∼400mA/µS
0.16mA/µS
1.6mA/µS
0∼1A
0∼10A
0.25mA
2.5mA
0.4% F.S.
MEASUREMENT SECTION
VOLTAGE READ BACK
Range
Resolution
Accuracy
0∼16V
0∼80V
0.5mV
2.5mV
0.05%+0.05% F.S.
0∼125V
0∼500V
4mV
16mV
0.05%+0.05% F.S.
0∼4A
0∼40A
0.125mA
1.25mA
0.1%+0.1% F.S.
0∼1A
0∼10A
4mA
16mA
0.1%+0.1% F.S.
CURRENT READ BACK
Range
Resolution
Accuracy
PROTECTIVE SECTION
Over Power Protection
Over Current Protection
Over Temperature Protection
Over Voltage Protection
≒20.8W
≒4.08A
≒208W
≒40.8A
≒85°C
≒81.6V
≒31.2W
≒1.02A
≒312W
≒10.2A
≒85°C
≒510V
GENERAL
SHORT CIRCUIT
Current (CC)
Voltage (CV)
Resistance (CR)
INPUT RESISTANCE (LOAD
OFF)
SIZE
WEIGHT (Approx.)
EMC & SAFETY
1-4
≒4.4/4A
≒44/40A
0V
0V
≒1.875Ω
≒0.0375Ω
100KΩ (Typical)
≒1.1/1A
≒11/10A
0V
0V
≒50Ω
≒1.25Ω
100KΩ (Typical)
81(W)× 172(H)×495(D)
4.2Kg
CE
81(W)× 172(H)×495(D)
4.2Kg
CE
General Information
MODEL
POWER
CURRENT
VOLTAGE
MIN. OPERATING VOLTAGE
(DC)
CONSTANT CURRENT MODE
Range
Resolution
Accuracy
CONSTANT RESISTANCE
MODE
Range
Resolution
Accuracy
CONSTANT VOLTAGE MODE
Range
Resolution
Accuracy
63102(100W*2)
20W
0∼2A
63103
100W
0∼20A
30W
0∼6A
1.0V at 2A
1.0V at 20A
1.0V at 6A
1.0V at 60A
0∼2A
0∼20A
0∼6A
0∼60A
1∼80V
300W
0∼60A
1∼80V
0.5mA
5mA
0.1%+0.1%F.S.
0.1%+0.2%F.S.
0.075Ω∼300Ω (100W/16V)
3.75Ω∼15KΩ (100W/80V)
1.5mA
15mA
0.1%+0.1%F.S.
0.1%+0.2%F.S.
0.025Ω∼100Ω (300W/16V)
1.25Ω∼5KΩ (300W/80V)
12 bits
300Ω : 0.1v+0.2%
15KΩ : 0.01v+0.1%
1∼80V
12 bits
100Ω : 0.1v+0.2%
5KΩ : 0.01v+0.1%
2.5∼500V
20mv
0.05%±0.1%F.S.
20mv
0.05%±0.1%F.S.
DYNAMIC MODE
DYNAMIC MODE
T1 & T2
Accuracy
Slew Rate
Resolution
Current
Resolution
Current Accuracy
C.C. MODE
0.025mS∼10mS / Res: 1µS
1mS∼30S / Res: 1mS
1µS /1mS+100ppm
0.32∼80mA/µS
3.2∼800mA/µS
0.32mA/µS
3.2mA/µS
0∼2A
0∼20A
0.5mA
5mA
0.4% F.S.
C.C. MODE
0.025mS∼10mS / Res: 1µS
1mS∼30S / Res: 1mS
1µS /1mS+100ppm
0.001∼0.25A/µS
0.01∼2.5A/µS
0.001A/µS
0.01A/µS
0∼6A
0∼60A
1.5mA
15mA
0.4% F.S.
MEASUREMENT SECTION
VOLTAGE READ BACK
Range
Resolution
Accuracy
0∼16V
0∼80V
0.5mV
2.5mV
0.05%+0.05% F.S.
0∼16V
0∼80V
0.5mV
2.5mV
0.05%+0.05% F.S.
0∼2A
0∼20A
0.0625mA
0.625mA
0.1%+0.1% F.S.
0∼6A
0∼60A
0.1875mA
1.875mA
0.1%+0.1% F.S.
CURRENT READ BACK
Range
Resolution
Accuracy
PROTECTIVE SECTION
Over Power Protection
Over Current Protection
Over Temperature Protection
Over Voltage Protection
≒20.8W
≒2.04A
≒104W
≒20.4A
≒85°C
≒81.6V
≒31.2W
≒6.12A
≒312W
≒61.2A
≒85°C
≒81.6V
GENERAL
SHORT CIRCUIT
Current (CC)
Voltage (CV)
Resistance (CR)
INPUT RESISTANCE (LOAD
OFF)
SIZE
WEIGHT (Approx.)
EMC & SAFETY
≒2.2/2A
≒22/20A
0V
0V
≒3.75Ω
≒0.075Ω
100KΩ (Typical)
≒6.6/6A
≒66/60A
0V
0V
≒1.25Ω
≒0.025Ω
100KΩ (Typical)
81(W)× 172(H)×495(D)
4.2Kg
CE
81(W)× 172(H)×495(D)
4.2Kg
CE
1-5
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
MODEL
POWER
CURRENT
VOLTAGE
MIN. OPERATING
VOLTAGE (DC)
CC MODE Range
Resolution
Accuracy
CR MODE Range
Resolution
Accuracy
63107(30W,250W)
30W
0∼5A
63106
1.0V at 5A
30W
0∼4A
1∼80V
1.0V at 4A
1.0V at 40A
1∼80V
1.0V at 12A
1.0V at 120A
0∼5A
1.25mA
0.1%+0.1%F.S.
0∼4A
1mA
0.1%+0.1%F.S.
0∼40A
10mA
0.1%+0.2%F.S.
0∼12A
0∼120A
3mA
30mA
0.1%+0.1%F.S. 0.1%+0.2%F.S.
0.3Ω∼1.2KΩ (30W/16v)
15Ω∼60KΩ (30W/80v)
250W
0∼40A
0.375Ω∼150Ω (250W/16v)
1.875Ω∼7.5KΩ (250W/80v)
12 bits
12KΩ : 0.1v+0.2%
60KΩ : 0.01v+0.1%
12 bits
150Ω : 0.1v+0.2%
7.5KΩ : 0.01v+0.1%
1∼80V
20mV
0.05%±0.1%F.S.
CV MODE Range
Resolution
Accuracy
60W
0∼12A
600W
0∼120A
12.5mΩ∼50Ω (600W/16v)
0.625Ω∼2.5KΩ (600W/80v)
12 bits
50Ω : 0.1v+0.5%
2.5KΩ : 0.01v+0.2%
1∼80V
20mV
0.05%±0.1%F.S.
DYNAMIC MODE
DYNAMIC MODE
T1 & T2
Accuracy
Slew Rate
Resolution
Current
Resolution
Current Accuracy
C.C. MODE
0.025mS∼10mS / Res: 1µS
1mS∼30S / Res: 1mS
1µS /1mS+100ppm
0.8∼200mA/µS 0.64∼160mA/µS
6.4∼1600mA/µS
0.8mA/µS
0.64mA/µS
6.4mA/µS
0∼5A
0∼4A
0∼40A
1.25mA
1mA
10mA
0.4% F.S.
C.C. MODE
0.025mS∼10mS / Res: 1µS
1mS∼30S / Res: 1mS
1µS /1mS+100ppm
0.002∼0.5A/µS
0.02∼5A/µS
0.002A/µS
0.02A/µS
0∼12A
0∼120A
3mA
30mA
0.4% F.S.
MEASUREMENT SECTION
VOLTAGE READ
BACK
Range
Resolution
Accuracy
0∼16V
0.5mV
0∼80V
0∼16V
2.5mV
0.5mV
0.05%+0.05% F.S.
0∼80V
2.5mV
0∼16V
0∼80V
0.5mV
2.5mV
0.05%+0.05% F.S.
CURRENT READ
BACK
Range
Resolution
Accuracy
0∼5A
0.15625mA
0∼4A
0.125mA
0.1%+0.1% F.S.
