Agilent Technologies
System DC Power Supply
Series N5700
User’s Guide
A
Do Not Operate in an Explosive
Atmosphere
Do not operate the instrument in the
presence of flammable gases or fumes.
Safety Symbols
Safety Notices
Direct current
The following general safety precautions
must be observed during all phases of
operation of this instrument. Failure to
comply with these precautions or with
specific warnings or instructions
elsewhere in this manual violates safety
standards of design, manufacture, and
intended use of the instrument. Agilent
Technologies assumes no liability for the
customer's failure to comply with these
requirements.
Alternating current
Do Not Remove the Instrument
Cover
Only qualified, service-trained personnel
who are aware of the hazards involved
should remove instrument covers. Always
disconnect the power cable and any
external circuits before removing the
instrument cover.
Both direct and alternating
current
Three phase alternating
current
Earth (ground) terminal
Protective earth ground
terminal.
General
Do Not Modify the Instrument
Frame or chassis terminal
Do not use this product in any manner
not specified by the manufacturer. The
protective features of this product may be
impaired if it is used in a manner not
specified in the operation instructions.
Do not install substitute parts or perform
any unauthorized modification to the
product. Return the product to an Agilent
Sales and Service Office for service and
repair to ensure that safety features are
maintained.
Terminal is at earth
potential.
Neutral conductor on
permanently installed
equipment
Before Applying Power
Verify that all safety precautions are
taken. Make all connections to the unit
before applying power. Note the
instrument's external markings described
under "Safety Symbols"
In Case of Damage
Line conductor on
permanently installed
equipment.
Instruments that appear damaged or
defective should be made inoperative and
secured against unintended operation
until they can be repaired by qualified
service personnel.
On supply
Off supply
Ground the Instrument
This product is a Safety Class 1
CAUTION
instrument (provided with a protective
earth terminal). To minimize shock
hazard, the instrument chassis and cover
must be connected to an electrical
ground. The instrument must be
connected to the ac power mains through
a grounded power cable, with the ground
wire firmly connected to an electrical
ground (safety ground) at the power
outlet. Any interruption of the protective
(grounding) conductor or disconnection of
the protective earth terminal will cause a
potential shock hazard that could result in
personal injury.
Standby supply. Unit is not
completely disconnected from
ac mains when switch is off
A CAUTION notice denotes a hazard.
It calls attention to an operating
procedure, practice, or the like that, if
not correctly performed or adhered to,
could result in damage to the product
or loss of important data. Do not
proceed beyond a CAUTION notice
until the indicated conditions are fully
understood and met.
In position of a bi-stable push
switch
Out position of a bi-stable
push switch
Caution, risk of electric shock
Caution, hot surface
WARNING
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or the
like that, if not correctly performed
or adhered to, could result in
personal injury or death. Do not
proceed beyond a WARNING notice
until the indicated conditions are
fully understood and met.
Fuses
For continued protection against fire,
replace the line fuse only with a fuse of
the specified type and rating (normal
blow, time delay, etc.). Do not use
repaired fuses or short-circuited
fuseholders. To do so could cause a
shock or fire hazard.
Caution, refer to
accompanying
documents
Series N5700 User’s Guide
3
In This Book
This User’s Manual contains the operating instructions, installation
instructions, and specifications of the Agilent Technologies Series
N5700 750W and 1500W System DC Power Supplies. Specific
chapters in this manual contain the following information:
ꢀ
ꢀ
ꢀ
Quick Reference – Chapter 1 is a quick reference section that
helps you quickly become familiar with your Agilent N5700
power supply.
Installation – Chapter 2 describes how to install your power
supply. It describes how to connect various loads to the output. It
discusses remote sensing as well as parallel and series operation.
Operating the Power Supply Locally – Chapter 3 describes how to
operate the power supply from the front panel and from the
analog connector on the rear panel. It also includes a turn-on
check-out procedure to verify the unit is operating properly.
ꢀ
Operating the Power Supply Remotely – Chapter 4 describes how
to configure the remote interfaces. It also gives a brief overview
of the SCPI command structure and basic programming concepts.
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Language Reference – Chapter 5 describes all of the SCPI
programming commands.
Programming Examples – Chapter 6 provides Visual BASIC
example programs that illustrate some common applications.
Specifications – Appendix A describes specifications and
supplemental characteristics.
Verification and Calibration Procedures – Appendix B explains
the verification and calibration procedures.
