Gossen MetraWatt SPL 200 - 400 Operating instructions

Gossen MetraWatt SPL 200 - 400  Operating instructions
Operating Instructions
KONSTANTER SPL Series
Programmable DC Electronic Load
3-349-702-03
3/10.16
Table of Contents
Page Table of Contents
Safety Instructions ...................................................... 4 4
1
General Introduction ........................................................ 6
1.1
1.2
1.3
1.4
1.5
1.6
1.6.1
1.6.2
1.6.3
1.6.4
1.7
1.8
Function Features ..........................................................................6
Front Panel ...................................................................................7
Rear Panel ....................................................................................7
Keypad Function ............................................................................7
Displays ........................................................................................8
Menus ..........................................................................................9
Main Menu ....................................................................................9
Mode Selection and Parameter Setting Menu ..................................9
Transient Operation Menu ............................................................10
List Operation Menu ....................................................................10
Display Messages ........................................................................11
Remote Programming ..................................................................13
2
Functions and Features ................................................. 14
2.1
2.2
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.4
2.4.1
2.4.2
2.4.3
2.5
2.6
2.7
2.8
2.9
2.9.1
2.9.2
2.9.3
2.9.4
2.9.5
2.10
2.11
2.12
2.13
2.14
2.14.1
2.14.2
2.14.3
2.14.4
2.14.5
2.14.6
2.15
2.15.1
2.15.2
2.15.3
Front Panel Operation („Local“) and Remote Control Operation .......14
Programmable Functions .............................................................14
Basic Test Functions ....................................................................14
Constant Current Mode (CC) .........................................................15
Constant Voltage Mode (CV) .........................................................16
Constant Resistance Mode (CR) ....................................................17
Constant Power Mode (CP) ...........................................................18
Transient Operation .....................................................................19
Continuous Transient Operation ....................................................19
Pulsed Transient Operation ..........................................................20
Toggled Transient Mode ...............................................................22
List Operation ..............................................................................23
Battery Discharge Operation .........................................................24
Short Circuit Operation .................................................................24
Triggered Operation .....................................................................25
Input Control ...............................................................................26
Turning On/Off the Load ...............................................................26
Von Point / Von Latch ..................................................................26
Current Limit in CV Mode .............................................................27
Current Rise Rate ........................................................................27
Current Fall Rate ..........................................................................27
Measurement Function ................................................................28
Saving and Recalling ....................................................................28
Reading Remote Programming Errors ...........................................28
Status Report ..............................................................................29
Protection Function ......................................................................29
Clearing Latched Protection ..........................................................29
Overvoltage .................................................................................29
Overcurrent .................................................................................29
Overpower ..................................................................................29
Overtemperature .........................................................................29
Reverse Voltage ...........................................................................29
Auxiliary Functions .......................................................................30
Trigger Function Selection ............................................................30
Knob Function .............................................................................30
Key Sound ...................................................................................30
3
Installation ..................................................................... 30
3.1
3.2
3.3
3.4
3.5
3.6
Initial Check ................................................................................30
Environment/Installation Location ..................................................30
Power-On/ Self-Test ....................................................................30
Connections on the Rear Panel .....................................................31
Connections on the Front Panel ....................................................32
Wiring .........................................................................................32
2
Page
Local Operation .............................................................. 33
4.1
4.2
4.3
4.4
4.5
4.5.1
4.5.2
4.5.3
4.5.4
4.6
4.7
4.7.1
4.7.2
4.7.3
4.8
4.8.1
4.8.2
4.8.3
4.9
4.10
4.11
4.12
4.13
4.14
4.14.1
4.14.2
4.14.3
4.14.4
4.14.5
4.14.6
4.14.7
4.14.8
4.14.9
Local Control ...............................................................................33
Main Operation on the Front Panel ...............................................33
Connecting to the Power Supply ...................................................33
Turning the Input On/Off ..............................................................33
Basic Operation ...........................................................................33
CC Mode ....................................................................................34
CV Mode .....................................................................................35
CR Mode ....................................................................................36
CP Mode .....................................................................................37
Short Circuit Operation .................................................................38
Transient Operation .....................................................................39
Continuous Transient Operation ....................................................39
Pulsed Transient Operation ..........................................................40
Toggled Transient Operation ........................................................41
Sequence Operation (List) ............................................................42
Sequence (List) editing .................................................................43
Modifying, Adding, Inserting, Deleting Sequences ..........................44
Starting/Stopping the List .............................................................45
Battery Discharge Operation .........................................................45
Saving and Recalling ...................................................................46
Clearing Protection Settings .........................................................47
Error Messages ...........................................................................47
Triggered Operation .....................................................................48
Main Menu .................................................................................48
Loading Default Values ................................................................48
Short Circuit Operation .................................................................49
Von Point/Von Latch ....................................................................49
Current Limit in CV Mode .............................................................50
Current Rise/Fall Rate in CC Mode ................................................50
Trigger Function Selection ............................................................51
Knob Function .............................................................................51
Key Sound ..................................................................................51
Communication Interface .............................................................51
5
Remote Programming Operation .................................... 52
5.1
5.1.1
5.1.2
5.1.3
5.2
5.3
5.4
5.5
5.6
5.6.1
5.6.2
5.6.3
5.7
5.8
5.9
5.10
5.11
Communication Interface .............................................................52
RS232 ........................................................................................52
USB ............................................................................................52
GPIB ...........................................................................................52
Flow Control Selection .................................................................52
Remote Control Indicator ..............................................................52
Sending a Remote Command .......................................................52
Returning Data ............................................................................52
Remote Programming Commands ................................................52
Modes ........................................................................................52
Transient Levels ..........................................................................52
Programmable Current Protection .................................................53
CC Mode Examples .....................................................................53
CV Mode Examples ......................................................................53
CR Mode Examples .....................................................................53
Continuous Transient Operation Example ......................................53
Pulsed Transient Operation Example .............................................54
6
Specifications ............................................................... 55
7
Repair and Replacement Parts Service .......................... 59
8
Product Support ............................................................. 59
GMC-I Messtechnik GmbH
Safety Instructions
!
Attention!
These operating instructions include all necessary safety
precautions for personal safety, as well as for preventing
damage to the power supply and any devices connected
to it.
The following general safety precautions must always be adhered
to during operation, maintenance and repair of the device. Noncompliance with these safety precautions, or with other explicit
warnings included in these operating instructions, is deemed a
violation of design-specific safety standards and use for intended
purpose. The manufacturer assumes no liability in the event of
noncompliance with these safety precautions.
Fuse
The fuse is located in proximity to the mains power inlet plug on
the back of the device.
Observe the following points if input voltage is changed and/or
the fuse is replaced:
1
The on/off switch must be turned off and the power supply
must be disconnected from all other devices before changing
input voltage and/or replacing the fuse.
2
Press the fuse holder with a screwdriver and the fuse pops
out.
3
Pull the fuse out and replace it with a new fuse which complies with the specifications on the label next to the mains
power inlet plug.
!
Safety Precautions
1 The device may only be operated in accordance with the procedures included in these operation instructions.
2
High-voltage conducting components are located inside the
device, which may not be contacted directly.
3
Read the operating instructions carefully before placing the
instrument into service, in order to assure your own safety.
4
The device must be grounded.
The device is equipped with a protective earth terminal. The
device chassis and the housing must be grounded in order to
eliminate the danger of electrical shock. The device may only
be connected to mains power by means of a 3 conductor
cable, and the protective conductor must be securely connected to the protective conductor terminal of the mains outlet.
5
Keep away from voltage conducting electrical circuits!
Operating personnel may not remove any of the device's covers. Only trained personnel are permitted to replace components and change internal settings. Components may not be
touched as long as the power cable is connected.
Dangerous voltage may be present even after the power cable
has been disconnected from the mains. The device must be
disconnected from the mains, electrical circuits must be discharged and external voltage sources must be disconnected
before touching any components, in order to prevent personal
injury.
The device may not be modified, and only original replacement parts may be used.
In order to assure uninterrupted functionability of the device's
safety features, it may only be maintained and/or repaired by
qualified service providers.
4
Attention!
Use approved fuse types only in order to prevent damage to the device.
If input voltage needs to be changed, replace the fuse as
described above and then set the voltage selector switch to
the desired position (230 V AC or 115 V AC). The selected
input voltage appears at the selector switch.
Power Supply Output Terminals
1 For reasons of safety, make sure that there are no short-circuits between the positive and negative terminals. The device
is equipped with short-circuit protection, but a short-circuit
may result in injury to the user.
2
The output cable must be insulated all the way up to the connected power consumer.
!
Attention!
It is imperative that the hazard notes be strictly observed!
3
The electronic load is equipped with heavy current screw terminals
of protection type IP00 for connection to power sources.
4
The electronic load may be connected with DC current sources up to
a voltage of :
SPL 250-30 as well as SPL 400-40: max. 84 V DC
SPL 200-20 as well as SPL 350-30: max. 210 V DC
If the load is connected with a voltage greater than the standardized
safety-low voltage, the user must take care to ensure that a sufficiently safe cover against accidental contact is provided.
Connecting the Power Cable
1 Examine the voltage selector switch on the back of the device
in order to assure that the selected voltage coincides with
available mains power. If this is not the case, observe the note
printed on the device's mains inlet plug, and make sure that
the correct fuse is utilized.
2
The on/off switch in the device's front panel must be switched
off before the power supply is connected to the mains.
3
Connect the 3 conductor cable with plug to the mains outlet.
The device must be connected to the protective earth conductor.
4
Press the switch on the front panel in order to turn the device
on. The device is now ready for operation.
GMC-I Messtechnik GmbH
3
1
General Introduction
SPL Series programmable electronic load, a new product generation by GOSSEN METRAWATT, is designed for high performance. It
provides you with powerful test functions and user-friendly HMI, RS232, USB, GPIB interfaces to support SCPI and Labview. Electronic loads of the SPL series are widely used in scientific research and production fields such as aerospace, shipbuilding, automotive
electronics, solar cell, and fuel cell.
All “electronic load” and “load” which appear in this manual refer to SPL Series Electronic Load by
GOSSEN METRAWATT if there is no special explanation.
1.1
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
4
Function Features
4 basic test functions: CC,CV, CR, and CP; 8 basic operating modes: CCL, CCH, CV, CRL, CRM, CRH, CPV, CPC;
The 24 bits A/D and 17 bits D/A converters incorporated, provide this equipment with greatly enhanced setting and measurement
resolution. 100kHz D/A conversion rate fully improves high-speed performance;
Minimum operating voltage is less than 0.6 V (80 V-Loads) or 1,2 V (200 V-Loads) at the load’s full rated current.
Perfect protection assures high reliability in the most complicated test environments;
Innovative design of CPV and CPC modes effectively improves the practicability of CP mode;
Circuit improvement greatly enhances the dynamic response of CR mode and widens the application scope of that mode;
High-speed transient operation with separate setting options for high and low level, rise and fall time.
Powerful sequential test function; with a minimum step time of 10 μs; and a maximum step time of 10000 s. Cyclic numbers can be
adjusted freely and a sequence can be chained to another sequence to achieve even more complex test procedures;
The input binding posts with their innovative design are especially suitable for large current testing;
Provides short-circuit test, battery discharge test and other auxiliary functions;
A high-efficiency, intelligent cooling system can effectively reduce system temperature and enhance power density
Automatic ON/OFF function simplifies test operation;
Knobs and digital keypad makes the operation more convenient;
Save/recall function can save multiple groups of general settings;
Supports SCPI (Standard Commands for Programmable Instrumentation) and Labview, and provides necessary PC software.
GMC-I Messtechnik GmbH
1.2
Front Panel
➁
➀
➇
➈
➆
12
11
➉
➂
Figure 1.1
1
➄
➅➁
➅
LCD
Function key
3
Power switch
4
External trigger input terminal
5
Remote sense terminal
6
Input bindiing ports
7
Knob
8
Entry keys / Secondary function keys
9
LED displays (remote and fault status)
10
Function selector switch key
11
Left & Right key
12
Up/Down keys, display selector switch key
Rear Panel
Figure 1.2
Rear Panel
1
AC input socket
2
Line voltage switch
3
Fuse holder
4
RS232 interface
5
GPIB or USB interface (optional)
1.4
➄
Front Panel
2
1.3
➃
Keypad Function
There are three groups of keypads on the front panel: the Function Keys, the Entry Keys, which composite with secondary functions,
and the Direction Keys. The secondary functions of the Entry Keys are printed in blue. To use the secondary function, please press
key first, then press the relevant key.
GMC-I Messtechnik GmbH
5
Liste 1.1 Description of Keys
„Local“ key
„Save“ key
„Recall“ key
„Error“ key
„Start“ key (for sequence)
„Stop“ key (for sequence)
„Battery“ key (for battery discharge mode)
„Insert“ key
„Delete“ key
„List“ key (for sequence)
„Trigger“ key
„Clear“/„ProtClear“ key to quit the selected menu
„Menu“ key for main menu
„Tran“ key for transient operation
„Set“ key for operating mode / Parameter
„Input on/off“ key
„Enter“ key
(represented as Enter in the manual)
„Left“ cursor key
(represented as ◄ in the manual)
„Right“ cursor key
(represented as ► in the manual)
„Up“ cursor key
(represented as ▲ in the manual)
„Down“ cursor key
(represented as ▼ in the manual)
„2nd“ key (function selector switch)
Note
▲ ▼ keys can be used as a selector switch keys for displaying load status and actual power during basic operating modes.
1.5
Displays
REM Indicates that the electronic load is in remote status.
Indicates that a remote programming error has occurred.
6
GMC-I Messtechnik GmbH
1.6
Menus
1.6.1 Main Menu
Press
key to enter into main menu. Please see the list below for main menu content:
List of available functions and parameters:
Function/Parameter
Description
Load Default
Yes *No
Restore default
Yes *No
Short
On *Off
Short circuit mode
On *Off
Von Latch
On *Off
Von Latch
On *Off
Von Point
0.000v
Set Von voltage point
Von point
CV Curr Limit
40.00A
Current limit in CV mode
Current limit
Curr Rise Rate
4,000A/us
Current rise rate in CC mode
Current rise rate
Curr Fall Rate
4,000A/us
Current fall rate in CC mode
Current fall rate
Trig Function
*Tran List
Trigger function selection
Transient test
Sequence test (list)
Knob
On *Off
Enable/disable knob function
On *Off
Key Sound
On *Off
Enable/disable key sound
On *Off
Interface
*RS232 USB GPIB
Remote interface selection
RS232 USB GPIB
RS232 interface
Baud rate
2400 4800 *9600 19200 38400
Baud rate setting
2400 4800 9600 19200 38400
Parity Check
*None Even Odd
Parity check setting
None Even Odd
Data Bit
*8 7
Data bits length
8bits 7bits
Stop Bit
*1 2
Stop bit length
1bit 2bits
Flow Control
On *Off
Enable/disable flow control
On *Off
USB interface
USB selection
GPIB interface
GPIB address
5
GPIB address
Address value
Note
Except knob, key sound and interface configurations, the other parameters in main menu will not be saved when the load is
key and
key or *sav command. When the load is turned
turned off. If it is needed to save the parameters, please use
on next time, the saved parameters in location 0 will be
recalled automatically.
1.6.2 Mode Selection and Parameter Setting Menu
Press
key to enter into mode selection and parameter setting menu, which is shown as below:
Function / Parameter
Description
MODE : CCL
CURR : 0.000A
Constant current low range
Immediate current level
MODE : CCH
CURR : 0.000A
Constant current high range
Immediate current level
MODE : CV
VOLT : 80.00V
Constant voltage mode
Immediate voltage level
MODE : CRL
RES : 2.000Ω
Constant resistance low range
Immediate resistance level
MODE : CRM
RES : 20.000Ω
Constant resistance medium range
Immediate resistance level
MODE : CRH
RES : 20.000Ω
Constant resistance high range
Immediate resistance level
MODE : CPV
POWR : 0.000W
Constant power-voltage source mode
Immediate power level
GMC-I Messtechnik GmbH
7
Function / Parameter
Description
MODE : CPC
POWR : 0.000W
Constant power-current source mode
Immediate power level
1.6.3 Transient Operation Menu
Press
key in desired mode to enable its transient operation, and press
shown as below:
Function
Description
Example
LevelL
Transient low level
1.000 A
LevelH
Transient high level
2.000 A
TimeL
Time for transient low level
600.00 ms
TimeH
Time for transient high level
600.00 ms
TimeR
Time for transient rising edge
0.01 ms
TimeF
Time for transient falling edge
0.01 ms
MODE
Continuous (Cont) Pulse (Puls) Toggle (Togg)
Cont
key to enter into transient setting menu, which is
Note
Transient operation may be used in CC, CV, and CR modes.
