Agilent Part No. 5959-3386 Printed in Malaysia
Microfiche Part No. 5959-3387 September 2004
CERTIFICATION
Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory. Agilent
Technologies further certifies that its calibration measurements are traceable to the United States National Bureau of
Standards, to the extent allowed by the Bureau's calibration facility, and to the calibration facilities of other International
Standards Organization members.
WARRANTY
This Agilent Technologies hardware product is warranted against defects in material and workmanship for a period of one
year from date of delivery. Agilent Technologies software and firmware products, which are designated by Agilent
Technologies for use with a hardware product and when properly installed on that hardware product, are warranted not to
fail to execute their programming instructions due to defects in material and workmanship for a period of 90 days from date
of delivery. During the warranty period Agilent Technologies, Inc will, at its option, either repair or replace products which
prove to be defective. Agilent Technologies does not warrant that the operation of the software, firmware, or hardware shall
be uninterrupted or error free.
For warranty service, with the exception of warranty options, this product must be returned to a service facility designated
by Agilent Technologies. Customer shall prepay shipping charges by (and shall pay all duty and taxes) for products returned
to Agilent Technologies for warranty service. Except for products returned to Customer from another country, Agilent
Technologies shall pay for return of products to Customer.
Warranty services outside the country of initial purchase are included in Agilent Technologies product price, only if
Customer pays Agilent Technologies international prices (defined as destination local currency price, or U.S. or Geneva
Export price).
If Agilent Technologies is unable, within a reasonable time to repair or replace any product to condition as warranted, the
Customer shall be entitled to a refund of the purchase price upon return of the product to Agilent Technologies.
LIMITATION OF WARRANTY
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Customer,
Customer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the environmental
specifications for the product, or improper site preparation and maintenance. NO OTHER WARRANTY IS EXPRESSED
OR IMPLIED. AGILENT TECHNOLOGIES SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
EXCLUSIVE REMEDIES
THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER'S SOLE AND EXCLUSIVE REMEDIES. AGILENT
TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
ASSISTANCE
The above statements apply only to the standard product warranty. Warranty options, extended support contracts, product
maintenance agreements and customer assistance agreements are also available. Contact your nearest Agilent
Technologies Sales and Service office for further information on Agilent Technologies’ full line of Support Programs.
2
SAFETY SUMMARY
The following general safety precautions must be observed during all phases of operation of this power module. Failure to
comply with these precautions or with specific warnings elsewhere in this guide violates safety standards of design,
manufacture, and intended use of the power module. Agilent Technologies assumes no liability for the customer's failure to
comply with these requirements.
GENERAL
When installed in a properly wired mainframe, this product is a Safety Class 1 instrument (provided with a protective earth terminal).
Any LEDs used in this product are Class 1 LEDs as per IEC 825-l.
This ISM device complies with Canadian ICES-001. Cet appareil ISM est conforme à la norme NMB-001 du Canada.
ENVIRONMENTAL CONDITIONS
With the exceptions noted, all instruments are intended for indoor use in an installation category II, pollution degree 2 environment.
They are designed to operate at a maximum relative humidity of 95% and at altitudes of up to 2000 meters. Refer to the specifications
tables for the ac mains voltage requirements and ambient operating temperature range.
BEFORE APPLYING POWER.
Verify that the power module line voltage switch is set to match the available line voltage.
GROUND THE INSTRUMENT.
To minimize shock hazard, the mainframe must be connected to an electrical ground. The mainframe must be connected to the ac power
supply mains through a three-conductor power cable, with the third 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. If
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE.
Do not operate the instrument in the presence of flammable gases or fumes.
KEEP AWAY FROM LIVE CIRCUITS.
Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made by qualified
service personnel. Do not replace components with power cable connected. Under certain conditions, dangerous voltages may exist even
with the power cable removed. To avoid injuries, always disconnect power, discharge circuits and remove external voltage sources before
touching components.
DO NOT SERVICE OR ADJUST ALONE.
Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present.
DO NOT EXCEED INPUT RATINGS.
This mainframe is equipped with a power line filter to reduce electromagnetic interference and must be connected to a properly grounded
receptacle to minimize electric shock hazard. Operation at line voltages or frequencies in excess of those stated on the line rating label
may cause leakage currents in excess of 5.0 mA peak.
SAFETY SYMBOLS.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.
Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the
instrument. Return the instrument to an
features are maintained.
Instruments that appear damaged or defective should be made inoperative and secured against unintended operation until they can be
repaired by qualified service personnel.
The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly
performed or adhered to, could result in personal injury. Do not proceed beyond a WARNING sign until the
indicated conditions are fully understood and met.
The CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the like, which, if not correctly
performed or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed
beyond a CAUTION sign until the indicated conditions are fully understood and met.
Agilent Technologies Sales and Service Office for service and repair to ensure that safety
3
SAFETY SYMBOL DEFINITIONS
Symbol Description Symbol Description
Direct current
Alternating current
Terminal f or Line conductor on permanently
installed equipment
Caution, risk of ele ctric shock
Both direct and alternating current
Three-phase alternating current
Earth (ground) t erminal
Caution, hot surface
Caution (refer to accompanying documents)
In position of a bi-stable push control
Protective eart h (ground) terminal
Out position of a bi-stable push control
Frame or chassis terminal
On (supply)
Terminal f or Neutral conduct or on
permanently installed equipment
Terminal is at earth potential
(Used for mea s urement and control
circuits designed to be operated with
one terminal at earth potential.)
Off (supply)
Standby (supply) - Units with this symbol are not
completely disconnected from ac mains when this
switch is off. To completely disconnect the unit from
ac mains, either disconnect the power cord or have a
qualified electrician install an external switch.
Herstellerbescheinigung
Diese Inform ation steht im Zusammenhang mit den Anforderungen der Ma schinenläminformationsverordnung vom 18
Januar 1991. * Schalldr uckpegel Lp <70 dB(A) * Am Arbeitsplatz * Normaler Betrieb * Nach EN 27779 ( Typprufung).
Manufacturer's Declaration
This statement is provided to comply with the requirements of t he German Sound Emissi on Directive, from 18 January
1991. * Sound Pressure Lp <70 dB(A) *At Operator Position * Normal Operation * According to EN 27779 (Type Test).
Printing History
The current edition of this guide is indicated below. Reprints of this guide containing minor corrections and updates may
have the same printing date. New editions are identified by a new printing date and, in some cases, by a new part number.
A new edition incorporates all new or corrected material since the previous edition. Changes to the guide occurring
between editions are covered by change sheets shipped with the guide.
According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014
Manufacturer’s Name and Address
Responsible Party
Agilent Technologies, Inc. Agilent Technologies (Malaysia) Sdn. Bhd
550 Clark Drive, Suite 101
Budd Lake, New Jersey 07828
USA
Declares under sole responsibility that the product as originally delivered
EMC Information ISM Group 1 Class A Emissions
Safety Information and Conforms to the following safety standards.
This DoC applies to above-listed products placed on the EU market after:
January 1, 2004
Date Bill Darcy/ Regulations Manager
For further information, please contact your local Agilent Technologies sales office, agent or distributor, or
Agilent Technologies Deutschland GmbH, Herrenberger Straβe 130, D71034 Böblingen, Germany
Alternate Manufacturing Site
Product Names
Model Numbers
Product Options
Complies with the essential requirements of the Low Voltage Directive 73/23/EEC and the EMC
Directive 89/336/EEC (including 93/68/EEC) and carries the CE Marking accordingly.
As detailed in Electromagnetic Compatibility (EMC), Certificate of Conformance Number
Assessed by: Celestica Ltd, Appointed Competent Body
Malaysia Manufacturing
Bayan Lepas Free Industrial Zone, PH III
11900 Penang,
Malaysia
a) Modular Power System Mainframe
b) Keyboard
c) dc Power Modules
a) 66000A
b) 66001A
c) 66101A; 66102A; 6103A; 66104A; 66105A; 66106A
This declaration covers all options and customized products based on the above
products.
CC/TCF/00/077 based on Technical Construction File (TCF) HPNJ4, dated
Oct. 30, 1997
Westfields House, West Avenue
Kidsgrove, Stoke-on-Trent
Straffordshire, ST7 1TL
United Kingdom
IEC 61010-1:2001 / EN 61010-1:2001
UL 1244
CSA C22.2 No. 1010.1:1992
Remote Inhibit (RI) Function Switches................................................................................................19
Display Function Switch.......................................................................................................................19
Calibration Function Switch.................................................................................................................19
Power On Function Switch...................................................................................................................19
Installing the Module in the Mainframe.....................................................................................................20
Connecting the Load...................................................................................................................................20
Series Operation......................................................................................................................................24
In Case of Trouble......................................................................................................................................29
Using the Display.......................................................................................................................................45
Changing or Entering Values...................................................................................................................45
Agilent Sales and Support Offices..............................................................................................54
8
1
General Information
Introduction
This guide describes how to install, check out, operate, and calibrate the Agilent Series 661xxA power modules used in the
Agilent 66000 Modular Power System. Programming the power module from the optional Agilent 66001A Keyboard is
described in Appendix B of this guide. Programming the power module over the GPIB bus is covered in the module
Programming Guide (see "Related Documents", below). Setting the GPIB address is described in the mainframe
Installation Guide. For complete verification procedures, see the module Service Guide (listed under "Related Documents",
below). The Agilent 66000A Modular Power System Product Note has specific application programs in several DOScompatible languages and GPIB interface drivers.
Related Documents
DocumentAgilent Part No.