0∼40A
1.25mA
0∼12A
0∼120A
0.375mA
3.75mA
0.1%+0.1% F.S.
PROTECTIVE SECTION
Over Power Protection
Over Current Protection
Over Temperature
Protection
Over Voltage Protection
≒31.2W
≒5.1A
≒31.2W
≒4.08A
≒85°C
≒260W
≒40.8A
≒81.6V
≒62.4W
≒12.24A
≒624W
≒122.4A
≒85°C
≒81.6V
GENERAL
SHORT CIRCUIT
Current (CC)
Voltage (CV)
Resistance (CR)
INPUT
RESISTANCE
(LOAD OFF)
SIZE
WEIGHT (Approx.)
EMC & SAFETY
1-6
≒5.5/5A
0V
≒15Ω ≒0.3Ω
≒4.4/4A
0V
≒1.875Ω
100KΩ (Typical)
81(W)× 172(H)×495(D)
4.2Kg
CE
≒44/40A
0V
≒0.0375Ω
≒13.2/12A
≒132/120A
0V
0V
≒0.625Ω
≒0.0125Ω
100KΩ (Typical)
162(W)× 172(H)×495(D)
8.4Kg
CE
General Information
MODEL
POWER
CURRENT
VOLTAGE
MIN. OPERATING VOLTAGE
(DC)
CONSTANT CURRENT MODE
Range
Resolution
Accuracy
CONSTANT RESISTANCE
MODE
Range
Resolution
Accuracy
CONSTANT VOLTAGE MODE
Range
Resolution
Accuracy
63108
60W
0∼2A
63112
600W
0∼20A
2.5∼500V
2.5V at 2A
2.5V at 20A
0∼2A
0∼20A
120W
0∼24A
1200W
0∼240A
1∼80V
1.0V at 24A
1.0V at 240A
0∼24A
0∼240A
0.5mA
5mA
0.1%+0.1%F.S.
0.1%+0.2%F.S.
0.625Ω∼2.5KΩ (600W/125V)
25Ω∼100KΩ (600W/500V)
6mA
60mA
0.1%+0.1%F.S.
0.1%+0.2%F.S.
6.25mΩ∼25Ω (1200W/16V)
0.3125Ω∼1.25KΩ (1200W/80V)
12 bits
2.5KΩ : 50mv+0.2%
100KΩ : 5mv+0.1%
2.5∼500V
12 bits
25Ω : 0.1v+0.8%
1.25KΩ : 0.01v+0.2%
1∼80V
125mV
0.05%±0.1%F.S.
20mV
0.05%±0.1%F.S.
DYNAMIC MODE
DYNAMIC MODE
T1 & T2
Accuracy
Slew Rate
Resolution
Current
Resolution
Current Accuracy
C.C. MODE
0.025mS∼10mS / Res: 1µS
1mS∼30S / Res: 1mS
1µS /1mS+100ppm
0.32∼80mA/µS
3.2∼800mA/µS
0.32mA/µS
3.2mA/µS
0∼2A
0∼20A
0.5mA
5mA
0.4% F.S.
C.C. MODE
0.025mS∼10mS / Res: 1µS
1mS∼30S / Res: 1mS
1µS /1mS+100ppm
0.004∼1A/µS
0.04∼10A/µS
0.004A/µS
0.04A/µS
0∼24A
0∼240A
6mA
60mA
0.4% F.S.
MEASUREMENT SECTION
VOLTAGE READ BACK
Range
Resolution
Accuracy
0∼125V
0∼500V
4mV
16mV
0.05%+0.05% F.S.
0∼16V
0∼80V
0.5mV
2.5mV
0.05%+0.05% F.S.
0∼2A
0∼20A
0.0625mA
0.625mA
0.1%+0.1% F.S.
0∼24A
0∼240A
0.75mA
7.5mA
0.15%+0.15% F.S.
CURRENT READ BACK
Range
Resolution
Accuracy
PROTECTIVE SECTION
Over Power Protection
Over Current Protection
Over Temperature Protection
Over Voltage Protection
≒62.4W
≒2.04A
≒624W
≒20.4A
≒85°C
≒510V
≒124.8W
≒24.48A
≒1248W
≒244.8A
≒85°C
≒81.6V
GENERAL
SHORT CIRCUIT
Current (CC)
Voltage (CV)
Resistance (CR)
INPUT RESISTANCE (LOAD
OFF)
SIZE
WEIGHT (Approx.)
EMC & SAFETY
≒2.2/2A
≒22/20A
0V
0V
≒25Ω
≒0.625Ω
100KΩ (Typical)
≒26.4/24A
≒264/240A
0V
0V
≒0.3125Ω
≒0.00625Ω
100KΩ (Typical)
162(W)× 172(H)×495(D)
8.4Kg
CE
324(W)× 172(H)×495(D)
16.8Kg
CE
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.
protect the electronic Load in any indicated voltage setting.
The line fuses will
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.
rear panel.
2. The power cord is connected to the AC input socket.
Refer to line voltage on the
" 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
GPIB ADDRESS = 1
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.
2-4
Installation
The double channel/module goes to L channel.
63103
1.02
< --- Model Number
< --- F/W version
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.
2.5
2.5.1
Application Connection
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 SHIFT key and the function key simultaneously. Figure
3-1 shows the front panel of Mainframe 6312.
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 LCL key. You can
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.
3.5
Modes of Operation
There are three modes of operation: Constant Current (CC), Constant Resistance (CR), and
Constant Voltage (CV).
When you press ENTER key to program to a mode, a module will change to a new mode. In
change of modes the module’s input is momentarily disabled before a new mode is enabled.
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
MODE SELECT
3-4
Select Static Constant Current low range
Operation Overview
Select Static Constant Current high range
CCH
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
4A
State A
2A
State B
Time
10uS
25uS
press key "A/B"
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
CCDLT2:10mS
:1A/µS, CCDL
: 1A/µS, CCDLT1:10mS,
3-5
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
Current
4A
Load1
2A
load2
10mS
T1
10mS
T2
10mS
T1
10mS
T2
Time
Figure 3-5 Dynamic Current Waveform
The STATic/DYNAmic functions can be also selected through STATIC/DYNAMIC key on the
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.
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 ENTER key.
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
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 A/B key on the module’s keypad.
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.
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 SHORT key on the front panel. One is toggled on/off, and another
controlled by key. They are selected in configuration. The SHORT key will be enabled
only when Load is ON.
3-10
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 LOAD key on the module.
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.
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 SAVE key. Later you can recall the settings from the specified
file using RECALL key. The SAVE and RECALL keys affect all channels simultaneously.
3.14
Program
The program feature is so powerful.
3-12
It allows you to simulate various test conditions.
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.
2.
3.
4.
4-2
Line switch
LCD display
Channel indicator
Function keys
CHAN
Turn the ac power on/off.
Display channel information normally.
Indicate the active channel settings.
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
Local Operation
function.
CONF
5.
To select configuration data for editing.
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.
.
4.2.1
It is a decimal point.
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.
4-3
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 ▲
CCL: static low range
CCDL: dynamic low range
or ▼ key to select CCL followed by ENTER key.
CCH: static high 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:
CCL2:
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
CCL
4.
1.9995A
0.9990A
: 50mA/µS
: 60mA/µS
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
4-4
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:
CCL2:
3.
2.000Ω
1.000Ω
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
CRL
: 0.10A/µS
: 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.
4-5
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
CV
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:
CV 2:
5.00V
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
Figure 4-2 CV Response Transfer Function (FAST)
4-6
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
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 6 7 8
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
4-7
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
can chain itself for loop test, or chain other programs.
for loop test. The default setting is 0.
Press 1 , ENTER to set chain itself
PROGRAM CHAIN
No: 1
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.
time.
The default setting is 0 second for OFF
SEQ. OFF TIME
TIME:
0.0Sec
5.
Setting the Sequence Mode
There are three modes to control the method of sequence execution.
SKIP
AUTO
: Skip the sequence. Load will not change input status.
: 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.
for one program. The default setting is SKIP.