1.6.4 List Operation Menu
Press
key and
key to enter into the list operation menu, which is shown as below:
Function
Description
No.
Select sequence (list) number (0-6)
Memo
Sequence memo (10 characters)
Data: <New/Edit>
Create a new or edit an existing sequence
Count
Cycle times (1-65535)
Chain: Off
Sequence number to be chained with (0-6, off)
Press ▲ and ▼ keys in list operation menu to select Data: <New/Edit>, and select New or Edit with the knob or ◄ and ► keys.
Then press key to Enter into sequence data editing status, which is shown as below:
Function
01.
CCH
8
Description
10000.00000s
5.000A
Sequence (list) number
Mode
Time
Setting value
GMC-I Messtechnik GmbH
1.7
Display Messages
➀ CC Mode:
The first line shows measured voltage and current levels. The second line shows current setpoint, CC mode (CCH indicates constant
current high range; CCL indicates constant current low range) and input status of the load: (ON, OFF).
➁ CV Mode:
The first line shows measured voltage and current levels.
The second line shows voltage setpoint, CV mode, and input status of the load: (ON, OFF).
➂ CR Mode:
The first line shows measured voltage and current levels.
The second line shows resistance level, CR mode (CRL indicates constant resistance low range; CRM indicates constant resistance
medium range; and CRH indicates constant resistance high range) and input status of the load: (ON, OFF).
GMC-I Messtechnik GmbH
9
➃ CP Mode:
The first line shows measured voltage and current levels.
The second line shows power setpoint, CP mode (CPC indicates constant power-current source mode; CPV indicates constant
power-voltage source mode), and input status of the load: (ON, OFF).
➄ Transient Operation:
The first line shows measured voltage and current levels.
The second line shows setpoint level, transient operation mode („t“ stands for transient) and input status of the load: (ON, OFF).
➅ List Operation:
The first line shows measured voltage and current levels.
The second line shows setpoint, sequence operation mode (“L” indicates list test); and input status of the load: (ON, OFF).
➆ Battery Discharge Operation:
The first line shows measured voltage and current levels.
The second line shows the consumed battery power (in Ah) and discharge time.
10
GMC-I Messtechnik GmbH
➇ Short Circuit Operation:
The first line shows measured voltage and current levels.
The second line shows setpoint level in short circuit, short circuit operation mode (“s” indicates short circuit test), and input status of
the load (ON, OFF).
➈ Display Momentary Power:
Pressing ▲ and ▼ key can switch between the display of load status and momentary power. On the display screen of actual power,
the first line shows momentary voltage and current.
The second line shows setting value and power level.
➉ Protection Status:
If the protection function has been activated, LCD will display corresponding protection status.
Example: The display of reverse voltage protection status is shown as below:
Protection status includes overcurrent (OC), overvoltage (OV), overpower (OP), over temperature (OT), load protection (PT), and reverse
voltage (RV).
1.8
Remote Programming
The commands are sent to electronic load via remote interface (RS232, GPIB, USB), and will be executed after decoding by the processor. If there is any error occurs to the command, the processor can detect the wrong command and error type, and it can maintain
the status register as well.
GMC-I Messtechnik GmbH
11
2
Functions and Features
2.1
Front Panel Operation („Local“) and Remote Control Operation
SPL Series electronic load can be controlled via the keypad and knobs in the front panel, or by remote controller via remote interface. If
it is needed to control the load via the front panel, the load has to stay in local control status. Local (front panel) control is in effect
immediately after power is applied. The REM indicator is turned on, and remote control goes into effect as soon as the load receives a
SYSTem:REMote command via RS232, USB or GPIB interface.
key ). All
Under remote control status, all operations on front panel keypad and knobs become invalid (except
key and
operations on electronic load are controlled by remote controller. The electronic load will return to local control and REM remote control
indicator is turned off after receiving the return command (SYSTem:LOCal).
Alternatively, you can return the electronic load to local control by pressing
key and
key.
Details of local operation are covered in Chapter 4 „Local Operation“ and fundamentals of remote programming are given in Chapter 5
„Remote Programming Operation“.
Complete SCPI programming details are given in the SCPI Programming Guide for SPL Loads.
2.2
•
•
•
•
•
•
•
•
2.3
Programmable Functions
CC (constant current) Mode: CCL, CCH
CV (constant voltage) Mode: CV
CR (constant resistance) Mode: CRL, CRM, CRH
CP (constant power) Mode: CPV, CPC
Transient Operation: Tran
List Operation: LIST
Battery Discharge Operation: BATTERY
Short Circuit Operation (Short)
Basic Test Functions
There are four basic test functions:
•
•
•
•
Constant current (CC),
Constant voltage (CV),
Constant resistance (CR),
Constant power (CP).
The operating mode and the associated parameters can be set via front panel or remote command. The load will remain in current
mode until the mode is changed. If the mode is changed when the load’s input is in ON status, the load will be turned off for around
5 milliseconds automatically.
The setting values for electronic load become effective immediately when the load is turned on. If the input set value exceeds the
allowed range, it will be automatically limited at maximum value or minimum value.
12
GMC-I Messtechnik GmbH
2.3.1 Constant Current Mode (CC)
Constant current mode has two ranges, the high range (CCH) and the low range (CCL). The high range provides wider test range.
The low range provides better resolution at low current settings.
In CC mode, the load will sink a constant current in accordance with the programmed value regardless of the change of input voltage
key in basic mode to enter into mode selection and parameter setting menu.
(see Figure 2.1). Press
Choose CCH or CCL mode with ▲ and ▼ keys. Input the current level via the Entry keys or the knob with ◄and ► keys. Use the Enter
key for confirmation. The CC mode and parameters can also be set via remote command (MODE CCL, MODE CCH, CURRent
<NRf+>).
Input Voltage
V
Setpoint Current
I
Input Current
Figure 2.1 Constant Current Mode (CC)
2.3.1.1
Setting Ranges
In CC mode low range (CCL), the setting range for the current setpoint is 0 ... 10% of the maximum nominal input current, respectively.
In CC mode high range (CCH), the setting rane for the current setpoint is 0 ... 100% of the maximum nominal input current, respectively.
If the mode is changed when the load’s input is in ON status, the load will be turned off for around 5 milliseconds automatically. For
example: when the load is switched from CCL to CCH, the input will be turned off around 5 milliseconds.
Besides, it is noted that the current setpoint may change with the current level to fit the new range.
Example: the present setting is CCH 10.000 A, when the load is switched from CCH to CCL, the current setpoint level will change to
the maximum level of 4.0000 A (SPL 400-40) for CCL.
2.3.1.2
Immediate Current Level
The immediate current level refers to the current set value in CC mode, which can be programmed via mode selection and parameter
setting menu, or via remote command (CURRent <NRf+>). The immediate current level can also be modified directly with ◄ ► cursor
keys ( ) and the knob.
2.3.1.3
Triggered Current Level
The triggered current level refers to the preset current value, which can become immediate current level automatically when a trigger is
received. If the CC mode and the input are enabled, the input will be updated immediately when a trigger occurs. If the CC mode is not
active, this current level will have no effect on the input until the CC mode becomes active. The triggered current level only can be set
via remote command (CURRent:TRIGgered <NRf+>). Once a current level is triggered, subsequent triggers will become invalid until
another (CURRent:TRIGgered <NRf+>) command is received.
The trigger operation is described in detail in one of the following chapters. The status register of the electronic load can keep track of
pending triggers and other operating conditions, which will be described in detail in the “SPL SCPI Programming Guide”.
2.3.1.4
Transient Current Level
The load will switch between the transient high current level (LevelH) and transient low current level (LevelL) when the transient operation is enabled. The transient current level can be set in transient operation menu from the front panel, or via remote command
(CURRent:HIGH <NRf+>, CURRent:LOW <NRf+>).
2.3.1.5
Programmable Maximum Current Level
Via a remote command (CURRent:PROTection <NRf+>) a maximum current level can be set 0 ... 100% of the maximum nominal input
current, resp.). If this level is exceeded beyond a programmable time delay (0.001 ... 60 s), an acoustic alarm signal is generated and
the load is switched off. The maximum current level can be programmed in all operating modes.
GMC-I Messtechnik GmbH
13
2.3.2 Constant Voltage Mode (CV)
In CV mode, the load will attempt to sink enough current to control the source voltage to the programmed constant value regardless of
the change of input current. (see Figure 2.2). Press
key in basic mode to enter into mode selection and parameter setting menu.
Choose CV mode with ▲ and ▼ cursor keys. Input the voltage setpoint value via the Entry keys or the knob with ◄ ► cursor keys.
Press Enter for confirmation.
The CV mode and parameters can also be set via remote command (MODE CV, VOLTage <NRf+>).
Input Voltage
V
Voltage Setpoint Value
I
Input Current
Figure 2.2
2.3.2.1
Constant Voltage Mode (CV)
Setting Ranges
The setting range for voltage is 0 ... 80 V or 0 ... 200 V, depending on the model.
2.3.2.2
Immediate Voltage Level
The immediate voltage level refers to the voltage setpoint value in CV mode, which can be set via mode selection and parameter setting menu, or via remote command (VOLTage <NRf+>). The immediate current level can also be modified directly with the ◄ ►cursor
keys and the knob in CV mode.
2.3.2.3
Triggered Voltage Level
The triggered voltage level refers to the preset voltage value, which can become immediate voltage level automatically when a trigger is
received. If the CV mode and the input are enabled, the input will be updated immediately when a trigger occurs. If the CV mode is not
active, this voltage level will have no effect on the input until the CV mode is active. Once a voltage level is triggered, subsequent triggers will become invalid until another (VOLTage:TRIGgered <NRf+>) command is received.
The trigger operation will be described in later chapter. The status register of the electronic load can keep track of pending triggers and
other operating conditions. which will be described in details in the “SPL SCPI Programming Guide”.
2.3.2.4
Transient Voltage Level
The load will switch between the transient high voltage level (LevelH) and transient low voltage level (LevelL) when the transient operation is enabled. The transient voltage level can be set in transient operation menu from the front panel, or via remote command
(VOLTage:HLEVel <NRf+>, VOLTage:LLEVel <NRf+>).
14
GMC-I Messtechnik GmbH
2.3.3 Constant Resistance Mode (CR)
Constant resistance mode has three ranges: the low range (CRL), the medium range (CRM), and the high range (CRH). In CR mode,
the load is equivalent to a constant resistance and will sink a current linearly proportional to the input voltage in accordance with the
key in basic mode to enter into mode selection and parameter setprogrammed resistance to make I=U/R (see Fig.2-3). Press
ting menu. Choose CR mode with ▲ and ▼ keys. Input the resistance value via the Entry keys or the knob and with ◄ and ► keys.
Use Enter key for confirmation. The CR mode and parameters can also be set via remote command (MODE CRL, MODE CRM, MODE
CRH, RESistance <NRf+>).
Input Voltage
V
Slope
(Resistance
Setpoint)
I
Input Current
Figure 2.3
2.3.3.1
Constant Resistance Mode (CR)
Setting Ranges
Constant resistance 80 V models
low value range (CRL) = 0.02 ... 2 Ω,
medium value range (CRM) = 2 ... 200 Ω,
high value range (CRH) = 20 ... 2000 Ω.
Constant resistance 200 V models
low value range (CRL) = 0.0666 ... 6.66 Ω,
medium value range (CRM) = 6.66 ... 666 Ω,
high value range (CRH) = 66.6 ... 6660 Ω.
Each time the setting range is changed while the load‘s input stays in ON status, the load will be turned off for around 5 milliseconds.
For example, when the load is switched from CRL to CRH, the input will be turned off around 5 milliseconds. Besides, it is noted that
the resistance setpoint may change with the resistance range to fit the new range.
Example: the present setting is CRM 10.000 Ω, when the load is switched from CRM to CRL, the resistance setpoint will change to the
maximum level 2.0000 Ω for CRL.
2.3.3.2
Immediate Resistance Level
The immediate resistance level refers to the resistance setpoint value in CR mode, which can be set via mode selection and parameter
setting menu, or via remote command (RESistance <NRf+>). The immediate resistance level can also be modified directly with the ◄
► keys and the knob in CR mode.
2.3.3.3
Triggered Resistance Transition
The triggered resistance transition refers to the preset resistance setpoint value, which can become immediate resistance setpoint
value automatically when a trigger is received. If the CR mode and the input are enabled, the input will be updated immediately when a
trigger occurs. If the CR mode is not active, this resistance level will have no effect on the input until the CR mode becomes active.
The triggered resistance level only can be set via remote command (RESistance:TRIGgered <NRf+>). Once a resistance level is triggered, subsequent triggers will become invalid until another (RESistance:TRIGgered <NRf+>) command is received. The trigger operation will be described in later chapter. The status register of the electronic load can keep track of pending triggers and other operating
conditions, which will be described in details in the “SPL SCPI Programming Guide”.
2.3.3.4
Transient Resistance Level
The load will switch between the transient high resistance level (LevelH) and transient low resistance level (LevelL) when the transient
operation is enabled. The transient resistance level can be set in transient operation menu from the front panel, or via remote command
(RESistance:HIGH<NRf+>, RESistance:LOW <NRf+>).
GMC-I Messtechnik GmbH
15
2.3.4 Constant Power Mode (CP)
There are two sorts of constant power modes, the Constant Power-Voltage Source mode (CPV) and the Constant Power-Current
Source mode (CPC). The CPV mode is applied to voltage source test, and the CPC mode is applied to current source test. In CP
mode, the load consumes the constant power in accordance with the programmed value regardless of the changes of external current
key to enter into mode selection and parameter setting menu. Choose CPV or CPC mode
and voltage (see Figure 2.4). Press the
with ▲ and ▼ keys.
Input the power value via Entry keys or the knob with ◄ and ► keys. Use Enter key for confirmation. The CP mode and parameters can
also be set via remote command (MODE CPV, MODE CPC, POWer <NRf+>).
V
CPV Mode
Constant Power Curve
V1
U/I Characters of Power Supplies
CPC Mode
V2
I1
Figure 2.4
I2
I
Constant Power Mode (CP)
Figure 2.5 shows the current-voltage curves for several common power supplies. The constant power curve is a hyperbola in the first
quadrant. The constant power curve usually intersects with current-voltage curve at two points (the CPV point and the CPC point)
when the power of the external power supply is larger than the set power. At the CPV point, the power supply shows the feature of
voltage source: the output power will be increased with increasing current; at the CPC point, the power supply shows the feature of
current source: the output power will be increased with increasing voltage. SPL Series electronic load can be set at any one of intersection points to be operated by the user.
Figure 2.5
Current-voltage Curves for Normal Power Supply
As it adopts the advanced slope detection method, SPL 250-30/SPL 400-40 Series electronic load only needs to test a part of the current-voltage curve to know whether the two curves (constant power curve and current-voltage curve) intersect. Therefore, when the
set power is larger than the actual power, the external power supply will not be short-circuited by the load for the insufficient power.
When the load detects that the power of the external power supply is insufficient, it will try to find constant power point automatically till
the set power is met.
2.3.4.1
Setting Ranges
The setting range for the power setpoint value for both CPV and CPC mode is 0 ... 250 W (SPL 250-30), for 0 ... 400 W (SPL 400-40),
for 0 ... 200 W (SPL 200-20) and for 0 ... 350 W (SPL 350-30).
2.3.4.2
Immediate Power Level
The immediate power level refers to the power set value in CP mode, which can be set via mode selection and parameter setting
menu, or via remote command (POWer <NRf+>). The immediate resistance level can also be modified directly with ◄ ► cursor keys
and the knob.
2.3.4.3
Triggered Power Level
The triggered power level refers to the preset power value, which can become immediate power level automatically when a trigger is
received. If the CP mode and the input are enabled, the input will be updated immediately when a trigger occurs. If the CP mode is not
active, this power level will have no effect on the input until the CP mode becomes active. The triggered power level only can be set via
remote command (POWer:TRIGgered <NRf+>). Once a power level is triggered, subsequent triggers will become invalid until another
(POW:TRIG<NRf+>) command is received. The trigger operation will be described in later chapters. The status register of the electronic
load can keep track of pending triggers and other operating conditions, which will be described in detail in the “SPL SCPI Programming
Guide”.
16
GMC-I Messtechnik GmbH
2.4
Transient Operation
When the transient operation is enabled, the load periodically switches between two levels (LevelH and LevelL), which can be applied
to test the dynamic characteristics of the power supply. The transient operation can be executed in the CC, CV and CR modes, and
has three operating statuses: Continuous, Pulsed, and Toggled. Please make sure the List Operation has been disabled before
enabling transient operation.
