Ametek Sorensen XT Series User manual

TM-XTOP-01XN Rev C www.programmablepower.com
XT Series
Programmable DC
Power Supply
Operation Manual

About AMETEK
AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design
and manufacture of precision, programmable power supplies for R&D, test and measurement,
process control, power bus simulation and power conditioning applications across diverse
industrial segments. From bench top supplies to rack-mounted industrial power subsystems,
AMETEK Programmable Power is the proud manufacturer of Elgar, Sorensen, California
Instruments and Power Ten brand power supplies.
AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical
devices with annualized sales of $2.5 billion. The Company has over 11,000 colleagues working
at more than 80 manufacturing facilities and more than 80 sales and service centers in the United
States and around the world.
Trademarks
AMETEK is a registered trademark of AMETEK, Inc. Sorensen is a trademark owned by AMETEK,
Inc. Other trademarks, registered trademarks, and product names are the property of their
respective owners and are used herein for identification purposes only.
Notice of Copyright
XT Series Programmable DC Power Supply Operation Manual © 2007 AMETEK Programmable
Power, Inc. All rights reserved.
Exclusion for Documentation
UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER, INC.
(“AMETEK”):
(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY
TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER
DOCUMENTATION.
(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR
EXPENSES, WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL,
WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH
INFORMATION WILL BE ENTIRELY AT THE USER’S RISK, AND
(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH,
ALTHOUGH STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE
TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED AMETEK CONTENT
IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION, WHICH IS POSTED AT
WWW.PROGRAMMABLEPOWER.COM.
Date and Revision
February 2009 Revision C
Part Number
TM-XTOP-01XN
Contact Information
Telephone: [phone] (toll free in North America)
858 450 0085 (direct)
Fax: [phone]
Email: [e-mail]
[email protected]
Web: www.programmablepower.com
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Important Safety Instructions
Before applying power to the system, verify that your product is configured properly for your
particular application.
WARNIN
G
Hazardous voltages may be present when covers are removed. Qualified
personnel must use extreme caution when servicing this equipment.
Circuit boards, test points, and output voltages also may be floating above
(below) chassis ground.
WARNIN
G
The equipment used contains ESD sensitive parts. When installing
equipment, follow ESD Safety Procedures. Electrostatic discharges might
cause damage to the equipment.
Only qualified personnel who deal with attendant hazards in power supplies, are allowed to perform
installation and servicing.
Ensure that the AC power line ground is connected properly to the Power Rack input connector or
chassis. Similarly, other power ground lines including those to application and maintenance
equipment must be grounded properly for both personnel and equipment safety.
Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any
cable.
In normal operation, the operator does not have access to hazardous voltages within the chassis.
However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO
HUMAN SAFETY may be normally generated on the output terminals. The customer/user must
ensure that the output power lines are labeled properly as to the safety hazards and that any
inadvertent contact with hazardous voltages is eliminated.
Guard against risks of electrical shock during open cover checks by not touching any portion of the
electrical circuits. Even when power is off, capacitors may retain an electrical charge. Use safety
glasses during open cover checks to avoid personal injury by any sudden component failure.
Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary
sales organizations can accept any responsibility for personnel, material or inconsequential injury,
loss or damage that results from improper use of the equipment and accessories.
SAFETY SYMBOLS
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Product Family: XT Series Programmable DC Power Supply
Warranty Period: Five Years
WARRANTY TERMS
AMETEK Programmable Power, Inc. (“AMETEK”), provides this written warranty covering the
Product stated above, and if the Buyer discovers and notifies AMETEK in writing of any defect in
material or workmanship within the applicable warranty period stated above, then AMETEK may,
at its option: repair or replace the Product; or issue a credit note for the defective Product; or
provide the Buyer with replacement parts for the Product.
The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in
accordance with the return procedure specified below. AMETEK will, at its expense, deliver the
repaired or replaced Product or parts to the Buyer. Any warranty of AMETEK will not apply if the
Buyer is in default under the Purchase Order Agreement or where the Product or any part
thereof:
• is damaged by misuse, accident, negligence or failure to maintain the same as
specified or required by AMETEK;
• is damaged by modifications, alterations or attachments thereto which are not
authorized by AMETEK;
• is installed or operated contrary to the instructions of AMETEK;
• is opened, modified or disassembled in any way without AMETEK’s consent; or
• is used in combination with items, articles or materials not authorized by AMETEK.
The Buyer may not assert any claim that the Products are not in conformity with any warranty
until the Buyer has made all payments to AMETEK provided for in the Purchase Order Agreement.
PRODUCT RETURN PROCEDURE
1. Request a Return Material Authorization (RMA) number from the repair facility (must be
done in the country in which it was purchased):
• In the USA, contact the AMETEK Repair Department prior to the return of the
product to AMETEK for repair:
Telephone: [phone], ext. 2295 or ext. 2463 (toll free North America)
858-450-0085, ext. 2295 or ext. 2463 (direct)
• Outside the United States, contact the nearest Authorized Service Center
(ASC). A full listing can be found either through your local distributor or our
website, www.programmablepower.com, by clicking Support and going to the
Service Centers tab.
2. When requesting an RMA, have the following information ready:
• Model number
• Serial number
• Description of the problem
NOTE: Unauthorized returns will not be accepted and will be returned at the shipper’s expense.
NOTE: A returned product found upon inspection by AMETEK, to be in specification is subject to
an evaluation fee and applicable freight charges.
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vii
About This Manual
This Operating Manual contains operation instructions for the XT Series of high
performance, switching, laboratory power supplies, available in several voltage
models at 60 watts. It provides information on features and specifications,
installation procedures, and basic functions testing, as well as operating procedures
for using both standard and multiple supply functions.
Who Should Use This Manual
This manual is designed for the user who is familiar with basic electrical laws,
especially as they apply to the operation of power supplies. This implies a
recognition of Constant Voltage and Constant Current operating modes and the
control of input and output power, as well as the observance of safe techniques while
calibrating, making supply connections and/or any changes in configuration.
Main Sections
Section 1 Features and Specifications Describes the power supply, lists its
features, and provides tables of specifications.
Section 2 Installation Reviews safety and inspection procedures, and provides
procedures for basic setup. Also includes directions for the testing of basic functions.
Section 3 Load Connection and Sensing Provides procedures for connecting
the load, grounding, and remote sensing.
Section 4 Operation Describes standard operation (Constant Voltage and
Constant Current), and series, parallel, and split supply operation.