Programming Guide for Agilent Series 66lxxA MPS Power Modules5959-3362
Installation Guide for DC Module Connectors5959-3366
Service Guide for Agilent Series 66lxxA Power Modules5959-3364
Installation Guide for Agilent 66000A Modular Power System Mainframe66000-90001
Service Guide for Agilent 66000A Modular Power System Mainframe66000-90003
Quick Reference Card for Optional Agilent 66001A MPS Keyboard*66001-90001
Agilent 66000A Modular Power System Product Note 5988-2800EN
* A Quick Reference Card is shipped with each Agilent 66000 mainframe.
Safety Considerations
When properly installed in the mainframe, the power module is part of a subsystem that constitutes a Safety Class 1
instrument. The power module has a protective earth connection that is completed through a contact spring in the
mainframe backplane. When the power module is moved in and out of the mainframe, the earth ground connection is made
before ac power is connected and is removed after ac power is disconnected.
Instrument Identification
Agilent Technologies instruments are identified by a 10-digit serial number. The format is described as follows: first two
letters indicate the country of manufacture. The next four digits are a code that identify either the date of manufacture or of a
significant design change. The last four digits are a sequential number assigned to each instrument.
ItemDescription
USThe first two letters indicates the country of manufacture, where US = USA; MY = Malaysia; SG = Singapore.
3648This is a code that identifies either the date of manufacture or the date of a significant design change.
0101The last four digits are a unique number assigned to each power supply.
Options
OptionDescription
760Output Connector with Isolation/Polarity Reversal Relays
0L2Extra set of Documentation
0B3Series 661xxA Service Guide
General Information 9
Accessories
Agilent No. Description
34551A Rack mount for Agilent 66001A MPS keyboard
Description
The Agilent 66lxxA Series Power Modules are used in the Agilent 66000 Modular Power System (MPS) mainframe to
provide a range of dc output voltages and currents. The modules are installed or removed from the front of the mainframe
without the need for disconnecting any wires. Modules may be connected in series or parallel to provide increased output
voltages or currents. The modules can be equipped with optional isolation and polarity reversal relays that are built into the
module output connector.
The power module front panel has digital readouts of output voltage and current. It also has annunciators that indicate:
• constant voltage, constant current, or unregulated operation
• activation of a protection circuit
• disabling of the output
• remote operation (addressed by the controller)
Programming
The power module is programmed over the GPIB from a controller using SCPI (Standard Commands for Programmable
Instruments). This makes power module programs compatible with those of all other instruments controlled with this
language. Among the functions that can be programmed are output voltage and current, OVP (overvoltage protection),
OCP (overcurrent protection), status registers, output relays, and output voltage and current calibration.
In addition, the power module has programmable trigger, list, and RI/DFI (remote inhibit/discrete fault indicator)
subsystems. Triggers can occur from signals at the mainframe TRIG IN jack or from selected internal events. The list
subsystem generates preprogrammed sequential outputs in response to triggers. The RI/DFI subsystem generates an output
on the mainframe FLT line in response to selected internal events or turns off the output in response to an input on the
mainframe INH line.
The power module also can be programmed locally from the optional Agilent 66001A MPS Keyboard. The keyboard has
an alphabetical command menu for all power module SCPI commands. By scrolling through the menu and entering the
appropriate parameters, commands may be created for development or debugging.
Output Characteristic
The power module can operate in either CV (constant voltage) or CC (constant current) mode over its voltage and current
output range (see Table 1-1). The operating locus (see Output Characteristic Curve in Table 1-2) shows a single-range,
limited two-quadrant capability. The operating point is determined by the voltage setting (VS), the current setting (IS) and
the load impedance (Rl). Two operating points are shown. Point 1 is defined by the load line cutting the operating locus in
the CV region, which defines the CV mode (curve A). In this mode, the power module will maintain the voltage at VS for
varying load currents (determined by V÷Rl) up to IS. If the load demands a current greater than IS, the power module
switches to CC mode. CC mode (curve B) is defined by the load line cutting the operating locus in the CC region (see Point
2). Under this condition, the power module maintains the current at IS at some voltage determined by IS x Rl.
10 General Information
When the power module is operated beyond either rated output, the performance specifications are not guaranteed, although
typical performance may be good. Operation in quadrant 2 is limited to about 10% of the maximum rated positive output
current. This allows the power module to sink current for more rapid downprogramming in the CV mode.
Specifications and Supplemental Characteristics
Table 1-1 lists the specifications of the power modules. Specifications are warranted over the specified temperature range.
Table 1-2 lists the supplemental characteristics, which are not warranted but are descriptions of performance determined
either by design or type testing.
Table 1-1. Performance Specifications
Agilent Model
Parameter66101A66102A66103A66104A66105A66106A
Specifications are warranted over the temperature range 0 to 55° C with a resistive load and the output connected for local
sensing. Derate the output current 1% per °C from 40° C to 55°C.
With respect to actual output @
calibration temperature following self
calibration.*
Voltage: 0.02% +2 mV5 mV8 mV16 mV32 mV54 mV
Current: 0.02% +6 mA3 mA2 mA1 mA0.6 mA0.3 mA
*Factory calibration temperature =
25 °C
Load Regulation (change in output
voltage or current for any load change
within ratings)
Line Regulation (change in output
voltage or current for any line change
within ratings)
Voltage:0.5 mV0.5 mV1 mV2 mV3 mV5 mV
Current:0.75 mA0.5. mA0.3 mA0.1 mA
Transient Response Time (for output
voltage to recover to within 100 mV of
its previous level following a step
change in load current that is up to 10%
of the power module rated output
current.
AC Input Ratings (selectable via
module switch- see Chapter 2)
Nominal line voltage (Vac)
115 V switch setting87- 132 Vac
230 V switch setting174- 250 Vac
Frequency range:47 - 63 Hz
Output Terminal Isolation (maximum,
from output to the mainframe chassis
ground):
< 1 ms
±240 Vdc
50 µA30 µA
Table 1-2. Supplemental Characteristics
Agilent Model
Parameter66101A66102A66103A66104A66105A66106A
Output Programming Range
(Maximum programmable values):
Voltage:8.190 V20.475 V35.831 V61.425 V122.85 V204.75 V
Current:16.380 A7.678 A4.607 A2.559 A1.280 A0.768 A
OV Protection:9.6 V24.0 V42.0 V72.0 V144.0 V240.0 V
Average Programming Resolution
Voltage:2.4 mV5.9 mV10.4 mV18.0 mV36.0 mV60.0 mV
Current:4.6 mA2.3 mA1.4 mA0.75 mA0.39 mA0.23 mA
OV Protection:50 mV120 mV200 mV375 mV750 mV1.25 V
OVP Accuracy (@ calibration
temperature ±5° C):*
* Factory calibration temp = 25° C
Readback Resolution
Voltage:0.305 mV0.763 mV1.335 mV2.289 mV4.577 mV7.629 mV
Current:0.587 mA0.293 mA0.169 mA0.099 mA0.049 mA0.030 mA
Drift (Temperature Stability)
(following a 30-minute warmup, change
in output over 8 hours under constant
line, load, and ambient temperature)
16 A7.5 A4.5 A2.5 A1.25 A0.75 A
(maximum current, without damage,
that the power module will withstand
while turned on and with the dc output
reverse biased by an external dc
source):
Typical Output Common Mode Noise
Current*
rms:0.5 mA
peak-peak:5 mA
* Referenced to mainframe chassis ground.
Remote Sensing Capability
Voltage drop per lead:Up to 1/2 of rated output voltage
Load voltage:Subtract voltage drop in load leads from specified output voltage rating
Load Regulation:For each 1-volt change in the negative output lead due to load current change,
add 2 mV to the voltage load regulation specification (see Table 1-1).
Command Processing Time (average
20 ms
time for output to begin to change after
receipt of digital data when the power
module is connected directly to the
GPIB):
Output Voltage Programming
Response Time*
Time for output to change from 10% to
90% of its total excursion:< 20 ms
Time for output to change from 90% to
< 20 ms< 50 ms
10% of its total excursion:
Time for output voltage to settle to
within 0.1% of the final value:120 ms
Trigger Response Time (average time
for the output voltage or current to
begin to change upon receipt of an
external trigger)
With GPIB activity:5 ms
Without GPIB activity:3 ms
Trigger Maximum Frequency (for
repetitive external triggering, the
maximum frequency for which the
Trigger Response Time is valid)
With GPIB activity:75 Hz
Without GPIB activity:85 Hz
Dwell Time
Programmable range:10 ms to 65 s
Resolution:2 ms
Accuracy
With GPIB activity:
Without GPIB activity:
Downprogramming:
Monotonicity:
Active downprogrammer sinks approximately 10% of rated output current
Output is monotonic over entire rated voltage, current, and temperature range
±
5 ms
±
2.5 ms
GPIB Interface Capabilities
Interface Signals (see IEEE 488.1):AH1,C0,DC1, DT1,EI,LE4,PP0, RL1,SH1,SR1,TE6
Programming Language:SCPI (Standard Commands for Programmable Instruments)
Serial Link Capabilities (maximum
power modules sharing one GPIB
primary address)
Savable States
Nonvolatile memory locations:5 (0 through 4)
Volatile memory locations:5 (5 through 9)
Nonvolatile memory write cycles:40,000 (typical)
Parameter Agilent Model Number and Parameter Value
Output Characteristic Curve:
Table 1-3. Replaceable Parts List
DescriptionAgilent Part No.