The parameters associated with transient operation are: low level (LevelL), high level (LevelH), low level time (TimeL), high level time
(TimeH), time for rising edge (TimeR), time for falling edge (TimeF), and operating mode.
Transient high/low level and corresponding CC, CV and CR modes share the same setting ranges.
The range for high/low level time is 0 ~ 655.35ms; the range for rising/falling edge time is 10 μs ~ 655.35ms; the time resolution is
10 μs, and the maximum test frequency is 50 kHz.
Transient test can be turned on and off via
key at the front panel or via remote command (TRANsient ON/OFF). Before you turn
on transient test, you should set the load to the operating mode that needs transient test.
!
!
Attention!
In transient operation, the operating mode cannot be changed.
Attention!
In transient test, the Von point and current limit should be taken into consideration, which may cause the shut down of the
input, thus interrupting the transient test.
2.4.1 Continuous Transient Operation
In continuous operation, the load periodically switches between high/low levels.
The relevant parameters such as
– low level (LevelL),
– high level (LevelH),
– low level time (TimeL),
– high level time (TimeH),
– time for rising edge (TimeR),
– time for falling edge (TimeF) und
– continuous transient operation (cont)
can be set through transient operation menu or via remote command
– (CURRent:LLEVel <NRf+>,
– CURRent:HLEVel <NRf+>,
– VOLTage:LLEVel <NRf+>,
– VOLTage:HLEVel <NRf+>,
– RESistance:LLEVel <NRf+>,
– RESistance:HLEVel <NRf+>,
– TRANsient:LTIMe <NRf+>,
– TRANsient:HTIMe <NRf+>,
– TRANsient:RTIMe <NRf+>,
– TRANsient:FTIMe <NRf+>,
– TRANsient:MODE CONTinuous)
Example: assume that the CCH range is active, and the input is in OFF status, then the transient parameters should be set as follows:
Press
key to enter into transient operation.
Press
key to open transient operation menu.
Set the following parameters in transient operation menu:
LevelL
5.000 A
LevelH
10.000 A
TimeL
0.50 ms
TimeH
0.50 ms
TimeR
0.20 ms
TimeF
0.20 ms
Mode
Cont
Then press
key to turn on the input;
GMC-I Messtechnik GmbH
17
Or via remote command to set:
SCPI Command
Description
TRAN ON
Enables transient operation
CURR:LOW 5
Sets transient current low level to 5 A
CURR:HIGH 10
Sets transient current high level to 10 A
TRAN:LTIM 500 μs
Sets transient low level time to 500 μs
TRAN:HTIM 500 μs
Sets transient high level time to 500 μs
TRAN:RTIM 200 μs
Sets the time for transient rising edge to 200 μs
TRAN:FTIM 200 μs
Sets the time for transient falling edge to 200 μs
TRAN:MODE CONT
Selects continuous operation
INPUT ON
Turns on the power input
Figure 2.6 shows the current waveform of the load: the load’s input current reaches the transient high level (10A) after 200 μs duration
of rising edge, and remains at 10A for 500 μs. Then after 200 μs duration of falling edge, the input current reaches the transient low
level (5A), and remains at 5A for 500 μs. Repeat it in cycles.
Figure 2.6
Continuous Transient Operation
2.4.2 Pulsed Transient Operation
The trigger function is required for pulsed transient operation. As long as no trigger occurs, the load remains at the transient low level.
After a trigger has been received, the load switches to high level and remains at this level for a programmed time span, subsequently,
the load returns to low level again. The associated parameters such as
– low level (LevelL),
– high level (LevelH),
– high level time (TimeH),
– time for rising edge (TimeR),
– time for falling edge (TimeF) and
– pulsed transient mode (pulse)
can be set through transient operation menu or via remote command
– (CURRent:LLEVel <NRf+>,
– CURRent:HLEVel <NRf+>,
– VOLTage:LLEVel <NRf+>,
– VOLTage:HLEVel <NRf+>,
– RESistance:LLEVel <NRf+>,
– RESistance:HLEVel <NRf+>,
– TRANsient:HTIMe <NRf+>,
– TRANsient:RTIMe <NRf+>,
– TRANsient:FTIMe <NRf+>,
– TRANsient:MODE PULSe).
Low level time (TimeL) has no influence on pulsed transient mode.
In order to get a pulse, an explicit trigger is required. The trigger can be an external trigger signal received via the TRIG input on the
front panel, pressing the
key and
key, via GPIB function GET, or via the common command *TRG or the subsystem command TRIG.
The trigger becomes effective only when the load remains at transient low level. Each trigger leads to one pulse. In the duration of rising
edge, transient high level, and falling edge, any trigger will be ignored.
Example: assume that the CCH range is active, and the input is in OFF status, then the transient parameters should be set as follows:
Press
key, to enter into transient operation.
Press
key, to open transient operation menu.
18
GMC-I Messtechnik GmbH
Set the following parameters in transient operation menu:
LevelL
5.000A
LevelH
10.000A
TimeH
0.50ms
TimeR
0.10ms
TimeF
0.10ms
Mode
Puls
Then press the
key to turn on the input.
Or via remote command to set:
SCPI Command
Description
TRIG:SOUR EXT
Selects the external trigger input
TRAN ON
Enables transient operation
TRAN:LLEV 5
Sets transient current low level to 5 A
TRAN:HLEV 10
Sets transient current high level to 10 A
TRAN:HTIM 500us
Sets transient high level time to 500 μs
TRAN:RTIM 100us
Sets the time for transient rising edge to 100 μs
TRAN:FTIM 200us
Sets the time for transient falling edge to 200 μs
TRAN:MODE PULS
Sets pulse trigger operating mode
INPUT ON
Turns on the input
Get the trigger by receiving an external trigger signal. Figure 2.7 shows the current waveform of the load before it is triggered and after
it has been triggered respectively: the electronic load starts its operation at the transient low level (5A) when the input is turned on. For
each trigger, the load current reaches the high level (10A) after 200 μs duration of rising edge, and remains at 10A for 500 μs. Then
after 200 μs duration of falling edge, the current returns to the transient low level (5A).
Figure 2.7
Pulsed transient operation
GMC-I Messtechnik GmbH
19
2.4.3 Toggled Transient Mode
The trigger function is required for toggled transient operation. As long as no trigger occurs, the load remains at transient low level.
After a trigger has been received, a toggle operation will be executed, and high transient level will be reached after the duration of rising
edge. The load will keep this level until a new trigger is received. Once this happens, the load will return to transient low level after the
duration of falling edge. The load will switch between the levels each time a trigger is received.
The associated parameters such as
– low level (LevelL),
– high level (LevelH),
– time for rising edge (TimeR),
– time for falling edget (TimeF) and
– toggled transient mode (toggle)
can be set through transient operation menu or via remote command
– (CURRent:LLEVel <NRf+>,
– CURRent:HLEVel <NRf+>,
– VOLTage:LLEVel <NRf+>, VOLTage:HLEVel <NRf+>,
– RESistance:LLEVel <NRf+>,
– RESistance:HLEVel <NRf+>,
– TRANsient:RTIMe <NRf+>,
– TRANsient:FTIMe <NRf+>,
– TRANsient:MODE TOGGle).
Low level time (TimeL) and high level time (TimeH) have no influence on toggled transient mode.
The trigger can be an external trigger signal received via the TRIG input on the front panel, pressing the
key and
key,
or via the GPIB GET function, the common command *TRG or the subsystem command TRIG.
For example: assume that the CCH range is active, and the input is in OFF status, then the transient parameters should be set as follows:
Press the
key to enter into transient operation.
Press the
key to open transient operation menu.
Set the following parameters in transient operation menu:
LevelL
5.000 A
LevelH
10.000 A
TimeR
0.10 ms
TimeF
0.20 ms
Mode
Togg
Then press the
key to turn on the input.
Alternatively, set the parameters via remote command:
SCPI Command
Description
TRIG:SOUR EXT
Selects the external trigger input
TRAN ON
Enables transient operation
TRAN:LLEV 5
Sets transient current low level to 5A
TRAN:HLEV 10
Sets transient current high level to 10A
TRAN:RTIM 100us
Sets the time for transient rising edge to 100 μs
TRAN:FTIM 200us
Sets the time for transient falling edge to 200 μs
TRAN:MODE TOGG
Selects toggled operating mode
INPUT ON
Turns on the input
Get the trigger by receiving an external trigger signal. Figure 2.8 shows the current waveform of the load before it is triggered and after
it has been triggered respectively: the electronic load starts its operation at the transient low level (5A) when the input is turned on. For
the first trigger, the load current reaches and remains at the high level (10A) after 100 μs duration of rising edge. When the second trigger is received, the load current will reach and remain at the low level (5A) after 200 μs duration of falling edge. Each trigger leads to
one toggle operation.
20
GMC-I Messtechnik GmbH
Figure 2.8
2.5
Toggled Transient Operation
List Operation
Besides Transient operation, the electronic load provides more flexible list operation, which can make the load operate according to the
preset sequence.
The list operation allows you to program a series of sequence steps, and the operation mode, the load values, the duration time for
each step can be set. The sequence operation can be executed in the CC, CV, and CR modes. The minimum duration for each step is
10us, and the maximum one is 99999.99999 s (around 27.78 hours). The list operation allows to be executed cyclically, and the cycle
times can be set; the different lists can be chained so that when one list has been executed, the other chained list will be enabled,
which further perfects the capability of the load to implement more complicated test tasks. Each list can contain 50 steps at most, and
the load can store 7 lists.
The associated parameters of a list operation can be edited and set through the list operation menu or via remote command. The load
provides convenient list editing functions. When the user is operating input/edit sequence step, it is easy to check the previous and
subsequent steps, and it is allowed to edit, insert, and delete immediately, which simplifies the list input operation effectively.
The set value of each step will be automatically saved when exiting from step edit menu, and the other list parameters will be saved
immediately after been edited.
The list operation also can be implemented via the remote command.
Please make sure the transient operation has been disabled before enabling list operation. In list operation, if the operation mode for
next step is different from the present step, the load will automatically have a 5 ms-delay after the present step is over to avoid the
probable current surge. The load’s input will be turned off during this 5 ms-delay.
Figure 2.9 is a list running diagram for 5 steps. See section 5 for detailed information about programming lists from the front panel.
Figure 2.9
!
List Operation
Attention!
In list operation, the Von point and current limit level should be taken into consideration, which may cause the shut down of
the input, thus interrupting the list operation.
GMC-I Messtechnik GmbH
21
2.6
Battery Discharge Operation
The electronic load adopts constant current discharge to test the battery capacity. The discharge current and cut-off voltage can be selfdefined. When the battery voltage decreases to the cut-off voltage, the battery discharge test will stop automatically. The test procedure is shown in Figure 2.10. The load can real-time display battery voltage, discharge current, discharge time, and discharge capacity
during the test. The maximum battery discharge time is 99 hours, 99 minutes, 99 seconds, with a maximum battery capacity of
4000 Ah (SPL 400-40), 3000 Ah (SPL 350-30, SPL 250-30), 2000 Ah (SPL 200-20).
V
Battery Voltage
Cut-off Voltage
t
I
Discharge Current
t
Figure 2.10 Voltage/Current Curve Chart in Battery Discharge Operation
2.7
Short Circuit Operation
The electronic load can simulate a short circuit to test the protection performance of the tested device. The short circuit operation can
be enabled and disabled by setting in the main menu, or via the remote command (INPut:SHORt ON/OFF). The other set values will not
be changed when the short circuit operation is enabled. The short-circuit value depends on the present operating mode of the load,
and the short-circuit value for each model is shown as follows:
Example for SPL 400-40
CCL, Short Circuit Current
4.4 A
CCH, Short Circuit Current
44 A
CV, Short Circuit Voltage
0V
CRL, Short Circuit Resistance 1.8 Ω.
CRH, Short Circuit Resistance 18 Ω.
CPV, Short Circuit Power
420 W
CPC, Short Circuit Power
0W
The parameters for the other models are listed in the datasheet on the attached CD ROM
or on the Internet at www.gossenmetrawatt.com.
The other setting values remain unchanged for short circuit operation.
!
22
Attention!
In short circuit operation, the Von point and current limit level should be taken into consideration, which may cause the shut
down of the input, thus interrupt the short circuit operation.
GMC-I Messtechnik GmbH
2.8
Triggered Operation
The triggered operation is mainly used to make the load keep synchronized with other test equipments or events. SPL Series electronic
load provides various triggering modes, which can be applied to the following occasions:
• Triggering a preset level
Transfer all pending preset levels to the immediate levels. For the presently active mode, the new level will appear at the input at once if
the input is turned on. For the modes which are not presently active, the preset levels will not take effect at the input until the corresponding mode becomes active.
• Triggering a transient pulse
Generate a transient pulse in accordance with the preset transient parameters, when pulsed transient operation is active.
• Triggering a transient toggle
Switch the input between the transient low level and transient high level in accordance with the preset transient parameters, when the
toggled transient operation is active.
• Triggering a list test
Enable the present list test when the list operation is active.
Three triggering methods are available for remote control: GPIB <GET> signal, the *TRG and TRIGger commands.
The external trigger input terminal and
key +
key on the front panel of the load can be used to trigger as well.
The load has three triggering modes: BUS, EXTernal and HOLD.
•
The BUS mode: the trigger source is GPIB <GET> signal, or *TRG command.
•
The EXTernal mode:
Choose the External trigger input terminal or
key +
key on the front panel as the trigger source.
The input signal at the External trigger input terminal is TTL, the falling edge (signal) is triggered.
The HOLD mode: Use TRIGger:IMMediate command as the trigger source. At this time, all other triggering methods including *TRG
become invalid.
Note
The TRIGger:IMMediate command can be used in all three triggering modes. The triggering modes can be selected via the
remote command only (TRIGger:SOURce BUS; TRIGger:SOURce EXTernal; TRIGger:SOURce HOLD).
GMC-I Messtechnik GmbH
23
2.9
Input Control
2.9.1 Turning On/Off the Load
The input can be turned on/off by pressing the
key, or via the remote command (INPUT ON/OFF). If the load’s input stays in OFF
status, press the
key to turn on the input; if the load’s input stays in ON status, press key to turn off the input.
Turning the input on/off (zero current) does not affect the programmed settings. In local control, if the input is turned on, the load status
can not be switched directly among the basic modes, transient operation, list operation, battery discharge operation, etc. The load can
be switched from one operation status to another operation status only when the input is turned off.
2.9.2 Von Point / Von Latch
When the external input voltage is less than the Von Point, the load will not be enabled even though the input has been turned on.
The load will be enabled till the external input voltage reaches or exceeds the Von Point. Von Latch is used to latch the active status of
the load. If the Von Latch function is enabled, once the input voltage reaches Von Point, the input will be turned on, and stay in ON status regardless of the changes from the external input voltage, even though the input voltage is less than the Von point. Please see Figure 2.11.
if the Von Latch function is disabled, once the input voltage reaches Von Point, the input will be turned on automatically, and once the
input voltage is less than the Von Point, the input will be automatically turned off. Please see Figure 2.12.
The automatic turning on /off of the input can be implemented via setting the Von Point and Von Latch, which simplifies test operation
greatly.
The Von voltage can be set in main menu, or via the remote command (INPut:LATCh:VOLTage <NRf+>).
The Von Latch can be set in main menu, or via the remote command (INPut:LATCh ON | OFF).
Figure 2.11 Von Latch is enabled
Figure 2.12 Von Latch is disabled
Note
If the load is unable to operate normally, please check the setting of Von Point.
24
GMC-I Messtechnik GmbH
2.9.3 Current Limit in CV Mode
The CV Current Limit is used to limit the maximum input current in CV mode. If the voltage is still larger than the setpoint while the current limit has been reached, the load will switch to the CC mode. Please see Figure 2.13.
The input will not be turned off in the CV current limit, which is different from the software current limit.
The CV Current Limit can be set in main menu, or via the remote command ( INPut:LIMit:CURRent <NRf+>).
Input Voltage
V
Ilimit
Vset
I
Input Current
Figure 2.13 CV Current Limit
2.9.4 Current Rise Rate
The Current Rise Rate is used to set the current rise rate in CC mode. It can be set in main menu, or via the remote command (CURRent:RISE:RATE <NRf+>). If the current rise rate is 0.1 A/μs, and the current setpoint is 20 A, then the current rise rate is shown as
below when the input is turned on, see Figure 2.14:
I (A)
20
10
100
t (μs)
200
Figure 2.14 Current Rise Rate
Note
The Current Rise Rate can be effective only in CCH and CCL, and the actual rise rate is one tenth of the setpoint in CCL.