SEQ 1: SKIP=0
AUTO=1 MANUAL=2
4-8
You must set ten sequence settings
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
KEY
PASS/FAIL
:
:
:
It shows Load input status.
It displays when MANUAL mode is active and waiting key input.
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.
show as follows.
PROG. XX : 1 2
3 4 5 6 7 8 9 10
If the test fails, LCD will
PROG. XX stands for the file number of program fail, 1 to 10.
Besides, 1, 2, 3...10 shown
4-9
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.
set CENTER level 5V.
Press 5 , ENTER to
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
4-10
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.
4-11
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.
4-12
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.
4-13
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.
data with the rotary knob.
There are two types for you to change load module
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.
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
4-14
▼ key.
The default setting of
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:
3
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.
save a file to location 20.
Press SAVE, 2 , 0 , ENTER to
SAVE FILE
FILE NO: 20
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.
4-15
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.
Pin Number
1
2
3
4
5
6
7
8
9
RS-232C Connector
Input/Output
Description
Output
+5V
Input
R×D
Output
T×D
Output
DTR
Output
GND
Input
DSR
NC
NC
NC
Note: Pin 1 (+5V) is for 6310 series Remote Controller only.
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.
4-16
Local Operation
Pin Number
1
3
5
7
9
11
13
15
8
GO/NG Output Port Connector
Channel No.
Description
1
H:PASS or SPEC. OFF, L:FAIL
2
H:PASS or SPEC. OFF, L:FAIL
3
H:PASS or SPEC. OFF, L:FAIL
4
H:PASS or SPEC. OFF, L:FAIL
5
H:PASS or SPEC. OFF, L:FAIL
6
H:PASS or SPEC. OFF, L:FAIL
7
H:PASS or SPEC. OFF, L:FAIL
8
H:PASS or SPEC. OFF, L:FAIL
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
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.
4-17
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
4-18
Local Operation
will not respond if Load input is not enabled.
The LOAD key controls the on/off of the Load module input.
the Load input is enabled.
6.
Vsense Connectors
These two connectors are Vsense measurement input.
connections.
Its LED will be on when
Refer to 2.5.2 for remote sense
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.
the LED of load will be active.
When the input is turned on,
4-19
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.
2.
7-segment LED Display
The 7-segment LED displays measurement V/I of single or double channels.
display has five digits.
Each
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
4-20
Local Operation
when the check of any channel SPEC fails.
channels SPEC is all right.
It will be green when the check of both
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.
Short the Load Input
3.
4-21
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.
the LED of LOAD will be active.
4.3.3
When the input is turned on,
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.
ON
A1
A2
A3
A4
A5
A8: SHIELD GND
A7: MASTER/SLAVE
A6: PON-SRQ
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
5-1
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
12
13
14
15
5.2.2
0
0
0
0
1
1
1
1
1 0 0 28
1
1 0 1 29
1
1 1 0 30
1
1 1 1
Table 5-1 GPIB address
1
1
1
1
1
1
0
0
1
0
1
0
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
A6 Frame LOAD ON
Link
A7
A8 SHIELD GND
5.3
OFF
OFF
OFF
Description
When ON is set, two frames can act as LOAD Key
ON/OFF through RS232C port.
It must be “OFF”.
It is the selection for enabling shield ground.
GPIB Capability of the Electronic Load
GPIB Capability
Talker/Listener
Service Request
Remote/Local
5-2
Preset
Response
Interface
Functions
AH1, SH1, T6, L4
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.
The electronic load will set the SRQ line SR1
true if there is an enabled service request
condition.
RL1
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.
General Information for Programming
Device Clear
5.4
DCL, SDC
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.
RS232C in Remote Control
When you use RS232C in remote control, you have to send the remote command of
CONFigure : REMote ON first in order to let control procedure enter into remote state, and
then do other command set. When control comes to an end, you have to send the
command of CONFigure : REMote OFF so as to let control procedure return to the mode
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).
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
by a parameter or data:
LOAD ON
or TRIG
followed
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
NR1
Digits with no decimal point. The decimal point is
assumed to be to the right of the least-significant
digit.
NR2
Digits with a decimal point.
NR3
Digit with a decimal point and an exponent.
NRf
Flexible decimal form that includes NR1 or NR2 or
NR3.
NRf+
Expanded decimal form that includes NRf and MIN,
MAX. MIN and MAX are the minimum and
maximum limit values for the parameter.
Table 6-1 Numerical Data Type
Mode Class
CC Current
CR Resistance
Preferred Suffix
A
OHM
CV
All
Amplitude
Time
V
S
All
Slew Rate
A/µS
Example
123, 0123
123., 12.3, 0.123, .123
1.23E+3, 1.23E-3
123, 12.3, 1.23E+3
123, 12.3, 1.23E+3,
MIN, MAX
Secondary Suffix Referenced Unit
Ampere
Ohm
MS
Volt
Second
Millisecond
Amperes/micro Second
Table 6-2 Suffix Elements
Multiplier
1E6
1E3
1E-3
1E-6
1E-9
6.3
Mnemonic
Definition
MA
mega
K
kilo
M
milli
U
micro
N
nano
Table 6-3 Suffix Multipliers
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.
6-3
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
1.
2.
(root):VOLT:L1: 30<nl>
Starting a New Line returns to the Root.
(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
SP
< NRf>
SP
< NRf>
* SAV
SP
< NRf>
* SRE
SP
< NRf>
* ESE?
* ESR?
* IDN?
* OPC
* OPC?
* RCL
* RDT?
* RST
* SRE?
* STB?
*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
Syntax
Parameters
<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.
: *CLS
: 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
register to be set. See description of all three registers in Chapter
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 Example
Return the status readings of Standard Event Status
register.
: 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
: This command causes the interface to set the OPC bit (bit 0)
of the Standard Event Status register when the Electronic
Frame (6314) has completed all pending operations.
Syntax
: *OPC
Parameters
: nil
*OPC?
Operation Complete Query
Type
: Device Status
Description
: This query returns an ASCII “1” when all pending operations
are completed.
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
previously stored in memory with the *SAV command to the
specified location (see *SAV ).
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).
If channel does not exist, it returns 0. If channel exists, it
returns the types like 63103, 63102, 63107R, 63107L...
Query Syntax
: *RDT?
Return Parameters : <aard>
Query Example
: 63107L, 63107R, 63103, 0, 63102, 63102, 0, 0.
*RST
Rrset Command
7-3
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
Type
Description
Syntax
Parameters
: Device State
: This command forces an ABORt, *CLS, LOAD=PROT=CLE
command.
: *RST
: 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
register, which determines which events of the Status Byte
register (see *STB) are allowed to set the MSS( Master Status
Summary) bit. A "1" in the bit position enable bits are
logically ORed to cause Bit 6(the Master Summary Status
Bit)
of the Status Byte register to be set. See details concerning
the
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 Byte
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
Condition
0 MSS ESB MAV QUES CSUM 0
Bit Weight 128 64 32
16
8
4
2
Query Syntax
7-4
: *STB?
0
0
1
Language Dictionary
Return Parameters : <NR1>
Query Example
: *STB?
Return Example : 20
7.2
Return the contents of "Status Byte".
Specific Commands
The 6310 series products are equipped with the following specific GPIB commands.
7.2.1
ABORT Subsystem
:ABORt
ABORt
Type
Description
Syntax
: All Channel
: Set all electronic loads as "OFF".
: ABORt
7-5
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
7.2.2
CHANNEL Subsystem
:CHANnel
:LOAD
<NRf+>
SP
<NR1>
?
MAX
SP
MIN
:SYNCon
ON/1
SP
OFF/0
?
:ACTive
<NR1>
ON/1
SP
OFF/0
:ID
CHANnel:[LOAD]
Type
Description
?
<aard>
: Channel Specific
: 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
Description
Syntax
: Channel Specific
: Enable or disable the load module.
: 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.
: ON/1, OFF/0
: CHAN : ACT ON
Parameter
Example
CHANnel:SYNCon
Type
Description
: Channel Specific
: 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
Description
Query Syntax
Return Parameters
Query Example
String
CHROMA
6310X
0
xx.xx
0
: Channel-Specific
: This query requests the module to identify itself.