Cable assembly, mainframe GPIB
0.5 meters (1.6 ft)10833D
1 meter (3.3 ft)10833A
2 meters (6.6 ft)10833B
4 meters (13.2 ft)10833C
Cable assembly, mainframe serial link5080-2148
Fuse, ac-line, 6 A2110-0056
Output connector, standard5060-3386
Output connector, with relays5060-3387
Output connector converter board (converts5060-3351
5060-3386 to 5060-3387)
Plug, mainframe INH/RFI input1252-1488
Resistor, calibration(see Appendix A)
General Information 15
2
Installation
Inspection
Damage
When you receive your power module, inspect it for any obvious damage that may have occurred during shipment. If there
is damage, notify the shipping carrier and the nearest Agilent Sales and Support Office immediately. Warranty information
is printed in the front of this guide.
Items Supplied
In addition to this manual, check that the following items are included with each power module (see Table 1-3 for part
numbers):
•
•
•
One output connector
One Series 66lxxA Programming Guide
One or more Manual Change Sheets may be included with each guide. If there are change sheets, make the
indicated corrections to the guides.
Switches
Before inserting the power module in the mainframe, read the following information to determine if you need to change any
of the switch settings.
Line Voltage Switches
Figure 2-1 shows the location of the line voltage switches and the ac line fuse. The line voltage switches are shipped in
the 230-volt position. If required, use a flat-bladed screwdriver or similar tool to move both switches to the proper position
for your nominal line voltage.
Line VoltageSwitch Position
110, 120 Vac115
200, 220, 230, 240 Vac230
NoteIf you change the line switch position, remember to also correct the line voltage label on the rear of the
mainframe. The mainframe contains no line voltage switches.
Configuration Switch
Figure 2-2 shows the location of the power module configuration switch. Table 2-1 indicates the functions of the switch and
the factory-default settings. If you need to change any of the settings, refer to the applicable function.
Installation 17
Figure 2-1. Power Module Line Fuse and Switches
Figure 2-2. Power Module Configuration Switch
Table 2-1. Settings for Power Module Configuration Switch
Required Switch Setting
Desired Function1234567*8*
RI disabled0011
RI unlatched (live)0111
RI latching †1111
Display disabled011
Display enabled †I11
Inhibit calibration0011
Factory calibration0111
Normal calibration †1111
Power on state is *RCL 0
Power on state is *RST†
†= factory default setting "0" Off or open "1" On or closed.
*Positions 7 and 8 are for service functions. For normal operation, they must be set to 1.
011
111
18 Installation
Remote Inhibit (RI) Function Switches
This function allows the power module outputs to be shut down from a signal (low-true TTL level) applied to the mainframe
INH input. The INH input is internally connected to the mainframe remote inhibit (RI) line. This line is normally high and
is distributed to all power modules in the mainframe. An external switch closure that shorts the mainframe INH input is
detected by the power module as an RI signal.
NoteSee "Chapter 3 - Connections" in the mainframe Installation Guide for more information on external INH
connections.
Within each power module, the RI signal is applied to the RI section of the configuration switch (see Figure 2-2). The RI
switch allows you to select one of the following responses to the RI input signal:
Switch SettingRI Action
RI disabledThe module ignores the RI input signal
RI latchedThe module shuts down and remains shut down when the RI signal goes true. A
software command is required to restore the output (see "Chapter 4 - Basic
Power Module Commands").
RI nonlatched (real-time)The module shuts down only as long as the RI signal is true (TTL low). The
output is restored when the RI signal goes false (TTL high).
Display Function Switch
A single switch configures the display function. Use it to permanently turn the power module voltage and current display
indicators off or on (the annunciators are unaffected by this switch). If the switch is left in the ON position, the display may
be turned on or off by software commands (see the power module Programming Guide).
Calibration Function Switches
The calibration switches allow you to select one of the following modes of calibration:
Switch SettingCalibration Mode
Normal calibrationPermits normal calibration (requires entry of a password)
Factory calibrationRestores original factory calibration (no password is required)
Inhibit calibrationPrevents calibration
The factory position is useful if the power module has been miscalibrated or if the calibration password has been lost.
Power-On Function Switch
This switch allows you to determine the operating state of the power module when it is turned on. With the switch set to 1
(on), the power module will be in the factory-default reset state (see *RST in "Chapter 3 - Language Dictionary" of the
power module Programming Guide). If you move the switch to 0, the power module will turn on to whatever state you save
to memory location 0. See "Chapter 4 - Basic Power Module Commands" for more information.
Installation 19
Installing The Module In The Mainframe
Figure 2-3. Power Module Installation
NoteA fully loaded mainframe can weigh over 36 kg (80 lbs). Install the mainframe into the rack (see the
"Mainframe Users Guide") before installing the modules into the mainframe.
1.Turn off the mainframe power switch.
2.Make certain the pull tab extends from the module (see Figure 2-3).
3.Slide the module into the mainframe slot. You may use any available slot.
4.Push the module into the backplane connector until you feel the module connector snap into the backplane connector.
5.Push the lock tab into the front of the module. If the module is not properly plugged into the backplane connector, the
lock tab will not retract into the module.
6.If desired, mark or label the power module with its slot address.
ImportantMarking or labeling the power module will prevent replacing it in the wrong slot if it is subsequently
removed from the mainframe. Also, with two mainframes linked together, a slot can be either of two
numbers, depending on whether it is in the main or the auxiliary mainframe (see "Connecting the
Controller" in this chapter).
Connecting The Load
Output Connector
One output connector (see Table 1-3) is shipped with each power module. This can be either a standard or relay type. The
Installation Guide supplied with the connector shows how to open the connector, connect the wires, and secure the
connector to the mainframe.
20 Installation
Output Connections
Before making the actual connections, you must decide on the system configuration. The following factors are described in
the rest of this chapter:
■ using the correct wire size
■ maintaining isolation guidelines
■ selecting local or remote voltage sensing
■ connecting modules in series or in parallel
■ using output relays
■ connecting to capacitive or inductive loads
Selecting the Proper Wire Size
Fire Hazard. To satisfy safety requirements, load wires must be large enough not to overheat when
carrying the short-circuit output current of the device connected to the power module. See Table 2-2
for the characteristics of AWG (American Wire Gage) copper wire.
Table 2-2. Current Capacity and Resistance of Stranded Copper Conductors
*In free air **At 20 °C
16 19.4 0.0137 0.00417
14 31.2 0.0086 0.00262
Output Isolation
The output connector ground terminal is a low-noise ground provided for convenience, such as for
grounding wire shields. This terminal is not designed to function as an equipment safety ground.
The power module output terminals are isolated from earth ground. If required, either output terminal may be grounded.
The potential between either output terminal and ground must not exceed ±240 Vdc. Failure to
observe this restriction may damage the power module.
Local Voltage Sensing
Figure 2-4A shows the load connection for local sensing. There is a switch on the output connector that selects either local
or remote sensing of the output voltage. The connector is shipped with the switch in the LOCAL position. In order to
configure the output for local sensing, make certain this switch is set to LOCAL.
Note The position of the Local/Remote switch also can be determined by software (see
VOLT:SENS:SOUR? in "Chapter 3 - Language Dictionary" of the Programming Guide).
With local sensing, the power module voltage readback circuit senses the voltage at the output terminals. Since this does
not compensate for voltage drops in the terminal screw connections and output leads, use Local sensing only in applications
requiring low output currents or where the load regulation is not critical.
Installation 21
Remote Voltage Sensing
Figure 2-4B shows the wiring for remote sensing. There is a switch on the output connector that selects either local or
remote sensing of the output voltage. To configure the output for remote sensing, do the following:
■ Connect sense leads to the load
■ Make certain that the connector switch is set to REMOTE
NoteIf you leave the connector switch in LOCAL, the power module will regulate the programmed voltage at
the connector, not at the load.
Because they do not carry load current, you may use smaller gauge wire for the remote sense leads.
Be careful to avoid open circuits in the sense leads, such as leaving the output connector sense switch in the Local position.
If this happens, the power module will regulate at its output terminals instead of at the load.
NoteIf the sense terminals are left open, the voltage at the output terminals will increase approximately 3 to 5%
over the programmed value. The readback voltage will not indicate this increase because readback is
measured at the sense terminals.
Figure 2-4. Load Connection
The dashed lines in the connection drawings illustrate remote sense connections. In this case, the remote sense terminals of
the power module are connected to the load rather than the output terminals. This allows the power module to automatically
compensate for the voltage drop in the load leads as well as to accurately read back the voltage at the load. In remote-sense
applications, the voltage readback from across the load is not the output voltage of the power module. The actual output
voltage is the sum of the load voltage and the voltage drop in the load lead. Keep this output voltage within the power
module’s maximum voltage rating. Failure to do this may result in an unregulated condition, especially when the line
voltage is low.
Voltage Readback
In remote sense applications, the voltage readback occurs directly at the load. This allows the power module to
automatically compensate for the voltage drop in the load leads and to provide an accurate voltage readback directly across
the load.
22 Installation
Output Rating
The rated output voltage and current specified in Table 1-1 applies at the output terminals of the power module. With
remote sensing, the power module must increase its output to compensate for voltage dropped in the load leads. If you
attempt to provide full rated output voltage at the sense terminals (load), the power module’s output voltage may exceed its
maximum rating. This may trip the OV protection circuit, which senses the voltage at the output terminals, or cause an
unregulated output condition, particularly when the ac line voltage is low.
Output Noise
Noise picked up by the sense leads may appear at the output of the power module and can adversely affect the load
regulation. To minimize noise pickup, twist the sense leads and route them parallel and close to the load leads. It may be
necessary to use shielded sense leads in noisy environments. If you do, ground the shield only at the output connector
ground screw. Do not use the shield as one of the sense leads.
Parallel Operation
Power modules may be connected in parallel to obtain increased output current. The power modules must be individually
programmed; they do not function in the autoparallel mode that is commonly used by many Agilent power supplies.