2.9.5 Current Fall Rate
The Current Fall Rate is used to set the current fall rate in CC mode. It can be set in main menu, or via the remote command
(CURRent:FALL:RATE <NRf+>). If the current fall rate is 0.1 A/μs, and the current setpoint is 20 A, then the current rise rate is shown
as below when the input is turned off, see Figure 2.15:
I (A)
20
10
300
400
t (μs)
Figure 2.15 Current Fall Rate
Note
The Current Fall Rate can be effective only in CCH and CCL mode, and the actual rise rate is one tenth of the setpoint in CCL.
GMC-I Messtechnik GmbH
25
2.10
Measurement Function
The electronic load has measurement system with high resolution. The input current level and voltage level can be measured in real
time. The input power level and resistance level can be computed with the input voltage level and current level. Each measured value
can be checked through LCD display or via remote command (MEASure).
2.11
Saving and Recalling
The electronic load is provided with an EEPROM memory, which can save various parameters, such as modes, input status, current,
voltage, resistance, transient settings, limits, etc.
SPL Series electronic load can save 10 groups of parameters.
All parameters relevant to saving and recalling operation are listed in List 2-1.
key +
key and
key +
The 10 groups of parameters stored in Location 0~9 can be saved and recalled by pressing
key, or via the remote command (*SAV < NRl > and *RCL < NRl >).
The parameter saved in Location 0 will be recalled automatically every time the load is turned on.
List 2-1
Function
Effect
Default
using the
example of
SPL 400-40
Input
Input status
Off
Mode
Operation mode
CCH
Current level
Immediate current level
0A
Current rise rate
Current rise rate
4 A/μs
Current fall rate
Current fall rate
4 A/μs
Current Hlevel
Transient current high level
0A
Current Llevel
Transient current low level
0A
*Current protection level
Current limit
40 A
*Current protection delay
Current protection delay
60 s
*Current protection State
Enable/disable current protection
off
Voltage level
Immediate voltage level
80 V
CV current limit
Current limit in CV mode
40 A
Voltage Hlevel
Transient high voltage level
80 V
Voltage Llevel
Transient low voltage level
80 V
Resistance level
Immediate resistance level
2000 Ω
Resistance Hlevel
Transient high voltage level
2000 Ω
Resistance Llevel
Transient low voltage level
2000 Ω
Power level
Immediate power level
0W
Transient operation
Transient test
off
Transient mode
Transient mode
continuous
Transient Htime
Time for transient high level
0 ms
Transient Ltime
Time for transient low level
0 ms
Transient Rtime
Time for transient rising edge
0.01 ms
Transient Ftime
Time for transient falling edge
0.01 ms
Trigger Function
Trigger function selection
Tran
Trigger source *
Trigger source
external
Battery Mode
Battery discharge operation
off
Battery mini voltage
Battery minimum termination voltage
0V
Batterieentladestrom
Battery discharge current
0A
Voltage on
Von point for the load
0V
Voltage on Latch
Latch the Von point
Off
* indicates it only can be programmed in the remote control.
2.12
Reading Remote Programming Errors
The Err indicator will be turned on when remote programming errors occur. The error codes are shown as followings:
-lxx
Command errors
-2xx
Execution errors
-3xx
Device-specific errors
-4xx
Query errors
Remote programming errors can be checked by pressing
key after pressing
key on the front panel. The remote command
(SYSTem:ERRor?) can read back the error codes and error messages when it is in remote control.
26
GMC-I Messtechnik GmbH
All errors are saved in one error queue. The errors in this error queue are read in the order in which they occurred. At most 20 error
messages can be saved in the error queue. If the errors exceed 20, the last error in the error queue will be replaced with -350, “Too
many errors”. The load will not save any additional error message, unless you clear or read errors from the queue. Once the error message is read, it will be cleared in the error queue.
2.13
Status Report
The electronic load incorporates a status reporting register. Various status conditions of the load can be reported by querying the status register. The user can make sure which event has been reported through setting the enable register, which will be introduced in
detail in the SPL SCPI Programming Guide.
2.14
Protection Function
The electronic load is equipped with the following protection functions:
•
•
•
•
•
Overvoltage (OV)
Overcurrent (OC)
Overpower (OP)
Overtemperature (OT)
Reverse Voltage (RV)
Once any of the above protection function is active, the corresponding status bit in the status will be set; the input will be turned off
with beeps; the detected conditions will be displayed; the load will enter into the latched protection status, and will not respond to other
commands except some specific operations. For example: if an overtemperature condition has been detected, the input will be turned
off with beeps, and OT will be shown in the lower right corner of the display. The load will have no response to other operations.
2.14.1 Clearing Latched Protection
When the load enters into the latched protection status, it will have no response to other commands. The load will return to the normal
key or the remote command (INPut:PROTecoperation only when the latched protection has been reset via pressing
key +
tion:CLEar). The condition that causes the latched protection must be removed, or it will be latched again as soon as it is reset.
In addition, when the software overcurrent protection is enabled, if the overcurrent time does not exceed the specified protection time,
the load will display PT to indicate, but the input will not be turned off. At this time, you can reset the overcurrent time with
key +
key or the remote command (INPut:PROTection:CLEar).
2.14.2 Overvoltage
The overvoltage protection level is set at a predetermined voltage, which cannot be changed by the user. When the input voltage
exceeds this predetermined voltage, the overvoltage protection will be enabled, and the input is turned off with OV displayed, meanwhile, the OV and VF status register bits are set, and will remain set until they are reset and the overvoltage condition is removed.
2.14.3 Overcurrent
The electronic load allows the user to define a current protection limit. When the defined current limit is exceeded, the overcurrent timer
starts timing, and the display will show PT to indicate protection status, but the input will not be turned off immediately. When the specified delay time is reached, the overcurrent protection will be enabled and the input is turned off with OC displayed, meanwhile, the OC
and PS status register bits are set, and will remain set until they are reset and overcurrent condition is removed. The current protection
limit function can only be set via the remote command. The function is activated or deactivated via command (CURRent:PROTection:STATe ON/OFF). The setpoint value for overcurrent protection can be set via command (CURRent:PROTection < NRf+>). The
delay for turning the load input off can be set via command (CURRent:PROTection:DELay < NRf+>).
2.14.4 Overpower
The electronic load includes both hardware and software overpower protection functions.
Once the input power exceeds the maximum rated power, the hardware power-limit circuit will be enabled without delay to limit the
input power within the allowed range, in the meantime, the load will compute the present input power.
No matter whether the hardware power-limit circuit is enabled or not, the software overpower protection will become active as long as
the overpower time exceeds the specified limit. When the overpower protection is enabled, the input will be turned off with OP displayed, meanwhile, the OP and PS status register bits are set, and will remain set until they are reset and overpower condition is
removed.
2.14.5 Overtemperature
If the internal temperature of the load exceeds safe limits, the overtemperature protection will be enabled; the input will be turned off
with OT displayed, in the meantime, the OT and PS status register bits are set, and will remain set until they are reset and overtemperature condition is removed. You must wait until the load cools down to the normal temperature before you can reset the latched protection. The fans in the load will help to cool the load as quickly as possible.
2.14.6 Reverse Voltage
When reverse voltage is applied, the reverse voltage protection will be enabled; the input will be turned off with RV displayed, in the
meantime, the RV and VF status register bits are set, and will remain set until they are reset and reverse voltage is removed.
GMC-I Messtechnik GmbH
27
2.15
Auxiliary Functions
2.15.1 Trigger Function Selection
The Trigger Function in main menu is used to select the trigger object. Selecting “Tran” is used to trigger transient operation, and
selecting List is used to trigger sequence (list) operation.
2.15.2 Knob Function
The Knob in main menu is used to enable/disable the knob function. Select On to enable the knob function, and select Off to disable.
2.15.3 Key Sound
The Key Sound in main menu is used to control the key sound. Select On to activate the key sound and select Off to forbid.
3
Installation
3.1
Initial Check
When you receive the load, please check it for any obvious damage that may have occurred during shipment. Keep the original packing materials in case the load has to be returned to GMC-I Service GmbH in the future.
Please confirm that there are no broken keys or knobs, that the cabinet and panel surfaces are free of dents or scratches, and that the
display is not scratched or cracked.
3.2
Environment/Installation Location
The load can operate at its full power within the temperature range of 0 °C to 40 °C, and at derated power from 40 °C to 55 °C, or the
overtemperature protection will be caused.
Place the load in a location with good ventilation, and keep a distance from electromagnetic interference. Do not place the load in the
flammable atmosphere.
Your load must be installed in a location that allows sufficient space at the sides and rear of the load for adequate air circulation. The
fans cool the load by drawing in air through the sides and exhausting it out from the back. The rubber bumpers must be removed for
rack mounting.
3.3
Power-On/ Self-Test
A power-on self-test can inspect the basic operations of the load to assure you that the load is operational. First, before the load is
switched on, check AC power-line voltage to verify the power-line voltage selected by 115 V/230 V Toggle Key on the rear panel is in
accordance with the proper voltage in your local place.
Connect the power-line cord and a power-on self-test occurs automatically when you turn on the load. If the load detects an error
during power-on self-test, the error messages will be displayed as shown below:
Error Code
Error Message
601
LCD self-test error
603
System ADC test failed
607
Rundown too noisy
608
Keypad self-test error
609
EEPROM checksum failed
630
Temperature test failed
If no error is detected, the LCD will show CCH, the initial display, and the input will be turned off. If the parameters have been modified
previously and saved in location 0, the load will recall these modified parameters automatically. After around 20 minutes’ warm-up of
the load, the following test can be executed.
Connect the output of a power supply to the load’s input with correct polarity to execute CCH 5 A and CV 5 V operations. If the load
works normally, it will draw 5 A or set input voltage to 5 V within the allowed tolerance.
28
GMC-I Messtechnik GmbH
3.4
Connections on the Rear Panel
The rear panel of the electronic load is shown as Figure 3.1, which mainly includes AC input part and communication interface part.
The AC input part includes AC input socket, Fuse holder, and Line voltage switch; the interface part includes RS-232 interface and the
interface for optional GPIB or USB.
GPIB or USB interface
AC input socket
Line voltage selector switch
115 V / 230 V
Fuse holder
RS232 interface
Figure 3.1
Connections on the Rear Panel
AC input
AC power-line cord must be appropriate for your local standard.
Fuse: 250 V, 315 mA
Line voltage switch can select 110V or 220V.
The selected voltage should be in accordance with the proper voltage in your local place.
Commuication Interfaces
RS-232
The load provides a RS-232 interface, which is a standard DB9 pin connector using DTR and DSR to execute flow control.
The pin assignment is shown below:
Pinbelegung
Pin
Input/Output
1
—
Description
not used
2
Input
RXD Receive data
3
Output
TXD Transmit data
4
Output
DTR Data terminal ready
5
Common
GND Ground
6
Input
DSR Data set ready
7
—
not used
8
—
not used
9
—
not used
The interface parameters can be set in the MENU, and you can use SCPI language for programming to realize the communication with
the load.
GPIB Interface
The load provides a GPIB interface, and you can set its address to any value between 0 and 30 in MENU. When multiple GPIB devices
are connected, each device on the GPIB interface must have a unique address that is not be used by the devices on other interfaces.
The address is set to “05” when the load is shipped from the factory.
USB Interface
The load provides a USB interface. You need to install the software provided by the factory in PC to realize communication with the
load.
USB and GPIB interfaces occupy the same expansion slot on the rear panel, so only one type interface can be chosen to install at the
same time, meanwhile, only one type interface can be used by the load to communicate with external devices.
GMC-I Messtechnik GmbH
29
3.5
Connections on the Front Panel
The terminals of the electronic load on the front panel include input terminals (INPUT+, INPUT-), remote sense terminals (SENSE +,
SENSE -), and an external trigger input terminal. See Figure 3.2.
Figure 3.2
Connections on the Front Panel
Input Connections
Input connections are made to two binding posts (INPUT+, INPUT-) on the front panel. The maximum wire diameter is 6mm. In order
to enhance the test accuracy, and reduce the test error when executing large current test, it would be better to use thicker wire.
Remote Sense Terminals
Remote sensing is made to two terminals (SENSE+, and SENSE-). It compensates for the voltage drop caused by the power supply
and input wire resistance to achieve greater accuracy.
The electronic load can detect remote voltage inputs automatically, so there is no need to modify the parameter settings or change the
hardware wiring when using remote sensing.
External Trigger Input Terminal
The external trigger input terminal on the front panel is a BNC connector, in which the middle part is the input+, and the outer casing is
the input-. It receives 5 V TTL-compatible falling-edge trigger signals.
3.6
Wiring
Sense Connections
As the influence of connected power and the conductor resistance of the load, the voltage at the input terminals will be lower than output voltage when the current flows across the load, When greater accuracy of voltage test is needed, it is necessary to connect Sense
input, and the load will switch to Sense status automatically. The relevant wiring is shown as Figure 3.3.
Power supply to be tested
Figure 3.3
Measuring terminals
Parallel Connections
Figure 3.4 illustrates how two or more loads can be paralleled in CC /CR mode when high power or large current is needed.
Power supply to be tested
Figure 3.4
30
Parallel Connection
GMC-I Messtechnik GmbH
4
Local Operation
The local operation of the load has been briefly introduced in Chapter 2 „Functions and Features“. In this chapter, it will be explained in
details with examples.
4.1
Local Control
If it is needed to control the load from the front panel, the load must stay in the local control status. The load enters into local control
status once it is powered on, and preset parameters saved in EEPROM location 0 will be recalled automatically.
Under remote control status, all operations on front panel keypad and knobs become invalid (except
key +
key). When the
load receives a remote command (SYST:REM) via RS232 or GPIB, the remote control goes into effect and REM indicator is turned on.
Under remote control status, all operations on electronic load are controlled by remote controller. The electronic load will return to local
control after receiving the return command (SYST:LOCal).
Or you can return the electronic load to local control by pressing
4.2
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
key +
key.
Main Operation on the Front Panel
Connecting to the power supply
Turning the Input On/Off
CC mode
CV mode
CR mode
CP mode
Short circuit operation
Continuous transient operation
Pulsed transient operation
Toggled transient operation
List operation
Battery discharge operation
Saving and recalling parameters
Clear protection settings
Error messages
Triggered operation
Main menu
4.3
Connecting to the Power Supply
Connect the positive pole of the power supply to the INPUT + terminal, and connect the negative pole of the power supply to the
INPUT - terminal. If the input is connected reversely, the RV protection status of the load will become effective. In this case, disconnect
the power supply from the load and then make the correct connections. After the power supply is correctly connected to the load,
press
key +
key to clear the RV protection status or restart the load. The relevant details will be described in “Clearing Protection Settings”.
4.4
Turning the Input On/Off
Press
4.5
key to turn on or turn off the input.
Basic Operation
The operating procedures for basic tests are shown below:
1
Press
key to enter into mode selection and parameter setting menu.
2
Use ▲ and ▼ keys to select one operating mode.
3
Use Entry keys, or use the knob together with ◄ ► keys to input set value.
present, or exit mode selection and parameter setting menu.
4
Press the Enter key to confirm and exit mode selection and parameter setting menu.
5
Press the
key may be used to clear the values entered at
key to turn on the load’s input.
GMC-I Messtechnik GmbH
31
4.5.1 CC Mode
Constant current mode has two ranges, the high range (CCH) and the low range (CCL).
Example 1: In CV mode, set the load to CCH, the current to 5.12 A and turn on the load.
The operating procedures are shown below:
Procedure
Operation Description
Display
1
Press the
MODE :
VOLT :
CV
80.000V
2
Use ▲ or ▼ key to select CCH mode.
MODE :
CURR :
CCH
0.000A
3
Use Entry keys, or use the knob together with the ◄ ► cursor keys to input the current value to 5.12.
MODE :
CURR :
CCH
5.120A
4
Press the Enter key to confirm and exit mode selection and parameter setting menu.
0.000V
5.120A
0.000A
CCH OFF
5
Press the
0.000V
5.120A
0.000A
CCH ON
6
Use the ▲ and ▼ key to check the power value
key to enter into the mode selection and parameter setting menu (e.g: the load is in CV mode).
key to turn on the load.
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CCH
Sets the mode
CURR
5,12
Sets the current value
INPUT
ON
Turns on the load
Example 2: Current setting is 5.8A in CCH.
Switch on the load. The current setpoint can be set in two ways:
Option 1:
Procedure
Operation Description
Display
1
Press the
MODE :
CURR :
CCH
5.120A
2
Use Entry keys, or use the knob together with the ◄ ► keys to input the current value to 5.8.
MODE :
CURR :
CCH
5.800A
3
Press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
5.800A
0.000A
CCH OFF
4
Press the
0.000V
5.800A
0.000A
CCH ON
key to enter into the mode selection and parameter setting menu.
key to turn on the load.