viii

ix
Contents
Section 1.
Features and
Specifications
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Front Panel Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Rear Panel Connectors and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Additional Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Input Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Chassis Dimensions and Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Single Output Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Dual Output Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Triple Output Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Quad Output Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Section 2.
Installation Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Basic Setup Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Periodic Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Returning Power Supplies to the Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Return Material Authorization Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Packaging for Shipping or Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Location and Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
AC Input Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
AC Input Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Functional Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Power-on Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Voltage Mode Operation Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Current Mode Operation Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Section 3.
Load
Connection
and Sensing
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Load Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Load Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Making Load Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

x Operating Manual for XT Series Power Supply
Connecting Multiple Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Local Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Remote Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Section 4.
Operation Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Constant Voltage Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Constant Current Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Automatic Mode Crossover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Constant Power Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Using Multiple Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Connecting Multiple Supplies in Series (Voltage Mode Only). . . . . . . . . . . . . . 35
Connecting Multiple Supplies in Parallel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Split Supply Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

11
Section 1. Features and Specifications
Introduction
The XT Series of linear, regulated DC power supplies provides reliable, high
performance solutions for a broad range of laboratory, development and system
applications. The series consists of seven basic models that may be purchased as
single units or combined as dual, triple, or quadruple configurations containing any
combination of models. (See the chart below for a list of available models.)
Low output noise and ripple, excellent line and load regulation, and a wide variety
ofoptions, includinganalog, RS232standard, orIEEE-488 controlledprogramming,
make the XT Series the first choice in flexible DC power system design.
Table 1.1 60 Watt Series Models
Model Output Voltage Output Current
7-6 0-7 V 0-6 A
15-4 0-15 V 0-4 A
20-3 0-20 V 0-3 A
30-2 0-30 V 0-2 A
60-1 0-60 V 0-1 A
120-0.5 0-120 V 0-0.5 A
250-0.25 0-250 V 0-0.25 A

Features and Specifications
Features
12 Operating Manual for XT Series Power Supply
Features
• The power supply delivers simultaneous digital displays for both voltage and
current,and bargraphdisplays formonitoringtransient changes,which givesthe
user the benefit of continuous, up-to-date information.
• Ten-turn voltage control permits high resolution setting of the output voltage.
• Current limit is fully adjustable from zero to the rated output with a single turn
control.
• The automatic crossover system allows the power supply to automatically
switch operating modes into current or voltage mode.
• Impedance-switched remotesensinglets operators displaythe voltageatthe load
with no switch ambiguity.
• Multiple units can be connected in parallel or series to produce greater diversity.
• Short-circuit-proof power outlets give greater operating safety.
• These power supplies (available in single, dual, triple and quad outputs) can be
combined with one or more 300 watt series power supplies to create mixed units
that are ideal for high precision applications.
Options and Accessories
• Internal Analog Programming (APG) interface for analog signal control of
voltageandcurrent, overvoltageprotection(OVP),master/slave outputtracking,
and remote ON/OFF.
• Internal RS-232 interface for serial instrument programming using RS-232
protocol.
• Internal GPIB interface for complete remote digital programming. IEEE-488
standard.
• Optional 200-250 Vac input (Options AC220, AC230 and AC240). Standard is
115 Vac. Optional AC input cords for use in different countries.
• Ten-turn current potentiometer (Option M11). Rack mount kit (Option RM).
• Locking voltage and/or current adjust knobs (Option M13A)
• Optional 115-230 Vac switching unit (Option M43)

Features and Specifications
Front Panel Controls
13
Front Panel Controls
See Figure 1.1 to review the controls, LEDs, and meters located on the unit’s front
panel.
Figure 1.1 Front Panel Controls
REGULATED DC POWER SUPPLY
MODE
VOLTAGE CURRENT
SENSE
POWER
P
G
S
/
D
O
V
P
OVP
ADJ
M
Shutdown LED (S/D)
(For units with APG installed.)
Voltage Mode
Indicator (Green LED)
Safety Ground
Binding Post (Green)
AC Power Switch
Positive (+) Output Binding Post (Red)
Voltage Control Knob
(10-turn standard)
OVP Shutdown (OVP)
(For units with APG installed.)
OVP Adjust Potentiometer (OVP ADJ)
(For units with APG installed.)
Digital Display of DC Output
(Volts, Amperes)
Analog Bar Graph Display
Current Limit Mode
Indicator (Red LED)
Current Limit Adjust Knob
(1-turn standard)
Positive (+) Sense
Connection (Banana Jack)
Return (−) Sense
Connection (Banana Jack)
Return (−) Output Binding
Post (Black)
Remote Programming LED (PGM)
(For units with APG installed.
See also Figure 1.2).

Features and Specifications
Rear Panel Connectors and Outputs
14 Operating Manual for XT Series Power Supply
Figure 1.2 Remote Programming Interface Indicators (For units with a digital
programming interface installed.)
Rear Panel Connectors and Outputs
See Figure 1.3 for the connectors and outputs available at the rear panel.
Figure 1.3 Rear Panel.
Remote Programming LED (REM) Shutdown LED (SRQ)
OVP Shutdown (OVP) OVP Adjust Potentiometer (OVP ADJ
)
AC Input Connector
Blank Subplate
(Replaced if a
programming option
is installed.)
Output Terminal Block

Features and Specifications
Electrical Specifications
15
Electrical Specifications
Specifications are warranted over a temperature range of 0 to 30 °C with default
localsensing. Above30 °C, derateoutput linearlytozeroat 70 °C.Specifications are
subject to change without notice.
Table 1.2 Electrical Specifications for 7.5 V to 30 V Models
Models 7-6 15-4 20-3 30-2
Output Ratings:
Output Voltage
Output Current
Output Power
0-7 V
0-6 A
42 W
0-15 V
0-4 A
60 W
0-20 V
0-3 A
60 W
0-30 V
0-2 A
60 W
Line Regulation: 1
Voltage (0.01% of Vmax + 2 mV)
Current (0.01% of Imax + 250 uA)
1. For input voltage variation over the AC input voltage range, with constant rated load.
2.7 mV
0.85 mA 3.5 mV 0.65 mA 4mV 0.55 mA 5mV 0.45 mA
Load Regulation: 2
Voltage (0.01% of Vmax + 2 mV)
Current (0.01% of Imax + 250 uA)
2. For 0 to 100% load variation, with constant nominal line voltage, over 15-minute time
duration following load step.
2.7 mV
0.85 mA 3.5 mV 0.65 mA 4mV 0.55 mA 5mV 0.45 mA
Meter Accuracy:
Voltage (1% of Vmax + 1 count)
Current (1% of Imax + 1 count) 0.08 V 0.07 A 0.25 V 0.05 A 0.3 V 0.04 A 0.4 V 0.03 A
Stability: 3
Voltage (0.02% of Vmax)
Current (0.03% of Imax)
3. Maximum drift over 8 hours with constant line, load, and temperature, after 30-minute
warm-up at current setpoint.
1.4 mV
1.8 mA 3mV 1.2 mA 4mV 0.9 mA 6mV 0.6 mA
Temperature Coefficient 4
Voltage (0.015% of Vmax/°C)
Current (0.02% of Imax/°C)
4. Change in output per °C change in ambient temperature, with constant line and load,
and after 30-minute warm-up at current setpoint.
1.05 mV
1.2 mA 2.25 mV 0.8 mA 3mV 0.6 mA 4.5 mV 0.4 mA
Front Panel Voltage:
Control Resolution
(0.02% of V max) 1.4mV 3mV 4mV 6mV

Features and Specifications
Electrical Specifications
16 Operating Manual for XT Series Power Supply
Table 1.3 Electrical Specifications for 60 V to 250 V Models
Models 60-1 120-0.5 250-0.25
Output Ratings:
Output Voltage
Output Current
Output Power
0-60 V
0-1 A
60 W
0-120 V
0-0.5 A
60 W
0-250 V
0-0.25 A
60 W
Line Regulation: 1
Voltage (0.01% of Vmax + 2 mV)
Current (0.01% of Imax + 250 uA)
1. For input voltage variation over the AC input voltage range, with constant
rated load.
8mV
0.35 mA 14 mV 0.3 mA 27 mV 0.275 mA
Load Regulation: 2
Voltage (0.01% of Vmax + 2 mV)
Current (0.01% of Imax + 250 uA)
2. For 0 to 100% load variation, with constant nominal line voltage, over
15-minute time duration following load step.
8mV
0.35 mA 14 mV 0.3 mA 27 mV 0.275 mA
Meter Accuracy:
Voltage (1% of Vmax + 1 count)
Current (1% of Imax + 1 count) 0.7 V 0.02 A 2.2 V 0.006 A 3.5 V 0.003 A
Stability: 3
Voltage (0.02% of Vmax)
Current (0.03% of Imax)
3. Maximum drift over 8 hours with constant line, load, and temperature, after
30-minute warm-up at current setpoint.
12 mV
0.3 mA 24 mV 0.15 mA 50 mV 0.075 mA
Temperature Coefficient 4
Voltage (0.015% of Vmax/°C)
Current (0.02% of Imax/°C)
4. Change in output per °C change in ambient temperature, with constant line
and load, and after 30-minute warm-up at current setpoint.
9mV
0.2 mA 18 mV 0.1 mA 37.5 mV 0.05 mA
Front Panel Voltage:
Control Resolution
(0.02% of V max) 12mV 24mV 50mV

Features and Specifications
Additional Electrical Specifications
17
Additional Electrical Specifications
Input Conditions
Electrical Characteristics
Voltage Mode Transient Response
Time <100 μs recovery to 0.05% band, for ± 50% load change in the range of 25% to 100% of
the rated load.
Time delay from power on until
output stable 1.5 s maximum
Output Noise and Ripple1
1. RMS value measured at bandwidth of 20Hz to 300kHz, at the rear panel terminals; points of
measurement are the positive (+) and return (-) output terminal screws of the output terminal
block.
<1 mVrms (voltage mode)
<2 mArms (current mode)
Output Noise and Ripple1
(250 V unit only) <5 mVrms (voltage mode) <1 mArms (current mode)
Standard AC Input Voltage 115 Vac ± 10%, 57-63 Hz
Option M1 (Factory installed) 110 Vac ± 10%, 47-63 Hz
Option AC220 220 Vac ± 10%, 47-63 Hz
Option AC230 230 Vac ± 10%, 47-63 Hz
Option AC240 240 Vac ± 10%, 47-63 Hz
AC Input Current at 115 Vac,
60 Hz Single unit: 1.2 A Dual unit: 2.4 A
Triple unit: 3.6 A
Quad unit: 4.8 A
Output Hold-up Time approx. 10 ms at nominal line (full load)
Maximum Voltage Differential
from output to safety ground ±400 Vdc
Insulation Resistance Input to chassis: >120 MΩ
Output to chassis: >120 MΩ
Isolation Voltage
(Output not to exceed ±400 Vdc
from chassis potential.)
Input to output: 1350 Vac

Features and Specifications
Environmental Specifications
18 Operating Manual for XT Series Power Supply
Environmental Specifications
Mechanical Specifications
Maximum Remote Sense Line
Drop Compensation. (Line drop
must be deducted from the supply’s
maximum output voltage.)
0.5 V/line
Operating Ambient Temperature 0 to 30 °C with default local sensing. Above
30 °C, derate output linearly to 0 at 70 °C.
Storage Temperature Range –55° to 85 °C
Humidity Range Up to 80% RH non-condensing
Operating Altitude Up to 6,500 feet (2000 m)
Storage Altitude Up to 50,000 feet (15 000 m)
Front Panel Voltage and Current
Control 10-turn voltage and 1-turn current potentiometers (10-turn current control
optional)
Front Panel Voltage Control
Resolution 0.02% of maximum voltage
Front Panel AC Input Power Switch Push ON/push OFF switch
Front Panel Voltage and Current
Meters Independent 3-digit green numeric LED display and analog bar graph displays for
current and voltage. For meter accuracy, see
Table 1.2.
AC Input Connector Type IEC 320 Connector, appropriate power cord for
destination country.
Front Panel Output Connector Three binding posts: positive (+),
negative (–), and ground.
Rear Panel Output and Sense
Connector Four terminal block.
Chassis Ground Front panel binding post and power cord safety
ground.
Cooling Convection cooled. Air enters the unit from the
bottom and lower sides and exits from the
upper sides and top.
Mounting Optional rack for mounting several units in a
standard rack. Can be combined with 300 watt
series units. See “Rack Mounting” on page 24.