Figure 2-5 shows two power modules connected in parallel. You must keep the same impedance to the load by using leads
of equal length and wire size from each module to the load. Select one module (usually the one with the lesser current
capacity) to operate in the "CV Mode". The other module then must operate in the "CC Mode" module. If you are using
remote sensing, connect the sense leads to the module operating in the CV mode.
Since you must program one module to operate in CV mode and the other to operate in CC mode, refer to the output
characteristic curve shown at the end of Chapter 1 to see what this means. Curve shows a module operating in CV mode;
its output voltage remains constant over the range of its operating current. Curve ô shows a module operating in CC mode;
its output current remains constant over the range of its operating voltage.
Figure 2-5. Connecting Power Modules in Parallel
For proper parallel operation, observe the following rules:
1.Program both module outputs OFF.
2.Program the CV mode module for the desired output voltage.
3.Program the CV mode module’s OVP voltage to the desired value; always higher than the output voltage.
4.Program the output and OVP voltages of the CC module slightly higher (about 1 volt) than those of the CV module.
This is to ensure that the CC module stays in CC mode.
Installation 23
5.In order to maintain proper regulation, the load must always draw at least as much current as is programmed for the
module that is in CC mode. You can maintain regulation over a range of current only as long as this condition remains
true.
6.As near as is permitted by condition 5, program the current levels of both modules for a balanced distribution of the
total output current. Do not program the CV module near its maximum output current level.
7.Program the outputs of both modules ON.
8.When the system is operating, observe that the CV annunciator of the CV module stays on and the CC annunciator on
the CC module stays on. If not, repeat steps 1 through 7.
9.Once the modules are properly set up, do all subsequent voltage programming from the CV module; the CC
module will track that module.
Remember that although the CV module is controlling the output voltage, the CC module is
programmed to a slightly higher voltage. Do not allow the CC module to go into CV mode. Do not
program the CV module to 0 volts without first disabling the outputs of both power modules.
Otherwise, the CV module could sink up to 10% of its rated output current from the CC module.
As an example, assume that an Agilent 66102A (20 V @ 7.5 A) and an Agilent 66103A (35 V @ 4.5 A) are connected in
parallel to supply a load of 10 amperes at 18 volts. The Agilent 66102A is selected as CC mode module and will supply
approximately 7.6 A, maximum. The Agilent 66103A will be the CV module and will supply the remaining current (2.4 A).
When the two modules are operated in parallel, you may expect the system to regulate at 18 Volts and 10 amperes as long as
the load current remains above 7.6 amperes (see rule 5, above).
The following program shows how to program the two power modules. Generic code (SCPI commands) are shown; they
may be sent either from the keyboard or from a GPIB controller.
OUTP OFFSend to both modules
VOLT:LEV 18Program the CV mode module
VOLT:PROT 18.5
CURR:LEV 2.4
VOLT:LEV 19Program the CC mode module
VOLT:PROT 19.5
CURR:LEV MAX
OUTP ONRestore the outputs of both modules
Series Operation
To prevent damage to the equipment, floating voltages must not exceed 240 Vdc. No output terminal
may be more than 240 V from chassis ground.
Figure 2-6 shows how the outputs of two power modules may be connected in series to increase the output voltage.
Connect only power modules that have the same maximum output current ratings. It is recommended that you set up
both modules to operate in CV mode with their current outputs equal to the full load current. If the external load is a
storage device, such as a battery or large capacitance, be careful how you shut down the system. For example, turning off
just one module could damage the remaining module by subjecting it to double its maximum output voltage from the storage
device.
24 Installation
Figure 2-6. Connecting Power Modules in Series
Each power module has a reverse voltage protection diode across its output. If a reverse voltage is
applied, the power module has no control over the current through this diode. To avoid damaging the
power module, never connect it to a reverse voltage that can force it to conduct current in excess of
the power module’s maximum reverse current (see Table 1-2).
Multiple Loads
When connecting multiple loads to the power module with local sensing, use a separate pair of wires for each load (see
Figure 2-7). Each pair of wires should be as short as possible and twisted or bundled to reduce lead inductance and noise
pickup. If cabling or terminal considerations require the use of distribution terminals located outside the output connector,
then remote voltage sensing is recommended. Connect the sense leads either at the distribution terminals or directly at one
of the loads if it is more critical than the others.
Figure 2-7. Connecting Multiple Loads
Optional Relay Connector
If you are using the Option 760 output connector with isolation or polarity reversal relays, the output and sense lead
terminal connections are the same as those of the standard output connector. When the output connector Remote/Local
switch is in Remote, both the output leads and the sense leads are under relay control. An existing standard connector can
be converted into a relay connector. The Installation Guide provided with the connector (see "Related Documents" in
Chapter 1) includes instructions for doing this.
Capacitive Loads
Installation 25
The power module is designed to be stable for load capacitances up to the following values:
You may safely connect the power module output to inductive loads up to 100 mH. (Higher inductances are possible with a
modified module. Consult the factory for details.)
OVP Considerations
The OVP circuit senses the voltage at the output terminals, not at the sense terminals. Therefore the voltage sensed by the
OVP circuit can be significantly higher than the voltage being regulated at the load. You must program the OVP trip
voltage high enough to compensate for the expected drop from the power module output to the load.
Battery Charging
The power module OVP trip circuit has a downprogrammer that discharges the output whenever OVP trips. If the output is
connected to a battery and the OVP is tripped (or the power module voltage is programmed below the battery voltage), the
power module will sink current from the battery. The down programmer limits the value of this current to no more than
10% of the power module’s maximum rated output current.
Connecting The Controller
The Agilent 66000A Mainframe has a GPIB port for connection to the controller. Each power module has a GPIB primary
address determined by a switch on the mainframe, and a GPIB subaddress determined by the mainframe slot in which the
module is installed. If the mainframe GPIB address is set to 705, this becomes the power module’s primary address.
The Agilent 66000A Mainframe mode switch determines the IEEE 488 secondary addresses (also referred to as
subaddresses) of the modules that are installed in the mainframe. With the mainframe mode switch set to MAIN, modules
are assigned secondary addresses of 00 to 07, which correspond to the slot locations indicated on the mainframe. The
mainframe mode switch must be set to MAIN when the mainframe is connected directly to the GPIB. For example, if a
module is installed in slot 3 of a mainframe that is set to GPIB address 705, the complete address of the module is 70503.
The mainframe mode switch must be set to AUX (auxiliary) when the mainframe is serially-linked to another mainframe
that is directly connected to the GPIB. In mainframes that have the mode switch set to AUX, modules are assigned
secondary addresses of 08 to 15. Secondary address 08 corresponds to slot location 0 on the mainframe and secondary
address 15 corresponds to slot location 7 on the mainframe. For example, if a module is installed in slot 3 of a mainframe
that is serially linked to another mainframe at GPIB address 705, the complete address of the module is 70511.
Module Slot Locations/Addresses
Mainframe Mode Switch = MAINMainframe Mode Switch = AUX
For details concerning GPIB cabling and addressing, see "Chapter 2 - Installation" in the Agilent 66000A Mainframe Users
Guide.
26 Installation
3
Turn-On Checkout
Introduction
This chapter provides a quick test of the power module functions. See "Chapter 4 - Basic Power Module Commands" for
more details of power module operation.
NoteThese procedures assume you have checked and, if required, correctly set the following switches for each
module:
•
•
•
The procedures for doing this are given in Chapter 2.
Module Panel Display
The power module display provides the information shown in Table 3-1. There are no operating controls on the power
module.
the line voltage switch (see Figure 2-1)
the configuration switch (see Table 2-2)
the output connector Local/Remote switch
Table 3-1. Power Module Front Panel Display
INDICATORFUNCTION
VOLTS
AMPS
CV
CC
Addr
Unr
Dis
Prot
Digital readout of output voltage
Digital readout of output current
Lights when power module is in constant voltage mode
Lights when power module is in constant current mode
Lights when power module is addressed over GPIB
Lights when power module output is unregulated
Lights when power module output is disabled
Lights when power module protection circuit is activated (overvoltage,
overcurrent, overtemperature, or remote inhibit)
Turn-On Checkout 27
Power Module Turn-On State
When you turn on the mainframe, the power module goes through a self-test. All front panel readout digits and
annunciators turn on briefly. The panel then remains in the state shown in Table 3-1A.
NoteThe figure assumes the power module still retains its factory default turn-on state. You can change this
state if desired (see "Chapter 4 - Basic Power Module Commands").
Checking Basic Module Functions
The power module is designed for remote programming over the GPIB. It also can be locally programmed from the
optional Agilent 66001A MPS Keyboard. Table 3-2 gives the SCPI commands for the remotely programmed tests. You
can send these same commands from the keyboard (see "Appendix B").
Table 3-2. Testing Basic Functions with SCPI Commands
CommandActionDisplay Response
VOLTSAMPSCVCCAddr*DisProt
Output Voltage (Disconnect Load)
VOLT 5.1Set output voltage to 5.1 V0.000.00OffOffOnOnOff
OUTP ONEnable the output5. 100.00OnOffOnOffOff
location 5
VOLT 3.55Set output voltage to 3.55 V3.550.00OnOffOnOffOff
OUTP OFFTurn off the output0.000.00OffOffOnOnOff
*SAV 6Save present state to
location 6
*RCL 5Restore state 55.100.00OnOffOnOffOff
*RCL 6Restore state 60.000.00OffOffOnOnOff
Output Current (With output disabled, short the
output terminals with a wire size sufficient to carry
the maximum current of the module.)
0.000.00OffOffOnOffOn
5.100.00OnOffOnOffOff
0.000.00OffOffOnOnOff
CURR 3.1Set output current to 3.1
amps
OUTP ONEnable the output0.003.10OffOnOnOffOff
Overcurrent Protection
CURR:PROT:STATONActivate OCP circuit (by
enabling OCP when the
output is shorted)
CURR:PROT:STAT
OFF
OUTP:PROT:CLEClear OCP circuit0.003.10OffOnOnOffOff
28 Turn-On Checkout
Clear OCP circuit0.000.00OffOnOnOnOff
*Addr will not light if the module is controlled from the keyboard.
0.000.00OffOffOnOnOff
0.000.00OffOffOnOffOn
In Case Of Trouble
Mainframe Failure
You can assume there is a problem with the mainframe if there is more than one module in the mainframe and none of the
module fans are on. The trouble also is probably in the mainframe if the module fans are on and the their displays are
enabled (see "Configuration Switch" in "Chapter 2 - Installation") but their VOLTS and AMPS displays do not light. If a
module does not appear to be operating but its VOLTS and AMPS display light, move the module to another address slot.
If the above condition still occurs, then the problem probably is in the module.
Module Line Fuse
If a power module’s fan is on but its front panel does not light, the module line fuse may be blown. Proceed as follows:
1.Remove the power module from the mainframe.
NoteYou can remove and insert the power module without turning off the mainframe power provided the
module output is either disabled or is programmed to zero and there is no GPIB bus, trigger bus, or
RI/DFI activity. If you are in doubt, turn off the mainframe power.
2.Check the line fuse (see Figure 2-1). If it is defective, replace it with one of the same type and rating (for the Agilent
part number, see Table 1-3).
Do not use a slow-blow fuse as a replacement.
3. Replace the power module in the mainframe.
Module Output Connector
If the module panel indicates a normal voltage but there is no output at the load, the problem may be in the output
connector. This is even more probable if the connector has relays. The following tests may isolate the problem:
•
•
Error Messages
If another module is working normally, use its mainframe slot for the suspected module (be careful to guard against
any difference in module output voltage). If there is still no output, the problem is in the module. If the module has an
output in the new slot, the problem is with its original output connector.
To check a suspected connector with a good module, proceed as follows (see DC Module Connectors InstallationGuide for details of the connector and its jumpers):
1. Disable the power module output (Dis annunciator on).
2. Remove the output connector from mainframe.
3. Examine the connector plug for bent pins.
4. Remove the cover from the output connector.
5. If there is no relay board, go to step 6. Otherwise, proceed as follows:
a. Remove the relay board by pulling it straight up.
b. Examine relay board connector for bent pins.
c. Examine the connector board to ensure that the required jumpers have been cut to enable relay
operation.
6.Examine the jumpers on the connector board. If any jumpers have been cut, they must be replaced.
A power module may fail either during selftest or while operating (runtime). In either case, the module display may show
an error message indicating the reason for the failure.
Turn-On Checkout 29
Selftest Error Messages
Table 3-3 lists the displayed selftest error messages. All these errors are hardware failures that require service.
NoteIf you are using the optional Agilent 66001A MPS Keyboard, it will also display selftest error
messages.
Table 3-3. Selftest Error Messages
DisplayFailed TestDisplayFailed Test
U 1Internal RAMU 8Ambient temperature reading
U 2External RAMU 9(Not used)
U 3ROM checksumU 10Voltage programming, low range
U 4(Not used)U 11Current programming, low range
U 5(Not used)U 12Voltage programming, high range
U 612 V supplyU 13Current programming, high range
U 75 V supply
The power module also can detect an EEPROM checksum error. This error is not identified by number, but causes the
following symptoms:
•
•
•
•
An EEPROM checksum error can occur due to the following operating conditions:
•
•
•
Runtime Error Messages
Table 3-4 lists the runtime error messages. Runtime errors cease normal power module operation, disable the output, and
display a code on the front panel. The error code is preceeded by "U" and is displayed on both the VOLTS and AMPS
displays. Runtime errors are hardware malfunctions that require service.
DisplayMeaningDisplayMeaningDisplayMeaning
U 101EEPROM write errorU 102Internal software errorU 103Unexpected interrupt
The power module starts up with both the VOLTS and AMPS full-scale programming and metering ranges
accepting values up to 1000.
Self-test error code 330 is stored in the SCPI error queue where it can be read by software (see "Chapter 5 -
Error Messages" in the Programming Guide).
The software identify query (*IDN?) returns 0A in the model field.
The calibration password is set to 0.
Excessive number of write cycles to an EEPROM (see Table 1-2). This condition is not recoverable and
requires service.
Loss of ac input power during a checksum calculation. This condition, which is very unlikely, is recoverable.
You may be able to recover by performing the following steps from the controller or keyboard:
1. Enable the calibration mode (CAL:STAT ON,0)
2. Save an operating state to EEPROM. (e.g., *SAV 2)
This forces the power module to write to EEPROM and establishes a new checksum.
Table 3-4. Runtime Error Messages
30 Turn-On Checkout
Basic Power Module Commands
Introduction
"Chapter 3 - Language Dictionary" of the Programming Guide describes all the power module commands. This chapter
introduces you to the commands that control the following basic functions:
4
•
output state
•
protection circuits
•
fixed-mode output
•
list-mode output
The power module can be programmed from a controller over the GPIB or from an optional Agilent 66001A MPS
Keyboard plugged into the mainframe. In order to apply the information in this chapter, you must have a working
knowledge of either method. Information concerning programming is presented as follows:
Method of ControlConsult
GPIB ControllerProgramming Guide for Agilent Series 66lxxA MPS Power
Modules
MPS Keyboard Appendix B of this guide
GPIB Controller
The power module is programmed by SCPI (Standard Commands for Programmable Instruments) commands sent as strings
within your language statements. "Chapter 2 Introduction to Programming" of the Programming Guide explains how to do
this. The syntax of each command in given in Chapter 3 of that guide.
MPS Keyboard
If you have installed the optional MPS keyboard, you can execute the commands given here. You do not have to
understand the details of SCPI programming, because the keyboard menu allows you to step through all commands. If you
have a keyboard, it is highly recommended that you use it until you are familiar with the general concepts of power module
operation.
NoteThe keyboard menu omits optional SCPI headers. That is why some commands displayed on the
keyboard will not look exactly like the syntax given in Chapter 3 of the Programming Guide.
•
triggers
•
the RFI function
•
the DFI function
Synopsis Of Commands
The following tables summarize the SCPI commands by function. The short form without optional headers is used in this
chapter. For example, the full command for turning on the output as given in the Programming Guide is OUTPut[: STATe] ON. Here the optional [STATe] (in brackets) is omitted and only the short form (in capital letters) OUTP ON is
used.
The query form of a command (OUTP?) is omitted unless the command is only of the query form (such as
MEAS:VOLT?).
Basic Power Module Commands 31
Controlling the Output State
The following commands control the power module output state:
Table 4-1. Power Module Output Commands
Command Function
OUTP ON Enables the output.
OUTP OFF Disables the output.
(If an optional output relay is installed, the command is executed in a sequence that prevents
"hot switching".)
OUTP1,NOR Enables the output without affecting the output relay.
OUTP 0,NOR Disables the output without affecting the output relay.
OUTP: REL 1 Closes the (optional) output relay contacts.
OUTP:REL 0 Opens the (optional) output relay contacts.
OUTP:REL:POL NORM Makes the (optional) output relay polarity the same as the module output.
OUTP:REL:POL REV Makes the (optional) output relay polarity opposite to the module output. The output is
disabled while the relay polarity is being reversed.)
Controlling Protection Functions
The following commands control the power module protection circuits.
Table 4-2. Power Module Protection Commands
Command Function
CURR:PROT:STAT ON Turns on the OCP (overcurrent protection), which disables the output if the output
current exceeds the programmed current.
CURR: PROT: STAT OFF Turns off the current protection.
VOLT:PROT <value> Programs the OVP (overvoltage protection) level. The protection circuit will trip if the
output voltage exceeds the OVP level.
OUTP:PROT:CLE
OUTP:PROT:DEL .05 Specifies a delay (in seconds) between the time a protection condition is detected and
Controlling Fixed-Mode Output
The following commands control the power module fixed-mode voltage and current output.
Command Function
CURR:MODE FIX Sets the current mode to fixed (as opposed to list). FIX is the factory default power on
CURR <value> Programs the immediate output current level (in amperes).
CURR:TRIG <value> Programs the triggered output current level (in amperes). See "Trigger Commands".
MEAS:CURR? Returns the present value of the output current.
VOLT:MODE FIX Sets the voltage mode to fixed (as opposed to list). FIX is the factory default power on
VOLT <value> Programs the immediate output voltage level (in amperes).
VOLT: TRIG <value> Programs the triggered output voltage level (in amperes). See "Trigger Commands".
MEAS:VOLT? Returns the present value of the output voltage.
VOLT:SENS? Returns the position of the output connector sense switch (INT is local; EXT is remote).
Clears any active protection conditions (panel Prot annunciator goes off). Before the
command can comply, you must remove the condition that caused the protection circuit
to trip.
the actual activation of the protection circuit. (Does not apply to OVP.)
Table 4-3. Power Module Fixed-Mode Output Commands
state.
state.
32 Basic Power Module Commands
Controlling List-Mode Output
The following commands control the power module list-mode voltage and current output. Lists require a trigger to begin
execution. For an explanation of lists and triggers, see "Chapter 5 - Synchronizing Power Module Output Changes": in the
Programming Guide.
Table 4-4. Power Module List-Mode Output Commands
Command Function
CURR:MODE LIST Sets the current mode to list (as opposed to fixed).
LIST:CURR <value>,<value> Programs the output current values (or points) in the list. When you execute the list,
the output will sequentially step through the list values.
LIST:CURR:POIN? Returns the number of points programmed in the current list.
VOLT:MODE LIST Sets the voltage mode to list (as opposed to fixed).
LIST:VOLT <value>,<value> Programs the output voltage values (or points) in the list. When you execute the list,
the output will sequentially step through the list values.
LIST:VOLT:POIN? Returns the number of points programmed in the voltage list.
LIST:DWEL <value>,<value> Programs the dwell value, in seconds, for each value in a voltage or current list.
There must be one dwell value for each value in the voltage or current list.
LIST:DWEL:POIN? Returns the number of points programmed in the dwell list.
LIST: STEP ONCE Commands the list to execute only one value (point) when a trigger is received. This
specifies a trigger-paced list.
LIST: STEP AUTO Commands the list to execute all values (points) when a trigger is received. This
specifies a dwell-paced list.
Controlling Triggers
The following commands control the power module trigger subsystem. For a detailed description of this subsystem, see
"Chapter 5 - Synchronizing Power Module Output Changes": in the Programming Guide.
Table 4-5. Power Module Trigger Commands
Command Function
INIT Initiates the trigger subsystem to detect one trigger. No triggers will be processed
unless the subsystem is initiated.
INIT:CONT
TRIG:SOUR
BUS|EXT|HOLD|LINK| TTLT
TRIG:DEL <value> Programs the delay time (in seconds) between the detection of a trigger and its
TRIG *TRG Either command sends a trigger signal to the power module over the GPIB bus.
TRIG:LINK <parameter> When TRIG:SOUR LINK is programmed, this command specifies the link parameter
OUTP: TILT ON
OUTP: TTLT OFF Disables the power module Trigger Out signal.
OUTP:TTLT:SOUR
BUS|EXT|HOLD|LINK
OUTP:TTLT:LINK When OUTP: SOUR LINK is programmed, this command specifies the link
Keeps the trigger subsystem continuously initiated so it will process each incoming
trigger.
Specifies which trigger source is to be accepted by the trigger subsystem (see the
Programming Guide). HOLD prevents response to all triggers.
execution.
for the trigger (see Programming Guide).
Enables the power module Trigger Out signal, which is a 20-µs negative-true TTL
pulse available at the mainframe TRIGGER OUT jack. To use this output, you must
program a TTLT trigger source (OUTP:TTLT:SOUR).
Specifies which trigger source is to be used for the Trigger Out signal. HOLD
prevents a response to any source.
parameter for the trigger (see Programming Guide).
Basic Power Module Commands 33
Using the RI/DFI Functions
RI (Remote Inhibit) Input
The signal applied to the mainframe digital connector INH input (see "Chapter 3 Connections" of the mainframe
Installation Guide) is the RI (remote inhibit). The module function switch described in "Chapter 2 - Installation" allows
you to enable or disable the RI input and, when enabled, to specify RI as either latching or nonlatching. If the module
function switch is set to enable RI, then the input signal will disable the power module output. If the function switch is also
set to RI nonlatching, then removing the signal from the INH input restores the power module output. If the function switch
is set to RI latching, an RI status bit is latched and the power module remains disabled after the input signal is removed.
The RI status bit is removed either by reading the Status Questionable Event register (STAT: QUES?) or by clearing it
(*CLS). See the Programming Guide for specifics.
The detected RI bit can be used to generate a DFI signal that appears at the mainframe FLT output. This signal, in turn, can
be wired to the RI inputs of other power modules to also disable their outputs (see the wiring diagram in Chapter 3 of the
mainframe InstallationGuide).
DFI (Discrete Fault Indicator) Output
When the DFI function is enabled (OUTP:DFI ON), you can program the Status Subsystem to cause any status condition
(including RI) to generate a DFI output, which appears as a TTL low-true signal at the mainframe digital connector FLT
output. See "Chapter 4 - Status Reporting" in the Programming Guide for details of programming the Status Subsystem.
Table 4-6. DFI Output Commands
Command Function
OUTP:DFI ON Enables the DFI function.
OUTP:DFI OFF Disables the DFI function.
OUTP: DFI: SOUR LINK Specifies the source for DFI events. The only source is LINK.
OUTP: DFI: LINK <parameter> Specifies what power module status events are linked to the DFI function. Table 3-1
in the Programming Guide identifies all the DFI link parameters.
Only one parameter may be specified for OUTP: DFI: LINK, such as OUTP: DFI: LINK CC. However, you can specify
entire status groups by specifying a summary bit. For example, OUTP: DFI: LINK QUES specifies the Questionable Status
summary bit, which is the logical OR of OV, OC, OT, RI, and UNR. The default link parameter SUM3 is the logical OR of
the QUES, OPER, and ESB summary bits. This gives DFI access to all three status register groups (see "Chapter 4 - Status
Reporting" in the Programming Guide for more information).
Changing The Power On State
Switch 6 of the module function switches (see "Chapter 2 - Installation") determines the state of the power module when
you turn it on. With the switch in the factory-default position (1), the module turns on in the reset (*RST) state. You will
find the parameters for this state listed under the *RST command in "Chapter 3 - Language Dictionary" of the
Programming Guide. If you store your own parameters in location 0 (*SAV 0), and set the switch to 0, then the module
will assume that state when you turn it on.
NoteThe *RST state is a safe turn-on state that should not be replaced without careful consideration.
34 Basic Power Module Commands
A
Calibration
Introduction
The power module may be calibrated either over the GPIB from a controller or from an Agilent 66001A Modular Power
System keyboard. Instructions are included for either method. The procedures given here apply to all Series 66l0xA Power
Modules.
NoteThe Agilent 66000A mainframe does not require calibration.
Enabling Or Disabling The Calibration Function
There are two ways of controlling access to the calibration function. One is by hardware and the other is with software.
Hardware Control
The CAL positions of the power module function switch (see Table 2-1 in "Chapter 2 Installation") allows hardware control
over the calibration function. The factory-default setting is for normal calibration. Setting the switches to the Inhibit
calibration position prevents any calibration from being performed.
Software Control
The password parameter of the CAL: STAT command allows software control over the calibration function. The standard
factory password is the module model number (for example, 66102 for the Agilent 66102A). By changing the password,
you can either restrict or allow unlimited access to the calibration function (see "Changing the Calibration Password").
Changing The Calibration Password
You can change the password only when the module is in the calibration mode (which requires you to know the present
password). To change the password from 66101 to 81591, send the following commands:
CAL:STAT ON, 66102CAL:PASS 81591
If you change the password to 0, then all password protection is removed. The Calibration Subsystem then will accept the
CAL: STAT ON command without a password.
Performing a Calibration
Perform the procedures in the order given. The assumed password is 66102; use your actual password in the procedures.
ImportantThese instructions do not include verification procedures. If you need to perform verification as part of
your calibration procedure, refer to the Series Agilent 66I0xA Service Manual.
Calibration 35
Equipment Required
The equipment listed in Table A-1, or equivalent, is required for calibration.
Table A-1. Equipment Required for Calibration
Equipment Characteristics Recommended Model
Voltmeter
Shunt
Agilent 66101A,
66102A
Agilent 66103A,
66104A, 66105A,
66106A
GPIB Controller or
Keyboard
D-c accuracy 0.005%, 6 digits; resolution 1 µV
0.01Ω, 100 A, 100 W, 0.04% @ 100 W, 0.01% @ 1W,
power coeff. 0.0004%/watt in air
0.1 Ω, 15 A, 25 W, 0.04% @ 25 W, 0.01% @ 1W, power
coeff. 0.002%/watt in air
HP Vectra (or IBM compatible) with GPIB Interface or Agilent BASIC series Agilent 66001A
MPS
Agilent 3458A
Guildline 9230/100
Guildline 9230/15
Calibrating Voltage
Calibration may cause dangerous voltages to be present at the power module output.
The following procedure calibrates the output voltage and the overvoltage protection (OVP). During voltage calibration,
you will enter two readings from the external DVM. You must calibrate the voltage before calibrating the OVP. You do
not have to enter any external readings when calibrating the OVP.
Keyboard EntryController Entry †Function
Output Voltage Calibration
Note:The following step overwrites the existing voltage calibration constants stored in nonvolatile memory.
Overvoltage Protection Calibration
If the optional output relay is installed, either disconnect it or set it to the OFF (open) state.
Note:It takes a few seconds for the power module to make the measurement. When completed, the new constant is
automatically stored in nonvolatile memory.
Table A-2. Voltage Calibration Procedure
Connect the equipment as shown in Figure A-lA
*RST Reset the power module
(Before proceeding, set the module output, via the keyboard or the GPIB, for 1.0 V at 0.5 A)
OUTP ON Enable the output
CAL:STAT 1,66102
CAL:VOLT:LEV MIN Select the lower calibration point
CAL: VOLT: DATA <NRf> Enter the digital voltmeter reading
CAL:VOLT:LEV MAX Select the upper calibration point
CAL:VOLT:DATA <NRf> Enter the digital voltmeter reading
CAL:SAV Save the new calibration constants
CAL:VOLT:PROT Perform OVP calibration
† See Figure A-2 for program listing.
Using your password, enable the calibration
mode
‡ Enter the voltage measured by the external digital multimeter.
36 Calibration
Figure A-1. Calibration Test Setup
Calibrating Current
The following procedure calibrates the output current. During the calibration, you will make two voltage measurements
across the output shunt and enter the computed current.
Table A-3. Current Calibration Procedure
Keyboard EntryController Entry † Function
OUTP OFF Disable the output
Connect the equipment as shown in Figure A-lB.
(Before proceeding, set the module output, via the keyboard or the GPIB, for 1.0 V at 0.5 A.)
OUTP ON Enable the output
CAL:STAT 1,66102 Using your password, enable the calibration
mode
CAL:CURR:LEV MIN Select the lower calibration point
Wait for the meter reading to stabilize. Then read the meter and enter the calculated current value.‡
CAL: CURR:DATA <NRf>
CAL:CURR:LEV MAX
Enter lower current value
Select the upper calibration point
Wait for the meter reading to stabilize. Then read the meter and enter the calculated current value.‡
CAL: CURR: DATA < NRf>
Enter the upper current value
Note: The following step overwrites the existing current calibration constants stored in nonvolatile memory.
CAL:SAV Save the new calibration constants
† See Figure A-2 for program listing.
‡ Calculate the current value as follows:
R
V
I=
R
Calibration 37
Using The CAL:AUTO Command
Normal calibration procedures also calibrate the readback circuits that respond to the MEAS: CURR? and MEAS: VOLT?
commands. During normal operation, the readback accuracy is affected by temperature changes within the power module.
Use of the CAL:AUTO command reduces the temperature error component of the readback accuracy specification. See
"Chapter 3 - Language Dictionary" of the Programming Guide for information about this command.
Recovering The Factory Calibration Constants
The original factory calibration constants are stored in EPROM and can be recovered. This may prove helpful in situations
where miscalibration is suspected and it is not possible to recalibrate. To restore factory calibration, proceed as follows:
1. Remove the power module from the mainframe and set the calibration switches to the factory position (see Table 2-
1 in "Chapter 2 - Installation").
2. Replace the power module and cycle the power (on and then off).
3. Remove the power module from the mainframe and restore the calibration switches to the normal position.
4. Replace the module in the mainframe.
The module now has its original factory calibration constants. However, password protection has been removed from the
CAL:STAT ON command.
Recovering From A Lost Calibration Password
The standard factory password is the module model number (for example, 66102). If no one has changed the password,
entering the model number will enable the calibration mode (for example, CAL:STAT ON,66102).
If the password is unknown, then the only alternative is to perform the procedure given under "Recovering the Factory
Calibration Constants". This removes the password protection from the CAL: STAT ON command. However, it also
changes the calibration constants to their original factory values.
Calibration Error Messages
If you enter calibration commands from the keyboard, it will display the error messages listed in Table A-4.
Table A-4. Keyboard Calibration Error Messages
CAL ERROR An entered value is not within acceptable range
DOES NOT CAL Computed calibration constant is out of range
PASSWD ERROR You entered an incorrect password
WRONG MODE The power module is not in CV or CC mode, as required
Agilent Basic Calibration Program
The following program can be run on any controller operating under Agilent BASIC. The assumed slot address is 0 and
calibration password is 66101. If required, change these parameters in the appropriate statements.
38 Calibration
10! VOLTAGE CALIBRATION PROGRAM
20! CONNECT INSTRUMENTS AS SHOWN IN FIGURE A-la
30!
40DIM Resp$[255],Err_msg$[255]
50 Volt_cal: !
60Err_found=0
70INPUT "CONNECT INSTRUMENTS AS SHOWN IN FIGURE A-la ... Press any key to continue.” ,Resp$
80Resp$=""
90ASSIGN @Ps TO 70500! ASSIGN POWER SUPPLY GPIB ADDRESS
100! NOTE: DEFAULT MODULE SLOT IS 0
110!
120OUTPUT @Ps;"*RST;OUTPUT ON"! INITIALIZE POWER SUPPLY
130OUTPUT @Ps;"VOLT MAX"
140OUTPUT @Ps;"CURR MAX"
150OUTPUT @Ps;"CAL:STATE ON, 66101"! PASSWORD IS OPTIONAL - ONLY
160! REQUIRED IF SET TO NON-ZERO
170! NOTE: DEFAULT = MODEL NUMBER
180OUTPUT @Ps;"CAL:VOLTAGE:LEVEL MIN"
190INPUT "ENTER VOLTAGE MEASUREMENT FROM EXTERNAL VOLTMETER",Volt_read
200OUTPUT @Ps;"CAL:VOLTAGE ";Volt_read
210OUTPUT @Ps;"CAL:VOLTAGE:LEVEL MAX"
220INPUT "ENTER VOLTAGE MEASUREMENT FROM EXTERNAL VOLTMETER",Volt_read
230OUTPUT @Ps;"CAL:VOLTAGE ";Volt_read
240OUTPUT @Ps;"CAL:VOLTAGE:PROT"! CALIBRATE OVERVOLTAGE PROTECTION
250! CIRCUITRY
260GOSUB Save_cal
270IF Err_found THEN
280INPUT "ERRORS have occurred, REPEAT VOLTAGE CALIBRATION (Y OR N)?",Resp$
290IF TRIM$(UPC$(Resp$[ l,l ]))="Y" THEN GOTO Volt_cal
300END IF
310IF Err_found THEN
320PRINT "VOLTAGE CALIBRATION NOT SAVED"
330ELSE
340PRINT "VOLTAGE CALIBRATION COMPLETE”
350END
360!
370! CURRENT CALIBRATION PROGRAM
380! CONNECT INSTRUMENTS AS SHOWN IN FIGURE A-lb
390!
400Current_cal: !
410Err_found=0
420INPUT "CONNECT INSTRUMENTS AS SHOWN IN FIGURE A-lb ... Press any key to continue.",Resp$
430Resp$=""
440OUTPUT @Ps;"CAL:STATE ON, 66101"! PASSWORD IS OPTIONAL - ONLY
450! REQUIRED IF SET TO NON-ZERO
460! NOTE: DEFAULT = MODEL NUMBER
470!
480! REFER TO TABLE A-1 FOR CORRECT SHUNT VALUE FOR MODEL BEING CALIBRATED
490!
Figure A-2. Agilent BASIC Calibration Program
Calibration 39
500INPUT "ENTER VALUE OF CURRENT SHUNT BEING USED",Shunt_val
510OUTPUT @Ps;"CAL:CURRENT:LEVEL MIN"
520INPUT "ENTER VOLTAGE MEASUREMENT FROM EXTERNAL VOLTMETER",Volt_read
530Current=Volt_read/Shunt_val
540OUTPUT @Ps;"CAL:CURRENT ";Current
550OUTPUT @Ps;"CAL:CURRENT:LEVEL MAX"
560INPUT "ENTER VOLTAGE MEASUREMENT FROM EXTERNAL VOLTMETER",Volt_read
570Current=Volt_read/Shunt_val
580OUTPUT @Ps;"CAL:CURRENT ";Current
590GOSUB Save_cal
600IF Err_found THEN
610INPUT "ERRORS have occurred, REPEAT CURRENT
CALIBRATION (Y OR N)?",Resp$
620IF TRIM$(UPC$(Resp$[ l,l ]))="Y" THEN GOTO
Current_cal
630END IF
640IF Err_found THEN
650PRINT "CURRENT CALIBRATION NOT SAVED"
660ELSE
670PRINT "CURRENT CALIBRATION COMPLETE"
680END IF
690STOP
700 Save_cal:! SAVE CALIBRATION CONSTANTS
710REPEAT
720OUTPUT @Ps;"SYSTEM:ERROR?"
730ENTER @Ps;Err_num,Err_msg$
740IF Err_num<>0 THEN
750PRINT "ERROR: ";Err_msg$
760Err_found=l
770END IF
780UNTIL Err_num=0
790IF NOT Err_found THEN
800INPUT "SAVE CALIBRATION CONSTANTS (Y OR N)?",Resp$
810IF TRIM$(UPC$(Resp$[1,1]))="Y" THEN
820OUTPUT @Ps;"CAL:SAVE"
830END IF
840END IF
850OUTPUT @Ps;"CAL:STATE 0"
860RETURN
870END
Figure A-2. Agilent BASIC Calibration Program (continued)
40 Calibration
Using The Agilent 66001A MPS Keyboard
Introduction
This appendix describes the Agilent 66001A Modular Power System (MPS) Keyboard, which is available as an option for
the Agilent 66000A Modular Power System.
The Agilent 66001A MPS Keyboard lets you program the Agilent 66000A Modular Power System without having to
connect it to a computer. With the keyboard, you can:
■ Access any module in the mainframe that the keyboard is plugged into.
■ Display operating and status information from the selected module.
■ Control the module from the fields that appear on the display.
■ Program the module using SCPI commands and queries.
■ Read error messages.
Connecting The Keyboard
The keyboard plugs into a jack on the front of the mainframe as indicated in the following figure. A keyboard jack is also
available on the rear panel. The keyboard can be plugged in or out while the mainframe is on.
B
NoteDo not connect more than one keyboard to a mainframe.
Agilent 66001A MPS Keyboard 41
Keyboard Description
This section briefly explains the various areas on the keyboard as indicated in the following figure:
Subaddress and
Instrument
Meter Area
Annunciators
Shift
Unr The module is unregulated.
Dis The module’s output is disabled.
Prot One of the protection features has been activated.
Err There is an error message in the SCPI error queue.
Cal Calibration mode is enabled.
Rmt The module is in remote mode (keyboard disabled).
Lsn The module is addressed to listen over the GPIB.
Tlk The module is addressed to talk over the GPIB.
SRQ The module has generated a service request.
The subaddress of the presently selected module appears on the left side of the display. The
instrument field displays an instrument number when the module contains more than one instrument.
Power supply modules do not use this field.
The predominant area of the display presents operating and status information about the selected
module. This is referred to as the meter area of the display. Power supply modules display the
output voltage and current as well as the operating mode in the meter area of the display. Refer to
"Using the Display" for more information.
The meter area is also used to display the SCPI commands when the Command function is active.
Use the meter area to construct the SCPI command and then send the command to the module.
Annunciators on the bottom of the display provide additional information on the operation of the
presently selected module. Active annunciators can indicate:
The
or Lock key has been pressed.
DISPLAY
42 Agilent 60001A MPS Keyboard
([Shift] [Meter])
([Shift] [Command])
([Shift] [Status])
ô SYSTEM KEYS
This key switches from remote operation (over the GPIB) to local operation using the keyboard.
Press
when the Rmt annunciator is on to enable the keyboard.
This key moves the cursor to the subaddress field so you can select another module. Use the Entry
or Select keys to enter another subaddress.
í FUNCTION KEYS
This function continuously displays operating information about the selected module. The Meter
function is the turn-on default function, and is also in effect whenever the mainframe is in remote
mode.
This function lets you send a SCPI command or query to the selected module. Use the letter keys or
the Select keys to select the SCPI command. Refer to the power module Programming Guide for a
complete description of the SCPI commands. Refer to the end of this appendix for the SCPI
command tree used by the keyboard.
This function displays status information about the following QUEStionable and CONDition status
register bits: CV, CC, OV, OC, OT, RT, WTG, and DWE. Refer to the power module
Programming Guide for a complete description of the QUEStionable and CONDition status
registers.
This function displays the error messages whenever the Err annunciator on the display indicates that
an error has occurred.
This function lets you format the meter area of the display. Power supply modules do not use
additional meter formats.
This function lets you send the next command entered from the keypad to all the modules in the
mainframe. The subaddress field on the display indicates "ALL" when this function is active. You
must press
each time you want to send a command to all modules.
This function clears any latched protection features that have tripped.
÷ SELECT KEYS
When the Meter function is active, these keys let you move across the display so that you can enter
or change values in the selected fields. When the Command function is active, these keys let you
move across the various levels of the command tree structure. Numeric command parameters
default either to zero or the last programmed value.
When the Meter function is active, these keys let you increment and decrement the numeric values in
the selected field. When the Command function is active, these keys let you scroll up and down
through the choices at each level of the command tree.
T his key lets you recall up to five previous commands that were sent. You can edit any recalled
command. Press
to send the command.
This key exits any action and returns the display to the Meter function. If the Command function is
active, the displayed command is not executed (same as
).
Agilent 66001A MPS Keyboard 43
û ENTRY KEYS
NoteNothing happens if a letter is pressed that has no corresponding SCPI command.
These keys let you enter numeric values. Values can be entered directly. If the Meter function is
active, the display automatically switches to the Command function with the appropriate command
for programming the metered mode on the display.
This key enters the decimal point.
This key is used to separate multiple command arguments such as those used with a List command.
These keys let you increment and decrement the numeric values in the selected field when the Meter
function is active. Note that numeric values change in larger steps the longer these keys are held
down. When the Command function is active, these keys let you increment and decrement numeric
command parameters.
These keys let you assign a polarity to a value that is entered with the numeric Entry keys. You
must enter the polarity before you enter the number.
This key lets you enter the exponent of a value that is entered with the numeric Entry keys. Enter
the exponent after you enter the number.
This key backspaces over and deletes individual digits in a numeric entry field (same as
).
This key clears the entire numeric entry field.
This key executes a command.
ø LETTER KEYS
These keys let you select SCPI commands when the Command function is active. Letter keys select
the choices that begin with the letter that is pressed and move across the command tree when
additional selections are available.
at the present command level that start with the shifted letter.
This key is the prompt for the SCPI instrument commands.
This key is the prompt for the GPIB commands (IEEE-488.2).
This key is the prompt for SCPI queries. Append the prompt to the query. The result of the query
appears on the display after it is entered.
This key accesses the shifted key functions. The Shift annunciator on the display indicates that the
key was depressed. The annunciator turns off when the next key is pressed.
This key locks the shift key functions. The Shift annunciator on the d isplay indic ates when the shift
functions are locked.
This key backspaces over and deletes individual digits in a numeric entry field (same as ).
This key executes a command.
ed letters make selections by scrolling through the choices
44 Agilent 60001A MPS Keyboard
Using The Display
Changing or Entering Values
The following figure is an example of the keyboard display when a power module is addressed and the Meter function is
active:
The keyboard continuously displays measured voltage and current. The blinking cursor initially highlights the voltage field,
which indicates that the value in that field can be changed using the numeric Entry keys. You can also use the
keys to move the cursor across the display to select other fields that you want to change.
Press
You can also use the numeric Entry keys to enter a new value directly into the field. The display will switch to the
Command function when the numeric Entry keys are used. Enter the new value next to the SCPI command, and execute the
command with the
repeatedly to increment the voltage value.
key.
and
Displaying Status
Use the
RT, WTG, and DWE. A Status mnemonic appears on the display only if the corresponding bit has been set in the status
registers. In the following example, the display indicates that the module is in constant voltage (CV) mode and is waiting
(WTG) for a trigger input.
The status response remains on the display until you press another key to do something else, or until the module goes into
remote mode. Press
key to view the present state of the following status bits of the addressed module: CV, CC, OV, OC, OT,
or to return to the meter function.
Agilent 66001A MPS Keyboard 45
Sending SCPI Commands
As described in the power module Programming Guide, SCPI commands are organized into message units. The keyboard
can only send one message unit at a time; you cannot combine message units. Also, optional headers within a command do
not appear on the display. There are two ways to construct message units using the keyboard:
■ locate and append each SCPI header to the message unit with the Select keys, or
■ directly construct the message using only the first letter of each header with the letter keys.
The figure at the end of this appendix shows the SCPI command tree structure that is used by the keyboard. When the
command function is selected with the
modules.
The Select keys let you move up and down as well as across the various levels of the command tree. When numeric
parameters are accessed with the Select keys, the value either defaults to zero or the last programmed value.
Letter keys let you directly access headers by typing the first letter of the header. Letter keys select headers by moving
across the levels of the command tree. If more than one header starts with the same letter at a specific level in the command
tree, the first choice in that level is selected. Use the
use the
ed letters to scroll through the available choices at the present command level that start with the shifted letter.
Command Example
The following examples show you how to use the Select keys or the letter keys to construct and send commands to the
addressed module. In this example, the voltage protection level of a power supply module is being set to 7 volts.
key, the VOLTage command appears on the display for power supply
or key to select the command you want to use. You can also
46 Agilent 60001A MPS Keyboard
Press to execute the command.
Using the letter keys to directly access and send commands is much faster than using the Select keys to find and then send
commands. Of course, this method is faster only if you know which commands you are going to program. The following
sequence shows the same example using the letter keys:
Press to execute the command.
Query Example
Queries return data from the addressed module. Use the Select keys or the letter keys to construct and send queries to the
addressed module in the same way that you send commands. When you enter the query, the display returns a value. In the
following example, the power module is queried as to its actual voltage output:
Agilent 66001A MPS Keyboard 47
The query response remains on the display until you press another key to do something else, or until the module goes into
remote mode. Press
To query the programmed setting of any command parameter, use the cursor control keys to access the parameter field of
the command. The value that appears is the last programmed value. In the following example, the module is queried as to
its voltage protection setting:
You can now change the voltage protection level or press or to return to the meter function.
or to return to the meter function.
NoteIf a SCPI command has a corresponding query, you can also add the
command into a query. If a command does not have a corresponding query, the key is ignored.
Error Example
If you make an error when you are constructing a command, the display will inform you that an error has occurred when you
enter the command. The following message is an example of an error that has occurred because the data entered for a
parameter was out of the range of the power module.
Either press to recall and edit the command that caused the error or press or to clear the
message and return to the meter function.
With the keyboard, you can also read back any system error that has occurred when the module is operating in remote mode.
The Err annunciator on the display indicates that there is an error in the SCPI error queue. If the module is in remote mode,
you must first press
module is in remote mode:
to get out of remote mode. The following example shows how to read error messages when the
after the command to turn the
48 Agilent 60001A MPS Keyboard
If the Err annunciator is still on after the error message is displayed, it means there are additional error messages in the
SCPI error queue. Press
from the error queue.
to display the other messages. Each time you press the key it removes one error
SCPI Command Tree
The following figure illustrates the SCPI command tree used by the keyboard.
triggers, 10, 33
trigger commands, 33, 49
triggers, initiating, 33
TRIG IN, 10
turn-on state (see power-on state)
U
unregulated operation, 10
V
voltage readback, 22, 32
W
wire size, 21, 23
Index 53
Agilent Sales and Support Offices
For more information about Agilent Technologies test and measurement products, applications, services, and
for a current sales office listing, visit our web site: http://www.agilent.com/find/tmdir
You can also contact one of the following centers and ask for a test and measurement sales representative.
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Agilent Technologies
Test and Measurement Call Center
P.O. Box 4026
Englewood, CO 80155-4026
(tel) 1 800 452 4844
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Agilent Technologies Canada Inc.
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Mississauga, Ontario
L4W 5G1
(tel) 1 877 894 4414
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P.O. Box 999
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5200 Blue Lagoon Drive, Suite #950
Miami, Florida 33126
U.S.A.
(tel) (305) 267 4245
(fax) (305) 267 4286
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(tel) 1-800 629 485 (Australia)
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tel: (852)-3197-7777
fax: (852)-2506-9284
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Agilent Technologies Japan Ltd.
Measurement Assistance Center
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Tokyo 192-8510, Japan
(tel) (81) 426 56 7832
(fax) (81) 426 56 7840
Technical data is subject to change.
54 Agilent Sales and Support Office
Manual Updates
The following updates have been made to this manual since the print revision indica t ed on the title page.
4/15/00
All references to HP have been changed to Agilent.
All references to HP-IB have been changed to GPI B.
6/21/02
The serial numbe r and option number information in chapter 1 has been updated.
9/21/04
The Declara t ion of Conformity has been updated.
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