Option2:
Procedure
Operation Description
Display
1
Move the ◄ cursor to the hundredths with key.
0.000V
5.120A
0.000A
CCH OFF
2
Rotate the knob to set the hundredths to 0.
(Rotating the knob will change the set value immediately. And when the load is powered on, the new set value will become
valid at the input terminal at once.)
0.000V
5.100A
0.000A
CCH OFF
3
Move the cursor to the tenths with the ◄ key.
0.000V
5.100A
0.000A
CCH OFF
4
Rotate the knob to set the tenths to 8.
(Rotating the knob will change the set value immediately. And when the load is powered on, the new sett value will become
valid in the input terminal at once.)
0.000V
5.800A
0.000A
CCH OFF
5
Press the
0.000V
5.800A
0.000A
CCH ON
key to turn on the load.
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CCH
Sets the mode
CURR
5,8
Sets the current value
INPUT
ON
Turns on the load
Note
In CCH status or CCL status, CCH /CCL will be shown respectively in the lower right corner of the display.
32
GMC-I Messtechnik GmbH
4.5.2 CV Mode
Example 1: Set the load to CV mode and the voltage value to 50 V in CCH.
Then turn on the load, and check the present power value. The operating procedures are shown below:
Procedure
Operation Description
Display
1
Press the
MODE :
CURR :
CCH
3.800A
2
Use the ▼ key to select CV mode.
MODE :
VOLT :
CV
80.000V
3
Use Entry keys or use the knob together with the ◄ ► cursor keys to input the voltage value to 50.
MODE :
VOLT :
CV
50.000V
4
Press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
50.000V
0.000A
CV OFF
5
Press the
0.000V
50.000V
0.000A
CV ON
6
Check the present power value with the ▲ and ▼ keys.
0.000V
50.000V
0.000A
0.000W
key to enter into the mode selection and parameter setting menu.
key to turn on the load.
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CV
VOLT
50
Sets the mode
Sets the voltage value
INPUT
ON
Turns on the load
Example 2: Set the voltage value to 60 V in CV mode.
Turn on the load, and there are two ways to set the voltage value.
Option 1:
Procedure
Operation Description
Display
1
Press the
MODE :
VOLT :
CV
50.000V
2
Use Entry keys or the knob together with the ◄ ► keys to input the voltage setpoint value to 60.
MODE :
VOLT :
CV
60.000V
3
Press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
60.000V
0.000A
CV OFF
4
Press the
0.000V
60.000V
0.000A
CV ON
key to enter into the mode selection and parameter setting menu.
key to turn on the load.
Option 2:
Procedure
Operation Description
Display
1
Move the cursor to the tens with key ◄.
0.000V
50.000V
0.000A
CV ON
2
Rotate the knob to set the tens to 6.
0.000V
(Rotating the knob will change the set value immediately. The set value will become effective as soon as the power input is active.) 60.000V
0.000A
CV OFF
3
Press the
0.000V
60.000V
0.000A
CV ON
key to turn on the load.
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CV
VOLT
60
Sets the mode
Sets the voltage value
INPUT
ON
Turns on the load
Note
CV will be shown in the lower right corner of the display when the load is in CV mode.
GMC-I Messtechnik GmbH
33
4.5.3 CR Mode
CR Mode includes constant resistance low range (CRL), constant resistance medium range (CRM), and constant resistance high range
(CRH).
Example 1: Set the load to CRL and set the resistance value to 1.5 Ω in CV mode.
Turn on the load, and check the present power value. The operating procedures are shown below:
Procedure
Operation Description
Display
1
Press
MODE :
VOLT :
CV
50.000V
2
Use ▼ key to select CRL.
MODE :
RES :
CRL
0.0200Ω
3
Use Entry keys or the knob together with ◄ ► keys to input the resistance value to 1.5.
MODE :
RES :
CRL
1.5000Ω
4
Press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
1.5000Ω
0.000A
CRL OFF
5
Press the
0.000V
1.5000Ω
0.000A
CRL ON
6
Check the present power value with ▲ and ▼.
0.000V
1.5000Ω
0.000A
0.000W
key to enter into the mode selection and parameter setting menu.
key to turn on the load.
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CRL
Sets the mode
RES
1,5
Sets the resistance value
INPUT
ON
Turns on the load
Example 2: Set the resistance value to 1.8 Ω in CRL.
Turn on the load, and there are two ways to set the resistance value.
Option 1:
Procedure
Operation Description
Display
1
Press the
MODE :
RES :
CRL
1.5000Ω
2
Use Entry keys or the knob together with the ◄ ► keys to input the resistance value to 1.8.
MODE :
RES :
CRL
1.8000Ω
3
Press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
1.8000Ω
0.000A
CRL OFF
4
Press the
0.000V
1.8000Ω
0.000A
CRL ON
key to enter into the mode selection and parameter setting menu.
key to turn on the load.
Option 2:
Procedure
Operation Description
Display
1
Move the cursor to the tenths with key ◄.
0.000V
1.5000Ω
0.000A
CRL OFF
2
Rotate the knob to set the tenths to 8.
(Rotating the knob will change the set value immediately. The set value will become effective at input at once when the load is
turned on.)
0.000V
1.8000Ω
0.000A
CRL OFF
3
Press the
0.000V
1.8000Ω
0.000A
CRL ON
key to turn on the load.
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CRL
Sets the mode
RES
1,8
Sets the resistance value
INPUT
ON
Turns on the load
Note
CRH /CRM/CRL will be shown respectively in the lower right corner of the display when the load is in CRH status, CRM status
or CCL status.
34
GMC-I Messtechnik GmbH
4.5.4 CP Mode
CP Mode includes constant power-current source mode (CPC) and constant power-voltage source mode (CPV).
Example 1: Set the load to CPV and set the power value to 100 W.
Turn on the load, and check the present power value. The operating procedures are shown below:
Procedure
Operation Description
Display
1
Press the
MODE :
RES :
CRL
1.8000Ω
2
Use the ▼ key to select CPV.
MODE :
POWR :
CPV
0.000W
3
Use Entry keys or the knob together with ◄ ► keys to input the power value to 100.
MODE :
POWR :
CPV
100.00W
4
Press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
100.00W
0.000A
CPV OFF
5
Press the
0.000V
100.00W
0.000A
CPV ON
6
Check the present power value with ▲ and ▼.
0.000V
100.00W
0.000A
0.000W
key to enter into the mode selection and parameter setting menu.
key to turn on the load.
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CPV
POW
100
Sets the mode
Sets the power value
INPUT
ON
Turns on the load
Example 2: Set the power value to 200 W in CPV mode.
Turn on the load, and there are two ways to set the power value.
Option 1:
Procedure
Operation Description
Display
1
Press
MODE :
POWR :
CPV
100.00W
2
Use Entry keys or the knob together with ◄ ► keys to input the power value to 200.
MODE :
POWR :
CPV
200.00W
3
Press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
200.00W
0.000A
CPV OFF
4
Press the
0.000V
200.00W
0.000A
CPV ON
key to enter into the mode selection and parameter setting menu.
key to turn on the load.
Option 2:
Procedure
Operation Description
Display
1
Move the cursor to the hundredths with key ◄.
0.000V
100.00W
0.000A
CPV OFF
2
Rotate the knob to set the hundredths to 2.
(Rotating the knob will change the set value immediately. The set value will become effective at input at once when the load is
turned on.)
0.000V
200.00W
0.000A
CPV OFF
3
Press the
0.000V
200.00W
0.000A
CPV ON
key to turn on the load.
For the above operating procedures, the corresponding SCPI commands should be:
MODE CPV
Sets the mode
POW 200
Sets the power value
INPUT ON
Turns on the load
Note
CPV /CPC will be shown respectively in the lower right corner of the display when the load is in CPV or CPC mode
GMC-I Messtechnik GmbH
35
4.6
Short Circuit Operation
The operating procedures for short circuit operation are shown below:
Example 1: The load was in CV mode previously and it is turned off. Set the load to short circuit in CCH status. Turn on the load to execute short circuit operation.
Procedure
Description
Display
1
Press the
2
Use the ◄ key or knob to set On, and press the Enter key to confirm.
Short :
On *Off
3
Press the
0.000V
0.000V
0.000A
sCV OFF
4
Press the
key to enter into the mode selection and parameter setting menu; use ▲ and ▼ keys to select one basic
operating mode; press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
44.000A
0.000A
sCCH OFF
5
Press the
0.000V
44.000A
0.000A
sCCH ON
key to enter into main menu, and select Short (short circuit) item with the ▼ key.
key to exit the main menu. The display shows “s” to indicate in the basic test mode.
key to turn on the load.
Short :
On *Off
For the above operating procedures, the corresponding SCPI commands should be:
INPUT:SHORT
ON
Sets the load to short circuit operation
MODE
CCH
Sets the mode
INPUT
ON
Turns on the load
Example 2: Based on the last example, exit the short circuit operation, and turn off the load.
Procedure
Description
Display
1
Press the
Short :
On *Off
2
Use the ◄ key or knob to set Off, and press the Enter key to confirm.
Short :
On *Off
3
Press the
key to exit the main menu. On the display, “s” disappears in CCH status.
0.000V
0.000A
0.000A
CCH ON
4
Press the
key to turn off the load.
0.000V
0.000A
0.000A
CCH OFF
key to enter into main menu, and select Short (short circuit) item with the ▲ key.
For the above operating procedures, the corresponding SCPI commands should be:
INPUT:SHORT
INPUT
36
OFF
ON
Sets the load to exit the short circuit
Turns on the load
GMC-I Messtechnik GmbH
4.7
Transient Operation
The operating procedures for transient operation are shown below:
1
Press the
key to enter into the mode selection and parameter setting menu; use ▲ and ▼ keys to select one basic operating
mode; press the Enter key to confirm and exit the mode selection and parameter setting menu.
2
Press the
key to enter into transient operation. The display shows “t” to indicate in the basic test mode.
3
Press the
key to enter into the transient operation menu.
4
Use ▲ and ▼ keys to select the parameter: LevelL, LevelH, TimeL, TimeH, TimeR und TimeF
5
Use Entry keys or use the knob together with ◄ ► keys to set values for LevelL, LevelH, TimeL, TimeH, TimeR, and TimeF.
Use ◄ ► keys or knob to set Mode value: continuous, pulsed or toggled operation.
6
Press the
key to exit the transient operation menu.
7
Press the
key to turn on the load.
8
If it is the pulsed transient operation or the toggled transient operation, one trigger occurs when pressing
the signal at the trigger input terminal (TRIG IN) is low level.
key +
key or
4.7.1 Continuous Transient Operation
In continuous transient operation, the load switches at defined intervals between high and low level.
Relevant parameters:
– low-Pegel (LevelL),
– high-Pegel (LevelH),
– low-Pegel-Zeit (TimeL),
– high-Pegel-Zeit (TimeH),
– time for rising edge (TimeR) and
– time for falling edge (TimeF).
Example 1: Set the load voltage value to periodically switch between 1 V and 5 V; set the time for rising edge (TimeR) to 10 ms; set
high level time (TimeH) to 200 ms; set time for falling edge (TimeF) to 20 ms; set low level time (TimeL) to 400 ms, and the load is in
continuous transient operation. The operating procedures are shown as below:
Procedure
Description
Display
1
Press the
key to enter into the mode selection and parameter setting menu; use ▲ ▼ keys to select CV
mode;
press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
0.000V
0.000A
CV OFF
2
Press the Tran key to enter into transient operation. The display shows “t” to indicate in CV mode.
0.000V
80.000V
0.000A
tCV OFF
3
Press the
► LevelL:
LevelH:
80.000V
80.000V
4
Use Entry keys or use the knob together with ◄ ► keys to set LevelL to 1, and press the Enter key to confirm.
LevelL:
►LevelH:
1.000V
80.000V
5
Use Entry keys or use the knob together with ◄ ► keys to set LevelH to 5, and press the Enter key to confirm.
►TimeL :
TimeH :
530.00ms
500.00ms
6
Use Entry keys or use the knob together with ◄ ► keys to set TimeL to 400 ms, and press the Enter key to confirm.
TimeL :
►TimeH :
400.00ms
500.00ms
7
Use Entry keys or use the knob together with ◄ ► keys to set TimeH auf 200 ms, and press the Enter key to confirm. ►TimeR:
The menu will show the next item automatically.
TimeF:
100.00ms
100.00ms
8
Use Entry keys or use the knob together with ◄ ► keys to set TimeR auf 10 ms, and press the Enter key to confirm.
TimeR:
►TimeF:
10.00ms
100.00ms
9
Use Entry keys or use the knob together with ◄ ► keys to set TimeF auf 20 ms, and press the Enter key to confirm. ►Mode: ◄ Cont ►
10
Betätigen Sie die Taste ◄ ► bzw. den Drehgeber, um Cont zu setzen
und bestätigen Sie mit Enter.
►Mode: ◄ Cont ►
11
Use
0.000V
1.000V
0.000A
tCV OFF
0.000V
1.000V
0.000A
tCV ON
0.000V
5.000V
0.000A
tCV ON
12
Press the
GMC-I Messtechnik GmbH
key to enter into the transient operation menu.
keys or knob to set Mode value to Cont, and press key to confirm.
key to turn on the load.
37
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CV
Sets the mode
TRAN
ON
Enables the transient operation
VOLT:LOW
1
Sets a value to low level
VOLT:HIGH
5
Sets a value to high level
TRAN:LTIME 400 ms
Sets a value to low level time
TRAN:HTIME 200 ms
Sets a value to high level time
TRAN:RTIME
10 ms
Sets a value to time for rising edge
TRAN:FTIMR
20 ms
Sets a value to time for falling edge
TRAN:MODE
CONT
Selects continuous transient operation
INPUT
ON
Turns on the load
4.7.2 Pulsed Transient Operation
Example 1: Assume that the load is in external triggering mode, set the load current value to periodically switch between 1 A and 5 A;
set the time for rising edge (TimeR) to10 ms; set high level time (TimeH) to 200 ms; set time for falling edge (TimeF) to 10 ms; the load
is in pulsed transient operation, and a trigger occurs at this time.
Procedure
Description
Display
1
Press the
key to enter into the mode selection and parameter setting menu; use the ▲ ▼ keys to select CCH
mode; press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
0.000A
0.000A
CCH OFF
2
Press the Tran key to enter into transient operation. The display shows “t” to indicate in CCH status.
0.000V
0.500A
0.000A
tCCH
3
Press the
►LevelL:
LevelH:
0.500A
1.000A
4
Use Entry keys or use the knob together with ◄ ► keys to set LevelL to 1, and press the Enter key to confirm.
LevelL:
►LevelH:
1.000A
1.000A
5
Use Entry keys or use the knob together with ◄ ► keys to set LevelH to 5, and press the Enter key to confirm.
►TimeL:
400.00ms
400.00ms
6
Press the ▼ key to select TimeH; use Entry keys or use the knob together with ◄ ► keys to set TimeH to 200 ms, and
press the Enter key to confirm.
► TimeR:
TimeF:
10.00ms
20.00ms
7
Use Entry keys or use the knob together with ◄ ► keys to set TimeR to 10 ms, and press the Enter key to confirm.
TimeR:
►TimeF:
10.00ms
20.00ms
key to enter into the transient operation menu.
TimeH:
8
Use Entry keys or use the knob together with ◄ ► keys to set TimeF to 10 ms, and press the Enter key to confirm.
►Mode: ◄Cont ►
9
Use the ◄ ► keys or knob to set Mode value to pulse, and press the Enter key to confirm.
►Mode: ◄ Puls ►
10
Press the
0.000V
1.000A
0.000A
tCCH OFF
11
Press the
0.000V
1.000A
0.000A
tCCH ON
12
One trigger occurs when pressing
0.000V
5.000A
0.000A
tCCH ON
38
key to exit the transient operation menu.
key to turn on the load.
+
key or the signal at the trigger input terminal (TRIG IN) is low level.
GMC-I Messtechnik GmbH
For the above operating procedures, the corresponding SCPI commands should be:
MODE
TRAN
CURR:LOW
CURR:HIGH
TRAN:HTIME
TRAN:RTIME
TRAN:FTIME
TRAN:MODE
INPUT
.
.
Trig
CCH
ON
1
5
200ms
10us
10us
PULS
ON
Sets the mode
Enables the transient operation
Sets a value to low level
Sets a value to high level
Sets a value to high level time
Sets a value to time for rising edge
Sets a value to time for falling edge
Selects pulsed transient operation
Turns on the load
One trigger occurs
4.7.3 Toggled Transient Operation
Example 1: Assume that the load is in external triggering mode, set the load resistance value to periodically switch between 200 Ω and
500 Ω; set the time for rising edge (TimeR) to 10 ms; set time for falling edge (TimeF) to 10 ms; the load is in toggled transient operation, and a trigger occurs at this time.
