Tektronix KEITHLEY 2380-500 User manual

Models 2380-500 and 2380-120 Programmable DC
Electronic Load Instruments Quick Start Guide
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Safety precautions
Observe the following safety precautions before using this product and any associated
instrumentation. Although some instruments and accessories would normally be used
with nonhazardous voltages, there are situations where hazardous conditions may be
present.
This product is intended for use by qualified personnel who recognize shock hazards
and are familiar with the safety precautions required to avoid possible injury. Read and
follow all installation, operation, and maintenance information carefully before using
the product. Refer to the user documentation for complete product specifications.
If the product is used in a manner not specified, the protection provided by the
product warranty may be impaired.
The types of product users are:
Responsible body is the individual or group responsible for use and maintenance
of equipment, for ensuring that the equipment is operated within its specifications and
operating limits, and for ensuring that operators are adequately trained.
Operators use the product for its intended function. They must be trained in
electrical safety procedures and proper use of the instrument. They must be protected
from electric shock and contact with hazardous live circuits.
Maintenance personnel perform routine procedures on the product to keep it
operating properly, for example, setting the line voltage or replacing consumable
materials. Maintenance procedures are described in the user documentation. The
procedures explicitly state if the operator may perform them. Otherwise, they should
be performed only by service personnel.
Service personnel are trained to work on live circuits, perform safe installations,
and repair products. Only properly trained service personnel may perform installation
and service procedures.
Keithley Instruments products are designed for use with electrical signals that are
measurement, control, and data I/O connections, with low transient overvoltages and
must not be directly connected to mains voltage or to voltage sources with high
transient overvoltages. Measurement Category II (as referenced in IEC 60664)
connections require protection for high transient overvoltages often associated with
local AC mains connections. Certain Keithley measuring instruments may be
connected to mains. These instruments will be marked as category II or higher.
Unless explicitly allowed in the specifications, operating manual, and instrument labels,
do not connect any instrument to mains.
Exercise extreme caution when a shock hazard is present. Lethal voltage may be
present on cable connector jacks or test fixtures. The American National Standards
Institute (ANSI) states that a shock hazard exists when voltage levels greater than 30 V
RMS, 42.4 V peak, or 60 V DC are present. A good safety practice is to expect that
hazardous voltage is present in any unknown circuit before measuring.
Operators of this product must be protected from electric shock at all times. The
responsible body must ensure that operators are prevented access and/or insulated
from every connection point. In some cases, connections must be exposed to
potential human contact. Product operators in these circumstances must be trained to
protect themselves from the risk of electric shock. If the circuit is capable of operating
at or above 1000 V, no conductive part of the circuit may be exposed.
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Do not connect switching cards directly to unlimited power circuits. They are intended
to be used with impedance-limited sources. NEVER connect switching cards directly
to AC mains. When connecting sources to switching cards, install protective devices to
limit fault current and voltage to the card.
Before operating an instrument, ensure that the line cord is connected to a
properly-grounded power receptacle. Inspect the connecting cables, test leads, and
jumpers for possible wear, cracks, or breaks before each use.
When installing equipment where access to the main power cord is restricted, such as
rack mounting, a separate main input power disconnect device must be provided in
close proximity to the equipment and within easy reach of the operator.
For maximum safety, do not touch the product, test cables, or any other instruments
while power is applied to the circuit under test. ALWAYS remove power from the
entire test system and discharge any capacitors before: connecting or disconnecting
cables or jumpers, installing or removing switching cards, or making internal changes,
such as installing or removing jumpers.
Do not touch any object that could provide a current path to the common side of the
circuit under test or power line (earth) ground. Always make measurements with dry
hands while standing on a dry, insulated surface capable of withstanding the voltage
being measured.
For safety, instruments and accessories must be used in accordance with the operating
instructions. If the instruments or accessories are used in a manner not specified in the
operating instructions, the protection provided by the equipment may be impaired.
Do not exceed the maximum signal levels of the instruments and accessories, as
defined in the specifications and operating information, and as shown on the
instrument or test fixture panels, or switching card.
When fuses are used in a product, replace with the same type and rating for continued
protection against fire hazard.
Chassis connections must only be used as shield connections for measuring circuits,
NOT as protective earth (safety ground) connections.
If you are using a test fixture, keep the lid closed while power is applied to the device
under test. Safe operation requires the use of a lid interlock.
If a screw is present, connect it to protective earth (safety ground) using the wire
recommended in the user documentation.
This symbol on an instrument means caution, risk of danger. The user should refer
to the operating instructions located in the user documentation in all cases where
the symbol is marked on the instrument.
This symbol on an instrument means caution, risk of electric shock. Use standard
safety precautions to avoid personal contact with these voltages.
This symbol on an instrument shows that the surface may be hot. Avoid personal
contact to prevent burns.
This symbol indicates a connection terminal to the equipment frame.
If the mercury symbol is on a product, it indicates that mercury is present in the
display lamp. Please note that the lamp must be properly disposed of according to
federal, state, and local laws.
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WARNING This heading in the user documentation explains dangers that might result
in personal injury or death. Always read the associated information very
carefully before performing the indicated procedure.
CAUTION This heading in the user documentation explains hazards that could
damage the instrument. Such damage may invalidate the warranty.
Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and all test cables.
To maintain protection from electric shock and fire, replacement components in
mains circuits — including the power transformer, test leads, and input jacks — must
be purchased from Keithley Instruments. Standard fuses with applicable national
safety approvals may be used if the rating and type are the same. Other components
that are not safety-related may be purchased from other suppliers as long as they are
equivalent to the original component (note that selected parts should be purchased
only through Keithley Instruments to maintain accuracy and functionality of the
product). If you are unsure about the applicability of a replacement component, call a
Keithley Instruments office for information.
To clean an instrument, remove power from the instrument. Use a damp cloth or
mild, water-based cleaner. Clean the exterior of the instrument only. Do not apply
cleaner directly to the instrument or allow liquids to enter or spill on the instrument.
Products that consist of a circuit board with no case or chassis (e.g., a data acquisition
board for installation into a computer) should never require cleaning if handled
according to instructions. If the board becomes contaminated and operation is
affected, the board should be returned to the factory for proper cleaning and servicing.
Safety precaution revision of January 2013.
Power and environmental specifications
For indoor use only.
Power supply 100/220 V,115/230 V, 50 Hz or 60 Hz
Operating altitude Maximum 2000 m (6562 ft ) above sea level
Operating
temperature 0 °C to 40 °C (32 °F to 104 °F), full accuracy to 80%
relative humidity at up to 35 °C (95 °F), non-condensing
Storage
temperature -20 °C to 70 °C (-4 °F to 158 °F), 10% to 85% relative
humidity at up to 40 °C (+104 °F) and 5% to 60% RH
above 40 °C (+104 °F) up to 70 °C (+158 °F)
Pollution degree 2
Carefully consider and configure the appropriate input-off state,
also source and compliance levels before connecting the
instrument to a device. Failure to consider the input-off state and
source and limit levels may result in damage to the instrument or
to the device under test (DUT).
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Introduction
The Keithley Models 2380-500-15/2380J-500-15/2380-120-
60/2380J-120-60 programmable high-precision DC electronic load
instruments support constant current (CC), constant voltage (CV),
constant resistance (CR), constant power (CP), and transient
operating modes. Its power ranges from 200 W to 250 W. The
resolution of its voltage and current are 0.1 mV and 0.01 mA. Its
adjustable current rise and fall times range from 0.0001 A/µs to 2.5
A/µs. Its measurement speed of voltage and current reaches up to 50
KHz. The load can be controlled externally from 0 through 10 V
using analog interfaces. It is equipped with built-in ports of RS232,
USB, and GPIB. The load also provides special LED mode to
conduct LED power supply test by simulating LED current.
The models are listed in the table.
Model number Description
2380-500-15/
2380J-500-15
Programmable DC Electronic Load. 500V, 15A
(rated for 110 V, 230 V, nominal line power)
2380-120-60/
2380J-120-60
Programmable DC Electronic Load.120V, 60A (rated
for 100 V, 200 V, nominal line power)
Overview of the front-panel options
The front panel of the 2380-500-15/2380J-500-15/2380-120-
60/2380J-120-60 is shown in the next figure.
①
②③
⑦
⑥
⑤
④
⑧
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Front panel description:
No. Description No. Description
1 Power On/Off switch 2 VFD display
3 Navigation control 4 Function keys
5 Numeric keypad, Esc
key, and combination
button
6 Navigation arrow keys,
Enter, Trigger and
On/Off button
7 Protective cover 8 Input terminals
Keypad overview
The models 2380-500-15/2380J-500-15/2380-120-60/2380J-120-60
keypad on the front panel is shown in the next figure.
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Button descriptions:
: Enables access to secondary functions
: Sets the instrument to local mode
: Recalls stored instrument settings
: Sets the load to CC mode and configures the current value
: Sets the load to CV mode and configures the voltage value
: Sets the load to CR mode and configures the resistance value
: Sets the load to CP mode and configures the power value
: Sets the load to trigger mode for list and transient function
: Turns the instrument on or off
: Confirms settings
: Up arrow key
: Down arrow key
: Left/Right arrow keys
~ : Enters numeric values for various parameters
: Decimal point
: Cancels the current action and returns to the previous menu
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Rear Panel Overview
The models 2380-500-15/2380J-500-15/2380-120-60/2380J-120-60
rear panel interface is shown in the next figure:
Rear panel description:
No. Description No. Description
1 Cooling fan 2 RS232 interface
3 USB interface 4 GPIB interface
5 AC socket (fuse inside) 6 Line voltage selector
7 I-monitor interface 8 Remote sense
terminals, external
trigger and
programming input
terminals
9 Protective ground
terminal
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Unpack and inspect the instrument
To unpack and inspect the instrument:
1. Inspect the box for damage.
2. Open the top of the box.
3. Remove the bag that contains the documentation, standard
accessories, and CD-ROM.
4. Remove the packaging inserts.
5. Remove the instrument from the box.
Do not lift the programmable DC electronic load from the front
bezel. Lifting the instrument by the terminal blocks of front bezel
can cause instrument damage.
6. Inspect the instrument for any obvious signs of physical damage.
Report any damage to the shipping agent immediately.
You should receive one of the following instruments: Model 2380-
500-15/2380J-500-15/2380-120-60/2380J-120-60 with the following
accessories and documentation:
Refer to the packing list which comes with the shipment for
additional items that are shipped with your instrument.
No Part Number Description
1 CO-XX/161-XXXX-XX Power line cord
2 063456100 Programmable DC Electronic
Load Product Information CD-
ROM
3 001165500 Calibration Certificate
4 174684100 USB cable
5 PA-935 Environmental Disclosure
Statement (Instrument/System)
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CD-ROM contents
The CD ROM that is shipped with the instrument contains PDFs of
the User Manual, Quick Start Guide, and accessory manuals. For
additional support information, visit
http://www.keithley.com/support.t.

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Connect the instrument
Important test system safety information
This product is sold as a stand-alone instrument that may become
part of a system that could contain hazardous voltages and energy
sources. It is the responsibility of the test system designer, integrator,
installer, maintenance personnel, or service personnel to make sure
the system is safe during use and is operating properly.
It is important that you consider the following factors in your system
design and use:
The international safety standard IEC 61010-1 defines voltages as
hazardous if they exceed 30 VRMS and 42.4 V peak, or 60 V DC
for equipment rated for dry locations. Keithley Instruments
products are only rated for dry locations.
Read and comply with the specifications of all instruments in the
system. The overall allowed signal levels may be constrained by
the lowest rated instrument in the system. For example, if you are
using a 500 V power supply with a 300 V DC rated switch, the
maximum allowed voltage in the system is 300 V DC.
Make sure any test fixture connected to the system protects the
operator from contact with hazardous voltages, hot surfaces, and
sharp objects. Use shields, barriers, insulation, and safety
interlocks to accomplish this.
Cover the DUT to protect the operator from flying debris in the
event of a system or DUT failure.
Double-insulate all electrical connections that an operator can
touch. Double insulation ensures the operator is still protected
even if one insulation layer fails. Refer to IEC 61010-1 for
specific requirements.
Make sure all connections are behind a locked cabinet door or
other barrier. This protects the system operator from accidentally
removing a connection by hand and exposing hazardous voltages.
Use high-reliability fail-safe interlock switches to disconnect
power sources when a test fixture cover is opened.
Where possible, use automatic handlers so operators are not
required to access the DUT or other potentially hazardous areas.
Provide training to all users of the system so they understand all
potential hazards and know how to protect themselves from injury.
To keep users safe, always read and follow all safety warnings
provided with each of the instruments in your system.
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Install the instrument
You can use a Model 2380-500-15/2380J-500-15/2380-120-
60/2380J-120-60 instrument on a bench or in a rack. Please see the
instructions that came with your rack-mount kit if you are installing
the programmable DC electronic load in a rack.
To prevent damaging heat build-up and ensure specified performance,
make sure there is adequate ventilation and air flow around the
instrument to ensure proper cooling. Do not cover the ventilation
holes on the top, sides, or bottom of the instrument.
Make sure the instrument is positioned so that it is easy to reach any
disconnecting devices, such as the power cord and the power switch.
Power up the instrument
The Model 2380-500-15/2380J-500-15/2380-120-60/2380J-120-60
instrument operate at 100 V, 115 V, 220 V, or 230 V with a
frequency of 50 Hz or 60 Hz. Make sure that the AC line voltage
indicator in the center of the rear-panel power module matches the
AC line voltage in your facility as shown in the next figure.
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The power cord supplied with 2380-500-15/2380J-500-15/2380-120-
60/2380J-120-60 contains a separate protective earth (safety ground)
wire for use with grounded outlets. When proper connections are
made, the instrument chassis is connected to power-line ground
through the ground wire in the power cord. In addition, a redundant
protective earth connection is provided through a screw on the rear
panel. This terminal should be connected to a known protective
earth. In the event of a failure, not using a properly grounded
protective earth and grounded outlet may result in personal injury or
death due to electric shock.
Do not replace detachable mains supply cords with inadequately
rated cords. Failure to use properly rated cords may result in
personal injury or death due to electric shock.
To connect line power:
1. Turn POWER OFF (use front panel power switch).
2. Move the line voltage selector, on the rear panel, to the correct
voltage level (230 V or 115 V).
3. Connect the power cord to the AC socket on the rear panel.
Operating the instrument on an incorrect line voltage may cause
damage to the instrument, possibly voiding the warranty.
4. Connect the other end of the power cord to a grounded AC
outlet.
5. Turn POWER ON (use the front panel). The instrument is
powered up.
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Connections for testing
Before making the connections, prepare the wires as described in the
next table.
Connection Specifications
Front panel input terminals 20 AWG to 12 AWG
Sense terminals
The wire must be heavy enough not to overheat while carrying
the short-circuit input current of the unit. Make sure to meet the
wiring requirements described above.
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Two-wire connection
Two-wire connection is used for basic operations when maximum
precision is not required. Keep the wire as short as possible to reduce
wire resistance. If you want higher measurement precision, use four-
wire remote sense connection.
To connect the DUT to the load using a two-wire
connection:
1Unscrew the two nuts and remove the two protective covers, as
shown in the next figure.
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2Connect the cables to the two input terminals, as shown in next
figure.
3Mount the protective covers to the two input terminals.
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4Screw the two input terminals tight, as shown in the next figure. 5Connect the other end of the cables to the DUT. The red cable is
connected to the positive electrode and the black cable is
connected to the negative electrode.
Failure to install the protective cover may result in personal injury or
death due to electric shock.
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Four-wire remote sense connection
You can use four-wire remote sense connections for higher
measurement precision.
To connect the DUT to the load using a four-wire remote
sense connection:
1Unscrew the two nuts and remove the two protective covers.
2Connect the cables to the two input terminals.
3Mount the protective covers to the two input terminals.
4Screw the two input terminals tight.
5Connect the other end of the cables to the DUT. The red cable is
connected to the positive electrode and the black cable is
connected to the negative electrode.
6Connect the DUT to the remote sense terminals on the rear
panels, as shown in the next wiring diagram.
Steps1 through 5 above are the same as the steps for two-wire
connection. For the illustrations of the steps, see Two-wire
connection.
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Front-panel user interface overview
The front-panel user interface gives you quick access to measurement
settings, system configuration, instrument status, and other
instrument functionality.
Home screen overview
When you turn on the instrument, you will see the home screen, as
shown in the next figure.
The top row on the home screen displays the actual input voltage and
current values.
The second row on the home screen displays the actual power value
and the current (voltage, power, resistance) setting values.
Menu screen overview
When you press + on the front panel, the SYSTEM
MENU screen is displayed.
The following options are displayed on the VFD: Initialize, Power-
ON, Buzzer, Knob, Trigger, Display, Communication, and Protocol.
Select an option by pressing , and configure the parameters.
When you press + on the front panel, the CONFIG
MENU screen is displayed.
The following options are displayed on the VFD: Von, Protect,
Measure, CR-LED, Remote-Sense, and Ext-Program.
Select an option by pressing , and configure the parameters.
0.000V 0.000A
0.00W CC=0.000A
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Select a measure function
The programmable DC electronic load allows you to perform the
following measure functions.
Measure functions What the instrument measures
Short function Simulate a short circuit with an input
Transient mode Conduct a dynamic response time test for a
power supply
OCP Function Conduct an automatic test for OCP conditions
OPP Function Conduct an automatic test for OPP conditions
Battery mode Conduct a battery capacity test by sinking a
fixed current load
CR-LED mode Conduct an output current test for an LED
power supply
Measure mode Conduct a rising/falling time test for a power
supply or a fuse melting time test.
Autotest function Conduct an automatic test with various modes
Front panel key combinations for measurement functions are as
follows:
+（Short）: Enable/Disable short function.
+（Tran）: Configure transient parameters
+（List）: Configure list parameters
+（Battery）: Configure battery test parameters.
+（Program）: Configure autotest parameters.
+（OCP Test）: Configure OCP parameters
+（Setup）: Configure maximum voltage/current
range for each function
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+（OPP Test）: Configure OPP parameters
Specify a measurement range
You can set value ranges for measurements or allow the instrument
to choose the ranges automatically.
The measurement range determines the input during the
measurement, and also affects the precision of the measurements and
the maximum signal that can be measured.
You can specify the current range and voltage range for the
programmable DC electronic load. The ranges are listed in the next
table.
To set the ranges for CC/CV/CR/CP mode from the
front panel :
1. Press the CC/CV/CR/CP key.
2. Press + .
3. Set the range of each parameter according to the following table.
4. Press .
See the "Constant-status operation mode" section of the User
Manual for additional details and the specific parameters
configuration.
Model number Current measurement
range
Voltage
measurement
range
2380-500-15/
2380J-500-15 3 ~ 15 A 50 ~ 500 V
2380-120-60/
2380J-120-60
6 ~ 60 A 18 ~ 120 V
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