: ID?
: <aard>
: ID?
Information
Manufacturer
Model
Always return zero
Revision of the primary interface firmware
Customer’s Version
Return Example
: CHROMA,63102,0,01.00,0
7-7
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
7.2.3
:CONFigure
CONFIGURE Subsystem
:VOLTage
:ON
<NRf>
SP
<NR2>
?
:RANGe
<NRf>
SP
suffix
suffix
H
L
<NR2>
?
:LATCh
ON/1
SP
OFF/0
<NR1>
?
:AUTO
:LOAD
ON/1
SP
OFF/0
<NR1>
?
:MODE
LOAD/1
SP
PROGRAM/0
<NR1>
?
:SOUNd
SP
ON/1
OFF/0
<NR1>
?
:REMote
SP
ON/1
OFF/0
:SAVE
:LOAD
SP
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
to
Set the action type of Von as Non
Latch (For detailed action refer
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.
7-9
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
CONFigure:AUTO:LOAD OFF
Parameters
: ON/1, OFF/0
Example
: CONF:AUTO:LOAD ON
Start Auto Load On during
power-on.
CONF:AUTO:LOAD OFF
Close Auto Load On during
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
CONFigure:AUTO:MODE PROGRAM
Parameters
: LOAD/1, PROGRAM/0
Example
: CONF:AUTO:MODE LOAD
Set Auto Load On as
general LOAD ON.
CONF:AUTO:MODE PROGRAM Set Auto Load On as
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:SOUND
Type
Description
Syntax
: Channel-Specific
: Set the buffer sound of load module to ON or OFF.
: CONFigure:SOUND ON
CONFigure:SOUND OFF
Parameters
: ON/1, OFF/0
Example
: CONF:SOUND ON
CONF:SOUND OFF
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
Description
Syntax
7-10
: All Channel
: Set the status of remote control (only effective in RS232C).
: CONFigure:REMote ON
CONFigure:REMote OFF
Language Dictionary
Parameters
Example
CONFigure:SAVE
Type
Description
Syntax
Parameters
Example
: ON/1, OFF/0
: CONF:REM ON
Set to remote control.
: All Channel
: Store the data of CONFigure into EEPROM.
: CONFigure:SAVE
: none
: CONF:SAVE
CONFigure:LOAD
Type
Description
: All Channel
: 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)
7-11
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
7.2.4
:CURRent
CURRENT Subsystem
:STATic
:L1
SP
<NRf+>
:L2
suffix
<NR2>
?
MAX
SP
MIN
:RISE
SP
:FALL
?
<NRf+>
suffix
<NR2>
MAX
SP
MIN
:DYNamic
:L1
SP
<NRf+>
:L2
suffix
<NR2>
?
MAX
SP
MIN
:RISE
SP
:FALL
?
<NRf+>
suffix
<NR2>
MAX
SP
MIN
:T1
SP
:T2
?
<NRf+>
suffix
<NR2>
SP
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
CURR:STAT:L1 MAX
CURR:STAT:L2 MIN
Static Load L2.
Set Constant Current = maximum
value for Static Load L1.
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
7-13
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
7-14
Language Dictionary
7.2.5
FETCH Subsystem
:FETCh
:VOLTage
?
:CURRent
?
:STATus
?
:ALLVoltage
?
:ALLCurrent
?
<NR2>
<NR2>
<NR1>
<aard>
<aard>
FETCh:VOLTage?
Type
Description
: Channel-Specific
: 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
Description
: Channel-Specific
: 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
Description
Query Syntax
Return Parameters
: Channel-Specific
: Return the real time status of the load module.
: FETCh:STATus?
: <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
7-15
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
Condition
Bit Weight
Query Example
Return Example
7.2.6
:LOAD
9
: FETC:STAT?
:4
8
7
6
5
4 3 2 1 0
OT RV OP OV OC
16 8 4 2 1
Read back the present status of load module.
LOAD Subsystem
:STATe
ON/1
SP
OFF/0
<NR1>
?
:SHORt
:STATe
SP
ON/1
OFF/0
?
:KEY
SP
<NR1>
TOGGLE/1
HOLD/0
?
:PROTection
:CLEar
?
:CLEar
:SAVe
7-16
<NR1>
<NR1>
Language Dictionary
LOAD:[STATe]
Type
Description
: Channel-Specific
: 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
Description
Syntax
Parameters
Example
: Channel-Specific
: Set the mode of short key in the electronic load.
: LOAD:SHORt:KEY TOGGLE
: TOGGLE/1, HOLD/0
: 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.
7-17
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
Example
Query Syntax
: LOAD:PROT:CLE
: LOAD:PROTection:CLEar?
Return Parameters : <NR1>
Bit Position 15 14 13 12 11 10
Condition
0 0 0 0 0 0
Bit Weight
Query Example
Return Example
: LOAD:PROT?
:0
9
0
8
0
7
0
6
0
5 4 3 2 1 0
0 OT RV OP OV OC
16 8 4 2 1
Return the electronic load status.
LOAD:CLEar
Type:
Description:
Syntax:
Parameters:
Example:
All Channel
Clear all data and return it to default.
LOAD:CLEar
None
LOAD:CLE
LOAD:SAVe
Type:
Description:
Syntax:
Parameters:
Example:
All Channel
Save the current data as default.
LOAD:SAVe
None
LOAD:SAV
7-18
Language Dictionary
7.2.7
MEASURE Subsystem
:MEASure
:VOLTage
?
:CURRent
?
:INPut
SP
<NR2>
<NR2>
UUT/1
LOAD/0
?
:SCAN
SP
<NR1>
ON/1
OFF/0
?
:ALLVoltage
?
:ALLCurrent
?
<arrd>
<arrd>
MEASure:VOLTage?
Type
Description
Query Syntax
Return Parameters
Query Example
Return Example
: Channel-Specific
: Return the voltage measured at the input of electronic load.
: MEASure:VOLTage?
: <NR2> [Unit=Voltge]
: MEAS:VOLT?
: 8.12
MEASure:CURRent?
Type
Description
Query Syntax
Return Parameters
Query Example
Return Example
: Channel-Specific
: Return the current measured at the input of electronic load.
: MEASure:CURRent?
: <NR2> [Unit=Ampere]
: MEAS:CURR?
: 3.15
7-19
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
MEASure:INPut
Type
Description
Syntax
Parameters
Example
: Channel-Specific
: Select the input port of electronic load to measure the voltage.
: MEASure:INPut?
: UUT/1, LOAD/0
: 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
Description
Syntax
: All Channel
: Set the scanning mode of frame to load module.
: 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
7-20
Language Dictionary
7.2.8
MODE Subsystem
:MODE
SP
CCL
CCH
CCDL
CCDH
CRL
CRH
CV
?
<aard>
MODE
Type
Description
Syntax
: Channel-Specific
: This command sets operational modes of the electronic load.
: 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
7-21
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
7.2.9
:PRORGram
PROGRAM Subsystem
:FILE
<NRf+>
SP
<NR1>
?
:SEQuence
<NRf+>
SP
<NR1>
?
:SHORt
:CHANnel
<NRf>
SP
<NR1>
?
:TIME
<NRf>
SP
<NR2>
?
:MODE
SKIP
SP
AUTO
MANUAL
<CHAR>
?
:ACTive
<NRf>
SP
<NR1>
?
:CHAin
<NRf>
SP
<NR1>
?
:ONTime
SP
<NRf>
suffix
<NR2>
?
MAX
SP
MIN
:OFFTime
SP
<NRf>
suffix
<NR2>
?
SP
MAX
MIN
:RUN
SP
ON/1
OFF/0
?
:SAVE
:PFDTime
SP
<NRF>
Suffix
SP
MAX
?
MIN
7-22
Language Dictionary
PROGram:FILE
Type
Description
Syntax
Parameters
Example
Query Syntax
Return Parameters
Query Example
Return Example
: By program file
: Set the program number.
: PROGram:FILE <NRf+>
: 1 to 10
: PROG:FILE 10
: PROGram:FILE?
: <NR1>
: PROG:FILE?
: 10
PROGram:SEQuence
Type
Description
Syntax
Parameters
Example
Query Syntax
Return Parameters
Query Example
Return Example
: By program file
: Set the sequence of program file.
: PROGram:SEQuence <NRf+>
: 1 to 10
: PROG:SEQ3
: PROGram:SEQuence?
: <NR1>
: PROG:SEQ?
:3
Return the active program number.
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
Bit Weight
8 7 6 5 4
128 64 32 16 8
3
4
2
2
1
1
7-23
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
Example
Query Syntax
Return Parameter
Query Example
Return Example
: PROG:SEQ:SHOR:CHAN 3
: PROGram:SEQuence:SHORt:CHANnel?
: <NR1>
: PROG:SEQ:SHOR:CHAN?
: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
Description
Syntax
Parameters
: By program file
: Select the active load modules.
: PROGram:ACTive <NRf>
: 0 - 255
Channel
8 7 6 5 4
Bit Weight 128 64 32 16 8
Example
: PROG:ACT 12
Query Syntax
: PROGram:ACTive?
Return Parameters : <NR1>
Query Example
: PROG:ACT?
Return Example : 12
PROGram:CHAin
Type
Description
Syntax
Parameters
Example
Query Syntax
Return Parameters
Query Example
Return Example
7-24
3
4
2
2
: By program file
: Set the type of program file in serial execution.
: PROGram:CHAin <NRf>
: 0 to 10
0 does not chain.
: PROG:CHA 7
: PROGram:CHAin?
: <NR1>
: PROG:CHA?
:7
1
1
Language Dictionary
PROGram:ONTime
Type
Description
Syntax
Parameters
Example
: By program file
: Set the load on time of program file.
: PROGram:ONTime <NRf>
: For valid value range refer to respective specification.
: 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
Description
Syntax
Parameters
Example
: By program file
: Set the load off time of program file.
: PROGram:OFFTime <NRf>
: For valid value range refer to respective specification.
: 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
Description
Syntax
Parameters
Example
PROG
Query Syntax
Return Parameters
Query Example
Return Example
PROGram:RUN
Type
Description
Syntax
Parameters
Example
: By program file
: Set the pass/fail delay time of program file.
: PROGram:PFDTime <NRf>
: For valid value range refer to respective specification.
: PROG:PFDT 1
: PFDT 200mS
: PROGram:PFDTime?
: <NR2> [Unit=Sec]
: PROG:PFDT?
: 0.2
: By program file
: Execute the program according to the set program file.
: PROGram:RUN ON
PROGram:RUN OFF
: ON/1, OFF/0
: PROG:RUN ON
7-25
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
PROGram:SAVE
Type
Description
Syntax
Parameters
Example
: By program file
: Save the setting of program.
: PROGram:SAVE
: NONE
: PROG:SAVE
PROGram:RUN
Type:
Description:
Syntax:
By program file
Execute the program
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:
Description:
Syntax:
Parameters:
Example:
7-26
By program file
Echo the manual key code
PROGram:KEY <NR1>
PROGram:RUN OFF
0 – 9 -> K0 -> K9
10 -> Kup
11 -> Kdown
PROG:KEY 11
Language Dictionary
7.2.10
RESISTANCE Subsystem
:RESistance
:L1
SP
:L2
?
<NRf+>
suffix
<NR2>
SP
MAX
MIN
:RISE
SP
:FALL
?
<NRf+>
suffix
<NR2>
SP
MAX
MIN
RESistance:L1/L2
Type
Description
Syntax
: Channel-Specific
: Set static resistance level of constant resistance mode.
: RESistance:L1 <NRf+> [suffix]
RESistance:L2 <NRf+> [suffix]
Parameters
: For valid value range refer to respective specification.
Example
: RES:L1 20 OHM
Set constant resistance = 20 ohm
for Load L1.
RES:L2 10 OHM
Set constant resistance = 10 ohm
for Load L2.
RES:L1 MAX
Set constant resistance = maximum
L1 value for Load L1.
RES:L2 MIN
Set constant resistance = minimum
L2 value for Load L2.
Query Syntax
: RESistance:L1?
RESistance:L2?
RESistance:L1? MAX
RESistance:L2? MIN
Return Parameters : <NR2> [Unit=OHM]
Query Example
: RES:L1?
Return the set resistance of
the value of Load L1.
Return Example : 10
RESistance:RISE/FALL
Type
: Channel-Specific
Description
: Set resistive slew rate of constant resistance.
Syntax
: RESistance:RISE <NRf+> [suffix]
RESistance:FALL <NRf+> [suffix]
Parameters
: For valid value range refer to respective specification.
7-27
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
Example
: RES:RISE 2.5
RES:FALL 1A/µS
RES:RISE MAX
Set CR rise slew rate as 2.5A/µS.
Set CR fall slew rate as 1A/µS.
Set CR rise slew rate as the
maximum programmable value.
Set CR fall slew rate as the
minimum programmable value.
RES:FALL MIN
Query Syntax
: RESistance:RISE?
RESistance:FALL?
RESistance:RISE? MAX
RESistance:FALL? MIN
Return Parameters : <NR2> [Unit=OHM]
Query Example
: RES:RISE?
Return Example : 2.5
7.2.11
Return CR rise slew rate.
RUN Subsystem
:RUN
Type
Description
Syntax
7.2.12
: All Channel
: Set all electronic loads as “ON”.
: RUN
SHOW Subsystem
:SHOW
:DISPlay
SP
L
R
LRV
LRI
SHOW:DISPlay
Type
Description
Syntax
7-28
: Channel-Specific (Double Channel Module Only)
: Set the display mode of the electronic load.
: SHOW:DISPlay L
SHOW:DISPlay R
SHOW:DISPlay LRV
Language Dictionary
Parameters
Example
SHOW:DISPlay LRI
: L, R, LRV, LRI.
: SHOW:DISP L
SHOW:DISP R
SHOW:DISP LRV
SHOW:DISP LRI
7.2.13
Display the voltage and current
values of channel L.
Display the voltage and current
values of channel R.
Display the voltage value of
channel L and channel R.
Display the current value of
channel L and channel R.
SPECIFICATION Subsystem
:SPECification
:UNIT
VALUE/1
SP
PERCENT/0
<NR1>
?
:PASS
:VOLTage
?
<NR1>
:CURRent
<NR1>
?
:VOLTage
:H
SP
<NRf>
suffix
:L
:CURRent
:C
:TEST
<NR2>
?
ON/1
SP
OFF/0
?
SPECification:UNIT
Type
Description
Syntax
Parameters
Example
Query Syntax
Query Example
<NR1>
: All Channel
: Set the specific entry mode.
: SPECification:UNIT VALUE
SPECification:UNIT PERCENT
: VALUE/1, PERCENT/0
: SPEC:UNIT VALUE
SPEC: UNIT PERCENT
: SPECification:UNIT?
: SPEC:UNIT?
7-29
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
Return Parameters : <NR1>
Return Example : 0
SPECification:VOLTage?
Type
: Channel-Specific
Description
: Request GO-NG result reference to voltage specification.
Query Syntax
: SPECification:VOLTage?
Query Example
: SPEC:VOLT?
Returns voltage GO-NG result to CC
and CR modes.
Return Parameters : <NR1>
Return Example : 0 (NG), 1 (GO)
SPECification:CURRent?
Type
: Channel-Specific
Description
: Request GO-NG result reference to current specification.
Query Syntax
: SPECification:CURRent?
Query Example
: SPEC:CURR?
Return the current GO-NG result to CC
mode.
Return Parameters : <NR1>
Return Example : 0 (NG), 1 (GO)
SPECification?
Type
Description
Query Syntax
Query Example
Return Parameters
Return Example
: All Channel
: Request GO-NG result reference to all channel specification.
: SPECification?
: SPEC?
Returns all channel GO-NG result.
: <NR1>
: 0 (NG), 1 (GO)
SPECification:VOLTage
Type
: Channel-Specific
Description
: Set the voltage specification.
Syntax
: SPECification:VOLTage:H
SPECification:VOLTage:L
SPECification:VOLTage:C
Parameters
: For valid value range refer to respective specification.
Example
: SPEC:VOLT:H <NRf+> [suffix]
SPEC:VOLT:L <NRf+> [suffix]
SPEC:VOLT:C <NRf+> [suffix]
Query Syntax
: SPECification:VOLTage:H?
SPECification:VOLTage:L?
SPECification:VOLTage:C?
Query Example
: SPEC:VOLT:H?
Return Parameters : <NR2> [Unit=Voltage]
Return Example : 4.75
SPECification:CURRent
Type
: Channel-Specific
Description
: Set the current specification.
Syntax
: SPECification:CURRent:H
7-30
Language Dictionary
SPECification:CURRent:L
SPECification:CURRent:C
Parameters
: For valid value range refer to respective specification.
Example
: SPEC:CURR:H <NRf+> [suffix]
SPEC:CURR:L <NRf+> [suffix]
SPEC:CURR:C <NRf+> [suffix]
Query Syntax
: SPECification:CURR:H?
SPECification:CURR:L?
SPECification:CURR:C?
Query Example
: SPEC:CURR:H?
Return Parameters : <NR2> [Unit=Current]
Return Example : 4.75
SPECification:TEST
Type
Description
Syntax
: Channel-Specific
: Start or close the specification test.
: SPECification:TEST ON
SPECification:TEST OFF
Parameters
: ON/1, OFF/0
Example
: SPEC:TEST ON
SPEC: TEST OFF
Query Syntax
: SPECification:TEST?
Query Example
: SPEC:TEST?
Return Parameters : <NR1>
Return Example : 1
7-31
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
7.2.14
:STATus
STATUS Subsystem
:CHANnel
:CONDition
?
:ENABle
SP
<NR1>
?
:CSUMmary
:EVENt
?
:NTRansition
SP
:PTRansition
?
:ENABle
SP
<NR1>
<NR1>
?
:QUEStionable
:EVENt
?
:CONDition
?
:ENABle
SP
<NR1>
?
:EVENt
?
:NTRansition
SP
:PTRansition
?
<NR1>
STATus:CHANnel:CONDition
Type
: Channel-Specific
Description
: Return real time channel status.
Query Syntax
: STATus:CHANnel:CONDition?
Return Parameters : <NR1>
Bit Configuration of Channel Status register
Bit Position 15 14 13 12 11 10 9 8 7
Condition 0 0 0 0 0 0 0 0 0
Bit Weight
Query Example
Return Example
7-32
: STAT:CHAN:COND?
: 2048
6
0
5
0
4
3 2 1 0
OT RV OP OV OC
16 8 4 2 1
Return status of the electronic load.
Language Dictionary
STATus:CHANnel:ENABle
Type
: Channel-Specific
Description
: Masks for selecting which bits in the Event register are allowed
to be summed into the corresponding channel bit of the Channel
Summary Event register.
Syntax
: STATus:CHANnel:ENABle
Parameters
: 0 ~ 65535
Example
: STAT:CHAN:ENABl 24
Query Syntax
: STATus:CHANnel:ENABle
Return Parameters : <NR1>
Query Example
: STAT:CHAN:ENABL?
Return the contents of the Status
Channel Enable register.
Return Example : 24
STATus:CHANnel:EVENt?
Type
: Channel-Specific
Description
: Record all channel events that have occurred since last time the
register was read, and resets the Channel Event register.
Query Syntax
: STATus:CHANnel:EVENt?
Return Parameters : <NR1>
Query Example
: STAT:CHAN:EVEN?
Read and reset Channel Event
register.
Return Example : 24
STATus:CHANnel:PTRansition/NTRansition
Type
: Channel-Specific
Description
: Programmable filters that determine what type of transition
(0-to-1 or 1-to-0) in the Condition register will set the
corresponding bit of the Event register.
Syntax
: STATus:CHANnel:PTRansition/NTRansition <NRf>
Parameters
: 0 ~ 65535
Example
: STAT:CHAN:PTR 4
Sets OP(over power bit 2) as 0-to-1.
STAT:CHAN:NTR 4
Sets OP(over power bit 2) as 1-to-0.
Query Syntax
: STATus:CHANnel:PTRansition?
STATus:CHANnel:NTRansition?
Return Parameters : <NR1>
Query Example
: STAT:CHAN:PTR?
Inquires setting of Channel
PTRansition.
Return Example : 4
STATus:CSUMmary:ENABle
Type
: Channel-Specific
Description
: Masks for selecting which bits in the Channel Event register are
allowed to be summed into the CSUM (Channel Summary) bit
of the Status Byte register.
Syntax
: STATus:CSUMmary:ENABle
Parameters :
Bit Configuration of Channel Summary register
7-33
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
Bit Position 7 6 5 4 3
Channel
8 7 6 5 4
Bit Weight 128 64 32 16 8
Example
Query Syntax
Return Parameters
Query Example
Return Example
2
3
4
1
2
2
0
1
1
: STAT:CSUM:ENAB 3
: STATus:CSUMmary:ENABle?
: <NR1>
: STAT:CSUM:ENAB?
Return the setting of Channel
Summary Enable register.
:3
STATus:CSUMmary:EVENt
Type
: Channel-Specific
Description
: Indicate all channels on which an enable STAT:CHAN Event
has occurred since last time the register was read.
Syntax
: STATus:CSUMmary:EVENt
Parameters
:
Bit Configuration of Channel Summary register
Bit Position 7 6 5 4 3 2 1 0
Channel
8 7 6 5 4 3 2 1
Bit Weight 128 64 32 16 8 4 2 1
Example
Query Syntax
Return Parameters
Query Example
Return Example
: STAT:CSUM:EVEN 3
: STATus:CSUMmary:EVENt?
: <NR1>
: STAT:CSUM:EVEN?
Return the value of the Channel
Summary Event register.
:3
STATus:QUEStionable:CONDition
Type
: Channel-Specific
Description
: Real-time("live") recording of Questionable data
Query Syntax
: STATus:QUEStionable:CONDition?
Return Parameters : <NR1>
Query Example
: STAT:QUES:COND?
Return the channel status.
Return Example : 6
STATus:QUEStionable:ENABle
Type
: Channel-Specific
Description
: Masks for selecting which bits on the Event register are allowed
to be summed into the QUES bit of the Status Byte register.
Syntax
: STATus:QUEStionable:ENABle
Parameters :
Bit Configuration of Questionable Status register
7-34
Language Dictionary
Bit Position 15 14 13 12 11 10 9
Condition 0 0 0 0 0 0 0
Bit Weight
Example
Query Syntax
Return Parameters
Query Example
Return Example
8
0
7
0
6
0
5
0
4
3 2 1 0
TE RV PE VE CE
16 8 4 2 1
: STAT:QUES:ENAB 24
: STATus:QUEStionable:ENABle?
: <NR1>
: STAT:QUES:ENAB
Return the setting of the Status
Questionable Enable register.
: 24
STATus:QUEStionable:EVENt?
Type
: Channel-Specific
Description
: Record all Questionable conditions that have occurred since last
time the register was read.
Query Syntax
: STATus:QUEStionable:EVENt?
Return Parameters : <NR1>
Query Example
: STAT:QUES:EVEN?
Return the contents of the
Questionable Event register.
Return Example : 24
STATus:QUEStionable:PTRansition/NTRansition
Type
: Channel-Specific
Description
: Programmable filters determine what type of transition (0-to-1
or
1-to-0) in the Condition register will set the corresponding bit
of the Event register.
Syntax
: STATus:QUEStionable:PTRansition/NTRansition <NRf>
Parameters
: 0 ~ 65535
Example
: STAT:QUES:PTR 4
Sets OP(over power bit 2) as 0-to-1.
STAT:QUES:NTR 4
Sets OP(over power bit 2) as 1-to-0.
Query Syntax
: STATus:QUEStionable:PTRansition?
STATus:QUEStionable:NTRansition?
Return Parameters : <NR1>
Query Example
: STAT:QUES:PTR?
Return the setting on the
QUEStionable Ptransition/
Ntransition.
Return Example : 4
7-35
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
7.2.15
VOLTAGE Subsystem
:VOLTage
:L1
SP
:L2
?
<NRf+>
suffix
<NR2>
SP
MAX
MIN
:CURRent
SP
<NRf+>
suffix
<NR2>
?
MAX
SP
MIN
:MODE
SP
FAST/1
SLOW/0
?
VOLTage:L1/L2
Type
Description
Syntax
<NR1>
: Channel-Specific
: Sets voltage of static load during constant voltage mode.
: VOLTage:L1
VOLTage:L2
Parameters
: For valid value range refer to respective specification.
Example
: VOLT:L1 8V
Set voltage of load L1 as 8V.
VOLT:L2 24V
Set voltage of load L2 as 24V.
VOLT:L1 MAX
Set voltage of load L1 as the
maximum value.
VOLT:L2 MIN
Set voltage of load L2 as the
minimum value.
Query Syntax
: VOLTage:L1?
VOLTage:L2?
VOLTage:L1? MAX
VOLT:L2? MIN
Return Parameters : <NR2> [Unit=Voltage]
Query Example
: VOLT:L1?
Return the set voltage value of
load L1.
Return Example : 0
VOLTage:CURRent
Type
7-36
: Channel-Specific
Language Dictionary
Description
Syntax
Parameters
Example
: Set the current limit of constant voltage mode.
: VOLTage:CURRent
: For valid value range refer to respective specification.
: VOLT:CURR 3
Set loading current limit as 3A
during constant voltage mode.
VOLT:CURR MAX
Set loading current limit as the
maximum value during constant
voltage mode.
VOLT:CURR MIN
Set loading current limit as the
minimum value during constant
voltage mode.
Query Syntax
: VOLTage:CURRent?
Return Parameters : <NR2> [Unit=Amper]
Query Example
: VOLT:CURR?
Return Example : 3
VOLTage:MODE
Type
Description
Syntax
: Channel-Specific
: Sets the response speed of CV mode.
: VOLTage:MODE FAST
VOLTage:MODE SLOW
Parameters
: FAST/1, SLOW/0
Example
: VOLT: MODE FAST
VOLT:MODE SLOW
Query Syntax
: VOLTage:MODE?
Return Parameters : <NR1>
Query Example
: VOLT:MODE?
Return Example : 0
7-37
Status Reporting
8.
Status Reporting
8.1
Introduction
This chapter discusses the status data structure of the Chroma 6310 series electronic load
as shown in Figure 4-1(on the next page). The standard registers, such as the Event
Status register group, the Output Queue, the Status Byte and Service Request Enable
registers perform standard GPIB functions and are defined in IEEE-488.2 Standard Digital
Interface for Programmable Instrumentation. Other status register groups implement the
specific status reporting requirements of the electronic load. The Channel Status and
Channel Summary groups are used by multiple channel of electronic load to enable status
information to be kept at its own Status register of each channel.
8.2
Register Information in Common
Condition register
The condition register represents the present status of electronic load signals. Reading
the condition register does not change the state of its bits. Only changes in
electronic load conditions affect the contents of this register.
PTR/NTR Filter, Event register
The Event register captures changes in conditions corresponding to condition bits in a
condition register, or to a specific condition in the electronic load. An event
becomes true when the associated condition makes one of the following electronic
load-defined transitions:
Positive TRansition (0 - to - 1)
Negative TRansition (1 - to - 0)
Positive or Negative TRansition (0-to-1 or 1-to-0)
The PTR/NTR filters determine what type of condition transitions set the bits in the
Event register. Channel Status, Questionable Status allow transitions to be
programmed. Other register groups, i.e. Channel Summary, Standard Event Status
register group use an implied Rise (0-to-1) condition transition to set bits in the Event
register. Reading an Event register clears the register (all bits set to zero).
Enable register
The Enable register can be programmed to enable which bit in the corresponding
Event register is logically-ORed into the Channel Summary bit.
8-1
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
CHANNEL STATUS (ONE CHANNEL)
1
2
4
8
16
EVENT
1
2
4
8
16
1
2
4
8
16
1
2
4
8
16
ENABLE
CHANNEL SUMMARY
EVENT
0
1
2
3
4
5
6
7
CHAN 1
CHAN 2
CHAN 3
CHAN 4
CHAN 5
CHAN 6
CHAN 7
CHAN 8
ENABLE
1
2
4
8
16
32
64
128
2
4
8
16
32
64
128
LOGICAL OR
OC
0
OV
1
OP
2
RV
3
OT
4
N.U. 5-15
PTR/NTR
LOGICAL OR
CONDITION
QUESTIONABLE STATUS
CONDITION
LOGICAL OR
FROM CHAN 2
FROM CHAN 3
FROM CHAN 4
FROM CHAN 5
FROM CHAN 6
FROM CHAN 7
FROM CHAN 8
CE
0
OV
1
PE
2
RV
3
TE
4
N.U. 5-15
1
2
4
8
16
PTR/NTR
EVENT
1
2
4
8
16
1
2
4
8
16
1
2
4
8
16
ENABLE
LOGICAL OR
FROM CHAN 1
0
1
QYE
2
DDE
EXE
CME
N.U.
N.U.
3
4
5
6
7
EVENT
ENABLE
1
1
4
8
16
32
4
8
16
32
OUTPUT QUEUE
DATA
DATA
DATA
SERVICE
REQUEST
GENERATION
STATUS
BYTE
N.U.
N.U.
CSUM
QUES
MAV
ESB
MSS
N.U.
0
1
2
3
4
5
6
7
4
8
16
32
64
SERVICE
REQUEST
GENERATION
4
8
16
32
Figure 8-1 The Status Registers of Electronic Load
8-2
LOGICAL OR
OPC
N.U.
LOGICAL OR
STANDARD EVENTSTATUS
Status Reporting
Mnemonic Bit
0
OC
OV
1
OP
2
RV
3
OT
4
8.3
Value
1
Meaning
Overcurrent. When an overcurrent condition has occurred on
a channel, Bit 0 is set and remains set until the overcurrent
condition is removed and LOAD:PROT:CLE is programmed.
2
Overvoltage. When an overvoltage condition has occurred on
a channel, Bit 1 is set and remains set until the overvoltage
condition is removed and LOAD:PROT:CLE is programmed.
4
Overpower. An overpower condition has occurred on a
channel, Bit 2 is set and remains set until the overpower
condition is removed and LOAD:PROT:CLE is programmed.
8
Reverse voltage on input. When a channel has a reverse
voltage applied to it, Bit 3 is set. It remains set until the
reverse voltage is removed and LOAD:PROT:CLE is
programmed.
16
Overtemperature. When overtemperature condition has
occurred on a channel, Bit 4 is set and the channel is turned
off. It remains set until the channel has cooled down well
below the overtemperature trip point and LOAD:PROT:CLE
is programmed.
Table 8-1 Bit Description of Channel Status
Channel Status
The Channel Status register offers you one or more channel status conditions, which
indicate certain errors or faults have occurred on specific channel. Table 8-1 describes
the channel status conditions that are applied to the electronic load.
When the bits of the Channel Status Condition register are set, the corresponding
condition is true.
Program the PTR/NTR filter to select which way of a condition transition on a bit in
the Channel Status Condition register will set the corresponding bit in the Event
registers. Reading of the Channel Status Event register resets itself to zero.
The Channel Status Enable register can be programmed to specify which channel
status event bit is logically-ORed to become the corresponding channel bit in the
Channel Summary Event register.
8.4
■
Channel Summary
The Channel Summary registers summarize the channel status conditions of up to 8
channels.
When an enabled bit in the Channel Status Event register is set, it causes the
corresponding channel bit in the Channel Summary Event register to be set.
Reading of the Event register will reset it to zero.
The Channel Summary Enable register can be programmed to specify which channel
8-3
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
summary event bit from the existing channels is logically-ORed to become Bit 2
(CSUM bit) in the Status Byte register.
8.5
Questionable Status
The Questionable Status registers offer you one or more questionable status
conditions, which indicate certain errors or faults have occurred on at least one
channel. Table 4-2 lists the questionable status conditions that are applied to the
electronic load. These conditions are the same as the channel status conditions.
Refer to Table 4-1 for a complete description.
When corresponding bit of Questionable Status Condition register is set, the indicated
condition is true.
Program the PTR/NTR filter to select which way of a condition transition on a bit in
the Questionable Status Condition register will set the corresponding bit in the Event
registers.
Reading of the Questionable Status Event register will reset it to zero.
The Questionable status Enable register can be programmed to specify which
questionable status event bit is logically-ORed to become Bit 3 (QUES bit) in the
Status Byte register.
Mnemonic
CE/OC
OV
PE/OP
RV
TE/OT
Meaning
Current Error (Overcurrent).
Overvoltage.
Power Error (Overpower).
Reverse voltage on input.
Temperature Error
(Overtemperature).
Table 8-2 Bit Description of Questionable Status
8.6
■
■
■
8.7
Bit
0
1
2
3
4
Value
1
2
4
8
16
Output Queue
The Output Queue stores output messages until they are read from the electronic load.
The Output Queue stores messages sequentially on a FIFO (First-In, First-Out) basis.
When there are data in the queue, it sets it 4 (MAV bit) in the Status Byte register.
Standard Event Status
All programming errors that have occurred will set one or more of the error bits in the
Standard Event Status register. Table 4-3 describes the standard events that apply to
the electronic load.
Reading of the Standard Event Status register will reset it to zero.
The Standard Event Enable register can be programmed to specify which standard
event bit is logically-ORed to become Bit 5 (ESB bit) in the Status Byte register.
Mnemonic Bit
8-4
Value
Meaning
Status Reporting
OPC
0
QYE
2
DDE
3
EXE
4
CME
5
8.8
1
Operation Complete. This event bit generated is responding
to the *OPC command. It indicates that the device has
completed all selected pending operations.
4
Query Error. The output queue was read when no data were
present or the data in the queue were lost.
8
Device Dependent Error. Memory was lost, or self-test
failed.
16
Execution Error. A command parameter was outside the legal
range or inconsistent with the electronic load’s operation, or
the command could not be executed due to some operating
condition.
32
Command Error. A syntax or semantic error has occurred, or
the electronic load has received a <GET> within a program
message.
Table 8-3 Bit Description of Standard Event Status
Status Byte register
The Status Byte register summarizes all of the status events from all status registers.
Table 4-4 describes the status events that are applied to the electronic load.
The Status Byte register can be read with a serial poll or *STB? query.
The RQS bit is the only bit that is automatically cleared after a serial poll.
When the Status Byte register is read with a *STB? query, Bit 6 of the Status Byte
register will contain the MSS bit. The MSS bit indicates that the load has at least
one reason for requesting service. *STB? does not affect the status byte.
The Status Byte register is cleared by *CLS command.
Status Byte Bit Description
Mnemonic Bit
2
CSUM
Value
4
QUES
3
8
MAV
4
16
ESB
5
32
RQS/MSS 6
64
Meaning
Channel Summary. It indicates if an enabled channel event
has occurred. It is affected by Channel Condition, Channel
Event and Channel Summary Event registers.
Questionable. It indicates if an enabled questionable event
has occurred.
Message Available. It indicates if the Output Queue contains
data.
Event Status Bit. It indicates if an enabled standard event has
occurred.
Request Service/Master Summary Status. During a serial poll,
RQS is returned and cleared. For an *STB? query, MSS is
returned without being cleared.
Table 8-4 Bit Description of Status Byte
8-5
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
8.9
Service Request Enable register
The Service Request Enable register can be programmed to specify which bit in the
Status Byte register will generate service requests.
8-6
An Example of Use
9.
An Example of Use
In this chapter a basic example of controlling electronic load are provided for use of GPIB.
The GPIB used here is made by NI (National Instruments).
Examples:
#include “dec1.h”
#include <stdio.h>
#include <stdlib.h>
#include <sring.h>
#include <iostream.h>
#include <time.h>
static int MTA,
MLA;
static int bd;
const char LA = 0x20,
TA = 0x40;
static void setNi( int pad, char *cardName )
{
MTA = TA + pad;
MLA = LA + pad;
if ( (bd = ibfind ( cardName ) ) < 0 ) {
puts ( “GPIB Card Found Error” );
exit ( 1 );
}
if ( ibpad ( bd, pad ) & ERR ) {
puts ( “GPIB Card Address Assignment Error” );
exit ( 3 );
}
ibtmo ( bd, 10 );
ibsic ( bd );
ibsre ( bd, 1 );
}
static void Niwrite( int pad, char *cmdStr )
{
char cmd[4];
cmd[0] = UNL;
cmd[1] = UNT;
cmd[2] = MTA;
9-1
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
cmd[3] = LA + pad;
//
ibcmd( bd, cmd, 4 );
ibwrt ( bd, cmdStr, _fstrlen( cmdStr ) );
ibcmd( bd, cmd, 2 );
}
static char rxBuf[ 64 ]
static void Niread( int pad, char *queryStr )
{
char cmd[ 4 ];
Niwrite( pad, queryStr );
cmd[ 0 ] = UNL;
cmd[ 1 ] = UNT;
cmd[ 2 ] = TA + pad;
cmd[ 3 ] = MLA;
//
ibcmd( bd, cmd, 4 );
ibrd( bd, rxBuf, sizeof( rxBuf ) - 1 );
rxBuf[ ibcnt ] = ‘ \0 ’;
ibcmd( bd, cmd, 2);
}
void main( )
{
setNi( 0, “GPIB” );
// Set the status of PC’s GPIB CARD.
//
Niread( 8, “*IDN?” );
// Read back identity code of 6314.
cout << rxBuf << “ \n\r ”;
// Display on the screen of PC.
//
Niwrite( 8, “CHAN 1” );
// Set CHANNEL as 1.
//
Niread( 8, “CHAN:ID?” );
// Read back identity code of channel 1.
cout << rxBuf << “ \n\r ”;
// Display on the screen of PC.
//
Niwrite( 8, “MODE CCL” );
// Set CHANNEL 1 MODE as CCL.
Niwrite ( 8, “CURR:STATIC:L1 1” ):
// Set L1 current of CCL as 1A.
//
Niread( 8, “LOAD ON” );
// Start sinking current.
//
Niread( 8, “MEAS:VOLT?” );
// Measure the readings of voltage.
cout << rxBuf << “ \n\r ”;
// Display on the screen of PC.
//
Niread( 8, “MEAS:CURR?” );
// Measure the readings of current.
cout << rxBuf << “ \n\r ”;
// Display on the screen of PC.
9-2
An Example of Use
Niread( 8, “LOAD OFF” );
//
ibsic ( bd );
ibon1( bd, 0 );
ibsre ( bd, 0 );
// Stop sinking current.
}
For the above example please refer to Chapter 3, and add corresponding commands according
to setting and control.
Example of PROGRAM RUN
You can use the following control procedures to run the PROGRAM.
<1> PROGram:FILE 1
<2> PROGram:ACTive 15
// Set the PROGRAM FILE to be run
// Set the mapping action for Module Channel
// chan 1 - chan 8 mapping value weights are
// 1, 2, 4, 8, 16, 32, 64,128
<3> PROGram:CHAIN 0
// program chain file No.
<4> PROGram:ONTime 3
// on time setting
<5> PROGram:OFFTime 2
// off time setting
<6> PROGram:SEQuence 1
// Sequence No. setting
<7> PROGram:SEQuence:MODE AUTO
// Sequence mode setting
<8> PROGram:SEQuence:SHORt:CHANnel 1 // Sequence short channel setting
<9> PROGram:SEQuence:SHORt:TIME 1
// Sequence short setting
<10> PROGram:SEQuence 2
// sequence 2,sequence 3,....setting
<11> PROGram:SAVE
// Save program setting data
<12> PROGram:RUN
// Run PROGRAM
<13> PROGram:RUN?
// Check if PROGRAM is running
.
.
.
.
.
.
.
.
9-3
Programmable DC Electronic Load 6310 Series Operation & Programming Manual
PROGRAM 1 SEUENCE 1
ON TIME
P/F DELAY TIME
SHORT TIME
9-4
OFF TIME
PROGRAM X SEUENCE X

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