Procedure
Description
Display
1
Press the
key to enter into the mode selection and parameter setting menu; use the ▲ ▼ keys to select CRH
mode; press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
20.000Ω
0.000A
CRH OFF
2
Press the Tran key to enter into transient operation. The display shows “t” to indicate in CRH status.
0.000V
2000.0Ω
0.000A
tCRH OFF
3
Press the
►LevelL:
2000.0Ω
2000.0Ω
4
Use Entry keys or use the knob together with ◄ ► keys to set LevelL to 200, and press the Enter key to confirm.
5
Use the Entry keys or the knob together with ◄ ► keys to set LevelH to 500, and press Enter key to confirm.
6
key to enter into the transient operation menu.
LevelH:
LevelL:
►LevelH:
►TimeL:
200.00Ω
2000.0Ω
TimeH:
400.00ms
200.00ms
Press the ▼ key to select TimeR; Use the Entry keys or the knob together with ◄ ► keys to set TimeR to 10 ms, and
press the Enter key to confirm.
TimeR:
►TimeF:
10.00ms
10.00ms
7
Use the Entry keys or the knob together with ◄ ► keys to set TimeF to 10 ms, and press Enter key to confirm.
►Mode: ◄ Puls ►
8
Use ◄ ► keys or knob to set Mode value to Togg, and press the Enter key to confirm.
►Mode: ◄ Togg ►
9
Press the
0.000V
200.00Ω
0.000A
tCRH OFF
10
Press the
0.000V
200.00Ω
0.000A
tCRH
11
One trigger occurs when pressing
0.000V
500.00Ω
0.000A
tCRH ON
key to exit the transient operation menu.
key to turn on the load.
+
key or the signal at the trigger input terminal (TRIG IN) is low level.
For the above operating procedures, the corresponding SCPI commands should be:
MODE
TRAN
RES:LLEV
RES:HLEV
TRAN:RTIME
TRAN:FTIME
TRAN:MODE
INPUT
.
.
Trig
CRH
ON
200
500
10us
10us
TOGG
ON
GMC-I Messtechnik GmbH
Sets the mode
Enables the transient operation
Sets a value to low level
Sets a value to high level
Sets a value to time for rising edge
Sets a value to time for falling edge
Selects toggled operation
Turns on the load
One trigger occurs
39
4.8
Sequence Operation (List)
The operating procedures for enabling/disabling sequence (list) operation are shown below:
key +
the key to enter into sequence (list) operation menu.
1
Press the
2
Use Entry keys or the knob to select list number (No.), and press the Enter key to confirm.
3
Use the
4
Use the
and
keys to activate the sequence (list) operation.
5
Use the
and
keys to stop the sequence (list) operation.
key to quit the sequence operation menu.
The operating procedures for setting the sequence (list) parameters are shown below:
key + the
key to enter into sequence (list) operation menu.
1
Press the
2
Use the Entry keys or the knob to select list number (No.), and press the Enter key to confirm.
3
Use the ▼ key to select list memo (Memo).
4
Use knob and the ◄ ► keys to edit memo (max. 10 characters).
5
Use the ▼ key to select sequence data (Data:<New/Edit>).
6
Use ◄ ► keys or knob to select New or Edit operation, and press the Enter key to confirm.
7
Use ◄ ► to select parameters.
8
Use Entry keys or use the knob together with ◄ ► keys to input set value; or use the knob/ key to select one operating mode, and
press the Enter key to confirm. After setting the third parameter, press the Enter key to confirm and enter into the next step.
9
If it is needed to modify one step, use ▲ and ▼ keys to select this step. The setting operations for this step are the same as
decribed under item 8.
10 If it is needed to add one step to the last step, use the ▼ key to select the new step. The setting operations for this new step are the
same as decribed under item 9.
11 If it is needed to insert one step above an edited step, use ▲ and ▼ keys to select this edited step. The LCD display doesn‘t flash
at this time, and press
key +
key to insert a new step.
The setting operations for this new step are the same as described under item 8.
12 If it is needed to delete an edited step, use the ▲ and ▼ keys to select this step. The LCD display will stop flashing, and press the
key +
key to delete. If there is only one step exists, it will exit the step edit screen.
13 Press the
key to exit step edit screen, and save the sequence data in EEPROM assigned by the sequence number.
14 Use the ▼ key to select the cycle times (Count); use Entry keys or the knob together with ◄ ► keys to input set value. Press the
Enter key to confirm and save the cycle times (Count) in EEPROM assigned by the sequence number.
15 Use the ▼ key to select “Chain”; use Entry keys (the “Chain” is OFF when the Entry key exceeds 6) or the knob to input the set
value. Press the Enter key to confirm.
16 Press the
key to exit sequence operation menu.
17 Press the
key +
key to activate sequence operation.
18 Press the
key +
key to stop sequence operation.
40
GMC-I Messtechnik GmbH
4.8.1 Sequence (List) editing
Example 1: Edit a new sequence. The sequence number is 0; the sequence Memo is Test Power; the sequence steps: step 1: CCL, 1 A,
1 S; step 2: CCH, 2 A, 1S; step 3: CV, 1 V, 1 S; step 4: CRL, 1 Ω,1 S; step 5: CRH, 200 Ω,1 S.
The cycle times (Count) for sequence operation is 5; disabling the sequence chain; starting sequence operation; stopping sequence
operation.
Procedure
Description
Display
1
Press the
2
Use Entry keys or the knob to set the sequence number (No.) to 0, and press the Enter key to confirm.
(Recall the sequence in EEPROM assigned by the sequence number).
►No.:
3
Use the ▼ key to select sequence memo (Memo).
►No.:
4
Rotate the knob to select the letter “T”.
5
Use the ► key to move the cursor to the right.
6
Rotate the knob to select the letter “e”.
►Memo:Te
7
Set Memo to “Test Power” according to step 5 and setp 6 operations. Press the Enter key to confirm.
►Memo: Test Power
8
Use the ▼ key to select Data:<New/Edit>.
►Data:<New/Edit>
Count:
1
9
Use the ◄ key or knob to select New, and press Enter key to confirm.
Clear Data: Yes *No
10
01.
Use the ◄ key or knob to select Yes, and press the Enter key to confirm. The data is cleared and step edit screen appears.
CC
0.00000s
0.000A
11
Edit the step 1: CCL, 1 A, 1 S. The time set value in the upper right corner of the display flashes. Use the Entry keys or the 01.
knob together with ◄ ► keys to input time to 1 s, and press the Enter key to confirm.
CCH
1.00000s
0.000A
12
The basic mode showed in lower left corner of the display flashes. Use the knob or
CCL, and press the Enter key to confirm.
1.00000s
0.000A
13
The set value in the lower right corner of the display flashes. Use Entry keys or the knob together with the ◄ ► keys to
input the current value to 1 A. Press the Enter key to confirm and enter into the next operation.
key +
►No.:
key to enter into sequence (list) operation menu.
0
Memo
0
Memo
0
Memo
►No.:
0
Memo T
►No.:
0
Memo: T
No.:
No.:
key to select operating mode to 01.
CCL
0
0
01.
CCL
1.00000s
1.0000A
14
Repeat the procedures 11 through 13 to set the rest four steps.
15
The five sequence steps have been edited, and there is no need to edit step 6. Press the Clear key to exit step edit screen 06.
CRH
and save the sequence data in EEPROM assigned by the sequence number.
0.00000s
20.000Ω
16
Use the ▼ key to select “Count”; use Entry keys or the knob together with the ◄ ► keys to input “5”. Press the Enter key Data:<New/Edit>
►Count:
5
to confirm and save the Count value in EEPROM assigned by the sequence number.
17
Use the ▼ key to select “Chain”; use the Entry keys (the “Chain” is OFF when the Entry key exceeds 6) or the knob to input
►Chain:Off
“Off”. Press the Enter key to confirm and save the Chain value in the EEPROM assigned by the sequence number.
18
Press the
19
Press the
key +
20
Press the
key +
0.000V
0.000A
0.000A
CCH OFF
key to activate sequence operation.
0.000V
1.000A
0.0000A
LCCL ON
key to deactivate sequence operation.
0.000V
0.000A
0.000A
CCH OFF
key to exit sequence operation menu.
For the above operating procedures, the corresponding SCPI commands should be:
LIST:RECALL
LIST:MEMO
LIST:DATA
LIST:DATA
LIST:DATA
LIST:DATA
LIST:DATA
LIST:COUNT
LIST:CHAIN
LIST
LIST
0
Test Power
CCL,1A,1S
CCH,2A,1S
CV,1V,1S
CRL,1Ω,1S
CRH,200Ω,1S
5
OFF
ON
OFF
GMC-I Messtechnik GmbH
Recalls the number 0 sequence
Sequence memo is “Test Power”
The above 5 commands are sequence steps
Cycle times for this sequence
Disables the chained sequence
Activates sequence operation
Stops sequence operation
41
4.8.2 Modifying, Adding, Inserting, Deleting Sequences
Exampel 1: Based on the example 1 in section 4.8.1, step 1 modifies the time to 2 s. Add “CCH, 5 A, 1S” to the last step. Insert “CRL ,
1 Ω,10 S” at step 3. Delete step 2. The sequence is chained to itself to realize the continuous execution.
Steps
Description
Display
0
Memo: Test Power
Step 1
Press the
Step 2
Use the ▼ key to select Data:<New/Edit>.
►Data:<New/Edit>
Count:
5
Step 3
Use the ► key or knob to select Edit, and press the Enter key to confirm and enter step edit screen.
01.
CCL
1.00000s
1.0000A
Step 4
Use the ► key to select time parameter, and the time set value flashes.
01.
CCL
1.00000s
1.0000A
Step 5
Use the Entry keys or the knob together with ◄ ► keys to input the time to 2 s, and press the Enter key to confirm.
01.
CCL
2.00000s
1.0000A
Step 6
Use the ▼ key to select the last new step (Step6).
06.
CRH
0.00000s
20.000Ω
Step 7
Add a new step: CCH, 5 A, 1 S. The set value in the upper right corner of the display flashes. Use Entry keys or the knob together
with ◄ ► keys to input time to 1 s, and press the Enter key to confirm.
06.
CRH
1.00000s
20.000Ω
Step 8
The basic mode showed in lower left corner of the display flashes. Use the knob or the
CCH, and press the Enter key to confirm.
06.
CCH
1.00000s
0.000A
06.
CCH
1.00000s
5.000A
07.
CCH
0.00000s
0.000A
Step 9
key +
►No.:
key to enter into sequence operation menu.
key to select operating mode to
The set value in the lower right corner of the display flashes. Use Entry keys or the knob together with the ◄ ► keys to input the
current value to 5 A. Press the Enter key to confirm and enter into the next operation.
Step 10
Use the ▲ key to select the step 3.
03.
CV
1.00000s
1.000V
Step 11
Press the
03.
CV
0.00000s
0.000V
Step 12
Insert a new step: CRL, 1 Ω, 10 S at step 3. The setting operations for this new step are the same as described under items 7 to 9.
03.
CRL
10.00000s
1.0000Ω
Step 13
Use the ▲ key to select the step 2.
02.
CCH
1.00000s
2.000A
Step 14
Press the
02.
CRL
10.0000s
1.0000Ω
Step 15
Press the
Step 16
Use the ▼ key to select Chain.
►Chain: Off
Step 17
Use Entry keys or the knob to input 0 (it is chained to itself to realize continuous execution).
Press the Enter key to confirm and save the Chain value in EEPROM assigned by the sequence number.
►Chain: 0
Step 18
Press the
0.000V
0.000A
42
key +
key +
key to insert a new step at step 3.
key to delete the step 2.
key to exit step edit screen and save the sequence data in EEPROM assigned by the sequence number.
key to exit sequence operation menu.
►Data:<New/Edit>
Count:
5
0.000A
CCH OFF
GMC-I Messtechnik GmbH
4.8.3 Starting/Stopping the List
Example 1: Start the No.0 sequence, and stop the active sequence operation.
Steps
Description
Display
and
key to enter into sequence operation menu.
►No.:
1
Step 1
Press
Step 2
0
Use Entry keys or knob to set the sequence number (No.) to 0, and press the Enter key to confirm (recall the sequence in EEPROM ►No.:
Memo: Test Power
assigned by the sequence number).
Step 3
Press the
Step 4
Press the
key +
Step 5
Press the
key +
Memo:
0.000V
0.000A
0.000A
CCH OFF
key to activate sequence operation.
0.000V
1.0000A
0.0000A
LCCL ON
key to stop sequence operation.
0.000V
0.000A
0.000A
CCH OFF
key to exit sequence operation menu.
For the above steps, the corresponding SCPI commands should be:
LIST:RECALL
LIST
LIST
4.9
0
ON
OFF
Recalls the number 0 sequence
Starts sequence operation
Stops sequence operation
Battery Discharge Operation
E Load
Figure 1.1
Battery discharge operation diagram
The operating procedures for battery discharge operation are shown below:
1
Press the
key to turn off the load, and connect the tested battery correctly.
2
Press the
3
Press the
key to enter into battery discharge parameters edit screen. Use ▲ and ▼ keys to select the parameter. Use the
Entry keys or the knob together with ◄ ► keys to input termination voltage value and discharge current value. Press the Ente key
to confirm.
4
Press the
key to exit the battery discharge parameters edit screen.
5
Press the
key to turn on the load, and start battery discharge operation.
6
Press the
key to turn off the load, and stop battery discharge operation.
7
Press the
key to clear the discharge time and discharge capacity of the battery.
8
Press the
key +
key +
GMC-I Messtechnik GmbH
key to enter into battery discharge operation screen.
key to exit the battery discharge operation.
43
Example 1: Enter into the battery discharge operation; set the termination voltage to 15 V, and the discharge current to 3 A; turn on the
load, and start the battery discharge operation; turn off the load and stop the battery discharge operation; clear the discharged time
and discharged capacity of the battery; exit the battery discharge operation.
Steps
Description
Step 1
Press the
Step 2
Press
Display
key to turn off the load, and connect the tested battery correctly.
key +
Press the
key to enter into battery discharge operation screen.
key to enter into battery dischrage parameters edit screen. Use the Entry keys or the knob together with
Step 3
20.000V
0.000A
0.000A
CCH OFF
20.000V
0.000AH
0.000A
00:00:00
►MinVolt:0.000V
DisCurr:2.000A
the ◄ ► keys to set terminaion voltage to 15 V. Press the Enter key to confirm.
Step 4
Use the Entry keys or the knob together with ◄ ► keys to set discharge current to 3 A. Press the Enter key to confirm.
Step 5
Press the
Step 6
Press the
Step 7
Press the
Step 8
Press the
Step 9
Press the
MinVolt:15.000V
►DisCurr:3.000A
20.000V
0.000AH
0.000A
00:00:00
key to turn on the load, and start battery discharge peration.
20.000V
0.000AH
3.000A
00:00:01
key to turn off the load, and stop battery discharge operation.
20.000V
0.012AH
0.000A
00:00:15
20.000V
0.000AH
0.000A
00:00:00
20.000V
0.000A
0.000A
CCH OFF
key to exit the battery discharge parameters edit screen.
key to clear the discharged time and discharged capacity of the battery.
key +
key to exit the battery discharge operation.
For the above operating procedures, the corresponding SCPI commands should be:
INPUT
BATTERY
BATT:VOLT:OFF
BATT:DIS:CURR
INPUT
INPUT
operationBATTERY
4.10
OFF
ON
15V
3A
ON
OFF
OFF
Turns off the load
Activates the battery discharge operation screen
Sets termination voltage to 15V
Sets discharge current to 3A
Turns on the load, and start battery discharge operation
Turns off the load, and stop battery discharge operation
Exits the battery discharge operation
Saving and Recalling
The operating procedures for saving and recalling operation are shown below:
1
Press the
key +
key to enter into the saving menu, or press the
key +
key to enter into the recalling menu.
2
Press the Entry keys or the knob to select saving or recalling position.
3
Press the Enter key to confirm and exit the saving or recalling menu. If the saving is selected, the values of the 2-1 parameters will
be saved in the specified location (0-9) in EEPROM; if the recalling is selected, the values of the parameters should be the values
saved in specified location in EEPROM.
Example 1: Set the mode to CCL; set the current value to 2 A; turn on the load; save the settings in Location 0 in EEPROM; the next
time the load is turned on, these settings will become the power-on settings.
Procedure
Description
Display
1
Set the mode to CCL; set the current value to 2 A; turn on the load.