Service – Appendix C describes what to do if your unit requires
service.
Compatibility – Appendix D documents the compatibility
commands of the Agilent 603xA power supplies that are
supported by the Agilent N5700 power supplies.
You can contact Agilent Technologies at one of the following telephone
numbers for warranty, service, or technical support information.
In the United States: (800) 829-4444
NOTE
In Europe: 31 20 547 2111
In Japan: 0120-421-345
Or use our Web link for information on contacting Agilent in your country or
specific location: www.agilent.com/find/assist
Or contact your Agilent Technologies Representative.
The web contains the most up to date version of the manual. Go to
4
Series N5700 User’s Guide
Contents
1 Quick Reference 7
The Agilent N5700 DC Power Supplies – At a Glance 8
The Front Panel - At a Glance 10
The Rear Panel – At a Glance 12
SCPI Programming Commands – At a Glance. 15
2 Installation
17
General Information 18
Inspecting the Unit 19
Installing the Unit 19
Connecting the Line Cord 21
Connecting the Load23
Output Voltage Sensing 26
Load Considerations 28
Parallel Connections30
Series Connections 32
J1 Connector Connections 34
3 Operating the Power Supply Locally
Turn-On Check-Out 36
Normal Operation 38
35
Protection Functions39
Output On/Off Control 42
Analog Programming of Output Voltage and Current 44
4 Operating the Power supply Remotely
49
Configuring the Interface50
SCPI Commands – an Introduction 59
5 Language Reference
65
Calibration Commands 66
Measure Commands67
Output Commands68
Source Commands69
Status Commands 71
System Commands 77
Trigger Commands 79
Series N5700 User’s Guide
5
6 Programming Examples 81
Output Programming Example 82
Trigger Programming Example 83
A Specifications 85
Performance Specifications 86
Supplemental Characteristics 87
Outline Diagram 89
B Verification and Calibration
91
Verification 92
Calibration 111
C Service 113
Types of Service Available 114
Repackaging for Shipment 114
Operating Checklist 114
Error Messages 116
D Compatibility 121
Differences – In General 122
Compatibility Command Summary 123
Index 125
6
Series N5700 User’s Guide
1
Quick Reference
The Agilent N5700 DC Power Supplies – At a Glance 8
The Front Panel - At a Glance 10
The Rear Panel – At a Glance 12
SCPI Programming Commands – At a Glance. 15
This chapter concisely describes the Agilent Technologies Series
N5700 Power Supplies.
This chapter is not meant to describe every operating feature in
detail. It is simply a quick reference guide to quickly become familiar
with the essential components of the power supply. It can also be
used as a memory jogger for experienced users to quickly find a
front/rear panel function or programming command.
Series N5700 User’s Guide
7
The Agilent N5700 DC Power Supplies – At a Glance
The Agilent N5700 DC Power Supplies – At a Glance
The Agilent Technologies Series N5700 System DC Power Supplies
are general-purpose switching power supplies with a wide variety of
output voltage and current ratings.
These power supplies are power-factor corrected and operate from a
worldwide AC voltage range. Output voltage and current are
continuously displayed and LED indicators show the complete
operating status of the power supply.
The front panel controls allow the user to set the output parameters,
over-voltage, under-voltage, and over-current protection levels, and
preview the settings.
The rear panel includes the necessary connectors to control and
monitor the power supply operation by analog signals or by the built-
in remote communication interfaces.
Output Features
•
•
•
•
Constant voltage/constant current with automatic crossover.
High-resolution voltage and current front panel controls.
Accurate voltage and current readback.
Independent edge-triggered external shut-off, and level-
triggered external enable/disable.
•
•
•
Parallel master/slave operation with active current sharing.
Remote sensing to compensate for voltage drop in load leads.
Analog output programming and monitoring.
System Features
•
•
Built-in GBIB/LAN/USB interface.
A built-in Web server that lets you control the instrument
directly from an internet browser on your computer.
•
Zero-gap stacking - no ventilation holes at the top and bottom
surface of the power supply.
•
•
Universal input voltage with active power factor correction.
Fan speed control for low noise and extended fan life.
8
Series N5700 User’s Guide
The Agilent N5700 DC Power Supplies – At a Glance
Programmable Functions
•
•
•
•
•
•
•
•
•
•
•
Output voltage and current setting.
Output voltage and current measurement.
Output voltage and current trigger setting.
Output On/Off control.
Over-current protection setting.
Over-voltage protection setting and readback.
Under-voltage limit setting and readback.
Start-up mode (either last setting or reset mode)
Status register setting and readback.
Bus trigger
Calibration
Model Ratings
Model
Voltage
Range
Current
Range
Model
Voltage
Range
Current
Range
N5741A
N5742A
N5743A
N5744A
N5745A
N5746A
N5747A
N5748A
N5749A
N5750A
N5751A
N5752A
0 – 6V
0 – 100A
0 – 90A
0 – 60A
0 – 38A
0 – 25A
0 – 19A
0 – 12.5A
0 – 9.5A
0 – 7.5A
0 – 5A
N5761A
N5762A
N5763A
N5764A
N5765A
N5766A
N5767A
N5768A
N5769A
N5770A
N5771A
N5772A
0 – 6V
0 – 180A
0 – 165A
0 – 120A
0 – 76A
0 – 50A
0 – 38A
0 – 25A
0 – 19A
0 – 15A
0 – 10A
0 – 5A
0 – 8V
0 – 8V
0 – 12.5V
0 – 20V
0 – 30V
0 – 40V
0 – 60V
0 – 80V
0 – 100V
0 – 150V
0 – 300V
0 – 600V
0 – 12.5V
0 – 20V
0 – 30V
0 – 40V
0 – 60V
0 – 80V
0 – 100V
0 – 150V
0 – 300V
0 – 600V
0 – 2.5A
0 – 1.3A
0 – 2.5A
Series N5700 User’s Guide
9
The Front Panel - At a Glance
The Front Panel - At a Glance
3
6
2
4
5
1
DC VOLTS
DC AMPS
VOLTAGE
CV
CURRENT
CC
OVP
UVL
LIMIT/
OCP
REM OUT ON
PROT
FINE
POWER
19
16
15
14
11
7
13
9
18
8
17
10
12
1 – VOLTAGE knob
Voltage function: Adjusts the output voltage, the over-voltage protection level,
and the under-voltage limit. If over-voltage protection or under-voltage limits have
been set, you cannot program the output voltage outside those limits.
GPIB address: Selects the GPIB address when REM is pressed and held.
2 – CV indicator
When lit, indicates that the unit is operating in constant voltage mode – with the
output voltage being held constant.
3 – DC VOLTS display
LED display that normally displays the voltage measured at the sense terminals.
When LIMIT is pressed, the display indicates the programmed voltage setting.
When OVP/UVL is pressed, the display indicates either the OVP or UVL setting.
When REM is pressed and held, the display indicates the GPIB address.
4 – DC AMPS display
5 – CC indicator
LED display that normally displays the current measured at the output terminals.
When LIMIT is pressed, the display indicates the programmed current setting.
When lit, indicates that the unit is operating in constant current mode – with the
output current being held constant.
6 – CURRENT knob
7 – OUT ON button
Adjusts the output current.
Output function: Press OUT ON to turn the output on or off. Press OUT ON to
reset and turn the output on after an OVP or OCP event has occurred.
Start-up function: Selects between Safe-Start and Auto-Restart modes. Press and
hold the OUT ON button to toggle between Safe-Start and Auto-Restart. The
display cycles between SAF and AU7. Releasing the OUT ON button while one of
the modes is displayed selects that mode.
8 – OUT ON indicator
When lit, indicates that the output is enabled or on.
10
Series N5700 User’s Guide
The Front Panel - At a Glance
9 – REM button
Mode function: Press REM to put the unit into local mode. (This button can be
disabled with a Local Lockout command).
Address function: Selects the GPIB address. Press and hold the REM button for
three seconds to set the address with the Voltage knob.
10 – REM indicator
11 – OCP button
When lit, indicates that the unit is in Remote mode.
Enable function: Press OCP to turn over-current protection on. Press OCP again to
turn over-current protection off.
Reset OCP: When an over-current protection event occurs, press the OUT ON
button to enable the output and re-arm over-current protection.
12 – OCP indicator
When lit, indicates that over-current protection is enabled or on.
13 – OVP/UVL button
OVP function: Press OVP/UVL once to set the over-voltage protection level with
the Voltage knob (the display shows OUP). You cannot set the over-voltage
protection lower than about 5% above the present output voltage setting.
UVL function: Press OVP/UVL twice to set the under-voltage programming limit
with the Voltage knob (the display shows UUL). You cannot set the under-voltage
protection higher than about 5% below the present output voltage setting.
14 – LIMIT button
Limit function: Press LIMIT to display the output voltage and current limit. For five
seconds the display shows the settings and then it returns to show the actual
output voltage and current.
Lock function: Press and hold the LIMIT button to toggle between Locked front
panel and Unlocked front panel. The display will cycle between LFP and UFP.
Releasing the LIMIT button while one of the modes is displayed selects that
mode.
15 – LIMIT indicator
16 – FINE button
When lit, indicates that the LIMIT button is pressed.
Selects Fine or Coarse adjustment control. In Fine mode, the Voltage and Current
knobs operate with high resolution; in Coarse mode, with lower resolution
(approximately six turns).
17 – FINE indicator
18 – PROT indicator
When lit, indicates that the unit is in Fine adjustment mode.
When blinking, indicates that a fault has occurred.
OVP, OCP, OTP, Enable fail, and AC fail detection will cause the PROT indicator to
blink. The PROT indicator may blink and the display indicate AC for a few seconds
after the unit is turned off because of residual energy inside the unit.
19 – POWER switch
Turns the power supply on or off.
Series N5700 User’s Guide
11
The Rear Panel – At a Glance
The Rear Panel – At a Glance
8
9
10/100 Ethernet
!
!
LINK
TX
+V
-V
GPIB
J1
SW1
ON
J2
OFF
ANALOG PROGRAMMING
1 2 3 4 5 6 7 8 9
+S+LS NC -LC-S
NOT ACTIVE
AC INPUT
80V - 600V
750W
2
1
7
6
3
5
4
6V - 60V
1500W
1 – AC input connector
2 – DC output connector
Wire clamp connector for 1500W output models.
IEC connector for 750W output models.
Wire clamp connector for 80V to 600V models.
Bus bars for 6V to 60V models.
3 – USB connector
4 – LAN connector
Connector for connecting to a USB interface. See chapter 4 for setup.
Connector for connecting to a LAN interface. LINK LED indicates link integrity.
TX LED indicates LAN activity. See chapter 4 for LAN setup.
5 – Analog Programming
connector
Connector for the analog interface. Includes output voltage and current limit
programming and monitoring signals, Shut-Off control (electrical signal),
Enable/Disable control (dry-contact), power supply ok (Power Supply OK) signal
and operation mode (CV/CC) signal. (See next page for details)
6 – SW1 setup switch
Nine-position switch for selecting remote programming and monitoring modes
for Output Voltage, Current Limit and other control functions. (See next page for
details)
7 – Remote Sense connector Connector for making remote sensing connections for regulating the load
voltage and compensating for wiring voltage drop. (See next page for details)
8 – GPIB connector
9 – Ground screw
Connector for connecting to a GPIB interface. See chapter 4 for setup.
M4x8 screws for making chassis ground connections
SHOCK HAZARD The power cord provides a chassis ground through a third
conductor. Be certain that your power outlet is of the three-conductor type
with the correct pin connected to earth ground
WARNING
12
Series N5700 User’s Guide
The Rear Panel – At a Glance
J2 Sense Connector
1 – Remote sense (+)
2 – Local sense (+)
3 – Not used
4 – Local sense (–)
5 – Remote sense (–)
The factory-shipped configuration is shown in the figure.
SW1 Setup Switch
9
8
7
6
5
4
3
2
1
The factory-shipped setting is Down for all switches.
1 – Output voltage, voltage
programming
Down: The output voltage is programmed by the front panel.
Up:
The output voltage is programmed by the external voltage signal.
2 – Output current, voltage
programming
Down: The output current is programmed by the front panel.
Up: The output current is programmed by the external voltage signal.
3 – Programming range
(voltage/resistance)
Down: The remote programming range is: 0 – 5V / 0 – 5KΩ.
Up: The remote programming range is: 0 – 10V / 0 – 10KΩ.
4 – Voltage and Current
monitoring range
Down: The remote monitoring range is: 0 – 5V.
Up: The remote programming range is: 0 – 10V.
5 – Shut-Off Logic Select
Down: OUT OFF = Low (0 – 0.6V) or short; OUT ON = High (2V – 15V) or open.
Up: OUT OFF = High (2V – 15V) or open; OUT ON = Low (0 – 0.6V) or short.
6 – Not Used
7 – Output voltage, resistive Down: The output voltage is programmed by the front panel.
programming Up: The output voltage is programmed by the external resistor.
8 – Output current, resistive Down: The output current is programmed by the front panel.
programming
Up:
The output current is programmed by the external resistor.
9 – Enable/Disable control
Down: The J1 Enable+/Enable– pins are not active.
Up: The J1 Enable+/Enable– pins are active.
Series N5700 User’s Guide
13
The Rear Panel – At a Glance
J1 Analog Programming Connector
Current Program
Voltage Program
Local / Analog
Voltage Monitor
Common (-S)
CV / CC
Chassis Common
Chassis Common
Enable +
13
25
12
24
11
23
10
22
9
8
7
6
5
4
3
2
1
21
20
19
18
17
16
15
14
Parallel
Enable --
Current Monitor
Current Prog. Return
Voltage Prog. Return
Local / Analog State
Shut Off
Power Supply OK
The factory-shipped default configuration is Local operation, which
does not require connection to J1.
Pin 1:
Enable +
Connect Pin 1 to Pin 14 to enable the output. Disconnect to disable the output.
Signal return for Pin 15 and Pin 16. Connected to chassis.
No connection
Pin 2, 3:
Pin 4–7:
Pin 8:
Chassis Common
Not Used
Local/Analog
Voltage Program
Current Program
Voltage Monitor
Common
Input for selecting between front panel or analog programming of the output.
Input for voltage or resistance programming of the output voltage.
Input for voltage or resistance programming of the output current.
Output for monitoring the output voltage.
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
Pin 15:
Pin 16:
Signal return for Pin 8, Pin11, Pin 13, and Pin 24. Connected internally to –S.
Output for constant voltage/constant current mode indication.
Connect Pin 14 to Pin 1 to enable the output. Disconnect to disable the output.
Input for Shut-Off control of the output. Referenced to Chassis Common.
Output to indicate the power supply status. Referenced to Chassis Common.
No connection
CV/CC
Enable –
Shut Off
Power Supply OK
Pin 17–20: Not Used
Pin 21:
Pin 22:
Pin 23:
Pin 24:
Pin 25:
Local/Analog State
Output for indication of local or analog programming mode.
Signal return for Pin 9. Connected internally to –S.
Voltage Prog. Return
Current Prog. Return
Current Monitor
Parallel
Signal return for Pin 10. Connected internally to –S.
Output for monitoring the output current.
Output for current balancing in parallel operation.
14
Series N5700 User’s Guide
SCPI Programming Commands – At a Glance.
SCPI Programming Commands – At a Glance.
Some [optional] commands have been included for clarity. Chapter 6 contains a
complete description of all programming commands.
NOTE
Subsystem Commands.
SCPI Command
Description
ABORt
Aborts the triggered action
CALibrate
:CURRent[:LEVel]
:DATA <NRf>
:DATE “<date>”
:LEVel P1 | P2
:PASSword <NRf>
:STATE <Bool> [,<NRf>]
:VOLTage[:LEVel]
Calibrates the output current programming
Enters the calibration value
Sets the calibration date
Advances to the next calibration step
Sets the numeric calibration password
Enables/disables calibration mode
Calibrates the output voltage programming
INITiate
[:IMMediate][:TRANsient]
Initiates the trigger system
:CONTinuous[:TRANsient]
Enables/disables continuous triggers
MEASure
[:SCALar]
:CURRent[:DC]?
:VOLTage[:DC]?
Returns the measured output current
Returns the measured output voltage
OUTPut
[:STATe] <Bool>
:PON
:STATe RST | AUTO
:PROTection
:CLEar
Enables/disables the specified output
Programs the Power-On State
Resets latched protection
[SOURce:]
CURRent
[:LEVel]
[:IMMediate][:AMPLitude] <NRf+>
:TRIGgered[:AMPLitude] <NRf+>
:PROTection
:STATe <Bool>
VOLTage
[:LEVel]
Sets the output current
Sets the triggered output current
Enables/disables over-current protection
[:IMMediate][:AMPLitude] <NRf+>
:TRIGgered[:AMPLitude] <NRf+>
Sets the output voltage
Sets the triggered output voltage
:LIMit
:LOW <NRf+>
:PROTection
Sets the low-voltage limit
[:LEVel] <NRf+>
Sets the over-voltage protection level
Series N5700 User’s Guide
15
SCPI Programming Commands – At a Glance.
SCPI Command
Description
STATus
:OPERation
[:EVENt]?
:CONDition?
:ENABle <NRf>
:NTRansition<NRf>
:PTRansition<NRf>
:PRESet
Returns the value of the operation event register
Returns the value of the operation condition register
Enables specific bits in the Event register
Sets the Negative transition filter
Sets the Positive transition filter
Presets all enable and transition registers to power-on
:QUEStionable
[:EVENt]?
Returns the value of the questionable event register
Returns the value of the questionable condition register
Enables specific bits in the Event register
Sets the Negative transition filter
:CONDition?
:ENABle <NRf>
:NTRansition<NRf>
:PTRansition<NRf>
Sets the Positive transition filter
SYSTem
:COMMunicate
:RLSTate LOCal | REMote | RWLock
:ERRor?
Specifies the Remote/Local state of the instrument
Returns the error number and error string
Returns the SCPI version number
:VERSion?
TRIGger
:SOURce BUS
[:TRANsient][:IMMediate]
Sets the measurement trigger source
Generates a transient trigger
Common Commands
Command
Description
*CLS
Clear status
*ESE <NRf>
*ESE?
*ESR?
*IDN?
*OPC
*OPC?
*OPT?
Standard event status enable
Return standard event status enable
Return event status register
Return instrument identification
Enable "operation complete" bit in ESR
Return a "1" when operation complete
Return option number
*RCL <NRf>
*RST
*SAV <NRf>
*SRE <NRf>
*SRE?
Recalls a saved instrument state
Reset
Saves an instrument state
Set service request enable register
Return service request enable register
Return status byte
*STB?
*TRG
*TST
*WAI
Trigger
Performs self-test, then returns result
Holds off bus until all device commands done
16
Series N5700 User’s Guide
2
Installation
General Information 18
Inspecting the Unit 19
Installing the Unit 19
Connecting the Line Cord 21
Connecting the Load23
Output Voltage Sensing 26
Load Considerations 28
Parallel Connections30
Series Connections 32
J1 Connector Connections 34
This chapter describes how to install your power supply. It discusses
installation, rack mounting, and line cord connections.
This chapter also discusses how to connect your load to the output
terminals. It discusses what you need to know about wire sizes and
how to compensate for voltage drops in the load leads. It also
discusses various loads configurations and how to connect units in
series and parallel.
Before getting started, check the list under “Items Supplied” and
verify that you have received these items with your instrument. If
anything is missing, please contact your nearest Agilent Sales and
Service Office.
Series N5700 User’s Guide
17
General Information
General Information
Models
750 W Models
1500 W Models
N5741A – N5749A
N5750A – N5752A
N5761A – N5769A
N5770A – N5772A
Options
Option
Description
Description
Accessories
Item
N5740A
Rack-mount Slide Kit for installing in system II style cabinets
Items Supplied
Item
Description
Power Cord
A power cord appropriate for your location.
750W units are supplied with terminated power cords
1500W units are supplied with unterminated power cords
Sense Connector
Analog connector
A 5-pin connector for local/remote sense connections
A DB25 subminiature connector plug for analog control
connections
Shield assembly
A safety shield for the output terminal connections
Strain relief assembly
A strain relief assembly for unterminated power cords
(only provided for 1500W units)
Documentation Set
Contains User’s Guide and CD-ROM
CD-ROM contains Agilent I/O library, Setup utility,
GPIB/LAN/USB Interfaces Connectivity Guide, User’s Guide
18
Series N5700 User’s Guide
Inspecting the Unit
Inspecting the Unit
Installing the Unit
When you receive your power supply, inspect it for any obvious
damage that may have occurred during shipment. If there is damage,
notify the shipping carrier and nearest Agilent Sales and Service
Office immediately. Refer to Appendix C for more information.
Until you have checked out the power supply, save the shipping
carton and packing materials in case the unit has to be returned.
Safety Considerations
This power supply is a Safety Class 1 instrument, which means it has
a protective earth terminal. That terminal must be connected to
earth ground through power source equipped with a ground
receptacle. Refer to the Safety Summary page at the beginning of this
guide for general safety information. Before installation or
operation, check the power supply and review this guide for safety
warnings and instructions. Safety warnings for specific procedures
are located at appropriate places throughout this Guide.
Environment
Do not operate the instrument in the presence of flammable gasses or fumes
WARNING
The environmental conditions, dimensions of the instrument, as well
as an outline diagram are given in Appendix A. Basically, the
instrument should only be operated indoors in a controlled
environment. Do not operate the power supply in an area where the
ambient temperature exceeds 40° C.
Agilent N5700 power supplies generate magnetic fields, which may affect the
operation of other instruments. If your equipment is susceptible to magnetic
fields, do not position it adjacent to the power supply.
NOTE
Airflow
Fans cool the power supply by drawing air through the front and
exhausting it out the back. The instrument must be installed in a
location that allows sufficient space of at least 10 cm (4 in) at the
front and back of the unit for adequate air circulation.
Series N5700 User’s Guide
19
Installing the Unit
Rack Installation
Ensure that the screws used to attach the rack slide kit do not penetrate more
than 6 mm into the sides of the unit.
CAUTION
Do not block the air intake at the front of the unit or the exhaust at the rear of
the unit.
The Agilent N5700 power supplies can be mounted in a standard 19-
inch rack panel or cabinet. To install the power supply in a rack:
1. Use the front panel rack-mount brackets to install the power
supply in the rack.
2. Use a support bracket to provide adequate support for the rear of
the power supply.
3. If using rack mount slides, use Agilent N5740A Rack-mount Slide
Kit to install the unit in a standard 19-inch equipment rack. Refer to
the following figure for assembly instructions. Use three #10-32 x
0.38 in (max.) screws at each side. To prevent internal damage, use
the specified screw length only.
Cleaning
SHOCK HAZARD To prevent electric shock, unplug the unit before cleaning.
WARNING
Use a dry cloth or one slightly dampened with water to clean the
external case parts. Do not attempt to clean internally.
20
Series N5700 User’s Guide
Connecting the Line Cord
Connecting the Line Cord
SHOCK HAZARD The power cord provides a chassis ground through a third
conductor. Be certain that your power outlet is of the three-conductor type
with the correct pin connected to earth ground.
WARNING
FIRE HAZARD Use only the power cord that was supplied with your
instrument. Using other types of power cords may cause overheating of the
power cord, resulting in fire.
The detachable power cord may be used as an emergency disconnecting
device. Removing the power cord will disconnect ac input power to the unit.
NOTE
The AC input on the back of your unit is a universal AC input. It
accepts line voltages in the range of 85 VAC to 265 VAC. The
frequency range is 47 Hz to 63 Hz.
The input current requirement of 750W units is 10.5A @ 100 VAC
nominal and 5A @ 200 VAC nominal. The current requirement of
1500W units is 21A @ 100 VAC nominal and 11A @ 200 VAC nominal.
Input Connections for 750W units
Connect the power cord to the IEC 320 connector on the rear of the
unit. The IEC connector provides the safety ground connection when
the AC cord is plugged into a grounded AC receptacle.
If the wrong power cord was shipped with your unit, contact your
nearest Agilent Sales and Service Office.
Input Connections for 1500W units
Connection of this power supply to an AC power source should be made by a
qualified electrician or other qualified personnel.
CAUTION
The AC input connector is a 3-terminal wire clamp located on the
rear panel. Use suitable wires and tightening torque as follows:
•
•
Wire diameter: 12 AWG or 10 AWG
Tightening torque: 6.5 - 7.0 in-lb
Connect the cable to the AC input connector as follows:
•
Strip the outside insulation of the AC cable approximately 10
cm (4 in). Trim the wires so that the ground wire is 10 mm
(0.4 in) longer than the other wires. Strip 14 mm (0.55 in) at
the end of each of the wires.
Series N5700 User’s Guide
21
Connecting the Line Cord
•
•
Unscrew the base of the strain relief from the helix-shaped
body. Insert the base through the outside opening in the AC
input cover and screw the locknut securely (11-14 in-lb) into
the base, from the inside.
Slide the helix-shaped body onto the AC cable. Insert the
stripped wires through the strain relief base until the outer
cable jacket is flush with the edge of the base. Tighten the
body (16-18 in-lb) to the base while holding the cable in
place. Now the cable is securely fastened inside the strain
relief. Refer to the following figure.
Screw-on
Locknut
•
•
Route the AC wires to the input connector terminals as
required. To connect the wires, loosen the terminal screw,
insert the stripped wire into the terminal, and tighten the
screw securely to between 4.4–5.3 in-lb.
Route the wires inside the cover to prevent pinching. Fasten
the cover to the unit using the M3 x 8 flat head screws
provided. Refer to the following figure for details.
N
L
M3x8
Flat Head Screws
(2 places)
Cover
Assembled
Strain Relief
22
Series N5700 User’s Guide
Connecting the Load
Connecting the Load
SHOCK HAZARD Turn off AC power before making rear panel connections.
All wires and straps must be properly connected with screws securely
tightened.
WARNING
As further explained in this section, the following factors should be
considered when selecting wiring to connect the load to the power
supply:
•
•
Current carrying capacity of the wire
Insulation rating of the wire should be at least equivalent to
the maximum output voltage of the power supply
•
•
Maximum wire length and voltage drop
Noise and impedance effects of the load wiring
Wire Size
FIRE HAZARD To satisfy safety requirements, select a wire size heavy
enough not to overheat while carrying the power supply load current at the
rated load, or the current that would flow in the event the load wires were
shorted, whichever is greater.
WARNING
Along with conductor temperature, you must also consider voltage
drop when selecting wire sizes. The following chart lists the
resistance for various wire sizes and also the maximum lengths to
limit the voltage drop to 1.0 volt for various currents.
Although the power supply will compensate for up to 5V in each load
wire, it is recommended to minimize the voltage drop to less than 1V
to prevent excessive output power consumption from the power
supply and poor dynamic response to load changes.
Wire size Resistance
Maximum length in feet to limit voltage to 1 V
AWG
Ω/1000 foot
for 5 A
for 10 A for 20A
for 50A for 150A
14
12
10
8
6
4
2.526
1.589
80
40
60
20
30
50
80
125
200
300
500
8
2
3.4
6
10
16
26
40
68
120
200
320
500
800
1200
2000
12
20
32
50
80
125
200
0.9994
0.6285
0.3953
0.2486
0.1564
0.0983
100
160
250
400
600
1000
2
0
Series N5700 User’s Guide
23
Connecting the Load
Cross
section
(mm2)
Resistance
Ω/kilometer
Maximum length in meters to limit voltage to 1 V
for 5 A for 10 A
for 20A
for 50A for 150A
2.5
4
6
10
16
25
35
8.21
5.09
3.39
1.95
1.24
0.795
0.565
24.0
39.2
59.0
102
160
250
354
12.0
18.6
29.4
51.2
80.0
125
6.0
9.8
2.4
4.0
5.8
10.2
16.0
25.2
35.4
0.8
1.4
2.0
3.4
5.4
8.4
11.8
14.8
25.6
40.0
62.0
88.0
177
Load Connections for 6V to 60V Models
SHOCK HAZARD Hazardous voltages may exist at the outputs and the load
connections when using a power supply with a rated output greater than 40V.
To protect personnel against accidental contact with hazardous voltages,
ensure that the load and its connections have no accessible live parts. Ensure
that the load wiring insulation rating is greater than or equal to the maximum
output voltage of the power supply.
WARNING
Ensure that the load wiring mounting hardware does not short the output
terminals. Heavy connecting cables must have some form of strain relief to
prevent loosening the connections or bending the bus-bars.
CAUTION
All load wires should be properly terminated with wire terminals
securely attached. Do not use unterminated wires for load
connections at the power supply. The following figures illustrate how
to connect the load wires to the power supply bus-bars as well as
how to mount the bus-bar shield to the chassis.
Wire terminal lug (2 places)
M8x15 screw (2 places)
Flat washer
(2 places)
Flat washer (2 places)
Spring washer (2 places)
Hex Nut (2 places)
Screws tightening torque: 104-118 in-lb.
24
Series N5700 User’s Guide
Connecting the Load
Install the shield after you have finished connecting the load wires.
Shield
Load Connections for 80V to 600V Models
SHOCK HAZARD Hazardous voltages may exist at the outputs and the load
connections when using a power supply with a rated output greater than 40V.
To protect personnel against accidental contact with hazardous voltages,
ensure that the load and its connections have no accessible live parts. Ensure
that the load wiring insulation rating is greater than or equal to the maximum
output voltage of the power supply.
WARNING
The 80V to 600V models have a four-terminal wire clamp output
connector. The two left terminals are the positive outputs and the
two right terminals are the negative outputs. The connector
specifications are as follows:
Wire Size:
Stripping Length: 10 mm (0.39 in.)
Torque: 6.5 - 7 in-lb.
AWG 18 to AWG 10
The following instructions describe how to connect the load wires to
the power supply:
•
•
Strip wires back approximately 10 mm (0.39 in).
Loosen the connector terminal screws and insert the stripped
wires into the terminal. Tighten the terminal screw securely.
-V
+V
Positive Output (+)
Negative (-)
Output/Return
Load wires
Series N5700 User’s Guide
25
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