0.000V
2.0000A
2
Press the
Save File
No. 1
3
Press Entry keys or the knob to select the Location 0 for saving.
Save File
No. 0
4
Press the Enter key to confirm and exit the load saving menu.
0.000V
2.0000A
+
keys to enter into the saving menu.
0.000A
CCL ON
0.000A
CCL ON
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CCH
Sets the load to CCH status
CURR
2
Sets the current value to 2A
*SAV
0
Saves the present settings in Location 0 in EEPROM
44
GMC-I Messtechnik GmbH
Example 2: Based on the above example, set the mode to CV; set the voltage value to 40 V; turn off the load; recall the values saved in
Location 0 in EEPROM. The detailed operations are shown below:
Procedure
Description
Display
1
Set the mode to CV; set the voltage value to 40 V; turn off the load(please refer to section 4.4 for detailed operations).
0.000V
40.000V
2
Press the
Recall File:
No. 0
3
Press the Entry keys or the knob to select the recalled Location 0.
Recall File:
No. 0
4
Press the Enter key to confirm and return to the previous menu.
0.000V
2.0000A
key +
key to enter into the recalling menu..
0.000A
CV OFF
0.000A
CCL ON
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CV
Sets the CV mode
VOLT
40
Sets the voltage value to 40V
*RCL
0
Recalls the values saved in location 0 in EEPROM
4.11
Clearing Protection Settings
The operating procedures for clear protection settings are shown below:
1
Eliminate the reason that causes the protection status.
2
Press the
and
keys.
Example 1: Clear RV protection of the load. The detailed operations are shown below:
Procedure
Description
Display
1
Connect the power supply to the load again.
0.000V
2.0000A
0.0000A
RV OFF
2
Press
0.000V
2.0000A
0.0000A
CCL OFF
and
keys.
For the above operating procedures, the corresponding SCPI commands should be:
INP:PROT:CLE
S:
Clears the protection status
4.12
Error Messages
When an error occurs to the load, the operating procedures are shown below:
1
Press the
key +
key to display the error messages.
Example 1: When a wrong command is sent, the ERR indicator will turn red. Check the error message.
The detailed operations are shown below:
Procedure
Description
1
Press the
Display
2
If there are still erros that have not been examined, repeat the first operation.
3
If all errors have been checked, the EER indicator will be turned off. If repeat the first operation right now,
display will shows “NO ERROR”.
key +
key to display the error message.
ERROR -103
NO ERROR
For the above operating procedures, the corresponding SCPI commands should be:
Queries the error code and error messages
SYST:ERR?
Note
An overview of the individual error messages and the associated explanations are provided in the „SPL SCPI Programming
Guide“ in Chapter 3.
GMC-I Messtechnik GmbH
45
4.13
Triggered Operation
When the triggering mode is EXTernal, the triggered operations are shown below:
1
Set pending trigger function (see section 2.8).
2
Press the
key +
key or trigger terminal (TRIG IN) to receive TTL falling edge, and a trigger occurs.
Example 1: Select “List” for the trigger function to trigger a sequence operation. The sequence is the one mentioned in Example 1 in
section 4.8.1.
The detailed operations are shown below:
Steps
Description
Step 1
Select “List” in main menu for the trigger function (please see section 4.14.6 for detailed introduction).
Step 2
Press
key +
key or trigger terminal (TRIG IN) to receive TTL low level. The load‘s input will change accordingly when
the sequence parameters are changed. Pressing
key +
key has the same effect as pressing
key +
key
at this time.
For the above operating procedures, the corresponding SCPI commands should be:
TRIG:FUNC LIST
Selects „LIST“ for trigger function
TRIG
A trigger occurs
4.14
Main Menu
The operating procedures for the main menu are shown below:
1
Press the
key to enter into the main menu.
2
Use ▲ and ▼ keys to select the menu item.
3
Use the knob or ◄ ► keys to select the parameter; or use Entry keys or the knob together with ◄ ► keys to input set value.
key to exit the parameter modification or exit the main menu.
Press
4
Press the Enter key to confirm.
5
Press the
key to exit the main menu.
4.14.1 Loading Default Values
Example: Load the default values.
The detailed operations are shown below:
Procedure
Description
1
Press the
2
Use the knob or ◄ key to select the parameter “Yes”. Press the Enter key to confirm.
3
46
Press the
Display
key to enter into the main menu.
Load Default :
Yes *No
Load Default :
*Yes No
key to exit the main menu.
GMC-I Messtechnik GmbH
4.14.2 Short Circuit Operation
Example: Short circuit operation in CV mode. The detailed operations are shown below:
The detailed operations are shown below:
Procedure
Description
1
Press the
2
Use the ▼ key to select the menu item “Short”; use the knob or ◄ key to select the parameter “On”.
Press the Enter key to confirm.
3
Press the
Display
key to enter into the main menu.
Load Default :
Yes *No
Short
On *Off
key to exit the main menu.
4
Press the
key to enter into the mode selection and parameter setting menu; use ▲ ▼ keys to select CV mode.
Press the Enter key to confirm and exit the mode selection and parameter setting menu.
0.000V
0.000V
0.000A
sCV OFF
5
Press the
0.000V
0.000V
0.000A
sCV ON
key to turn on the load.
For the above operating procedures, the corresponding SCPI commands should be:
INPUT:SHORT
ON
Sets the load to short circuit
MODE
CV
Sets the mode
INPUT
ON
Turns on the load
4.14.3 Von Point/Von Latch
Example: Set the Von Latch to Off; set Von Point to 1 V; turn on the load; This example implements the automatic turning on/off of the
load‘s input, which simplifies the test operations greatly. The detailed operations are shown below:
Procedure
Description
Display
1
Press the
2
Use the ▼ key to select the menu item “Von Latch”; use the knob or ► key to select the parameter “Off”.
Press the Enter key to confirm.
3
Use the ▼ key to select the menu item “Von Point”; use Entry keys or the knob together with ▲ ▼ keys to input the voltage value. Von Point :
Press the Enter key to confirm.
1.000V
4
Press the
key to exit the main menu.
0.000V
0.000A
0.000A
CCH OFF
5
Press the
key to turn on the load.
0.000V
0.000A
0.000A
CCH ON
key to enter into the main menu.
Load Default :
Yes *No
Von Latch :
On *Off
For the above steps, the corresponding SCPI commands should be:
INP:VOLT:ON:LATCH OFF Disables the Von Latch
INP:VOLT:ON
1 Sets the Von voltage to 1 V
INPUT
ON Turns on the load
GMC-I Messtechnik GmbH
47
4.14.4 Current Limit in CV Mode
Example: Set the load to CV mode; set the voltage value to 2 V; set the current limit value in CV mode (CV Curr Limit) to 20 A;
turn on the load. The detailed operations are shown below:
Procedure
Description
Display
1
Set the load to CV mode, and set the voltage value to 2 V (see section 4.5 for details).
0.000V
2.000V
Step2
Press the
Load Default :
Yes *No
Step3
Use the ▼ key to select the menu item “CV Curr Limit”; use Entry keys or the knob together with ◄ ► keys to input the current
limit value to 20 A. Press the Enter key to confirm.
CV Curr Limit :
20.000A
Step4
Press the
key to exit the main menu.
0.000V
2.000A
0.000A
CCH OFF
Step5
Press the
key to turn on the load.
0.000V
2.000A
0.000A
CCH ON
key to enter into the main menu.
0.000A
CV OFF
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CV Sets the mode
VOLT
2 Sets the voltage setpoint to 2 V
CV:CURR:LIM
20A Sets the current limit value to 20 A in CV mode
INPUT
ON Turns on the load
4.14.5 Current Rise/Fall Rate in CC Mode
Example: Set the load to CCH mode, set the current value to 2 A; set the current rise rate (Curr Rise Rate) in CC mode to 0.002 A/μs;
set the current fall rate (Curr Fall Rate) in CC mode to 0.005 A/μs; turn on the load; turn off the load.
The detailed operations are shown below:
Procedure
Description
Display
1
Set the load to CCH mode, and set the current value to 2 A (see section 5.1 for details).
0.000V
2.000A
2
Press the
Load Default :
Yes *No
3
Use the ▼ key to select the menu item “Curr Rise Rate”; use Entry keys or the knob together with ◄ ► keys to input the current Curr Rise Rate :
value to 0.002 A/μs. Press the Enter key to confirm.
0.002A/us
4
Use the ▼ key to select the menu item “Curr Fall Rate”; use Entry keys or the knob together with the ◄ ► keys to input the
current value to 0.005 A/μs. Press the Enter key to confirm.
Curr Fall Rate :
0.005A/μs
5
Press the
key to exit the main menu.
0.000V
2.000A
0.000A
CCH OFF
6
Press the
key to turn on the load.
0.000V
2.000A
0.000A
CCH ON
7
Press the
key to turn off the load.
0.000V
2.000A
0.000A
CCH OFF
key to enter into the main menu.
0.000A
CCH OFF
For the above operating procedures, the corresponding SCPI commands should be:
MODE
CCH Sets the mode
CURR
2 Sets the current value to 2 A
CURR:RISE:RATE
0.002 Sets the current rise rate in CC mode to 0.002 A/μs
CURR:FALL:RATE
0.005 Sets the current fall rate in CC mode to 0.005 A/μs
INPUT
ON Turns on the load
INPUT
OFF Turns off the load
48
GMC-I Messtechnik GmbH
4.14.6 Trigger Function Selection
Example: Select „Tran“ in trigger function selection (Trig Function).
Procedure
Description
Display
1
Press the
2
Use the ▼ key to select the menu item “Trig Function”; use the knob or the ◄ key to select the parameter “Tran”.
Press the Enter key to confirm.
Trig Function :
*Tran List
3
Press the
0.000V
0.000A
key to enter into the main menu.
key to exit the main menu.
Load Default :
Yes *No
0.000A
CCH OFF
For the above operating procedures, the corresponding SCPI commands should be:
TRIG:FUNC
TRAN
Selects transient operation (TRAN) for trigger function
4.14.7 Knob Function
Example: Enable the knob function.
Procedure
Description
Display
1
Press the
2
Use the ▼ key to select the menu item “Knob”; use the knob or the ◄ key to select the parameter “On”.
Press the Enter key to confirm.
Knob :
On *Off
3
Press the
0.000V
0.000A
key to enter into the main menu.
key to exit the main menu.
Load Default :
Yes *No
0.000A
CCH OFF
4.14.8 Key Sound
Example: Enable the key sounds.
Procedure
Description
Display
1
Press the
2
Use the ▼ key to select the menu item “Key Sound”; use the knob or the ◄ key to select the parameter “On”.
Press the Enter key to confirm.
Key Sound :
On *Off
3
Press the
0.000V
0.000A
key to enter into the main menu.
key to exit the main menu.
Load Default :
Yes *No
0.000A
CCH OFF
4.14.9 Communication Interface
Example 1: Select RS232 interface; set the baud rate to 9600; set parity check to None; set data bit to 8; set stop bit to 2;
enable the flow control.
Steps
Description
Display
Step 1
Press the
Step 2
Use the ▼ key to select the menu item “Interface”; use the knob or the ◄ key to select the parameter “RS232”.
Press the Enter key to confirm.
Interface :
*RS232 USB GPIB
Step 3
Use the ▼ key to select the menu item “Baud Rate”; use the knob or the ◄ key to select the parameter “9600”.
press the Enter key to confirm.
Baud Rate :
*9600 19200
Step 4
Use the ▼ key to select the menu item “Knob”; use the knob or the ◄ key to select the parameter “On”.
Press the Enter key to confirm.
Wählen Sie mit Hilfe der Taste ▼den Menüpunkt „Parity Check“. Setzen Sie mit dem Drehgeber oder der Taste ◄ den Parameter
auf „None“. Betätigen Sie die Taste Enter, um die Eingabe zu bestätigen.
Parity Check :
*None Even Odd
Step 5
Use the ▼ key to select the menu item “Data Bit”; use the knob or the ◄ key to select the parameter “8”.
Press the Enter key to confirm.
Data Bit :
*8 7
Step 6
Use the ▼ key to select the menu item “Stop Bit”; use the knob or the ◄ key to select the parameter “2”.
Press the Enter key to confirm.
Stop Bit :
1 *2
Step 7
Use the ▼ key to select the menu item “Flow Control”; use the knob or the ◄ key to select the parameter “On”.
Press the Enter key to confirm.
Flow Control :
On *Off
Step 8
Press the
0.000V
0.000A
key to enter into the main menu.
key to exit the main menu.
Load Default :
Yes *No
0.000A
CCH OFF
Example 2: Select GPIB interface, set the address to 18.
Steps
Description
Step 1
Press the
Step 2
Use the ▼ key to select the menu item “Interface”; use the knob or the ► key to select the parameter “GPIB”.
Press the Enter key to confirm.
Interface :
RS232 USB *GPIB
Step 3
Use the ▼ key to select the menu item “GPIB Address”; use Entry keys or the knob together with ◄ ► keys to select the
parameter “18”. Press the Enter key to confirm.
GPIB-Adresse :
18
Step 4
Press the
0.000V
0.000A
GMC-I Messtechnik GmbH
Display
key to enter into the main menu.
key to exit the main menu.
Load Default :
Yes *No
0.000A
CCH OFF
49
5
Remote Programming Operation
SPL Series Electronic Load supports both local operation and remote control. The previous chapter has introduced how to use the
front panel keys and knobs to operate on the load. This chapter will introduce you to how to program the load from the remote controller. The similarities between local and remote programming will become apparent as you read this chapter. The intent of this chapter is
to help users quickly become familiar with remote programming operations. Programming examples given in this chapter use the SCPI
commands in their simpliest form. Please refer to the “SPL SCPI Programming Guide” for detailed introduction of all SCPI commands.
5.1
Communication Interface
5.1.1 RS232
RS232 interface is standard. Use the cable shipped with the load to connect the load to a computer correctly. Select RS232 interface
in the MENU, and set the baud rate, parity, data bit, stop bit, and flow control parameters to be used. Set the same parameters in the
software on the computer, and input the right SCPI command to operate the load.
5.1.2 USB
USB interface is optional. It can be used only when the load has installed USB communication module and the relevant driver has been
installed on the computer. Use USB cable to connect the load to a computer correctly. Select the USB interface in the MENU and input
the right SCPI command to operate the load.
5.1.3 GPIB
GPIB interface is optional. It can be used only when the load has installed GPIB communication module and the relevant driver has
been installed on the computer. Use GPIB cable to connect the load to a computer correctly. Select the GPIB interface in the MENU,
and set GPIB address. Each instrument you connect to the GPIB interface has a unique address assigned to it. Input the right SCPI
command to operate the load.
5.2
Flow Control Selection
When RS232 interface is used, the flow control can be enabled or disabled. The load provides two options: ON and OFF. ON: enabling
the flow control; OFF: disabling the flow control. When “OFF” is selected for flow control, the lower baud rate should be set to ensure
normal communication.
5.3
Remote Control Indicator
There is a REM indicator on the front panel of the load. When the load receives the remote command (SYSTem:REMote) via RS232 or
GPIB interface, the REM annunnciator turns on. And the load enters remote control status. In this status, all operations on the load are
key +
key). The REM remote concontrolled by the remote controller; the front panel keypad and knob has no effect (except
trol indicator turns off and the load returns to the local control after receiving the command to return to local control (e.g. SYSTem:LOCal). Or you can return the load to local control from remote control by pressing the
key +
key.
5.4
Sending a Remote Command
You can use the computer to set operation mode and operation parameters remotely for the load.
5.5
Returning Data
The load can return the values of parameter settings, input voltage and current, as well as input power to computer. It can also return
information relating to the internal operation and module identification. For example: the query command ( “MEAS:CURR?”) asks the
load to return the actual current at the Input binding posts. Please refer to “SPL SCPI Programming Guide” for detailed information on
using query commands. The load stores the response to the query in an output buffer which will hold the information until it is read by
the computer or is replaced with new information.
5.6
Remote Programming Commands
The SCPI commands have many optional key words for the programmer. Getting familiar with those key words will help you to know
the programming better. Most of the commands have a query syntax which allows the present parameter settings to be returned to the
controller. Please refer to “SPL SCPI Programming Guide” for details. The load` s major functions can be programmed with a relatively
few number of these commands. The following points are important to remember when you are remotely programming CC, CR, CV,
and CP values.
5.6.1 Modes
The CC, CR, CV, and CP values can be programmed whether or not the associated mode is active. If the input is turned on, all of the
applicable values will take effect at the input when the associated mode is selected.
5.6.2 Transient Levels
The transient CC, CV, or CR level must be set to a higher level than the respective low level, or the transient operation will be disabled.
50
GMC-I Messtechnik GmbH
5.6.3 Programmable Current Protection
When programmable current protection is enabled, and the programmed current limit and time delay are exceeded, the load‘s input will
be turned off.
5.7
CC Mode Examples
This example sets the current level to 0.5 A, and then reads back the actual current value.
1 "INPUT OFF"
2 "MODE CCL"
3 "CURR 0.5"
4 "INPUT ON"
5 "MEAS:CURR?"
5.8
Turns off the load` s input
Selects the CCL mode
Sets current level to 0.5 A
Turns on the load‘s input
Measures the actual input current
CV Mode Examples
This example presets the trigger voltage to 5 V, and selects the external trigger source.
1 "INPUT OFF"
2 "MODE VOLT"
3 "VOLT:TRIG 5"
4 "TRIG:SOUR EXT"
5 "INPUT ON"
Turns off the load`s input
Selects the CV mode
Presets the trigger voltage to 5V
Selects the external input as the trigger source
Turns on the load`s input
In this example, the input voltage will be set to 5 V when the change in the level of the external trigger signal is received.
5.9
CR Mode Examples
This example sets the current protection limit to 3 A, sets the time delay to 10 s, programs the resistance level to 10 Ω, and reads back
the computed power.
1 "INPUT OFF"
Turns off the load`s input
2 "MODE CRM"
Selects the CRM mode
3 "CURR:PROT: LEV 3.DEL 10" Sets the current protection limit to 3 A and current protection delay time to 10 s
4 "CURR:PROT:STAT ON"
Activates the current protection
5 "RES 10"
Sets resistance level to 10 Ω
6 "INPUT ON"
Turns on the load‘s input
7 "MEAS:POW?"
Measures the input power level
5.10
Continuous Transient Operation Example
This example sets CV transient high/low levels, the associated
times for transient rising/falling edge, high/low level times, and parameters for transient operation.
1 "INPUT OFF"
2 "MODE CV"
3 "VOLT:LOW 0.5"
4 "VOLT:HIGH 1"
5 "TRAN:LTIM 200us"
6 "TRAN:HTIM 300us"
7 "TRAN:RTIM 10us"
8 "TRAN:FTIM 20us"
9 "TRAN:MODE CONT "
10 "TRAN ON"
11 "INPUT ON"
GMC-I Messtechnik GmbH
Turns off the load` s input
Selects the CV mode
Sets the transient low level to 0.5 V
Sets the transient high level to 1 V
Sets transient low level time to 200 μs
Sets transient high level time to 300 μs
Sets the time for transient rising edge to 10 μs
Sets the time for transient falling edge to 20 μs
Selects the continuous transient operation
Activates the transient operation
Turns on the load‘ s input
51
5.11
Pulsed Transient Operation Example
This example selects CV pulsed transient operation, selects the bus as the trigger source, and programs a pulse width of 1 millisecond.
1 "INPUT OFF"
2 "MODE CV"
3 "TRIG:SOUR BUS"
4 "VOLT: LLEV 0.5"
5 "VOLT:HIGH 1"
6"TRAN:HTIM 1ms"
7 "TRAN:RTIM 10us"
8 "TRAN:FTIM 10us"
9 "TRAN:MODE PULSE "
10 "TRAN ON"
11 "INPUT ON"
12 "*TRG"
52
Turns off the load‘s input
Selects the CV mode
Selects the bus as the trigger source
Sets the transient low level to 0.5 V
Sets the transient high level to 1 V
Sets transient high level time to 1 ms
Sets the time for transient rising edge to 10 μs
Sets the time for transient falling edge to 10 μs
Selects the pulsed transient operation
Activates the transient operation
Turns on the load` s input
*TRG command generates a 1 millisecond high-level pulse at the load‘s input
GMC-I Messtechnik GmbH
6
Specifications
Type
SPL 250-30
SPL 400-40
SPL 200-20
SPL 350-30
Article number
K852A
K853A
K854A
K855A
Front Load Input
1
1
1
1
Current
0 ... 30 A
0 ... 40 A
0 ... 20 A
0 ... 30 A
Input Ratings
Voltage
0 ... 80 V
0 ... 80 V
0 ... 200 V
0 ... 200 V
Power 1
250 W at 40 °C
400 W at 40 °C
200 W at 40 °C
350 W at 40 °C
Input Characteristics
V
80 V
8.3 V
0.6 V
Minimum Operating Voltage
@ Full Scale Current
Max.
Power Contour
3.1 A
30 A
I
0.6 V
V
80 V
10 V
0.6 V
Max.
Power Contour
5A
40 A
I
0.6 V
U
200 V
10 V
1.2 V
Max.
Power Contour
1A
20 A
I
U
200 V
11.7 V
1.2 V
1.2 V
1.2 V
Max.
Power Contour
5A
30 A
I
Constant Current Mode (CC)
Low Range (CCL)
0 ... 3 A
0 ... 4 A
0 ... 2 A
0 ... 3 A
Resolution
0.1 mA
0.1 mA
0.1 mA
0.1 mA
Accuracy
0.1% + 5 mA
0.1% + 5 mA
0.1 % + 5 mA
0.1 % + 5 mA
High Range (CCH)
0 ... 30 A
0 ... 40 A
0 ... 20 A
0 ... 30 A
Resolution
1 mA
1 mA
1 mA
1 mA
Accuracy
0.1% + 10 mA
0.1% + 10 mA
0.1 % + 10 mA
0.1 % + 10 mA
Constant Voltage Mode (CV)
Range
0 ... 80 V
0 ... 80 V
0 ... 200 V
0 ... 200 V
Resolution
1 mV
1 mV
2 mV
2 mV
Accuracy
0.1% + 10 mV
0.1% + 10 mV
0.1 % + 25 mV
0.1 % + 25 mV
Low Range (CRL)
0.02 to 2 Ω
0.02 to 2 Ω
0.0666 ... 6.66 Ω
0.0666 ... 6.66 Ω
Resolution
0.1 mΩ
0.1 mΩ
0.1 mΩ
0.1 mΩ
Accuracy
0.5% + 12 mΩ @ I > 4 A
0.5% + 12 mΩ @ I > 4 A
0.5 % + 40 mΩ @ I > 3 A
0.5 % + 40 mΩ @ I > 3 A
Constant Resistance Mode (CR)
Middle Range (CRM)
2 ... 200 Ω
2 ... 200 Ω
6.66 ... 666 Ω
6.6 ... 666 Ω
Resolution
8.6 μS 2
8.6 μs
2.6 μS 2)
2.6 μS
Accuracy
0.3% + 1.25 mS @ U > 8 V
0.3% + 1.25 mS @ U > 8 V
0.3 % + 375 mS @ U > 20 V
0.3 % + 375 mS @ U > 20 V
High Range (CRH)
20 ... 2000 Ω
20 ... 2000 Ω
66.6 ... 6660 Ω
66.6 ... 6660 Ω
Resolution
0.96 μs
0.96 μs
0.29 μS
0.29 μS
Accuracy
0.3% + 0.625 mS @ U > 8 V
0.3% + 0.625 mS @ U > 8 V
0.3 % + 188 μS @ U > 20 V
0.3 % + 188 μS @ U > 20 V
Constant Power Mode (CP)
Range
0 ... 250 W
0 ... 400 W
0 ... 200 W
0 ... 350 W
Resolution @ P < 100 W
1 mW
1 mW
1 mW
1 mW
Resolution @ P ≥ 100 W
10 mW
10 mW
10 mW
10 mW
Accuracy
0.2% + 600 mW
0.2% + 600 mW
0.2 % + 600 mW
0.2 % + 600 mW
Current Measurement
Low Range
0 ... 3 A
0 ... 4 A
0 ... 2 A
0 ... 3 A
Resolution
0.1 mA
0.1 mA
0.1 mA
0.1 mA
Accuracy
0.05% + 4 mA
0.05% + 4 mA
0.05 % + 4 mA
0.05 % + 4 mA
High Range
0 ... 30 A
0 ... 40 A
0 ... 20 A
0 ... 30 A
Resolution
1 mA
1 mA
1 mA
1 mA
Accuracy
0.05% + 8 mA
0.05% + 8 mA
0.05 % + 8 mA
0.05 % + 8 mA
Voltage Measurement
Range
0 ... 80 V
0 ... 80 V
0 ... 200 V
0 ... 200 V
Resolution
1 mV
1 mV
1 mV
1 mV
Accuracy
0.1% + 8 mV
0.1% + 8 mV
0.1 % + 50 mV
0.1 % + 50 mV
GMC-I Messtechnik GmbH
53
Type
SPL 250-30
SPL 400-40
SPL 200-20
SPL 350-30
Article number
K852A
K853A
K854A
K855A
Power Measurement
Range
0 ... 250 W
0 ... 400 W
0 ... 200 W
0 ... 350 W
Resolution @ P < 100 W
1 mW
1 mW
1 mW
1 mW
Resolution @ P ≥ 100 W
10 mW
10 mW
10 mW
10 mW
Accuracy
0.1% + 600 mW
0.1% + 600 mW
0.1 % + 600 mW
0.1 % + 600 mW
Range CCH
1 mA/μs ... 3 A/μs
1 mA/μs ... 4 A/μs
1 mA/μs ... 2 A/μs
1 mA/μs ... 3 A/μs
Range CCL 3
100 μA/μs ... 300 mA/μs
100 μA/μs ... 400 mA/μs
100 μA/μs ... 200 mA/μs
100 μA/μs ... 300 mA/μs
Resolution
1 mA/μs
1 mA/μs
1 mA/μs
1 mA/μs
Accuracy 4
3% + 10 μs
3% + 10 μs
3 % + 10 μs
3 % + 10 μs
Continuous, pulse, toggled
Current Slew Rates
Transient Operation
Transient Mode
Continuous, pulse, toggled
Continuous, pulse, toggled
Continuous, pulse, toggled
Frequency Range 5
0.38 Hz ... 50 kHz
0.38 Hz ... 50 kHz
0.38 Hz ... 50 kHz
0.38 Hz ... 50 kHz
Highest/Lowest Time
0 ... 655.35 ms
0 ... 655.35 ms
0 ... 655.35 ms
0 ... 655.35 ms
Resolution
10 μs
10 μs
10 μs
10 μs
Accuracy
0.2% + 10 μs
0.2% + 10 μs
0.2 % + 10 μs
0.2 % + 10 μs
Rise/Fall Time
10 μs ... 655.35 ms
10 μs ... 655.35 ms
10 μs ... 655.35 ms
10 μs ... 655.35 ms
Resolution
10 μs
10 μs
10 μs
10 μs
Accuracy
0.2% + 10 μs
0.2% + 10 μs
0.2 % + 10 μs
0.2 % + 10 μs
List Characteristics (Sequence)
Step Rate
10 μs ... 100,000 s
10 μs ... 100,000 s
10 μs ... 100000 s
10 μs ... 100000 s
Resolution
10 μs
10 μs
10 μs
10 μs
Accuracy
0.2% + 10 μs
0.2% + 10 μs
0.2 % + 10 μs
0.2 % + 10 μs
Number of Steps
1 ... 50
1 ... 50
1 ... 50
1 ... 50
1 ... 65535
Cycle
1 ... 65,535
1 ... 65,535
1 ... 65535
Storage Capacity
7 Lists
7 Lists
7 Lists
7 Lists
Expanded Functions
Chain
Chain
Chain
Chain
Battery Discharge
Discharge Time
1 s ... 100 h
1 s ... 100 h
1 s ... 100 h
1 s ... 100 h
Resolution
1s
1s
1s
1s
Accuracy
0.2% + 1 s
0.2% + 1 s
0.2 % + 1 s
0.2 % + 1 s
Battery Capacity
1 mA ... 3000 Ah
1 mA ... 4000 Ah
1 mA ... 2000 Ah
1 mA ... 3000 Ah
Resolution
1 mAh
1 mAh
1 mAh
1 mAh
Accuracy
0.3% + 0.01 Ah
0.3% + 0.01 Ah
0.3 % + 0.01 Ah
0.3 % + 0.01 Ah
CCL Mode
3.3 A
4.4 A
2.2 A
3.3 A
CCH Mode
33 A
44 A
22 A
33 A
CV Mode
0V
0V
0V
0V
Short Circuit
CRL Mode
0.0180 Ω
0.0180 Ω
0.06 Ω
0.06 Ω
CRM Mode
1.80 Ω
1.80 Ω
6Ω
6Ω
60 Ω
CRH Mode
18 Ω
18 Ω
60 Ω
CPV Mode
270 W
420 W
220 W
370 W
CPC Mode
0W
0W
0W
0W
Current
3 A/μs
4 A/μs
2 A/μs
3 A/μs
Voltage
0.6 V/μs
0.6 V/μs
0.6 V/μs
0.6 V/μs
Programmable Open Circuit
≥ 20 kΩ
≥ 20 kΩ
≥ 20 kΩ
≥ 20 kΩ
Maximum Slew Rate
Trigger Input
Trigger Level
TTL falling edge
TTL falling edge
TTL falling edge
TTL falling edge
Trigger Pulse Width
≥ 10 μs
≥ 10 μs
≥ 10 μs
≥ 10 μs
Current
33 A
44 A
22 A
33 A
Voltage
84 V
84 V
210 V
210 V
Protection Features
OV, OC, OP, OT, RV
OV, OC, OP, OT, RV
OV, OC, OP, OT, RV
OV, OC, OP, OT, RV
Maximum Input Levels
54
GMC-I Messtechnik GmbH
Type
SPL 250-30
SPL 400-40
SPL 200-20
SPL 350-30
Article number
K852A
K853A
K854A
K855A
Input OFF
25 A
30 A
25 A
25 A
Input ON
40 A
50 A
35 A
40 A
Current (rms/p-p)
3 mA / 30 mA
3 mA / 30 mA
3 mA / 30 mA
3 mA / 30 mA
Voltage (rms)
5 mV
5 mV
12 mV
12 mV
Reverse Current Capacity
Ripple and Noise
Environmental Conditions
Temperature
0 ... 50 °C
0 ... 50 °C
0 ... 50 °C
0 ... 50 °C
Relative Humidity
≤ 85%
≤ 85%
≤ 85%
≤ 85%
Remote Interface 6
RS232, GPIB
RS232, GPIB
RS232, GPIB
RS232, GPIB
Programming Language
SCPI
SCPI
SCPI
SCPI
Mains Input
Supply Voltage
AC 115 V / AC 230 V +10/−15% AC 115 V / AC 230 V +10/−15% AC 115 V / AC 230 V +10/−15% AC 115 V / AC 230 V +10/−15%
Line Frequency
48 ... 63 Hz
48 ... 63 Hz
48 ... 63 Hz
48 ... 63 Hz
Dimensions
213 mm x 104 mm x 391 mm
213 mm x 104 mm x 391 mm
213 mm x 104 mm x 391 mm
213 mm x 104 mm x 391 mm
Dimensions with rubber protection
226 mm x 110 mm x 414 mm
226 mm x 110 mm x 414 mm
226 mm x 110 mm x 414 mm
226 mm x 110 mm x 414 mm
Net Weight
5.8 kg
5.8 kg
5.8 kg
5.8 kg
Gross Weight (rubber protection included)
Approx. 6 kg
Approx. 6 kg
Approx. 6 kg
Approx. 6 kg
1)
Maximum continuous power available is derated linearly from 100% of maximum at 40 °C to 75 % of maximum at 55 °C.
2)
Conductance (S) = 1 / resistance (Ω).
3)
The setpoint is 10 times larger than the rise rate in CCL mode (constant current low level range).
4)
The momentary transition time is defined as the time required for the input to change from 10% to 90% or from 90% to 10% of the programmed excursion.
5)
Transient frequency depends on the time for high/low level and rising/falling edge.
6)
Full remote control via RS232 with optional GPIB and USB.
Dimensions
GMC-I Messtechnik GmbH
55
7
Repair and Replacement Parts Service
When you need service, please contact:
GMC-I Service GmbH
Service-Center
Thomas-Mann-Straße 16 - 20
90471 Nürnberg • Germany
Phone +49 911 817718-0
Fax
+49 911 817718-253
E-Mail [email protected]
www.gmci-service.com
8
Product Support
When you need service, please contact:
GMC-I Messtechnik GmbH
Hotline Produktsupport
Phone
+49 911 8602-0
Fax
+49 911 8602-709
E-Mail
[email protected]
Edited in Germany • Subject to change without notice • A pdf version is available on the internet
GMC-I Messtechnik GmbH
Südwestpark 15
90449 Nürnberg • Germany
Phone +49 911 8602-111
Fax
+49 911 8602-777
E-Mail [email protected]
www.gossenmetrawatt.com
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement