251TL/351TL User and Programming Manual

251TL/351TL User and Programming Manual
Model 251TL / 351TL
AC Power Source
User and Programming
Manual
Contact Information
Telephone: 800 733 5427 (toll free in North America)
858 450 0085 (direct)
Fax: 858 458 0267
Email:
Domestic Sales: domorders.sd@ametek.com
International Sales: intlorders.sd@ametek.com
Customer Service: service.ppd@ametek.com
Web: www.programmablepower.com
March 2011
Document No. 7351-960 Rev. J
About AMETEK
AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design
and manufacture of precision, programmable power supplies for R&D, test and measurement,
process control, power bus simulation and power conditioning applications across diverse
industrial segments. From bench top supplies to rack-mounted industrial power subsystems,
AMETEK Programmable Power is the proud manufacturer of Elgar, Sorensen, California
Instruments and Power Ten brand power supplies.
AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical
devices with annualized sales of $2.5 billion. The Company has over 11,000 colleagues working
at more than 80 manufacturing facilities and more than 80 sales and service centers in the United
States and around the world.
Trademarks
AMETEK is a registered trademark of AMETEK, Inc.
Other trademarks, registered trademarks, and product names are the property of their respective
owners and are used herein for identification purposes only.
Notice of Copyright
Model 251TL/351TL AC Power Source, User and Programming Manual © 2010 AMETEK
Programmable Power, Inc. All rights reserved.
Exclusion for Documentation
UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER, INC.
(“AMETEK”):
(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY
TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER
DOCUMENTATION.
(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR
EXPENSES, WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL,
WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH
INFORMATION WILL BE ENTIRELY AT THE USER’S RISK, AND
(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH,
ALTHOUGH STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE
TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED AMETEK CONTENT
IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION, WHICH IS POSTED AT
WWW.PROGRAMMABLEPOWER.COM.
Date and Revision
March 2011 Revision J
Part Number
7351-960
Contact Information
Telephone:
Fax:
Email:
Web:
800 733 5427 (toll free in North America)
858 450 0085 (direct)
858 458 0267
sales@programmablepower.com
service@programmablepower.com
www.programmablepower.com
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ii
Important Safety Instructions
Before applying power to the system, verify that your product is configured properly for your
particular application.
Hazardous voltages may be present when covers are removed. Qualified
personnel must use extreme caution when servicing this equipment.
Circuit boards, test points, and output voltages also may be floating above
WARNING (below) chassis ground.
The equipment used contains ESD sensitive ports. When installing
equipment, follow ESD Safety Procedures. Electrostatic discharges might
cause damage to the equipment.
WARNING
Only qualified personnel who deal with attendant hazards in power supplies, are allowed to perform
installation and servicing.
Ensure that the AC power line ground is connected properly to the Power Rack input connector or
chassis. Similarly, other power ground lines including those to application and maintenance
equipment must be grounded properly for both personnel and equipment safety.
Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any
cable.
In normal operation, the operator does not have access to hazardous voltages within the chassis.
However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO
HUMAN SAFETY may be normally generated on the output terminals. The customer/user must
ensure that the output power lines are labeled properly as to the safety hazards and that any
inadvertent contact with hazardous voltages is eliminated.
Guard against risks of electrical shock during open cover checks by not touching any portion of the
electrical circuits. Even when power is off, capacitors may retain an electrical charge. Use safety
glasses during open cover checks to avoid personal injury by any sudden component failure.
Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary
sales organizations can accept any responsibility for personnel, material or inconsequential injury,
loss or damage that results from improper use of the equipment and accessories.
SAFETY SYMBOLS
iii
Product Family: 251TL/351TL
Warranty Period: One Year
WARRANTY TERMS
AMETEK Programmable Power, Inc. (“AMETEK”), provides this written warranty covering the
Product stated above, and if the Buyer discovers and notifies AMETEK in writing of any defect in
material or workmanship within the applicable warranty period stated above, then AMETEK may,
at its option: repair or replace the Product; or issue a credit note for the defective Product; or
provide the Buyer with replacement parts for the Product.
The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in
accordance with the return procedure specified below. AMETEK will, at its expense, deliver the
repaired or replaced Product or parts to the Buyer. Any warranty of AMETEK will not apply if the
Buyer is in default under the Purchase Order Agreement or where the Product or any part
thereof:
is damaged by misuse, accident, negligence or failure to maintain the same as
specified or required by AMETEK;
is damaged by modifications, alterations or attachments thereto which are not
authorized by AMETEK;
is installed or operated contrary to the instructions of AMETEK;
is opened, modified or disassembled in any way without AMETEK’s consent; or
is used in combination with items, articles or materials not authorized by AMETEK.
The Buyer may not assert any claim that the Products are not in conformity with any warranty
until the Buyer has made all payments to AMETEK provided for in the Purchase Order Agreement.
PRODUCT RETURN PROCEDURE
1. Request a Return Material Authorization (RMA) number from the repair facility (must be
done in the country in which it was purchased):
In the USA, contact the AMETEK Repair Department prior to the return of the
product to AMETEK for repair:
Telephone:
800-733-5427, ext. 2295 or ext. 2463 (toll free North America)
858-450-0085, ext. 2295 or ext. 2463 (direct)
Outside the United States, contact the nearest Authorized Service Center
(ASC). A full listing can be found either through your local distributor or our
website, www.programmablepower.com, by clicking Support and going to the
Service Centers tab.
2. When requesting an RMA, have the following information ready:
Model number
Serial number
Description of the problem
NOTE: Unauthorized returns will not be accepted and will be returned at the shipper’s expense.
NOTE: A returned product found upon inspection by AMETEK, to be in specification is subject to
an evaluation fee and applicable freight charges.
iv
Table of Contents
1
Introduction .................................................................................................................................... 1
1.1
1.2
2
Specifications ................................................................................................................................. 2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3
Functional Controls ............................................................................................................................. 23
How to Examples... ............................................................................................................................. 28
Setting the Power on Initialization Values ........................................................................................... 31
Current Limit Modes ............................................................................................................................ 32
Function Strobe [Option] ..................................................................................................................... 33
Remote Inhibit [Option] ....................................................................................................................... 33
External Oscillator Input [Option -EXT] ............................................................................................... 33
Principle of Operation................................................................................................................... 35
5.1
5.2
5.3
5.4
5.5
5.6
5.7
6
Unpacking ........................................................................................................................................... 11
Power Requirements ........................................................................................................................... 11
Input Voltage Range Selection............................................................................................................ 13
Mechanical Installation ........................................................................................................................ 17
Input Wiring ......................................................................................................................................... 17
Output Connections ............................................................................................................................ 17
Output Voltage Ranges ....................................................................................................................... 19
Functional Test.................................................................................................................................... 20
Current Limit - Modes of Operation ..................................................................................................... 22
Front Panel Operation .................................................................................................................. 23
4.1
4.2
4.3
4.4
4.5
4.6
4.7
5
Electrical ............................................................................................................................................... 2
Measurements [Option] ......................................................................................................................... 5
System Specification ............................................................................................................................. 6
Unit Protection....................................................................................................................................... 7
Mechanical ............................................................................................................................................ 7
Environmental ....................................................................................................................................... 8
Regulatory ............................................................................................................................................. 8
Front Panel Controls ............................................................................................................................. 9
Available Options .................................................................................................................................. 9
Installation and Functional Test ................................................................................................... 11
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
General Description .............................................................................................................................. 1
Accessory Equipment/Rack Slides ....................................................................................................... 1
General ............................................................................................................................................... 35
Overall Description .............................................................................................................................. 35
Input Power Supply ............................................................................................................................. 35
Range Relay Board ............................................................................................................................. 39
Amplifier .............................................................................................................................................. 39
Controller Module ................................................................................................................................ 39
IEEE 488/ RS232 Interface [Option] ................................................................................................... 40
Calibration .................................................................................................................................... 42
6.1
6.2
6.3
6.4
Calibration Equipment ......................................................................................................................... 42
Selecting Calibration Mode ................................................................................................................. 43
Routine Calibration.............................................................................................................................. 44
Non-Routine Calibration ...................................................................................................................... 48
v
7
Service ......................................................................................................................................... 55
7.1
7.2
7.3
7.4
8
General ................................................................................................................................................ 55
Basic Operation ................................................................................................................................... 55
Module Removal .................................................................................................................................. 57
Replaceable Parts ............................................................................................................................... 60
Remote Control ............................................................................................................................ 61
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
9
Introduction .......................................................................................................................................... 61
PGUI32 Program Requirements .......................................................................................................... 61
IEEE Interface ..................................................................................................................................... 63
RS232C Interface ................................................................................................................................ 64
PGUI32 Setup and Installation ............................................................................................................ 67
Trouble Shooting - RS232C ................................................................................................................ 69
Trouble Shooting - IEEE-488 / GPIB ................................................................................................... 72
PGUI32 Distribution Files .................................................................................................................... 73
Software Registration .......................................................................................................................... 74
Introduction to SCPI ..................................................................................................................... 75
9.1
9.2
9.3
9.4
9.5
10
Conventions Used in This Manual ....................................................................................................... 75
The SCPI Commands and Messages ................................................................................................. 75
Using Queries ...................................................................................................................................... 78
Structure of a SCPI Message .............................................................................................................. 78
SCPI Data Formats ............................................................................................................................. 81
SCPI Command Reference ...................................................................................................... 82
10.1
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.9
11
Programming Examples ......................................................................................................... 109
11.1
11.2
11.3
12
Subsystem Commands ................................................................................................................... 82
Calibration Subsystem ..................................................................................................................... 83
Measurement Subsystem ................................................................................................................ 87
Source Subsystem .......................................................................................................................... 90
Output Subsystem ........................................................................................................................... 94
Limit Subsystem .............................................................................................................................. 97
Display Subsystem .......................................................................................................................... 99
System Commands ....................................................................................................................... 100
Common Commands ..................................................................................................................... 102
Introduction .................................................................................................................................... 109
Programming the Output ............................................................................................................... 109
Making Measurements .................................................................................................................. 111
Status Registers ..................................................................................................................... 112
12.1
12.2
12.3
12.4
Power-On Conditions .................................................................................................................... 112
Standard Event Status Group ........................................................................................................ 113
Status Byte Register ...................................................................................................................... 113
Examples ....................................................................................................................................... 114
Appendix A : SCPI Command tree .................................................................................................... 115
Appendix B : SCPI Conformance Information ................................................................................... 116
Appendix C: Error Messages ............................................................................................................ 117
Index .................................................................................................................................................. 118
vi
List of Figures
Figure 2-1: Output Power Rating as a Function of Voltage and Load PF ............................................. 4
Figure 3-1: Model 251TL / 351TL AC Power Source .......................................................................... 11
Figure 3-2: Rear Panel View ............................................................................................................... 12
Figure 3-3: Connections to T1 for 105 - 125V Line Input .................................................................... 14
Figure 3-4: Connections to T1 for 210 - 250V Line Input .................................................................... 16
Figure 3-5: Test Setup 351TL ............................................................................................................. 21
Figure 4-1: Front Panel View............................................................................................................... 23
Figure 4-2: Voltage Auto Range Switch Over Points .......................................................................... 25
Figure 4-3: Shuttle Knob .................................................................................................................... 26
Figure 5-1: AC Power System Block Diagram ................................................................................... 37
Figure 6-1: Test Equipment Hookup for Routine Output and Voltage Measurement Calibration ...... 44
Figure 6-2: Test Equipment Hook-up for Current and Power Measurement Calibration .................... 45
Figure 6-3: Internal Adjustments ......................................................................................................... 50
Figure 7-1: Assembly Location ............................................................................................................ 58
Figure 8-1: Rear Panel View ............................................................................................................... 62
Figure 8-2: GPIB Address Selection Switch ........................................................................................ 63
Figure 8-3: RS232C Interface Cable Wiring Diagram ......................................................................... 66
Figure 8-4: DB9 to DB25 Adapter Wiring Diagram ............................................................................. 66
Figure 8-5: System Properties Dialog Box ......................................................................................... 70
Figure 8-6: Advanced Port Settings Dialog Box .................................................................................. 70
Figure 8-7: COM Port Properties Dialog Box ...................................................................................... 70
Figure 8-8: NI AT-GPIB/TNT Settings ................................................................................................ 72
Figure 8-9: NI AT-GPIB/TNT Advanced Settings Dialog.................................................................... 72
Figure 9-1: Partial Command Tree..................................................................................................... 76
Figure 9-2: Command Message Structure ......................................................................................... 78
Figure 12-1: AC Source Status System Model................................................................................. 112
vii
List of Tables
Table 4-1: Factory Default Power on Settings .................................................................................... 31
Table 4-2: -EXT Option DIP Settings .................................................................................................. 34
Table 6-1: Load Resistors and Current .............................................................................................. 42
Table 6-2: CAL Mode Status LED Indicators ...................................................................................... 43
Table 7-1: Basic Symptoms ............................................................................................................... 55
Table 7-2: Poor Output Voltage Accuracy .......................................................................................... 55
Table 7-3: Poor Output Voltage Regulation........................................................................................ 55
Table 7-4: Distorted Output ................................................................................................................ 56
Table 7-5: Unit Shuts Down After 3-5 Seconds .................................................................................. 56
Table 7-6: No Output and No Lights on Front Panel .......................................................................... 56
Table 7-7: No Output But "Display" Is On .......................................................................................... 56
Table 7-8: Replaceable Parts ............................................................................................................. 60
Table 10-1: Mode Command Encoding.............................................................................................. 99
Table 10-2: Bit Configuration of Standard Event Status Enable Register ........................................ 103
Table 10-3: Bit Configuration of Standard Event Status Register .................................................... 104
Table 10-4: *RST Default Parameter Values ................................................................................... 106
Table 10-5: Status Registers - Power on Conditions ....................................................................... 106
Table 10-6: Bit Configuration of Status Byte Register ...................................................................... 108
Table 12-1: Bus Error Messages ...................................................................................................... 117
viii
1
Introduction
This instruction manual contains information on the installation, operation, calibration and
maintenance of the 351TL and 251TL AC power source.
1.1
General Description
The 351TL AC source is a 350 VA programmable AC power source. The 251TL is a 250 VA
version of the power source. In addition to the standard models, several options are
available that may change the voltage and frequency ranges of the power source. This user
manual covers the following models:
Model
Voltage ranges
Max. Current
351TL
135 VRMS
270 VRMS
2.8 ARMS
1.4 ARMS
251TL
135 VRMS
270 VRMS
2.4 ARMS
1.2 ARMS
The output voltage High and Low terminals are isolated from the chassis, and earth ground.
The AC input can be either 105 VRMS to 125 VRMS AC, 210 VRMS to 250 VRMS AC,
91 VRMS to 109 VRMS or 182 VRMS to 217 VRMS at 47 to 67 Hz line frequency.
Simple front panel controls enable the voltage, current limit and frequency to be changed.
An optional RS232C and IEEE 488 interface is available for applications that require remote
control and measurements.
1.2
Accessory Equipment/Rack Slides
General Devices Company Model C300-120-B308 rack slides (option -RMS) may be
attached to the sides of the power source using 10-32 X 3/8 flat head screws.
2
Specifications
All specifications at 23 5 C unless noted otherwise.
2.1
Electrical
Input
115 VRMS nominal, 105 VRMS to 125 VRMS AC
230 VRMS nominal, 210 VRMS to 250 VRMS AC
100 VRMS nominal, 91 VRMS to 109 VRMS
200 VRMS nominal, 182 VRMS to 217 VRMS
Line Voltage:
Unit must be configured for correct Line input voltage.
Line Current:
9 ARMS maximum, line voltage = 115 VAC, full-load
PF = 0.7
Inrush Current:
150 A pk for 115V line
75 A pk for 230V line
Input power factor:
0.7 at full-load and 115 VAC input
Line Frequency:
47 Hz - 67 Hz
Isolation Voltage:
Input to output = 2300 VAC, input to chassis = 1350 VAC
Output
Parameter
Specification
Voltage
2
Range
0 to 135 VRMS or 270 VRMS (standard ranges)
Resolution
0.1 volt
Accuracy
± 0.1 % of calibrated range, 45 Hz - 100 Hz
± 0.2 % of calibrated range, 100 Hz - 5000 Hz
0.3 % of calibrated range, 5000 Hz - 8000 Hz
Load Regulation
0.1 % of FS
0.15% of FS
0.25% of FS
March 2011
< 2000 Hz
2000 – 5000 Hz
> 5000 Hz
TL Series
Parameter
Specification
External Sense
Will compensate for up to 5% of voltage drop up to 2kHz
Line Regulation
0.02 % of FS
Settling time
From start of voltage change from 5.0 VRMS or higher
voltage to within 2% of final value:
No load:
16 msec
Full load: 300 msec
(16 msec to within 15 % of final value)
Distortion (THD
into linear load)
<0.5 % maximum 45 to 499 Hz
<1.0 % above 500 Hz
<2.0% 1000 to 8000Hz
DC Offset voltage
AC Coupled transformer output
Output noise
-73 db typical
( 20 kHz to 1 MHz at full load )
Temperature
coefficient:
± 0.02 % of full scale per degree C
Stability (24 hours)
± 0.015 % of full scale under constant load, line and
temperature
Total Power
PT = 0.7
351TL: 350 VA from 90 to 100% of V range
251TL: 250 VA from 78 to 100% of V range
Current (Refer to Figure 2-1 for derating)
Output
V Range
351TL
251TL
135
270
135
270
Amps rms
2.8
1.4
2.4
1.2
Amps peak
6
3
6
3
Adjustable Limit
0.0 to Maximum available RMS current for selected
voltage range.
Accuracy
Programmed value + 5, -0 % of maximum RMS current
Parameter
Specification
Frequency
Range
351TL
Resolution
Accuracy
16.0 - 8000 Hz
Maximum output voltage available from 45 Hz.
0.01 Hz from 16.00 to 80.00 Hz
0.1 Hz from 80.1 Hz to 800.0 Hz
1 Hz from 801 Hz to 8000 Hz
0.02% of programmed value
Temperature
coefficient
± 5 ppm per degree Celsius
Stability
± 15 ppm per year
Figure 2-1: Output Power Rating as a Function of Voltage and Load PF
4
March 2011
TL Series
2.2
Measurements [Option]
Parameter
Specification
Unit
Available on standard unit.
True RMS Current
Range
0.000 - 4.000
Accuracy
ARMS
0.2 % FS + 0.3 % reading
Resolution
0.001
ARMS
Temp
Coefficients
0.016
% FS / C
Peak Current Requires Option -OP1
0.00 – 12.00
Range
Accuracy
APEAK
0.5 % FS + 0.5 % reading
Resolution
0.01
APEAK
Available over bus only. Requires interface Option -OP1
Crest Factor
Range
0.00 - 4.00
Accuracy
0.05
Resolution
0.01
True RMS Voltage Standard Unit: Available over bus only.
-OP1 option: Front Panel and bus.
Range
0.0 - 300.0
Accuracy
VRMS
0.1 % FS + 0.05 % reading
Resolution
0.1
VRMS
Temp
Coefficients
0.05
V/ C
Real Power Requires Option -OP1
Range
0 - 400.0
Accuracy
0.2 % FS + 0.5 % reading
Resolution
0.2
W
Temp
Coefficients
0.06
% FS / C
Available over bus only. Requires -OP1 option
Apparent Power
Range
Accuracy
Resolution
Power Factor
W
(Remote only) 0 - 400.0
0.3 % FS + 0.8 % reading
2
Requires -OP1 option
Range
Resolution
VA
0.00 - 1.00
0..01
VA
2.3
System Specification
Parameter
Specification
Setup storage
Eight non volatile front panel setup registers available through
interface. Power on setting register available from front panel.
Interface
(Option package -OP1 required)
RS-232C
Bi-directional serial interface
IEEE-488
Remote Inhibit
Function Strobe
6
Rear panel connector:
9 pin D shell
Handshake:
CTS, RTS
Data bits:
8
Stop bits:
1
Parity:
None
Baud rate:
19200
Command syntax:
IEEE 488.2 commands and SCPI
GPIB Interface
Rear panel connector:
24 pin D-shell
IEEE address:
set using dip switch on rear panel from
0 to 31
IEEE functions:
SH1, AH1, T8, L4, RL2, SRQ 0, PP 0,
DC 0, DT 0, C0
Terminators:
LF, CRLF, EOI
Command syntax:
IEEE 488.2 commands and SCPI
(Option package -OP1 required)
Rear panel connector:
BNC
Input
Contact closure to ground or logic low TTL
signal required to turn off output.
Automatic recovery when RI signal is
removed.
(Option package -OP1 required)
Rear panel connector:
BNC
Output
Active low TTL signal. Signal driven low for
approximately 400 sec any time output
voltage or frequency programmed value
changes. Signal level may be changed by
removing jumpers to open collector.
March 2011
TL Series
2.4
2.5
Unit Protection
Parameter
Specification
Input Overcurrent:
Electronic current limit with circuit breaker.
Transients:
Surge protection to withstand EN50082-1 (IEC 801-4, 5) levels.
Output Overcurrent:
Constant current operation. (Standard)
0.1 Second shutdown (constant voltage mode Option)
Output Short Circuit:
Peak current limit.
Shutdown (constant voltage mode Option).
Overtemperature:
Automatic shutdown.
Mechanical
Parameter
Specification
Dimensions:
Height
Width
Depth
Unit
13.26
48.26
56.62
cm
5.22
19
22.29
inches
Unit Weight:
34 Kg / 75 lbs
Material:
Steel chassis and panels.
Aluminum cover.
Finish:
Yellow iridite, painted semi-gloss polyurethane
Cooling:
Fan cooled with air intake on the sides and exhaust to the rear.
Internal Construction:
Modular sub assemblies.
Chassis Slides:
P/N 210960 / Option -RMS
General Devices Model CTS-1-20-B307-2
Rear Panel Mounted Connectors:
RS232C I/F
DB 9
IEEE-488 I/F
D-shell 24 pin
Remote Inhibit
BNC (requires -OP1 option package)
Function Strobe
BNC (requires -OP1 option package)
AC Output
Amp 1-480705-1
External Sense
Amp 1-480705-1
Line Input
Kulka 9-85-3 Terminal block
2.6
2.7
Environmental
Parameter
Specification
Operating Temp:
0 degrees to + 40 degrees Celsius.
Storage Temp:
- 40 degrees to + 85 degrees Celsius.
Humidity:
Operating:
Storage:
90% RH up to 40 C., non condensing
90% RH up to 40 C, 75% RH up to 70 C.
Altitude
Operating:
VA Power:
15000 feet / 6000 meters maximum.
Full VA power output :0 - 6000 feet / 0 - 2000
meters.
Derate VA power 5 % per 1000 feet from 6000 to
15000 feet / 2000 to 6000 meters.
Creepage and
Clearance:
Rated for Pollution Degree 2.
Insulation:
Rated to Installation Category (Overvoltage Category) II
Vibration:
Designed to meet NSTA 1A transportation levels.
Shock:
Designed to meet NSTA 1A transportation levels.
Regulatory
Parameter
Specification
Electromagnetic
Emissions and
Immunity:
Designed to EN50081-1 and EN50082-1 European Emissions
and Immunity standards as required for the “CE” marking.
Acoustic Noise:
65 dBA maximum at 0% to 50% load, 75 dBA maximum greater
than 50% load to 100% load. Measured at one meter.
Safety:
Designed to EN61010-1 European safety standards as required
for the “CE” marking.
Remote Control
8
March 2011
TL Series
2.8
Front Panel Controls
Parameter
Specification
Controls:
Shuttle knobs:
Allows continuous change of Voltage, Frequency and Current
limit. Voltage change is inactive on single voltage range
configuration units.
Function keys:
Controls Output state, Voltage range and Display mode.
2.9
Displays:
Two, 4 digits, 0.5” 7 segment LED display. For viewing
programmed voltage, frequency, current limit and for displaying
measured current.
Status Indicators:
10 LEDs to indicate:
REMOTE, FAULT, OUTPUT (ON/OFF), VOLTAGE RANGE
HIGH, VOLTAGE RANGE AUTO
FREQUENCY, CURRENT, PEAK CURRENT, POWER, POWER
FACTOR DISPLAY MODES (Refer to paragraph 4.1.2).
Available Options1
Option
Description
-OP1
Option package 1 includes:
Measurement Functions
Combined IEEE-488 / RS232C interface.
Remote Inhibit Input
Function Strobe Output
Note: Not available with -EXT option.
-RMS
Rack mount slides
P/N 211045 / Option -RMS
General Devices Model C300S-120-B308
-SKT
This option is no longer available.
-EXT
Removes controller and allows external oscillator input.
Note: Not available with -OP1 option.
A standard BNC connector on the rear panel is provided to
connect the external input signal. This BNC input replaces the
Remote Inhibit BNC found on standard TL models.
Input range:
1
0.0 - 5.0 VRMS AC in for 0 - FS Voltage
out.
Output voltage FS range is factory
configured for either 135 V or 270 V. Check
type sticker for V range set.
Additional options may have been made available since this manual revision. Installed options are listed on
the power source‟s type sticker. A manual addendum may be issued for new options not covered by this
manual.
Option
Description
Impedance:
Frequency range:
Output V Range
selection:
10
March 2011
10 kOhm
45 Hz - 8000 Hz
Internal DIP switch setting. Located on A1
Amp assy. Requires removal of top cover
to change output ranges.
If changed, amplifier gain must be adjusted
(R8) on mother board for 5 V in to FS out.
TL Series
3
Installation and Functional Test
3.1
Unpacking
Inspect the unit for any possible shipping damage immediately upon receipt. If damage is
evident, notify the carrier. DO NOT return an instrument to the factory without prior
approval. Do not destroy the packing container until the unit has been inspected for damage
in shipment.
3.2
Power Requirements
The AC Power System has been designed to operate from a single phase AC line voltage.
The nominal operating voltage is 100V, 115V, 200V or 230V line input. The Power Source
line input setting is shown on the type sticker located on the rear panel.
Figure 3-1: Model 251TL / 351TL AC Power Source
WARNING:
Do not connect the unit to a 400-480 service, as the result will be a severely
damaged unit.
Do not connect the unit to AC line input unless the nominal line input settings
match those of the available AC line voltage.
3.2.1 AC Line Voltage
The AC Power Source has been designed to operate from either of the following AC line
voltage ranges:
1)
2)
3)
4)
91 to 109 VRMS
82 to 217 VRMS
105 to 125 VRMS
210 to 250 VRMS
CAUTION:
The AC Power Source will be damaged if it is operated at an input voltage
that is outside its configured input range.
The input voltage range is set at the factory. Section 3.3 gives the procedure to change the
input voltage range. The location for connection of the INPUT line is shown in Figure 3-2.
3.2.2 Line Frequency Operating Range
The AC Power Source has been designed to operate with a line frequency from 47Hz to
67 Hz.
3.2.3 Input Power
The input power to the AC Power Source depends upon line and load conditions and may be
as high as 1000 watts.
Figure 3-2: Rear Panel View
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TL Series
3.3
Input Voltage Range Selection
WARNING:
The line voltage is present in certain sections of this Power Source.
DEATH:
On contact may result if personnel fail to observe safety precautions.
Do not touch electric circuits when power is applied. Servicing should
only be performed by trained personnel.
The input voltage range is configured by changing the taps on the input transformer. See
Figure 3-3 or Figure 3-4 for the location of the jumpers and input wires.
3.3.1 Voltage Range Configuration (105 – 125 V)
In order to change the voltage range configuration:
1.
Turn off the input circuit breaker.
2.
Disconnect AC input power to the source by unplugging the power cord.
3.
Remove the AC Power Source top cover by removing (14) #6-32 x 5/16” FLH
screws. There are 7 screws on the sides and 7 screws on the top that hold the
cover.
4
5
Remove the (2) #6-32 x 1” PHN screws and lock washers that hold the amplifier near
the outside panel.
Remove the (2) #6-32 x 3/8” PHN screws and lock washers located near the
connector, attaching the red insulator to the center bracket.
The line input voltage range is set by the configuration of the Input Transformer, T1. To
configure T1 for the 105-125 volt range, make the following connections to T1 (refer to
Figure 3-3) :
Jumper terminals 1 and 4.
Jumper terminals 3 and 6.
Connect the input line from the Circuit Breaker to Terminals 1 and 6.
Figure 3-3: Connections to T1 for 105 - 125V Line Input
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3.3.2 High Input Voltage Range Configuration (210 – 250 V)
In order to change the voltage range configuration:
1.
Turn off the input circuit breaker.
2.
Disconnect AC input power at TB1.
3.
Remove the AC Power Source top cover by removing (14) #6-32 x 5/16” FLH
screws. There are a total of 7 screws on the sides and another 7 screws on the top
that secure the top cover.
The line input voltage range is set by the configuration of the Input Transformer, T1. To
configure T1 for the 210-250 volt range, make the following connections to T1 (refer to
Figure 3-4).
Jumper terminals 3 and 4.
Connect the input line from the Circuit Breaker to Terminals 1 and 6.
Remove all other connections to Terminals 1 through 6.
Figure 3-4: Connections to T1 for 210 - 250V Line Input
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3.4
Mechanical Installation
The power source has been designed for rack mounting in a standard 19 inch rack. The unit
must be supported from the sides with optional rack slides. See Accessory Equipment/Rack
Slides in Section 1.2. The cooling fan at the rear of the unit must be free of any obstructions
which would interfere with the flow of air. A 2.5 inch (6.35cm) clearance should be
maintained between the rear of the unit and the rear panel of the mounting cabinet. Keep in
mind that adequate ventilation of the mounting cabinet must be maintained for sufficient
cooling of the power source. Use louvered side panels, and/or perforated rear panels to
assure adequate airflow. Also, the air intake holes on the sides of the power source must not
be obstructed when mounted inside cabinet. See Figure 3-1.
3.5
Input Wiring
The AC Power Source must be operated from a three-wire single-phase service. The mains
source must have a current rating greater than or equal to 10 A for the low input range. Use
the supplied safety cover/strain relief when connecting the input wires to the power source.
Refer to
Figure 3-2 for the input power connections. When connecting the input wires to input
terminal block, make sure the safety grounding wire from the strain relief grommet is longer
than the Line and Neutral wire so that the ground wire will be the last one to take any strain.
For low-range input operation (115V) we recommend #12 AWG input wires as a minimum.
For high-range input operation (230V) #14AWG is recommended. For European
applications (230V), the following input cordset may also be used:
Panel Components # 86518030 Rated 16A, 250V, 70 C, 3x 1.5mm² conductor size. VDE
approved. Install as described above for discreet wiring.
3.6
Output Connections
The output terminal block is located at the rear of the power source. All load connections
must be made on the rear panel terminal block. The remote sense inputs are normally
jumpered directly to the adjacent power output pins on the output connector. If the sense
terminals are not connected to the power output pins, the output voltage may rise significantly
above the programmed value. When connecting the output wires, use the supplied safety
cover/strain relief and mount over the output connector. Also mount the supplied snap-on
ferrite filter around the output wiring between the output terminals and the strain relief
grommet. Enclose ferrite filter with the safety cover.
If the load is a significant distance from the output terminal strip it may be desirable to sense
the output voltage directly at the load. If remote sensing is to be used, then the size of the
output power wiring must be heavy enough to prevent a voltage difference greater than 7% of
the programmed value from the power output pins to the sense input pins.
The Remote Sense inputs must be connected or an output voltage 7% higher than the
programmed output will be generated. If the Power Source is configured for constant
voltage, a fault will be generated.
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3.7
Output Voltage Ranges
The standard 351TL AC power source has two output voltage ranges 0-135 VAC and
0-270 VAC. The operator may switch from one range to the other at will with no special
precautions except to remember that the output voltage will go to zero voltage whenever a
range change takes place.
Certain options available on the 351TL series may result in different voltage range values or
a single voltage range only. Certain models may be ordered with a single voltage range only.
On single voltage range units, the Range change button has no function and the LED
indicator is not used.
351TL AC power source models with dual voltage ranges offer an auto voltage range change
mode. In this mode, the voltage range is automatically changed when the user sets a
voltage above 135 or below 131 VRMS.
The AUTO mode can be selected by pressing the range change button until the AUTO mode
LED illuminates. To take the AC power source out of the AUTO voltage range mode, press
the Voltage range button briefly. This will put the unit in the present range but takes it out of
auto mode.
Note:
Even in AUTO mode, the output temporarily goes to zero volts when a
voltage range change occurs. If this is not acceptable, the AC source
should be operated in the high voltage range only and not in AUTO
mode.
3.8
Functional Test
CAUTION:
Work carefully when performing these tests - hazardous voltages are
present on the input and output during this test.
Refer to Figure 3-5 for the test set up. Use the following load resistor values:
Model
351TL
251TL
Voltage Range
135
270
135
270
Resistor
52
208
72.9
292
Current (ARMS)
2.60
1.30
1.85
.92
1. Connect an oscilloscope, voltmeter and/or distortion analyzer to the AC source output at
the rear panel output terminal.
2. Connect the AC power input voltage connections to the AC source input terminals.
Connect the sense input to the adjacent power pin on the rear panel connector. Turn on
the power switch located at the rear panel.
3. Verify that the front panel 7 segment LED displays read out the initial start up voltage and
frequency.
4. Select the low voltage range. Set the frequency to 60 Hz with the right shuttle. Select the
current function with the Frequency/Current selector. Set the current limit to the
maximum value using the right shuttle. Set the output voltage to 135V with the left
shuttle.
5. Enable the output by pressing the output “on/off” button in the top right of the front panel.
The green LED above the button will illuminate when the output is on. The output should
be a clean 135V AC sinewave having less than 0.5 % distortion.
6. Apply full load (refer to table on Figure 3-5) to the output of the source and verify the
output remains within 0.05 % of the initial 135V . The output should still be clean and the
distortion should still be less than 0.5 % at 60 Hz.
7. Using the right shuttle set the output current limit value to 2 amps (1 amp for the 251TL).
If the unit is configured for Constant Current mode, the system should go into current
limit and reduce the output voltage. This may create additional distortion on the output
voltage. If the unit is configured for Constant Voltage mode (factory default), an error
message will appear on the display (err. -300) that indicates an output fault condition and
the output will go off. Return the current value to the maximum current and disconnect
the load.
8. Repeat steps 4 through 7 but set the output for the following: Hi voltage range and the
current limit to maximum value. Refer to the table above for the relevant resistor values.
For units that are factory configured with a single voltage range, these steps do not have
to be repeated.
In the event the power source does not pass the functional test, refer to the calibration
procedure in Section 6 or call California Instrument‟s customer satisfaction department for
further assistance.
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Figure 3-5: Test Setup 351TL
3.9
Current Limit - Modes of Operation
When the Power Source is shipped from the factory, it is configured for the Constant Current
Mode of operation. This mode means if the load current exceeds the programmed Current
Limit value, the output current will continue at the programmed value.
The Power Source can be configured to operate in the Constant Voltage mode. In this mode
of operation, if the load current exceeds the Current Limit value, the output voltage will
default with the output relay open. The Constant Voltage mode is only usable if the default
voltage is set for 5.0 volts. If the default is any other voltage, the power source may display a
fault at power up.
To configure the Power Source, remove the input line voltage connection from the rear
panel. Remove the top cover. Install jumpers W1 and W2 on the front panel controller.
Reinstall the top cover.
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4
Front Panel Operation
4.1
Functional Controls
The front panel can be divided in a small number of functional areas:
Output Sockets
Status Indicator lights
Shuttle knobs
1
LED display
Button controls
Figure 4-1: Front Panel View
Note:
This chapter does not apply if the -EXT option is installed. The -EXT
option allows an external user provided oscillator signal to be used. In
this case, the front panel has no controls.
4.1.1 Dual Outlet Socket (Option -SKT)
This option has been discontinued and is no longer available on the 251TL or 351TL.
1 Note: Units shipped prior to October 2005 used LCD displays. No functional differences exist between unit
with LCD or LED display types.
4.1.2 Status Indicator Lights
Ten LED status indicators are located directly above the LED display. These LED‟s
correspond to the following conditions:
24
REMOTE
The REMOTE LED indicates that the unit is in remote
control mode. If the RS232C interface is used, the REMOTE
state can be enabled by the controller using the SYST:REM
command. Any time the REMOTE LED is lit, the front panel
of the RP Series unit is disabled. There is no LOCAL button
that allows the user to regain control of the front panel. The
SYST:LOC command will enable the front panel controls.
When using IEEE, the remote /local state is controlled by
the REN (Remote Enable) interface line.
FAULT
The FAULT LED indicates an overtemperature condition.
Overtemperature is usually caused by poor air flow. Check
the air flow exhaust at the rear of the unit to make sure it is
not obstructed. If the power source is configured for
constant voltage, the indicator will illuminate for loss of
sense lines or an overload condition.
OUTPUT
The Output LED indicates the status of the OUTPUT relay.
The output relay is controlled by the OUTPUT ON/OFF
button located directly below the LED. When the Output
LED is not lit, the output voltage is not present at the output
socket regardless of the voltage setting.
RANGE - HIGH
The Range High LED indicates the selected output voltage
range. When it is illuminated it indicates the high voltage
range has been programmed. Any time the user switches
voltage ranges, the output is programmed to zero volt. The
output relay state is not changed however.
RANGE - AUTO
The Range AUTO LED indicates the Power Source is in
auto ranging mode and will switch voltage range
automatically if the selected output voltage increments or
decrements through the low range voltage limit. (135 VRMS
on standard units). During a range change, the output
voltage will be programmed to zero momentarily. Some
hysteresis is provided. See Figure 4-2.
FREQ
Illuminates when the LED display shows the programmed
frequency. In the calibration mode this indicator is not
illuminated for calibrating the output voltage. When it is
illuminated in the calibration mode the voltage measurement
can be calibrated.
I RMS
Illuminates when the LED displays shows the programmed
current limit, measured current values, or current
measurement calibration.
I PK
Illuminates when the LED displays shows the measured
peak current or peak current calibration. See Note.
PWR
Illuminates when the LED displays shows the measured
power or power calibration. See Note.
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PF
Illuminates when the LED displays shows the measured
power factor. It also illuminates in the calibration mode of
operation. In calibration mode, the PF LED is always lit in
combination with the measurement or output junction being
calibrated. In normal mode of operation, only one LED in
this group is on at a time. See Note.
Note: For peak current, power and power factor measurements, Option -OP1 is required. If
this option is not installed, these functions are not available and the SELECT button will only
toggle between FREQ and CURR modes.
270
HIGH
Low to High switch-over
135
Hysteresis
131
0
High to Low switch-over
LOW
Figure 4-2: Voltage Auto Range Switch Over Points
4.1.3 Shuttle knobs
Counter
clockwise
Clockwise
DECREASE
INCREASE
Figure 4-3: Shuttle Knob
There are two shuttle knobs located below the LED display which are used to change setup
parameters for voltage, frequency and current limit. The SELECT button selects the function
of the right shuttle. The right shuttle will control either the frequency or the current limit as
indicated by the indicator above the right LED. The left shuttle always controls the voltage.
4.1.4 Buttons
There are three function buttons for the Output Voltage Range, Output State and Shuttle
Mode. The following is a description of these buttons:
26
KEY
DESCRIPTION
RANGE
The RANGE button is used to change the voltage range
between the low range (0 to 135 volts) and high range (0 to
300, 270 or 230 volts). The LED above the switch will light
to indicate the high voltage range selection. The output
voltage will be reset to zero voltage after a range change. If
the Power Source is configured for a single voltage
range, this button is disabled.
The same button may be used to put the Power Source in
the AUTO voltage range change mode. This button toggles
from Lo, Auto, Hi and back to Lo. The AUTO LED will
illuminate when the AUTO range mode is enabled. While in
AUTO mode, the Power Source will switch to the high range
whenever a value larger than the low range limit is
programmed. Whenever a value below the low range limit is
programmed, the unit will switch to the low voltage range.
The output is momentarily interrupted when a range change
occurs.
To take the unit out of AUTO mode, press the RANGE
button again.
OUTPUT
The OUTPUT button will toggle the output relay to connect
or disconnect the output. The LED above the button will
light when the output relay is closed. No output voltage will
be present when the OUTPUT button is off despite the level
of voltage programmed.
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SELECT
The SELECT button selects the function of the right Shuttle
knob and the LED display. The Shuttle will control the
output frequency and the display will show the program
frequency value when the mode selection is frequency. The
Shuttle knob will program the current limit and the display
will show its value in the current mode. The display will
revert back to showing the measured current after 3
seconds from the last movement of the shuttle.
The SELECT button also allows selection of the desired
measurement function readout. Available selections are:
Current (Also puts the shuttle in Current Limit set mode)
Peak Current
Power
Power Factor
Measurements are updated 4 times per second. The
display mode is indicated by the LED‟s above the LED
display. Note that voltage measurements are available
through the Voltage LED.
(CAL)
There is a switch behind this hole in the front panel. When
the switch is depressed with the proper tool, the PF indicator
will illuminate to indicate the calibration mode has been
selected. The table below shows the calibration mode LED
indications after the (CAL) button is depressed.
Output voltage
INDICATORS
ILLUMINATED
PF only
Voltage measurement
PF and FREQ
Current measurement
PF and IRMS
Peak current measurement
PF and IPK
Power measurement
PF and PWR
CALIBRATE
4.1.5 LED Segment Displays
1
Settings and measurements are shown on two 4 digit, 7 segment displays . The voltage
display shows the programmed voltage as the user turns the left knob. After releasing the
knob for about 3 seconds, this display reverts back to displaying the measured output
voltage. The right hand LED display is a multi purpose display. For setup purposes, it
displays either Frequency or Current limit settings. After about 3 seconds on inactivity, this
display switches to the selected measurement parameter. The SELECT button will define
the operating mode or the selected measurement parameter for the right hand display.
1
Note: Units shipped prior to October 2005 used LCD displays. No functional differences exist between unit
with LCD or LED display types.
4.2
How to Examples...
This section covers some common tasks that are often performed with an AC power source.
These examples are written in a How to... format and provide step by step instructions on
how to set up the AC Source for a specific task.
4.2.1 Set the Output
Output parameters are Voltage, Frequency and Current Limit.
1. Disable the output by pressing the OUTPUT button. The LED above the button will turn
off.
2. Use the left shuttle to set the output voltage. Clockwise will increase the output, counter
clockwise will reduce the output. The display above the shuttle will show the voltage
setting.
3. Use the right shuttle to set the frequency and current limit. The SELECT button will
define the function of the shuttle and the display above it. The Frequency or Current LED
will turn on to indicate the function controlled by the right shuttle.
4. Enable the output by pressing the OUTPUT button.
4.2.2 Slew Output Values
The output parameters can be slewed using the shuttles.
1. Enable the output by pressing the OUTPUT button. The LED above it will turn on.
2. Use the left shuttle to set the output voltage. Clockwise will increase the output, counter
clockwise will reduce the output. The display above the shuttle will show the voltage
setting.
3. Use the right shuttle to set the frequency and current limit. The SELECT button will
define the function of the shuttle as indicated by the display above it. The LED‟s located
above the display will indicate the selected function.
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4.2.3 Display Measurement Data
Measurements can be called up as follows:
1. For voltage, the left display always displays the measured output voltage unless the
knob is turned. As the knob is turned, the programmed voltage will be displayed
instead. After releasing the knob for about 3 seconds, the display reverts back to the
measured voltage.
2. All other measurements can be displayed by using the SELECT button to toggle
through the available measurements. The individual LED‟s above the 7 segment
LED display indicate the current selection. The knob only affects programmed
frequency and current limit.
3. Moving the right shuttle knob will interrupt the select measurement and put the
display back in Current Limit adjust mode.
Note: For peak current, power and power factor measurements, Option -OP1 is required.
4.2.4 Change the Voltage
The voltage range can be changed as follows (If the Power Source is configured for a single
voltage range, this does not apply):
1. Press the RANGE button located in the upper left corner. The output voltage will
reset to 0 volts.
2. Use the left shuttle knob to set the output voltage.
The AUTO voltage range can be selected as follows:
3. Press the RANGE button located in the upper left corner. The AUTO LED will
illuminate. The AC source is now in Auto range mode. Turn the left shuttle knob to a
value above 135 V. The unit will switch to high range and the HIGH LED will
illuminate.
4. Turn the left shuttle knob to reduce the voltage to a value below 135 V. The AC
source will switch to the low voltage range and the HIGH LED will turn off.
To turn off the AUTO voltage range, proceed as follows:
5. Press the RANGE button. This puts the AC source back in normal mode. The
voltage range that was in effect does not change. The AUTO LED will turn off.
6. Press the RANGE button again to toggle voltage ranges.
4.2.5 Control the Output
The Output can be disabled or enabled using the ON/OFF button as follows:
1. Pressing the OUTPUT button when the output LED is on will open the AC source output
relay. The programmed voltage setting will remain at the last program value.
2. Pressing the OUTPUT button again will close the output relay and the output will revert to
the last programmed value.
4.2.6 Measure Peak Inrush Current (Requires -OP1 Option)
The peak current measurement function of the Power Source uses a sample and hold circuit
to track the highest peak current found until reset. The peak current sample and hold circuit
is reset any time the user toggles away from the peak current display mode to a different
measurement.
The peak inrush current for a unit under test can be measured using this function as follows:
1. Program the output to zero volts and open the output relay using the ON/OFF button.
2. Use the SELECT button to display the present peak current value.
3. Use the SELECT button again to toggle to any other measurement readout. This will
effectively reset the peak current sample and hold circuit to zero amps.
4. Use the left shuttle knob to set the voltage to the nominal supply voltage of the unit under
test.
5. Use the ON/OFF button to apply the programmed voltage to the unit under test.
6. Use the SELECT button to display the measured peak current value.
Note:
30
The 351TL output is turned on at random phase angle. It may be
necessary to repeat this test to find the highest possible peak inrush
current demanded by the unit under test.
Phase angle control is available over the bus if the –OP1 option
package with IEEE-488/RS232C interface is installed.
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4.3
Setting the Power on Initialization Values
The Power Source is supplied with default factory settings when the unit is powered up. The
factory settings are:
Parameter
Factory default setting
Voltage range
Low
Auto Voltage Range
OFF
Voltage
5.0 Volt
Frequency
60 Hz
Current limit
2.8 amps
Display mode
Frequency
Output Relay state
OFF
Output start state
OFF
Output start phase
0 degrees
Local / Remote State
Local. Front panel unlocked.
Table 4-1: Factory Default Power on Settings
It is possible to change the power on initialization values in one of two ways:
1. Using the optional RS232 or IEEE-488 interface and the supplied PGUI32 program.
2. Using the front panel.
To change the power on initialization values from the front panel, proceed as follows:
1. Set the unit up in the desired way from the front. (Range, voltage, frequency, current
limit, output relay state, display mode).
2. Press and hold the SELECT key (normally toggles LED display mode). Make sure the
correct indicator LED is illuminated, e.g., FREQ to display voltage and frequency.
3. While holding the SELECT key, press the OUTPUT ON/OFF key. This will save the
present front panel settings in non volatile memory register (NVM) no 7 and assign this
register as the power on register.
4. Release both keys. Note that as step 2 is executed, the display mode will toggle . This
means the display mode after power up is different from how the unit was set up. To
avoid this, just toggle the display till one position before the desired power on mode first
and then execute steps 2-4.
5. This procedure can be repeated as often as needed by the user.
4.4
Current Limit Modes
The Power Source supports two modes of current limiting. In either mode, the end user can
set the RMS current level at which the current limit function will kick in. The available current
limit modes are:
Constant Current (CC) mode
This is the default mode as supplied from the
factory. In this mode of operation, the output
voltage is automatically reduced by the AC power
source to maintain the set current. Once the
current drawn drops below the set limit value, the
voltage is increased again. No error message is
generated in this mode of operation. This mode
is suitable for starting up loads that require high
inrush currents but don‟t need full nominal voltage
to run. (example AC motors).
Constant Voltage (CV) mode
In this mode of operation, the output of the AC
source is turned off and the programmed voltage
is set to 0 volt as soon as the load current
exceeds the set current limit value. (Trip current).
The selected current limit mode may be changed by moving a jumper on the AC power
source controller board. This requires that the AC source is disconnected from the AC line
and the top cover is removed. The current mode jumper is located at the top of the controller
board which is directly behind the front panel.
32
MODE
JUMPERS
CC
CV
W1 and W2 Removed
W1 and W2 Installed
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4.5
Function Strobe [Option]
The Function Strobe (FS) is a TTL logic level signal provided at the rear panel of the Power
Source. This signal is synchronized to any voltage and frequency output changes of the AC
source and may be used to trigger external test equipment such as oscilloscopes.
Default mode of operation
The function strobe is an active low TTL output signal. Each sync pulse lasts approximately
400 sec . The output changes on the falling edge of the function strobe output.
Alternative mode of operation
The function strobe output logic uses the GPIB interface DC supply to provide the required
logic levels. If the GPIB interface is connected to the user‟s PC, excessive ground noise may
prevent the function strobe from operating correctly. If this is the case, the output mode of the
function strobe may be changed to provide an open collector output instead. In this case, the
end user has to provide an external DC power supply and pull-up. A 9 Volt DC battery may
be used for this purpose. Contact California Instruments‟ service department for details on
changing the operation of the FS output.
4.6
Remote Inhibit [Option]
A Remote Inhibit BNC input is located on the rear panel of the Power Source if the -OP1
option was specified at the time of purchase. This input may be used to kill the AC source
output using an external control signal.
Default mode of operation
If the Remote Inhibit input is left unconnected, the output of the AC source can be turned on
using the ON/OFF button on the front panel or the appropriate bus command. To disable the
output relay, a logic low level or a contact closure needs to be present across the terminals of
the BNC (RI) connector.
Typical use of the RI input is in rack and stack systems where the RI input is wired to a
switch that detects removal of the rear panel. This input may also be used to simultaneously
shut down multiple AC power sources.
Note that the RI input has an internal pull up resistor to TTL logic high. When the RI input
cable is disconnected, the output will recover and the output relay will be closed
automatically.
4.7
External Oscillator Input [Option -EXT]
An external oscillator input may be used in lieu of the built in controller if the TL is order with
the -EXT option. Installing this option implies that the internal controller is removed and a
blank front panel is used instead. In this configuration, there are no front panel controls and
or measurements.
When turned on, the Fan will run but no other indication of power on is provided other than
the position of the AC line switch.
External Input signal
The output range with the -EXT option will be fixed at either 135V or 270V. This is
determined by the S3 Dip switch on the mother board. The desired output voltage range
must be specified at the time of order. It is noted on the model type sticker (serial tag). To
change this setting, the top cover must be removed. Contact customer service
(support@calinst.com) before attempting to change these settings.
Default settings are shown in BOLD.
S3
Position
ON
OFF
1
270V Range
135V Range
2
-EXT input
Internal Oscillator
3
Output relay Open
Output relay Closed
4
Internal Oscillator
-EXT input
Table 4-2: -EXT Option DIP Settings
The external input signal must be an AC voltage waveform with an RMS value as follows:
0.0 to 5.0 VRMS for 0.0 to Full Scale VRMS output.
Note: Do not apply more than 5.0 Vrms to the EXT input as the output transformer will
saturate.
An External input BNC connector is located on the rear panel. This BNC input replaced the
Remote Inhibit BNC normally found on the 251/351TL without the –EXT option.
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TL Series
5
Principle of Operation
5.1
General
An explanation of the circuits in the AC Source is given in this section. Refer to block
diagram in Figure 5-1.
5.2
Overall Description
Input power at the rear panel is routed through the circuit breaker to the input transformer.
The DC supply outputs then go to the Amplifier, A1, then are directed to other modules.
The output of the transformer, T1, goes to a bridge rectifier and filter caps for a + and -28
supply.
The Programmable Controller Assembly, A2, generates the oscillator waveforms, power
source controls and measurement signals. The oscillator assembly is connected to the rest
of the power source through the Amplifier Board, A1.
The Amplifier Module, A1, takes its DC supply voltages directly from the DC supply. It gets
it's input signal from the Controller Board, A2. It produces the high power output for the
primary of the output transformer, T2. The output from the output transformer is connected
to the Range Relay Board, A3.
The Range Relay Board assembly configures the secondaries of the output transformers for
the correct output voltage range. The output from the AC Power Source is taken from the
Range Relay Board.
5.3
Input Power Supply
The Input Power Supply consists of transformer, T1, Bridge Rectifier OR1 and capacitors C1
and C2. The DC output from the supply connects to the Amplifier. The +28 VDC supply
connect to the Amplifier terminal E2. The -28 VDC supply connect to E3 and the common to
E4. The transformer also supplies the RS232/GPIB assembly with an isolated AC supply.
Figure 5-1: AC Power System Block Diagram
This page intentionally left blank
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TL Series
5.4
Range Relay Board
The Range Relay Board, Module Assembly A3, has all of the AC Power Source relays.
These relays are operated from +28 VDC. The output relay is controlled by the CNF Logic
Line. The range relay is controlled by the LVR line.
There is a current transformer on the Range Relay Board. This transformer generates an
AC voltage that is proportional to the output current. The current transformer burden resistor
has two different values for the two current measurement ranges. The relay for the
measurement ranges is controlled by the AMP 4 line.
The Range Relay Board also has an instrumentation amplifier. This amplifier is used to
remotely sense the output voltage. The signal from the instrumentation amplifier is
SENSE A.
5.5
Amplifier
The AC Power Source uses a linear amplifier for a low-noise, low distortion output. The
amplifier module is designated A1. The Amplifier assembly also acts as an interconnect
between the other board assemblies.
The Amplifier obtains its input signal from the Controller. A 5.0V RMS input signal will
generate a full-scale output voltage at the output of the AC Power Source and 11.5V RMS on
the primary of the output transformer.
The Amplifier requires
supply.
28 VDC. The
28 VDC supply comes from the DC input power
The Amplifier has a thermo-switch mounted on its heat sink. If the heat sink temperature
exceeds 80 degrees C, the amplifier shuts down and sends an OVT signal to the oscillator
module. Logic low on the OVT control line will cause the front panel FAULT indicator to be
illuminated. When the heatsink exceeds 45 degrees C, the fan speed will increase.
5.6
Controller Module
The Controller Module is designated A2. The module consists of one printed circuit
assembly. This assembly is interconnected to the Amplifier Board.
The Oscillator Module has the circuits to perform the following operations:
1. Generates the output voltage sinewave.
2. Interprets the Voltage, Frequency and Current limit commands from the front panel and
RS232/GRIB Board.
3. Attenuates the oscillator drive signal to operate in a constant current mode.
4. Measures the output voltage, current, peak current and power.
5. Performs voltage dropouts at a designated phase angle.
5.7
IEEE 488/ RS232 Interface [Option]
The 351TL can optionally be outfitted with a combined RS232C and IEEE 488 interface
board. This board assembly has opto-couplers for interface isolation.
The GPIB address for the AC source is selected by a DIP switch on the rear panel. Only one
interface can be active at any given time and must be selected using DIP switch position 6.
(Refer to Figure 8-2).
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March 2011
TL Series
CAUTION
THE INPUT LINE VOLTAGE IS PRESENT IN CERTAIN
SECTIONS OF THIS
POWER SOURCE. THIS EQUIPMENT GENERATES
POTENTIALLY LETHAL VOLTAGES.
DEATH
ON CONTACT MAY RESULT IF PERSONNEL FAIL TO
OBSERVE SAFETY PRECAUTIONS. DO NOT TOUCH
ELECTRONIC CIRCUITS WHEN POWER IS APPLIED.
6
Calibration
Routine calibration should be performed every 12 months. Non-routine calibration is only
required if a related assembly is replaced or if the periodic calibration is unsuccessful.
Calibration can be performed through the front panel by putting the Power Source in
Calibration mode (CAL mode) or over the RS232C or IEEE-488 bus if the interface option is
installed. For bus calibration, the PGUI32 program may be used. Refer to the PGUI32 help
file supplied with the program for instructions on calibration over the remote control bus.
All routine calibrations can be performed without removing the top cover (Closed case
calibration).
6.1
Calibration Equipment
Digital Multimeter (DMM):
Two (2) HP 34401A
100 milliohm Current Shunt:
Isotek Model RUG-Z-R100-0.1 or equivalent
Load Bank:
Various power load resistors will be needed
Model
Range
Current
max.
351TL
135 V
270 V
135 V
270 V
2.8 A
1.4 A
2.4 A
1.2 A
251TL
Load
48.2
192.9
56.3
112.5
Table 6-1: Load Resistors and Current
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TL Series
6.2
Selecting Calibration Mode
The Power Source can be placed in calibration mode (CAL mode) by depressing the
recessed CAL button located on the front panel using a pen or similar pointed object.
Depressing this button for a brief moment will place the Power Source in CAL mode,
indicated by the illumination of the PF LED. While in CAL mode, the front panel controls are
used to adjust the various calibration parameters. Both controls and status indicators take
on different functions while the unit is in CAL mode. The SELECT button is used to select
the various measurement parameters that can be calibrated in this mode. The following
status indications are in effect while in CAL mode:
Status LED
CAL mode * (PF LED illuminated)
Normal operating mode *
FREQ
Indicates voltage measurement
calibration is selected.
If this LED is not lit while in CAL
mode, the Output Voltage
calibration mode is selected.
Indicates frequency setting or
measurement is displayed on right
7 segment LED display.
I RMS
Indicates current measurement
calibration is selected.
Indicates current limit setting or
current measurement is displayed
on right 7 segment LED display.
I PK
Indicates peak current
measurement calibration is
selected.
Indicates peak current
measurement is displayed on right
7 segment LED display.
PWR
Indicates power measurement
calibration is selected.
Indicates power measurement is
displayed on right 7 segment LED
display.
PF
Indicates 351RP unit is in
calibration mode.
Indicates power factor
measurement is displayed on right
7 segment LED display.
Table 6-2: CAL Mode Status LED Indicators
* Some measurement functions are optional and may not be available. The calibration mode
will only select measurement calibration for measurement functions that are installed.
Note that in normal mode of operation, at no time more than one of the measurement mode
selection LED‟s are lit at the same time. In CAL mode however, the PF LED is always on, in
addition to one of the other four measurement selection LED‟s or no other LED for output
voltage calibration.
6.3
Routine Calibration
Setup:
Connect the test equipment to the power source as shown in Figure 6-1. The DMM can be
connected to the common output terminal at the rear of the unit.
Never connect the load wire to the SENSE terminal at the Rear Panel terminal strip. The
load must be connected to the POWER output terminal and a jumper between the
POWER and SENSE terminal. Always connect the external DVM to the SENSE terminal.
Figure 6-1: Test Equipment Hookup for Routine Output and Voltage Measurement Calibration
6.3.1 Output Voltage Calibration
1. Select the high voltage range. Set the output frequency to 400 Hz . Set the output voltage
to 240 volts.
2. Remove the load and enable the output voltage with the Output ON/OFF button.
3. Put the Power Source in CAL mode by pressing the recessed CAL button.
4. Use the SELECT key to toggle to the output voltage calibration mode. In this mode, all
LED‟s excepts the PF LED are off.
5. Use the Left control knob to adjust the output voltage displayed on the external reference
DMM until it reads as close as possible to 240 VAC.
6. Press the CAL button to leave the calibration mode.
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6.3.2 Measurement Calibration - Low Scale
Note:
Measurement calibration can be done at any output frequency setting
as only one set of calibration coefficients is used for measurement
calibration. However, for best results, calibrate the measurements at
the frequency which is used in most applications, e.g. 50 Hz, 60 Hz, or
400 Hz.
Refer to Table 6-1 for correct load resistors based on model number.
Low Scale Voltage Measurement Calibration
1. Connect the test equipment to the power source as shown in Figure 6-2. Do not connect
any load during this step. Voltage calibration must be done under no load conditions.
2. Select the Low Voltage Range and program the output voltage to 10 volt AC.
3. Put the Power Source in CAL mode by pressing the recessed CAL button.
4. Use the SELECT key to select the Voltage Measurement calibration mode. This mode is
indicated by the FREQ LED.
5. Use the left control knob to adjust the voltage reading shown on the right hand 7
segment LED display until it reads as close as possible to the reference reading as
displayed on the external DMM.
Figure 6-2: Test Equipment Hook-up for Current and Power Measurement Calibration
Low Scale Current Measurement Calibration
1. Connect the test equipment to the power source as shown in Figure 6-1.
2. Do not apply a load to the output terminals. Make sure the external DMM used for
voltage measurement is across the same terminals.
3. The output voltage must be programmed to 10.0 volts.
4. Use the SELECT key to select the Current Measurement calibration mode. This mode is
indicated by the I RMS LED.
5. Use the left control knob to adjust the current reading shown on the right hand 7 segment
LED display until it reads as close as possible to 0.0. Do not go past a reading of zero.
Low Scale Peak Current Measurement Calibration
1. Connect the test equipment to the power source as shown in Figure 6-1. Do not connect
the load.
2. Program the output voltage to 10.0 volts.
3. Use the SELECT key to select the Peak Current Measurement calibration mode. This
mode is indicated by the I PK LED.
4. Use the left control knob to adjust the peak current reading shown on the right hand 7
segment LED display until it reads as close as possible to 0.0. Do not go past a reading
of zero.
Low Scale Power Measurement Calibration
1. Connect the test equipment to the power source as shown in Figure 6-1. Do not connect
the load.
2. Program the output voltage to 10.0 volts.
3. Use the SELECT key to select the Power Measurement calibration mode. This mode is
indicated by the PWR LED.
4. Use the left control knob to adjust the power measurement reading shown on the right
hand 7 segment LED display until it reads as close as possible to 0.0. Do not go past a
reading of zero.
Note:
46
The method of adjusting the low scale values for voltage, current and
power insure that the measured value is correct for small values.
Under a no-load condition, however, the measured value may not be 0
March 2011
TL Series
6.3.3 Measurement Calibration - Full Scale
Note:
Measurement calibration can be done at any output frequency setting
as only one set of calibration coefficients is used for measurement
calibration. However, for best results, calibrate the measurements at
the frequency which is used in most applications, e.g. 50 Hz, 60 Hz.
Refer to Table 6-1 for correct load resistors based on model number.
Full Scale Voltage Measurement Calibration
1. Connect the test equipment to the power source as shown in Figure 6-1. Do not connect
any load during this step. Voltage calibration must be done under no load conditions.
2. Select the High Voltage Range and program the output voltage to 240.0 volts AC or the
maximum voltage available if less than 240 Volts.
3. Put the Power Source in CAL mode by pressing the recessed CAL button.
4. Use the SELECT key to select the Voltage Measurement calibration mode. This mode is
indicated by the FREQ LED.
5. Use the left control knob to adjust the voltage reading shown on the right hand 7
segment LED display until it reads as close as possible to the reference reading as
displayed on the external DMM.
Full Scale Current Measurement Calibration
1. Connect the test equipment to the power source as shown in Figure 6-2.
2. Apply the 43.4 resistive load to the output terminals. Make sure the external DMM
used for voltage measurement is across the sense terminals.
3. Program the output voltage to a value that produces the maximum output current. Refer
to the following for the maximum current:
POWER SOURCE
351TL
251TL
MAX CURRENT
2.8 A
2.4 A
4. Use the SELECT key to select the Current Measurement calibration mode. This mode is
indicated by the I RMS LED.
5. Use the left control knob to adjust the current reading shown on the right hand 7 segment
LED display until it reads as close as possible to the reference reading indicated by the
DMM measuring the current shunt voltage (DMM 1). Note that .28 V reading represents
2.8 Amps if the recommended 100 m shunt is used.
Full Scale Peak Current Measurement Calibration
1. Connect the test equipment to the power source as shown in Figure 6-2.
2. Select the low voltage range and program the output voltage to 135 volts. Apply the load
for the maximum current allowed.
3. Use the SELECT key to select the Peak Current Measurement calibration mode. This
mode is indicated by the I PK LED.
4. Use the left control knob to adjust the peak current reading shown on the right hand 7
segment LED display until it reads as close as possible to the reference reading derived
from the external DMM (DMM 1). Remember the peak current value is equal to 1.414
times the value shown on the external DMM.
Full Scale Power Measurement Calibration
1. Connect the test equipment to the power source as shown in Figure 6-2.
2. Program the output voltage to 135 volts and apply the maximum load.
3. Use the SELECT key to select the Power Measurement calibration mode. This mode is
indicated by the PWR LED.
4. Calculate the power by multiplying the external reference current reading (DMM 1) with
the external reference voltage reading (DMM 2).
5. Use the left control knob to adjust the power measurement reading shown on the right
hand 7 segment LED display until it reads as close as possible to the calculated power
reading.
6.4
Non-Routine Calibration
The following calibrations are not required on a routine basis:
Current Transformer Adjustment (Section 6.4.1). If either the current or power
measurements cannot be adjusted, this adjustment must be performed.
Current Limit Adjustment (Section 6.4.2). This calibration is only required if the output
current, while operating in the constant voltage or current mode, is not equal to or more
than the programmed value.
Open Sense Adjustment (Section 6.4.3). This adjustment must be made if the output
voltage can‟t be calibrated while operating in the constant current mode. If the output
faults, with no-load, while operating in the Constant Voltage mode, this adjustment must
also be made.
Amplifier Offset Adjustment (Section 6.4.4).
All of the non-routine calibration adjustments must be made with the top cover removed.
Refer to Figure 6-3 for the location of the internal adjustments.
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March 2011
TL Series
6.4.1 Current Transformer Adjustment
Note:
The Current Transformer must be adjusted before the Current Limit
and Current Measurement Adjustments.
1. Connect the test equipment as shown in Figure 6-2. Use the 43.4 ohm load.
2. Program the output voltage to 135V on the low voltage range and 60 Hz.
3. Use the SELECT key to select the Current Measurement display. Note that this is not the
Current Measurement calibration mode. Only the I RMS LED should be illuminated.
4. Observe the actual output current as shown on the external DMM and current shunt.
Adjust R3 on the Range/Relay Board for a measurement display equal to the actual
output current.
CAUTION:
The amplifier wind tunnel must be covered for proper cooling if the
adjustment takes more than 1 minute.
6.4.2 Current Limit Adjustment
Note:
If the Current Limit and High Current Measurement Range Adjustments
are both adjusted, the High Current Measurement Range must be
adjusted first.
1. Connect the test equipment as shown in Figure 6-2. Use the 43.4 ohm load.
2. Program the current to 2.0 A. Program the output to the low voltage range, 60 Hz.
Adjust the output voltage for an output current of 2.1 amps. If the output faults before
2.1 A is reached, adjust R50 several turns clockwise and readjust the output for 2.1 A.
CAUTION:
The amplifier wind tunnel must be covered for proper cooling if the
adjustment takes more than 1 minute.
1. Slowly adjust R50 on the Oscillator Board counterclockwise just until the output faults.
Figure 6-3: Internal Adjustments
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March 2011
TL Series
6.4.3 Open Sense Adjustment
Connect the test equipment as shown in Figure 6-1.
NOTE:
The 351TL must be configured for the Constant Current Mode of
operation for this procedure. For this mode jumpers W1 and W2 on the
controller must be removed.
Disconnect the SENSE HIGH terminal on the rear panel terminal strip. Connect the external
AC DMM between the two output POWER terminals on the rear panel.
Program the output to 100.0 volts and adjust R8 on the Amplifier Board for an output voltage
of 115 volts.
Turn off the front panel circuit breaker and reinstall the top cover. Also reconnect the
external SENSE terminals at the rear panel.
Reinstall jumper W1.
6.4.4 Amplifier Offset Adjustment
Turn off the Front Panel circuit breaker.
Connect the DMM to the primary of the output transformer, T2. The transformer primary terminals
are the two wire lugs. Refer to
Figure 6-3. Make sure there is a good electrical connection to T2 by verifying the electrical
resistance with the DMM. The resistance must be less than 1 ohm.
52
March 2011
TL Series
Switch the DMM to the DC mode. Turn on the Front Panel circuit breaker. Adjust the offset
adjustment, R12, for a DC voltage less than 0.0005 volts. Make sure the AC voltage is programmed
to 0.0 volts for this adjustment. Refer to
Figure 6-3 for the location of all adjustments.
54
March 2011
TL Series
7
Service
7.1
General
This section describes suggested maintenance and troubleshooting procedures. The
troubleshooting procedure is divided into two sections. The first section deals with basic
operation and connection of the equipment. The second section requires opening the unit and
using the LED indicators and a simple multimeter to troubleshoot the unit down to the module
level. Only a qualified electronic technician should attempt this level of troubleshooting.
7.2
Basic Operation
Table 7-1: Basic Symptoms
PARAGRAPH
PROBLEM
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
7.2.7
7.2.8
Poor Output Voltage Accuracy
Poor Output Voltage Regulation
Distorted Output
Unit Shuts Down After 3-5 Seconds
No Output and no lights on front panel
No output but “Display” on front panel is on
Fault Lamp on
Can‟t program AC Power System on GPIB/RS232
7.2.1 Poor Output Voltage Accuracy
If the power source exhibits poor programmed voltage accuracy, the following item may be at
fault:
Table 7-2: Poor Output Voltage Accuracy
CAUSE
SOLUTION
The calibration is incorrect.
Calibrate the output.
7.2.2 Poor Output Voltage Regulation
If the AC Power Source exhibits poor voltage regulation the following item may be at fault:
Table 7-3: Poor Output Voltage Regulation
CAUSE
SOLUTION
The Remote Sense lines are not
connected at the same point monitored by
the external voltmeter used for load
regulation check.
Connect AC voltmeter to Remote Sense
lines on the Rear Panel Power Output
terminal strip.
7.2.3 Distorted Output
Table 7-4: Distorted Output
CAUSE
SOLUTION
Power source is grossly overloaded.
The crest factor of the load exceeds 3:1.
Reduce load.
Reduce load current peaks by reducing
load.
7.2.4 Unit Shuts Down After 3-5 Seconds
Table 7-5: Unit Shuts Down After 3-5 Seconds
CAUSE
SOLUTION
Output shorted.
Output grossly overloaded.
Operating load with too high inrush or start
up currents.
Remove output short.
Remove overload.
Consult factory for application advice.
7.2.5 No Output and No Lights on Front Panel
Table 7-6: No Output and No Lights on Front Panel
CAUSE
SOLUTION
Front panel power switched off.
No input power to the input connector.
Blown fuse.
Switch the breaker on.
Ensure correct input power.
Check fuse F1 and F2 on the DC power
supply and replace with same type and
rating. See Figure 7-2.
7.2.6 No Output but “Display” on Front Panel is On
Table 7-7: No Output But "Display" Is On
56
CAUSE
SOLUTION
“OUTPUT ON” switch is turned off.
Current limit programmed down or to zero.
Voltage programmed down or to zero.
Fault LED is lit.
Turn OUTPUT ON switch to “ON”.
Program current limit higher.
Turn amplitude control up.
Cycle Rear Panel power switch off and on.
March 2011
TL Series
7.2.7 Fault Lamp On
If the power source Fault lamp is on, the following may be at fault:
CAUSE
SOLUTION
Ambient temperature is too high.
Operate power source between 0 and
50 C.
Remove obstructions.
Replace fan. Consult factory.
Fan or ventilation holes are blocked.
Fan not working.
If the Power Source is configured to operate in the Constant Voltage mode, the Fault lamp
comes on when the output load current has exceeded the programmed current limit value. If the
AC Power Source Fault lamp is on, the following items may be at fault:
CAUSE
SOLUTION
The output is overloaded.
The programmable current limit level is set
too low for the load being driven.
The programmable current limit is
incorrectly calibrated.
The Remote Sense lines are not
connected.
Remove the overload.
Compute and reprogram the correct
programmable current limit level.
Perform the calibration in Section 6.4.2
On the Rear Panel Power Output terminal
block, connect terminal 2 to 3. Also
connect terminal 5 to 6.
7.2.8 Can’t Program AC Power System on GPIB or RS232
If the power source does not respond to IEEE-488 GPIB or RS232 programming, the following
items may be at fault:
7.3
CAUSE
SOLUTION
The power source unit address is
incorrect.
GPIB or RS232 cable is loose at power
source rear panel.
RS232/GPIB Assembly has failed.
Power connection to RS232/GPIB Assy
is bad.
Update address. See section 8.3.
Check connection, tighten jackscrews.
Replace the RS232/GPIB Assembly.
Remove top cover. Connect power to
RS232/GPIB Board, J1. Refer to Figure 7-1.
Module Removal
Figure 7-1 shows the location of the internal modules and assemblies. The figure shows the
Amplifier Module, A7, with the insulator removed.
Figure 7-1: Assembly Location
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March 2011
TL Series
7.3.1 Oscillator Module Removal/Replacement
If a fault is found that requires the replacement of the Oscillator Module (Assembly A1) follow the
following steps and refer to Figure 7-1 for the module locations:
1. Turn off the front panel circuit breaker. Remove the input power from the rear panel terminal
block.
2. Remove the top cover.
3. Remove the front panel knobs.
4. Remove 5 screws that hold the oscillator assembly to the front panel. The oscillator
assembly can now be removed.
7.3.2 Amplifier Removal/Replacement
If a fault has been found that indicates the failure of the amplifier module (Assembly A7), check
the condition of the +300 VDC fuse (F2) before replacing the amplifier. Refer to
Figure 7-1 for the location of the fuse.
If it is determined that the amplifier module must be replaced, perform the following procedure:
1.
Turn off the input circuit breaker.
2.
Disconnect AC input power at the rear panel.
3
Remove the AC Power Source top cover by removing (13) #6-32 x 5/16” FLH
screws.
4
Remove the (2) #6-32 x 1” screws and lock washers that hold the amplifier module
along the left chassis side panel.
5
Remove (2) #6-32 x 3/8” screws and lock washers located near the connector,
attaching the red insulator to the center bracket.
6.
Remove the amplifier by pulling it away from the connectors and lifting it up and out of
the amplifier cage.
7.
The amplifier may be replaced by following this procedure in reverse order.
8.
Check the amplifier 20 A fuse (F2) located on the DC Supply Board, A6, and
replace it if necessary.
9.
After an amplifier has been replaced, readjust its gain.
7.4
Replaceable Parts
In order to ensure prompt, accurate service, please provide the following information, when
applicable for each replacement part ordered.
a. Model number and serial number of the instrument.
b. California Instruments‟ part number for the sub-assembly where the component is located.
(California Instruments PART #)
c.
Component reference designator. (SEQ #)
d. Component description.
e. Component manufacturers' FSCM number. (VENDOR)
All replaceable part orders should be addressed to:
California Instruments Corporation.
Attention: Customer Service
9689 Towne Centre Drive
San Diego, California 92121-1964
United States of America
Orders may also be placed using the following fax number: 1 858 677 0904
SEQ #
C.I. PART #
DESCRIPTION
VENDOR
QTY
A1
4005-714-1
PC Assy, Oscillator
16067
1
A2
4005-715-1
PC Assy, Range/Relay
16067
1
A3
4005-702-2
PC Assy, RS232/GPIB
16067
1
A4
4005-716-1
PC Assy, Motherboard
16067
1
A6
4005-713-1
PC Assy, DC Supply
16067
1
A7
4009-456-3
PC Assy, Heatsink, SW Amp
16067
1
A9
4005-710-1
PC Assy, EMI Filter
16067
1
B1
241180
Fan, 4, 48 VDC
23936
1
F1
270064
Fuse, 1/2A, 250V (slo-blo)
71400
1
F2
270176
Fuse, 20A, 250V
71400
1
Table 7-8: Replaceable Parts
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March 2011
TL Series
8
Remote Control
8.1
Introduction
The TL Series can be furnished with a combination IEEE-488 and RS232C control interface at
the time of purchase. This interface is part of the -OP1 option package. This interface option
also includes the California Instruments Graphical User Interface program - PGUI32. This
Windows™ program provides a soft front panel to the instrument when connected to a PC
through the RS232C or IEEE-488 interface. Additional benefits are obtained from using the PC
as a control interface. Some of these benefits include the ability to store measurement data to
disk and produce output transients to simulate commonly occurring AC line conditions.
The PGUI32 is a Windows™ program and as such requires a PC capable of running
Windows 95/98™, Windows ME™, or Windows NT /2000. For best performance, a Pentium
based PC is recommended. Intel™ 80486 based PC's will exhibit poor performance while
generating transients due to their lack of processing speed.
Complete information on how to use the PGUI32 can be found in the on-line help supplied with
the program. Use the Help menu or press on any of the many Help keys located in all program
windows for an explanation of the relevant screen or function.
As always, California Instruments appreciates your patronage and would welcome any
comments and suggestions you might have regarding this software or any of its other products.
Use the End-user feedback form located on page Error! Bookmark not defined.. The same
form can be used to report software bugs should you encounter any.
8.2
PGUI32 Program Requirements
To successfully install and operate the PGUI32 program, you will need the following equipment:
California Instruments AC power source. Supported models are :
251TL / 351TL
1001P
1251P
801RP
1251RP
2001RP / 2001RP-AV / 2001RP-LZ
PC capable of running Windows 95™, Windows 98™, Windows ME
or Windows NT /2000
RS232C communications port
RS232C serial cable (supplied with the -OP1 option package.) See next section for
RS232C cable wiring
or
National Instruments IEEE-488 Controller Card
Figure 8-1: Rear Panel View
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TL Series
Note:
8.3
The PGUI32 can be run in the absence of a power source. If no AC source is
available, the PGUI32 can be operated in a simulation mode. The program will
detect these conditions and start up in simulation mode after notifying the
operator. Measurements in this case will be simulated and should not be used for
any analytical purpose.
IEEE Interface
The 251 / 351TL can optionally be equipped with both RS232C and IEEE-488 interfaces. The
desired interface is selected by moving the dip switch position 5 to the correct mode. Only one
interface can be active at a time. Refer to Figure 8-1 for the location of this switch.
The IEEE address of the 251 / 351TL is set using the dip switch at the rear of the unit. Switch
position 4 through 0 corresponds to bits 4 through 0 of the IEEE address. See figure below.
Figure 8-2: GPIB Address Selection Switch
The black section represents the switches.
The above configuration would cause the 251 / 351TL to be in GPIB mode at address 10.
Listen only must be in the up position to work properly.
Note:
Switch setting changes do not take effect until power is cycled.
8.4
RS232C Interface
A suitable cable to connect the 251 / 351TL AC Source to a 9 pin PC-AT style serial port is
supplied with the source. If you are unable to locate this cable, you need to use a cable that
conforms to the wiring diagram shown in Figure 8-3.
Note:
This cable is not bi-directional so it is important to mark the PC side and the AC
source side of this cable. If the cable is connected in reverse, it will not operate
correctly.
The TL Series expects a LF (Hex 10) terminator at the end of each string sent over the RS232C
interface. If the programming environment you use to develop test programs does not append a
LF terminator to each output string, the TL Series will not respond. This is true of programs like
LabView™ using VISA drivers.
8.4.1 Serial Communication Test Program
The following sample program written in Quick-BASIC can be used to check communication to
the TL Series AC source over the RS232C serial interface. The interface is optional and must be
installed for this to work.
'California Instruments 251/351TL RS232C Communication Demo Program
'(c) 1998 Copyright California Instruments, All Rights Reserved
'
'This program is for demonstration purposes only and is not to be
'used for any commercial application
'================================================================
'Function and Subroutine Declarations
DECLARE FUNCTION retstring$ ()
'================================================================
'MAIN PROGRAM CODE
'================================================================
'OPEN COM2. Replace with COM1, COM3 or COM4 for Com port used
'The input and output buffers are set to 2K each although
'this is not required for most operations.
OPEN "COM2:19200,n,8,1,BIN,LF,TB2048,RB2048" FOR RANDOM AS #1 LEN = 1
CLS
PRINT "**** 251/351TL INTERACTIVE MODE ****"
'Enter and endless loop to accept user entered commands
DO
INPUT "Enter Command ('quit' to exit)--> ", cmd$
IF cmd$ <> "QUIT" AND cmd$ <> "quit" THEN
IF cmd$ <> "" THEN
PRINT #1, cmd$ + CHR$(10);
END IF
IF INSTR(cmd$, "?") THEN
PRINT "AC Source query response = "; retstring$
END IF
'Check for Errors after each command is issued
PRINT "Sending non-query syntax check *ESR?"
'On fast PC's we may have to hold off between commands
FOR t = 0 TO 1000: NEXT t
PRINT #1, "*ESR?" + CHR$(10);
esr% = 0 'Clear last error
'Mask off bits 5,4,3,2 only. Other bits are not used.
esr% = VAL(retstring$) AND 60
'Process esr% value for error bits
IF esr% AND 4 THEN
PRINT "*** Query Error Reported by AC Source ***"
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END IF
IF esr% AND 8 THEN
PRINT "*** Instrument Dependent Error Reported by AC Source ***"
END IF
IF esr% AND 16 THEN
PRINT "*** Command Execution Error Reported by AC Source ***"
END IF
IF esr% AND 32 THEN
PRINT "*** Command Syntax Error Reported by AC Source ***"
END IF
'Clear ERR. -XXX Message from front panel if any error occured
IF esr% <> 0 THEN
PRINT #1, "*CLS" + CHR$(10);
END IF
END IF
LOOP UNTIL cmd$ = "QUIT" OR cmd$ = "quit"
'Close COM port on exit
CLOSE #1
END
'================================================================
FUNCTION retstring$
'This function returns a response string from the P/RP/TL Series
'AC power source. The QBasic statement LINE INPUT cannot be used
'as the P/RP/TL Series does not return a CR <13> after a response
'message. The LINE INPUT function waits for a CR before
'returning a string. The P Series returns a LF <10> instead
'so we need to poll each returned character for a LF to
'assemble the response string. The COM port needs to be
'opened AS random with a record length of 1 for it to support
'this function. Also, the device number is assumed to be #1
'Optionally, this value could be passed as a parameter to
'make this program more generic.
DIM char AS STRING * 1
DIM resp AS STRING
char = ""
resp = ""
DO
char = INPUT$(1, #1)
resp = resp + char
LOOP UNTIL char = CHR$(10)
'Return result
retstring = LEFT$(resp, LEN(resp) - 1)
END FUNCTION
8.4.2 Serial Cable Diagram
California Instruments AC power sources require a special RS232C cable to communicate with a
PC. Standard null-modem cables obtained from a computer hardware store most likely will not
work. For this reason, all California Instruments power sources that operate over RS232C are
supplied with a RS232C 9 pin female to 9 pin female cable.
If for some reason this cable cannot be located, the following cable diagram shown in Figure 8-3
should be used when constructing a serial cable.
DB-9 PC
Pin
1
2
3
4
5
6
7
8
9
DB-9 AC Source
Pin
1
2
3
4
5
6
7
8
9
Direction
output
input
output
output
input
output
Description
reserved
Receive data(RxD)
Transmit data (TxD)
Data Terminal Ready (DTR)
Signal Ground
Data Set Ready (DSR)
no connect
no connect
reserved
Figure 8-3: RS232C Interface Cable Wiring Diagram
Figure 8-4: DB9 to DB25 Adapter Wiring Diagram
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8.5
PGUI32 Setup and Installation
This section covers installation of the PGUI32 from the distribution disk to the user‟s PC. Make
sure the PC is capable of running Windows with at least 16 Mbytes of memory and 4 Mbytes of
available hard disk space.
8.5.1 Connecting the AC Source to the PC When Using RS232
Connect the AC source to the PC using an RS232C cable.
The AC source com port settings are set as follows:
Baud rate:
Data bits:
Stop bits
Parity bits:
Handshake:
19200 baud for model 251 / 351TL
8
1
none
Hardware
The AC source is configured to accept the above setting.
Select the RS232 interface by sliding the interface selection dipswitch on the rear panel to the
RS232 position.
8.5.2 Connecting the AC Source to the PC Using IEEE-488
Connect the AC source to the PC using an IEEE-488 interface cable. A National Instruments
GPIB controller card is required to use the PGUI32 program.
Select the IEEE-488 interface by sliding the interface selection dip switch on the rear panel to the
IEEE-488 position.
Set the desired IEEE address using DIP switch position 4 through 0 on the rear panel.
8.5.3 Installing the PGUI32 Software
The PGUI32 software is distributed on a CD-ROM. The PGUI32 must be installed from the CD
using the setup program as all required files are compressed. You cannot copy the contents of
the CD to your PC hard drive and run the program. To install the PGUI32, proceed as follows:
1.
Turn on the PC and boot up in Windows™
2.
Insert the CD in your CD-ROM drive.
3.
From the Windows Start Menu, select RUN.
4.
At the “Open” prompt, type D:Setup depending on which disk drive you used and
click on the OK button.
5.
Select the 251TL/351TL entry under low Power AC Sources from the list of model
numbers.
6.
Select the GUI Software tab and click on the "Execute Selection" button.
7.
Follow the instructions provided by the setup program to complete the installation.
8.
When the installation has completed, remove the CD from the drive and store it in
a safe place.
Reboot the PC to activate the new settings. You are now ready to start using the PGUI32
software.
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8.6
Trouble Shooting - RS232C
This section provides guidelines for resolving communication problems that may occur when
using the PGUI32 software under Windows .
You may encounter problems when using the serial interface with the PGUI32 program that is
supplied with the interface option for this source.
Symptoms:
1. Unable to verify connection to the power source through RS232C interface. Time-out occurs
and dialog box appears that asks if you want to switch to simulation mode. An error message
(ERR -100) may appear on the front panel 7 segment LED display‟s of the power source.
- Or 2. Verification is successful but slewing of voltage, frequency or current limit results in an ERR 100.
Things to check first:
1. Is the PC com port you selected to use really available for this purpose? On older PC‟s com
port interrupts are often shared between com 1 and com3 as well as com2 and com 4. If any
of these other com ports is in use, it may prevent you from using the com port that shares
the same interrupt.
2. Did you use the RS232C cable that was supplied with the P/RP AC source? This is not a
null-modem cable and cannot easily be obtained at a computer store. If you do not have the
original cable, consult the PGUI32 on line help under Interface settings for a wiring diagram.
3. Did you connect the cable in the right direction? This cable is uni-directional and should be
marked with a SOURCE and a PC label. Make sure you connect the SOURCE side of the
cable to the back of the AC source and the PC side of the cable to the PC port.
Resolution for Symptom 1
The P and RP Series of AC sources require hardware handshaking to control data flow from the
PC to the AC source. After receiving a command, the AC source asserts the DTR line to hold off
further communication from the PC until the command just sent has been processed. Under
Windows 95, it is possible to use a 16 byte transmit buffer if a 16550 UART is present. This FIFO
exceeds the length of most AC source commands. When enabled, this mode may result in more
than one command being placed in the UART output buffer. If this happens, the handshake from
the AC source will not prevent the content of this buffer being sent to the AC source and thus will
result in more than one command being sent to the AC source.
To resolve this problem, the UART FIFO length needs to be reduced or disabled altogether. The
procedure to disabled the FIFO mode is outlined in the next paragraph.
Note: If turning off the UART FIFO conflicts with other applications that need to run on the same
PC using the same COM port, this solution may not be acceptable. In this case, skip this step
and proceed to the second symptom resolution which relies on a software implemented hold-off
instead of turning off the FIFO buffer. If you are using Windows 3.1 and experience the same
problem, the latter method is the only resolution available to you so you should skip the next
paragraph as well.
Procedure
1. Make sure the PGUI32 program is closed and no device is
using the com port in use.
2. From the Windows desktop, right click on the “My
Computer” icon which is located in the top left corner of the
screen.
3. From the popup menu, select the “Properties” entry.
4. This brings up the System Properties dialog box
5. From the tabs shown at the top of the dialog box, select
the “Device Manager” tab.
6. The relevant screen is shown in Figure 8-5.
7. Expand the Ports(COM&LPT) tree selection by clicking on
the „+‟ sign
8. Select the COM port you plan to use to communicate with
the P or RP series power source.
9. With the correct COM port selected, click on the Properties
button at the bottom left of the dialog box.
10. This brings up the settings dialog box for the COM port. In
this example, COM2 is used.
11. From the tabs at the top of the dialog box, select the “Port Settings”
Figure 8-5: System Properties Dialog Box
tab.
12. This should bring up the dialog shown in Figure 8-7.
13. Next, select the Advanced button to bring up the advanced port settings dialog box shown in Figure
8-6.
Figure 8-6: Advanced Port Settings Dialog Box
14. At the top of the dialog box, disable the “Use FIFO buffers
(requires 16550 compatible UART)” checkbox. This will
bypass the UART FIFO‟s and enable the hardware
handshake to work correctly.
15. Click on the all OK buttons to close all dialog boxes that
remain open.
Figure 8-7: COM Port Properties Dialog Box
16. This should enable the PGUI32 to work correctly.
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Resolution for Symptom 2
Execute the suggested procedure to resolve symptom 1 first. If an occasional error continues to
occur while slewing the voltage or frequency slider controls in the PGUI32 program, add a
command delay to the PGUI32 Registry Interface section using the following procedure. This
symptom may occur on some PC‟s.
The command delay holdoff value is shown in the Interface screen. Edit it's value by overwriting
the value shown.
Higher values than 40 may be set for the CmdDelay parameter if this fix does not resolve your
problem.
8.7
Trouble Shooting - IEEE-488 / GPIB
This section provides guidelines for resolving communication problems that may occur when
using the Power Source with or without the PGUI32 software with a IEEE-488 / GPIB interface.
Symptoms:
1. Unable to verify connection to the power source through IEEE-488 interface. Time-out
occurs any time an attempt is made to verify connection.
Things to check first:
1. Is the Power Source interface option set to use the IEEE-488 interface instead of the
RS232C interface? The DIP switch on the rear panel is used to select the desired interface
mode. Refer to section 8.3.
2. Does the bus address selected in the System, Interface dialog match the address set using
the DIP switches on the Power Source? The GPIB address selected must match the
settings on the DIP switch. If changes are made to the DIP switch setting, the Power Source
power must be cycled off and on to have the new settings take effect.
3. Did you connect the cable in correctly and are both ends of the GPIB cable securely tied
down?
Resolution for Symptom 1
When using a fast IEEE-488 bus controller, the Power Source's IEEE-488 interface may not
handshake fast enough to satisfy the controllers timing requirement. If this is the case, a time-out
will result any time a command is sent to the power source. To rectify this situation, the IEEE-488
controller must be set to use delayed bus timing. For National Instruments GPIB controller cards
running under Windows™, this can be done from the device manager.
Select the GPIB interface and click on the NI-488.2M Settings tab. An Advanced button at the
bottom of the screen will provide access to the Bus Timing parameter. Set this value to 2 sec to
operate with the 251 / 351TL GPIB
interface.
Figure 8-9: NI AT-GPIB/TNT Advanced
Settings Dialog
Figure 8-8: NI AT-GPIB/TNT Settings
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8.8
PGUI32 Distribution Files
The installation program will install the following files in the directories specified. Note that files
with the same name that already exists in these directories will not be overwritten as part of the
installation process. If older files of the same name are found, they will be replaced. If you need
to retain a copy of these older version files, we recommend you back these files up prior to
running the installation program.
Application directory files
The following files are copied to the application directory. The application directory name is
chosen by the user during the installation process. The default directory for the PGUI32 is:
C:\Program Files\California Instruments\PGUI32
Pgui32.exe
Pgui32.hlp
Pgui32.cnt
Executable
On Line Help file
Help Contents file
Windows System directory files
The following shared files are stored in the Windows\System directory during installation:
Mscomm32.ocx
ss32x25.ocx
Comdlg32.ocx
Comctl32.ocx
Msvbvm60.dll
Mfc42.dll
Msvcrt.dll
Oleaut32.dll
Microsoft Serial communications active control
Grid spreadsheet active control
Microsoft Common dialog active control
Microsoft Common controls
Microsoft Visual Basic 6.0 virtual machine library
Microsoft Foundation Classes
Microsoft Visual C++ run-time library
Microsoft OLE automation server
IEC Test Programs Directory Files
File name
Description
Generic IEC 1000-4-11 Voltage Variations Test.411_Vars
Test levels for IEC 1000-4-11
Generic IEC 1000-4-11 Voltage Dips Test.411_Dips
Test levels for IEC 1000-4-11
EN 61326-1 Voltage Interrupts.411_Dips
Test levels for IEC 1000-4-11
Generic IEC 1000-4-14 Test Level 1.414_Fluc
Test levels for IEC 1000-4-14
Generic IEC 1000-4-14 Test Level 2.414_Fluc
Test levels for IEC 1000-4-14
Generic IEC 1000-4-28 Freq Vars Test Level 1.428_Vars
Test levels for IEC 1000-4-28
Generic IEC 1000-4-28 Freq Vars Test Level 2.428_Vars
Test levels for IEC 1000-4-28
Generic IEC 1000-4-28 Freq Vars Test Level 3.428_Vars
Test levels for IEC 1000-4-28
User files for above tests may be distributed as well. These files use a 4XX_USER extension.
Test Sequence Program Directory Files
File name
Description
Sample sequence test file.SEQ
Sample output sequence file
Note: The location of these files as well as the files themselves may change with future versions
of the PGUI32. Consult the included readme file for last minute program information.
8.9
Software Registration
Updates of this and other California Instruments programs are posted on a regular basis on the
California Instruments web site. You can find available programs by selecting the Software, GUI's
and Drivers menu. To gain access to these downloads, you will need to register as a user on our
web site. Instructions on how to register and request the required access level for software
downloads, visit our web site at
www.calinst.com
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9
Introduction to SCPI
SCPI (Standard Commands for Programmable Instruments) is a programming language for
controlling instrument functions over the RS232 or IEEE 488 bus. The same SCPI commands
and parameters control the same functions in different classes of instruments. For example, you
would use the same MEAS:VOLT? command to measure the AC source output voltage or the
output voltage of a SCPI-compatible Multimeter.
9.1
Conventions Used in This Manual
Angle brackets<>
Vertical bar
Square Brackets[]
Boldface font
Upper case font
9.2
Items within angle brackets are parameter abbreviations. For example,
<NR1> indicates a specific form of numerical data.
Vertical bars separate alternative parameters. For example, 0 | 1
indicates that either "0" or "1" can be used as a parameter.
Items within square brackets are optional. The representation
[SOURce:]VOLT means that SOURce: may be omitted.
Boldface font is used to emphasize syntax in command definitions.
CURR <NRf> shows a command definition.
Upper case font is used to show program lines in text. OUTP 1 shows a
program line.
The SCPI Commands and Messages
This paragraph explains the syntax difference between SCPI Commands and SCPI messages.
The AC source supports two types of commands, IEEE-488-2 common and SCPI subsystem
commands.
IEEE-488-2 common commands are generally not related to specific operations but to
controlling overall AC source functions such as reset, status and synchronization. All
common commands consist of a three-letter mnemonic preceded by an asterisk:
*RST
*IDN? *SRE 255
SCPI Subsystem commands perform specific AC source functions. They are organized into
an inverted tree structure with the "root" at the top. Some are single commands while others
are grouped within specific subsystems. You must include the root header in all
commands sent to the AC source.
Refer to appendix A for the AC source SCPI tree structure.
Types of SCPI Messages
There are two types of SCPI messages, program and response.
A program message consists of one or more properly formatted SCPI commands sent from
the controller to the AC source. The message, which may be sent at any time, requests the
AC source to perform some action.
A response message consists of data in a specific SCPI format sent from the AC source to
the controller. The AC source sends the message only when commanded by a program
message called a "query."
The SCPI Command Tree
As previously explained, the basic SCPI communication method involves sending one or more
properly formatted commands from the SCPI command tree to the instrument as program
messages. The following figure shows a portion of a subsystem command tree, from which you
access the commands located along the various paths (you can see the complete tree in
appendix A).
Root
[:SOURce]
:SYSTem
:VOLTage
[:LEVel]
:CURRent
:RANGe
:REMote
:ERRor
:LIMit
:FREQuency
:LOW?
:HIGH?
Figure 9-1: Partial Command Tree
The Root Level
Note the location of the ROOT node at the top of the tree. Commands at the root level are at the
top level of the command tree. The SCPI interface is at this location when:
the AC source is powered on
a device clear (DCL) is sent to the AC source
the SCPI interface encounters a message terminator
the SCPI interface encounters a root specifier
Active Header Path
In order to properly traverse the command tree, you must understand the concept of the active
header path. When the AC source is turned on (or under any of the other conditions listed
above), the active path is at the root. That means the SCPI interface is ready to accept any
command at the root level, such as SOURCe or MEASurement.
If you enter SOURCe the active header path moves one colon to the right. The interface is now
ready to accept :VOLTage :FREQuency, or :CURRent as the next header. You must include the
colon, because it is required between headers.
If you now enter :VOLTage, the active path again moves one colon to the right. The interface is
now ready to accept either :RANGe or :LEVel as the next header.
If you now enter :RANGe you have reached the end of the command string. The active header
path remains at :RANGe If you wished, you could have entered :RANGe 150 ;LEVel 115 and it
would be accepted as a compound message consisting of:
1. SOUR:VOLT:RANG 150.
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TL Series
2. SOUR:VOLT:LEV 115.
The entire message would be:
SOUR:VOLT:RANG 150;LEV 115.
The message terminator after LEVel 115 returns the path to the root.
Note: The TL Series interface buffer is limited to 42 characters, however. As such, compound
commands are not recommended as they often exceed this message length limit.
Moving Among Subsystems
In order to combine commands from different subsystems, you need to be able to restore the
active path to the root. You do this with the root specifier (:). For example, you could set the
output frequency to 60 Hz and set the display mode to frequency.
FREQ 60
DISP:MODE 0
Because the root specifier resets the command parser to the root, you can use the root specifier
and do the same thing in one message:
FREQ 60;:DISP:MODE 0
Including Common Commands
You can combine common commands with system commands in the same message. Treat the
common command as a message unit by separating it with a semicolon (the message unit
separator). Common commands do not affect the active header path; you may insert them
anywhere in the message.
VOLTage 115;*ESE 255
OUTPut 0;*RCL 2
9.3
Using Queries
Observe the following precautions with queries:
Set up the proper number of variables for the returned data.
Read back all the results of a query before sending another command to the AC source.
Otherwise a Query Error will occur and the non-returned data will be lost.
9.4
Structure of a SCPI Message
SCPI messages consist of one or more message units ending in a message terminator. The
terminator is not part of the syntax, but implicit in the way your programming language indicates
the end of a line (such as a newline or end-of-line character).
The Message Unit
The simplest SCPI command is a single message unit consisting of a command header (or
keyword) followed by a message terminator.
FREQuency?<newline>
VOLTage?<newline>
The message unit may include a parameter after the header. The parameter usually is numeric:
VOLTage 20<newline>
OUTPut 1<newline>
Combining Message Units
The following command message is briefly described here, with details in subsequent
paragraphs.
Data
Query Indicator
Message Unit
Header
SOUR:VOLT 80; FREQ 60; :CURR? <NL>
Header Message
Separator Unit
Separator
Root
Message
Specifier Terminator
Figure 9-2: Command Message Structure
The basic parts of the above message are:
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Message Component
Headers
Header Separator
Data
Data Separator
Message Units
Message Unit Separator
Root Specifier
Query Indicator
Message Terminator
Note:
Example
SOURC VOLT FREQ CURR
The colon in SOUR:VOLT
80
60
The space in VOLT 80 and FREQ 60
VOLT 80
FREQ 60
CURR?
The semicolons in VOLT 80; and FREQ 60;
The colon in :CURR?
The question mark in CURR?
The <NL> (newline) indicator. Terminators are not part of the
SCPI syntax
The use of compound messages such as the one shown in Figure 12-2 is
not recommended as they typically exceed the available receive buffer
length of the TL/RP Series interface.
Headers
Headers are instructions recognized by the AC source. Headers (which are sometimes known as
"keywords") may be either in the long form or the short form.
Long Form
Short Form
The header is completely spelled out, such as VOLTAGE, SYSTEM, and
OUTPUT.
The header has only the first three or four letters, such as VOLT, SYST, and
OUTP.
The SCPI interface is not sensitive to case. It will recognize any case mixture, such as
VOLTAGE, VOLTage or Voltage. Short form headers result in faster program execution.
Note:
In view of the 42 character receive buffer size of the TL/RP Series, the
short form is recommended under all circumstances.
Header Convention
In the command descriptions in chapter 10 of this manual, headers are emphasized with
boldface type. The proper short form is shown in upper-case letters, such as DELay.
Header Separator
If a command has more than one header, you must separate them with a colon (SYSTem:ERRor
LIMit:FREQuency:LOW).
Optional Headers
The use of some headers is optional. Optional headers are shown in brackets, such as
VOLTage[:LEVel] 100.
Query Indicator
Following a header with a question mark turns it into a query (VOLTage?, VRANGe?).
Message Unit Separator
When two or more message units are combined into a compound message, separate the units
with a semicolon (VOLT 100;FREQ 60).
Root Specifier
When it precedes the first header of a message unit, the colon becomes the root specifier. It tells
the command parser that this is the root or the top node of the command tree. Note the
difference between root specifiers and header separators in the following examples:
SOURce:VOLTage:LEVel 100
:SOURce:VOLTage:LEVel 100
SOURce:VOLTage:LEVel 100;:FREQuency 55
All colons are header separators
Only the first colon is a root specifier
Only the third colon is a root specifier
You do not have to precede root-level commands with a colon; there is an implied colon in front
of every root-level command.
Message Terminator
A terminator informs SCPI that it has reached the end of a message. The only permitted
message terminator is:
newline (<NL>), which is ASCII decimal 10 or hex 0A.
In the examples of this manual, there is an assumed message terminator at the end of each
message. If the terminator needs to be shown, it is indicated as <NL> regardless of the actual
terminator character.
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9.5
SCPI Data Formats
All data programmed to or returned from the AC source is in ASCII. The data type may be
numerical or character string.
Numerical Data Formats
Symbol
Data Form
Talking Formats
<NR1>
Digits with an implied decimal point assumed at the right of the least-significant
digit. Examples: 273
<NR2>
Digits with an explicit decimal point. Example:.0273
<NR3>
Digits with an explicit decimal point and an exponent. Example: 2.73E+2
<Bool>
Boolean Data. Example: 0 | 1
Listening Formats
<Nrf>
Extended format that includes <NR1>, <NR2> and <NR3>. Examples: 273.2 ,
2.73E2
<Bool>
Boolean Data. Example: 0 | 1
Character Data
Character strings returned by query statements may take either of the following forms, depending
on the length of the returned string:
<CRD>
Character Response Data. Permits the return of character strings.
<AARD>
Arbitrary ASCII Response Data. Permits the return of undelimited 7-bit ASCII.
This data type has an implied message terminator.
<SRD>
String Response Data. Returns string parameters enclosed in double quotes.
10 SCPI Command Reference
Where appropriate, related commands or queries are included. These are listed because
they are either directly related by function, or because reading about them will clarify or
enhance your understanding of the original command or query.
This chapter is organized as follows:
Subsystem commands, arranged by subsystem
IEEE 488.2 common commands
10.1 Subsystem Commands
Subsystem commands are specific to AC source functions. They can be a single command
or a group of commands. The groups are comprised of commands that extend one or more
levels below the root. The description of common commands follows the description of the
subsystem commands.
The subsystem command groups are listed in alphabetical order and the commands within
each subsystem are grouped alphabetically under the subsystem. Commands followed by a
question mark (?) take only the query form. When commands take both the command and
query form, this is noted in the syntax descriptions.
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10.2 Calibration Subsystem
The commands in this subsystem allow you to do the following:
Enable and disable the calibration mode
Calibrate all measurement circuits and store new calibration coefficients in nonvolatile
memory.
Subsystem Syntax
CALibrate
:STATe
:MEASure
:CURRent
[:FSC]
:ZERO
:PCURrent
[:FSC]
:ZERO
:POWer
[:FSC]
:ZERO
:VOLTage
[:FSC]
:ZERO
[:SOURce]
:VOLTage
Enables or disables the calibration mode
Calibrate full scale AC current measurement
Trim AC current measurement offset
Calibrate full scale AC peak current measurement
Trim AC peak current measurement offset
Calibrate full scale AC power measurement
Trim AC power measurement offset
Calibrate full scale AC voltage measurement
Trim AC voltage measurement offset
Calibrate output voltage
10.2.1 Calibration State
CALibrate:STATe
This command puts the AC source in calibration mode. The calibration mode is required to
use the data entry form of the calibration commands. Without setting the correct state using
this command, only the query form can be used to query any calibration coefficients but no
new calibration can be performed. Calibration queries return the calibration coefficient for
the specified measurement parameter. Calibration coefficients range from -127 to + 127.
Note
Any changes made to calibration coefficients are not saved in non-volatile
memory until the SYSTem:SAVE command is issued before turning the Cal
state off.
CAL:STAT 0
CAL:STAT 1
Command Syntax
Parameters
Examples
Related Commands
Turns calibration mode off.
Turns calibration mode on.
CALibrate:STATe 0|1
<Bool>
CAL:STAT 1
CAL:STAT 0
CAL[:SOUR]
CAL:MEAS
SYST:SAVE
10.2.2 Measurement Calibration
All measurement calibrations are performed by adjusting the measurement reading up or
down using a calibration coefficient. The coefficient value ranges from -127 (adjust full-scale
downward, zero upward) to + 127 (adjust full-scale upward, zero downward). When used in
combination with the MEAS commands, an automated measurement calibration procedure
can be implemented by adjusting the coefficient and reading the new measurement value
iteratively until the delta between an external reference measurement device and the AC
source internal measurement is within the specified accuracy.
CALibrate:MEASure:CURRent[:FSCale]
This command affects the calibration of the AC current measurement at full scale.
Command Syntax
Parameters
Examples
Query Syntax
Returned Parameters
Related Commands
CALibrate:MEASure:CURRent[:FSCale] <NRf>
<NRf> (value range -127 to +127)
CAL:MEAS:CURR -23
CALibrate:MEASure:CURRent?
<NR1> (value range -127 to +127)
CALibrate:MEASure:VOLTage
CALibrate:MEASure:CURRent:ZERO <NRf>
This command affects the calibration of the AC current measurement zero offset.
Command Syntax
Parameters
Examples
Query Syntax
Returned Parameters
Related Commands
CALibrate:MEASure:CURRent:ZERO <NRf>
<NRf> (value range -127 to +127)
CAL:MEAS:CURR:ZERO +12
CALibrate:MEASure:CURRent:ZERO?
<NR1> (value range -127 to +127)
CALibrate:MEASure:CURRent
CALibrate:MEASure:PCURrent[:FSCale] <NRf>
This command affects the calibration of the AC peak current measurement at full scale.
Command Syntax
Parameters
Examples
Query Syntax
Returned Parameters
Related Commands
84
CALibrate:MEASure:CURRent[:FSCale] <NRf>
<NRf> (value range -127 to +127)
CAL:MEAS:CURR -23
CALibrate:MEASure:CURRent?
<NR1> (value range -127 to +127)
CALibrate:MEASure:VOLTage
September 2006
TL Series
CALibrate:MEASure:PCURrent:ZERO <NRf>
This command affects the calibration of the AC current measurement zero offset.
Command Syntax
Parameters
Examples
Query Syntax
Returned Parameters
Related Commands
CALibrate:MEASure:CURRent:ZERO <NRf>
<NRf> (value range -127 to +127)
CAL:MEAS:CURR:ZERO +12
CALibrate:MEASure:CURRent:ZERO?
<NR1> (value range -127 to +127)
CALibrate:MEASure:CURRent
CALibrate:MEASure:POWer[:FSCale] <NRf>
This command affects the calibration of the power measurement at full scale.
Command Syntax
Parameters
Examples
Query Syntax
Returned Parameters
Related Commands
CALibrate:MEASure:POWer[:FSCale] <NRf>
<NRf> (value range -127 to +127)
CAL:MEAS:POW 78
CALibrate:MEASure:POWer?
<NR1> (value range -127 to +127)
CALibrate:MEASure:CURRent
CALibrate:MEASure:POWer:ZERO <NRf>
This command affects the calibration of the power measurement zero offset.
Command Syntax
Parameters
Examples
Query Syntax
Returned Parameters
Related Commands
CALibrate:MEASure:POWer:ZERO <NRf>
<NRf> (value range -127 to +127)
CAL:MEAS:POW:ZERO -5
CALibrate:MEASure:POWer:ZERO?
<NR1> (value range -127 to +127)
CALibrate:MEASure:POWer
CALibrate:MEASure:VOLTage[:FSCale] <NRf>
This command affects the calibration of the rms voltage measurement at full scale.
Command Syntax
Parameters
Examples
Query Syntax
Returned Parameters
Related Commands
CALibrate:MEASure:VOLTage[:FSCale] <NRf>
<NRf> (value range -127 to +127)
CAL:MEAS:VOLT 56
CALibrate:MEASure:VOLTage?
<NR1> (value range -127 to +127)
CALibrate:MEASure:CURRent
CALibrate:MEASure:VOLTage:ZERO <NRf>
This command affects the calibration of the rms voltage measurement zero offset.
Command Syntax
Parameters
Examples
Query Syntax
Returned Parameters
Related Commands
CALibrate:MEASure:VOLTage:ZERO <NRf>
<NRf> (value range -127 to +127)
CAL:MEAS:VOLT:ZERO +4
CALibrate:MEASure:VOLTage:ZERO?
<NR1> (value range -127 to +127)
CALibrate:MEASure:VOLTage
10.2.3 Output Calibration
The AC voltage output calibration is performed by adjusting the output up or down using a
calibration coefficient. The coefficient ranges from -127 (adjust upward) to + 127 (adjust
downward). An external traceable reference AC voltmeter should be used for this purpose.
CALibrate[:SOURce]:VOLTage <NRf>
This command will set the calibration coefficient for the AC full scale output voltage.
Command Syntax
Parameters
Examples
Query Syntax
Returned Parameters
Related Commands
86
CALibrate[:SOURce]:VOLTage <NRf>
<NRf> (a value between -127 and +127)
CAL:VOLT -2
CALibrate:VOLTage?
<NR1> (value range -127 to +127)
CAL:STAT
September 2006
TL Series
10.3 Measurement Subsystem
This subsystem programs the measurement capability of the TL Series AC source.
Subsystem Syntax
:MEASure
:VOLTage?
:CURRent?
:AMPLitude
:MAX?
:RESet
:CREStfactor?
:RANGe
:POWer
[:REAL]?
:APParent?
PFACtor?
Returns the rms value of voltage
Returns the rms value of current
Returns peak current
Reset the peak current measurements
Returns current crest factor
Selects measurement range 0 = High, 1 = Low, 2 = AUTO
Returns real power in Watt
Returns apparent power in VA
Returns power factor
MEASure:VOLTage?
This query returns the AC rms voltage being sourced at the output terminals. Note that the
output relay must be closed or no voltage will be present at the output terminals.
Query Syntax
Parameters
Examples
Returned Parameters
Related Commands
MEASure:VOLTage?
None
MEAS:VOLT?
<NR2>
OUTP 0 1
MEASure:CURRent?
This query returns the rms value of the output AC current being sourced at the output
terminals. Note that the output relay must be closed to obtain current flow.
Query Syntax
Parameters
Examples
Returned Parameters
Related Commands
MEASure:CURRent?
None
MEAS:CURR?
<NR2>
OUTP 0 1
MEAS:CURR:AMPL:MAX?
MEASure:CURRent:AMPLitude:MAX?
This query returns the peak current value of the output AC current being sourced at the
output terminals. Note that the output relay must be closed to obtain current flow. The peak
current measurement circuit uses a sample and hold method and latches the highest peak
current value found since the last peak measurement reset command.
Query Syntax
Parameters
Examples
Returned Parameters
Related Commands
MEASure:CURRent:AMPLitude:MAX?
None
MEAS:CURR:AMPL:MAX?
<NR2>
OUTP 0 1
MEAS:CURR?
MEASure:CURRent:AMPLitdue:RESet
This command resets the peak current measurement sample and hold circuit to zero.
Query Syntax
Parameters
Examples
Related Commands
MEASure:CURRent:AMPLitude:RESet
None
MEAS:CURR:AMPL:RES
MEAS:CURR:AMPL:MAX?
MEASure:CURRent:CREStfactor?
This query returns the rms value of the output AC current being sourced at the output
terminals. Note that the output relay must be closed to obtain current flow.
Query Syntax
Parameters
Examples
Returned Parameters
Related Commands
MEASure:CURRent:CREStfactor?
None
MEAS:CURR:CRES?
<NR2>
MEAS:CURR? MEAS:CURR:AMPL:MAX?
MEASure:CURRent:RANGe
This commands selects the measurement range to use for current, peak current and power
measurements. Available choices are high range (0), low range (1) or auto ranging (2).
Query Syntax
Parameters
Examples
Returned Parameters
Related Commands
88
MEASure:CURRent:RANGe
0|1|2
MEAS:CURR:RANG?
<NR2>
MEAS:CURR? MEAS:CURR:AMPL:MAX?
September 2006
TL Series
MEASure:POWer[:REAL]?
This query returns the true power delivered to the unit under test by the AC source. Note that
the output relay must be closed to obtain current flow.
Query Syntax
Parameters
Examples
Returned Parameters
Related Commands
MEASure:POWer[:REAL]?
None
MEAS:POW?
<NR2>
MEAS:VOLT? MEAS:CURR?
MEASure:POWer:APParent?
This query returns the apparent power delivered to the unit under test by the AC source.
Note that the output relay must be closed to obtain current flow.
Query Syntax
Parameters
Examples
Returned Parameters
Related Commands
MEASure:POWer:APParent?
None
MEAS:POW:APP?
<NR2>
MEAS:POW?
MEASure:POWer:PFACtor?
This query returns the power factor. The power factor is the ratio between real power and
apparent power. This value is always between 0.00 and 1.00. If the current measured is too
low to determine the power factor, a 1.00 value is returned.
Query Syntax
Parameters
Examples
Returned Parameters
Related Commands
MEASure:POWer:PFACtor?
None
MEAS:POW:PFAC?
<NR2>
MEAS:POW? MEAS:POW:APP?
10.4 Source Subsystem
This subsystem programs all the output parameters of the TL Series AC source.
Subsystem Syntax
[SOURce:]
CURRent:
VOLTage:
[LEVel]
RANGe:
[LEVel]
AUTO
FREQuency:
Set the rms current limit in amps.
Set the rms output voltage value in volts.
Set the output voltage range.
Enables or disables the AUTO range mode.
Set the output frequency value in Hz.
[SOURce:]CURRent
This command sets the rms current limit of the output. If the load current exceeds the
programmed current limit, the unit responds in one of two ways, depending on the current
limit mode that is configured. (Hardware configuration only). In the default constant current
mode, the output voltage will fold back as much as needed to retain the current at the
programmed limit. No error message is generated when operating in this mode. If constant
voltage mode is configured instead, the output latches into a disabled state when current
limiting occurs. The output voltage is set to 5.0 volt when this condition occurs and the
output relay state is set to 0 (output relay open). A “ 300, Device specific error” fault is
generated.
Note that the CURRent command is coupled with the VRANGe. This means that the
maximum current limit that can be programmed at a given time depends on the voltage
range setting in which the unit is presently operating.
Command Syntax
Parameters
Unit
*RST
Examples
Query Syntax
Returned Parameters
Related Commands
90
[SOURce:]CURRent <NRf>
0 to a value specified by the LIM:CURR
A (rms amperes)
Defined by the PON
CURR 5
CURRent?
<NR2>
VOLT:RANG
September 2006
TL Series
[SOURce:]FREQuency
This command sets the frequency of the output sinewave.
Command Syntax
Parameters
Unit
*RST Value
Examples
Query Syntax
Returned Parameters
Related Commands
[SOURce:]FREQuency <NRf>
range specified by the LIM:FREQ:LOW and LIM:FREQ:HIGH
commands
Hz (Hertz)
defined by PON
FREQ 50
FREQuency?
<NR2>
LIM:FREQ;LOW? LIM:FREQ:HIGH?
[SOURce:]VOLTage
This command programs the AC rms output voltage level of the power source. The
maximum voltage value allowed is determined by the selected voltage range. For 251/351TL
models configured for single voltage range, only one range is available.
Command Syntax
Parameters
Unit
*RST Value
Examples
Query Syntax
Returned Parameters
Related Commands
[SOURce:]VOLTage[:LEVel] <NRf>
0 to maximum voltage range specified by the VRAN command
V (rms voltage)
0 volt
VOLT 250
VOLT:LEV 25
[SOURce:]VOLTage[:LEVel]?
<NR2>
VOLT:RANGe
[SOURce:]VOLT:RANGe[:LEVel]
This command sets the voltage range of the power source . Two voltage ranges are
available: a 135 volt range and a 270 volt range. However, TL units with optional voltage
ranges are available as well. In this case, the actual voltage range values will be different. To
determine the actual range values, use the query format of the RANGE command. The
returned values for high and low range (eg. 135 and 270) should be used to change range.
In most cases, the high voltage range value will be two times the low voltage range value.
Sending a parameter other than the actual range values will not be accepted.
For TL models configured for single voltage range, only one range is available. In this case,
the VOLT:RANG commend will return the value for the only available range. Attempting to
select any other voltage range will result in a “–100, Command Error”. The presence of a
single voltage range unit may be determined using the Limit subsystem, see section 10.6.
Some TL Series may use other voltage range values than shown here. It is recommended to
query the actual range values using the LIM:VOLT? query as part of your application
program. See section 10.6.
When the range is set to 135, the maximum rms voltage that can be programmed is 135
volts.
The VOLT:RANG command is coupled with the CURRent command. This means that the
maximum current limit that can be programmed at a given time depends on the voltage
range setting in which the unit is presently operating.
Command Syntax
Parameters
*RST Value
Examples
Query Syntax
Returned Parameters
Related Commands
92
[SOURce:]VOLTage:RANGe[:LEVel] <NRf>
135 | 270
defined by the PONS
VOLT:RANG 135
VOLT:RANGe?
<NR2>
VOLT
LIM:VOLT? VOLT:RANG:AUTO
September 2006
TL Series
[SOURce:]VOLT:RANGe:AUTO
This command sets the AC source range to the AUTO mode. While in AUTO mode, the AC
source automatically switches to the optimal voltage range for the voltage programmed.
Note that switching voltage ranges causes the output to be interrupted momentarily. If power
to the unit under test cannot be interrupted, the AUTO range should not be used.
To determine the actual voltage range in which the unit is operating, the VOLT:RANG?
command query can be used.
For TL models configured for single voltage range, only one range is available. In this case,
the VOLT:RANGe:AUTO command has no meaning and should not be used.
The maximum current limit that can be programmed at a given time depends on the voltage
range setting in which the unit is presently operating. Programming a current limit value that
exceeds the high voltage range capability does NOT cause the voltage range to change,
even while in AUTO mode. Only voltage changes can prompt an automatic voltage range
change.
Command Syntax
Parameters
*RST Value
Examples
Query Syntax
Returned Parameters
Related Commands
[SOURce:]VOLTage:RANGe:AUTO <Bool>
<Bool> 0 | 1
0
VOLT:RANG:AUTO 1
VOLT:RANG:AUTO?
<Bool>
VOLT
LIM:VOLT? VOLT:RANG:LEV
10.5 Output Subsystem
This subsystem controls the main output function of the RP Series source.
Subsystem Syntax
OUTPut
[:RELay]
DROP
STARt:
[STATe]
PHASe
Opens or closes the output relay.
Drops the output voltage for a specified amount of time or
indefinitely.
Enables or disables the start phase angle mode
Sets the start phase angle value in degrees.
OUTPut[:RELay]
The output of the AC source can be isolated from the unit under test by opening the output
relay. The programmed output voltage is set to zero before opening the relay and is returned
to its programmed value when closing the relay. This avoids hot switching the output relay
contacts.
Command Syntax
Parameters
*RST Value
Examples
Query Syntax
Returned Parameters
Related Commands
94
OUTPut[:RELay] <bool>
<Bool> 0 | 1
defined by the PONS
OUTP 1
OUTPut?
0|1
OUTP:DROP OUTP:STAR
September 2006
TL Series
OUTPut:DROP
The output drop command may be used to interrupt the voltage to the UUT without opening
the output relay. This method used an electronic means of interrupting the AC source output
which enables short interruptions of as little as 1 msec or as long as 4000 sec.
In addition to short interruption times, the drop command can be set to use any of four start
phase angles at which to execute the voltage drop.
The parameter passed with the OUTP:DROP command is the drop duration in seconds.
This value can range from 0.001 ( 1 msec) to 4000 ( 1 hour, 6 min, 40 sec) but only four
digits of resolution are allowed. If no parameter is passed, the output is drop indefinitely or
until a voltage command is issued. Thus valid time periods are:
Time range
0.001 - 9.999
1 msec to 10 secs
10.00 - 99.99
10 secs to 100 secs
100.0 - 999.9
100 secs to 1000 secs
1000 - 4000
1000 secs to 4000 secs
no parameter
Infinite time. Use VOLT command to turn output on.
Turing on output voltage at a specified phase angle
The following command sequence will turn the output voltage on at a specified phase angle.
This may be required to measure worst case inrush current.
/* Set up sequence
VOLT 0
OUTP 1
OUTP:STAR:STAT 1
OUTP:STAR:PHAS 90
OUTP:DROP
/* Turn on sequence
VOLT 230
Set output voltage to zero
Close output relay
Enable start phase mode
Set start phase angle to 90 degrees
Put AC source in infinite drop mode
Turn on voltage to 230 V at 90 degrees
Output drop status query
The status of a drop in progress can be queried using the query format of the OUTP:DROP
command. This query will return a <Bool> indicating if the output time specified has expired
(0) or the drop is still in progress (1).
Command Syntax
Parameters
*RST Value
Examples
Query Syntax
Returned Parameters
Related Commands
OUTPut:DROP <NRf>
<NRf> | none
none
OUTP:DROP 0.001
OUTP:DROP?
0|1
OUTP:STAR:STAT
OUTP:STAR:PHAS
OUTPut: STARt[:STATe]
The output start state command is used to enable or disable the start phase logic of the AC
source controller. If disabled (State = 0), any voltage drops with the OUTP:DROP command
or voltage changes with the VOLT command are executed immediately without regard for the
phase angle of the output sinewave.
If enable (State = 1), any voltage drops or voltage changes take place at one of four user
specified phase angles. See the OUTP:STAR:PHAS command for available phase angle
settings.
Command Syntax
Parameters
*RST Value
Examples
Query Syntax
Returned Parameters
Related Commands
OUTPut:STARt[:STATe] <bool>
<Bool> 0 | 1
0
OUTP:STAR 1
OUTP:STAR?
0|1
OUTP:DROP OUTP:STAR:PHAS
OUTPut: STARt:PHASe
The output start phase command is used to set the start phase angle for drop or voltage
programming commands. This phase angle information is used only if the
OUTP:DROP:STATe is on (1). If not, all drops and voltage changes occur at random phase
angles.
Available phase angle values are 0°, 90°, 180° and 270°. All other values when passed as a
parameter to this command will generate a syntax error.
Command Syntax
Parameters
*RST Value
Examples
Query Syntax
Returned Parameters
Related Commands
96
OUTPut:STARt:PHASe <NR2>
0 | 90 | 180 | 270
0
OUTP:STAR:PHAS 90
OUTPut?
0 | 90 | 180 | 270
OUTP:DROP OUTP:STAR:STAT
September 2006
TL Series
10.6 Limit Subsystem
This subsystem controls the voltage frequency and current limit of the power source. These
limits are set at the factory and depend on the power source rating. It is not accessible by the
user. The query format is accessible however.
Subsystem Syntax
LIMit:
CURRent?
FREQuency:
LOW?
HIGH?
VOLTage?
Queries the upper current limit
Queries the lower frequency limit
Queries the upper frequency limit
Queries the upper voltage limit
LIMit:CURRent?
This command queries the maximum current limit the power source will operate at in the low
voltage range.
Command Syntax
Parameters
Query Syntax
Returned Parameters
LIMit:CURRent <NRf>
maximum current limit at low voltage range
protected]
LIMit:CURRent?
<NR2>
[command
LIMit:FREQuency:LOW?
This command queries the lower frequency limit of the power source. On some TL models,
the frequency range may have been factory configured to a fixed single value. In this case,
the High and Low frequency limits will be set to the same value and both queries will return
the same number. Sending a frequency command with any value other than the set value
will result in a “-100, Command Error”.
Command Syntax
Parameters
Query Syntax
Returned Parameters
LIMit:FREQuency:LOW <NRf>
Low freq limit [command protected]
LIMit:FREQuency:LOW?
<NR2>
LIMit:FREQuency:HIGH?
This command queries the upper frequency limit of the power source. On some TL models,
the frequency range may have been factory configured to a fixed single value. In this case,
the High and Low frequency limits will be set to the same value and both queries will return
the same number. Sending a frequency command with any value other than the set value
will result in a “-100, Command Error”.
Command Syntax
Parameters
Query Syntax
Returned Parameters
LIMit:FREQuency:HIGH <NRf>
High freq limit [command protected]
LIMit:FREQuency:HIGH?
<NR2>
LIMit:VOLTage?
This command queries the maximum voltage the power source will operate at in the high
voltage range. For TL models configured for single voltage range, only one range is
available. In this case, this command will return the value for the only available voltage
range. The presence of a single range configuration can be derived from the limit value
returned. If the voltage limit value is less than 201 volt, the TL is configured for single voltage
range operation. If a value above 200 volt is returned, the TL has a high and a low voltage
range. On dual range configurations, the maximum voltage in the high range is returned and
this value must be even. The low range value is half that of the high range. On single
voltage range units, the value voltage of the only available range is returned and this value
can be odd or even.
Only the Query format of this command is available to the user.
Command Syntax
Parameters
Query Syntax
Returned Parameters
98
LIMit:VOLTage<NRf>
maximum voltage available in high voltage range [command
protected]
LIMit:VOLTage?
<NR2>
September 2006
TL Series
10.7 Display Subsystem
DISPlay:MODE
This command is used to control the right hand side AC source display. The command will
allow the multifunction 7 segment LED display to switch between display of frequency,
current, peak current, power or power factor data.
The encoding for the mode command is as shown in the table below,
Parameter
Frequency
1
Current
2
Peak Current
3
Power
4
Power Factor
5
Table 10-1: Mode Command Encoding
Command Syntax
Parameters
*RST Value
Examples
Query Syntax
Returned Parameters
Related Commands
Value
DISPlay:MODE <NR2>
1|2|3|4|5
1
DISP:MODE 2
DISPlay:MODE?
<NR1>
none
10.8 System Commands
The system commands control the system level functions of the AC Source.
Subsystem Syntax
SYSTem:
ERRor?
KLOCk
LOCal
PON
REMote
SAVE
Returns the error number and error string
Keyboard Lock. Sets the power on REMOTE/LOCAL state.
Go to local mode
Define the power on register number
Go to remote mode
Saves calibration coefficients if calibration state is on
SYSTem:ERRor?
This query returns the next error number followed by its corresponding error message string
from the remote programming error queue. The queue is a FIFO (first-in, first-out) buffer that
stores errors as they occur. As it is read, each error is removed from the queue. When all
errors have been read, the query returns 0,”No Error”. If more errors are accumulated than
the queue can hold, the last error in the queue is -350,”Queue overflow”.
Query Syntax
Parameters
Returned Parameters
Example
SYSTem:ERRor?
None
<NR1>,<SRD>
SYST:ERR?
SYSTem:KLOCk
This command sets or clears the power on LOCAL or REMOTE state. When set (1), the AC
Source will power up in remote state, locking out all keyboard controls. The local state can
only be entered by sending a bus command. This mode may be used to prevent operator
access to front panel controls under all conditions. Note that changing the state of the KLOC
setting does not change the REMOTE or LOCAL state. This setting only affects the
REMOTE/LOCAL state at power-up.
Command Syntax
Parameters
Example
Query Syntax
Returned Parameters
Related Commands
SYSTem:KLOCk
0|1
SYST:KLOC 1
SYST:KLOC?
<NR1>
SYST:REM
SYST:LOC
SYSTem:LOCal
This command sets the interface in Local state, which enables the front panel controls. This
command only applies to the RS232C interface. If IEEE 488 is used, the remote/local state
is determined by the REN line on the IEEE 488 interface.
Command Syntax
Parameters
Example
Related Commands
100
SYSTem:LOCal
None
SYST:LOC
SYST:REM
September 2006
TL Series
SYSTem:REMote
This command sets the interface in the Remote state, which disables all front panel controls.
This command only applies to the RS232C interface. If IEEE 488 is used, the remote/local
status is determined by the REN line on the IEEE 488 interface.
Command Syntax
Parameters
Example
Related Commands
SYSTem:REMote
None
SYST:REM
SYST:LOC
SYSTem:PON
This command is used to define the register value the power source will use to initialize its
parameters at power up. If data in the selected register is not valid or the selected register is
8, the initialization will be with factory default values. Refer to Table 4-1: Factory Default
Power on Settings on page 31.
Command Syntax
Parameters
Examples
Query Syntax
Returned Parameters
Related Commands
SYSTem:PON <NRf>
0 to 8 or 0 to 7 for -AV option units
SYST:PON 1
SYST:PON?
<NR1>
*SAV
SYSTem:SAVE
This command saves the calibration coefficients for output and measurement calibration to
the non volatile memory of the AC source. This command is only valid while the AC source
is in the Calibration mode. (See section 10.2.1 for details).
Command Syntax
Parameters
Examples
Related Commands
SYSTem:SAVE
none
SYST:PON
CAL:STAT
10.9 Common Commands
Common commands begin with an * and consist of three letters (command) or three letters
and a ? (query). Common commands are defined by the IEEE 488.2 standard to perform
some common interface functions. The power source responds to the required common
commands that control status reporting, synchronization, and internal operations. RP Series
units also respond to optional common commands that control stored operating parameters.
Common commands and queries are listed alphabetically. If a command has a
corresponding query that simply returns the data or status specified by the command, then
both command and query are included under the explanation for the command. If a query
does not have a corresponding command or is functionally different from the command, then
the query is listed separately. The description for each common command or query specifies
any status registers affected. Refer to Chapter 12 which explains how to read specific
register bits and use the information that they return.
Common Commands Syntax
*CLS
*ESE <n>
*ESE?
*ESR?
*IDN?
*RCL <n>
*RST
*SAV <n>
*SRE <n>
*SRE?
*STB?
102
Clear status
Standard event status enable
Return standard event status enable
Return event status register
Return instrument identification
Recall instrument state
Reset
Save instrument state
Set service request enable register
Return service request enable register
Return status byte
September 2006
TL Series
10.9.1 *CLS
This command clears the following registers (see chapter 12 for descriptions of all status
registers):
Standard Event Status
Status Byte
Error Queue
Command Syntax
Parameters
*CLS
None
10.9.2 *ESE
This command programs the Standard Event Status Enable register bits. The programming
determines which events of the Standard Event Status Event register (see *ESR?) are
allowed to set the ESB (Event Summary Bit) of the Status Byte register. A "1" in the bit
position enables the corresponding event. All of the enabled events of the Standard Event
Status Enable Register are logically OR-ed to cause the Event Summary Bit (ESB) of the
Status Byte Register to be set. See Section 16 for descriptions of the Standard Event Status
registers.
The query reads the Standard Event Status Enable register.
Table 10-2: Bit Configuration of Standard Event Status Enable Register
Bit Position
7
6
5
4
3
2
1
0
Bit Name
PON
not
used
CME
EXE
DDE
QYE
not
used
not
used
Bit Weight
128
32
16
8
4
CME
Command error
DDE
Device-dependent error
EXE
Execution error
QYE
Query error
PON
Power-on
Command Syntax
Parameters
Power-On Value
Example
Query Syntax
Returned Parameters
Related Commands
*ESE <NRf>
0 - 255
128
*ESE 129
*ESE?
<NR1>(Register value)
*ESR? *STB?
10.9.3 *ESR?
This query reads the Standard Event Status register. Reading the register clears it. The bit
configuration of this register is the same as the Standard Event Status Enable register (see
*ESE).
Query Syntax
Parameters
Returned Parameters
Related Commands
*ESR?
None
<NR1>(Register value)
*CLS *ESE *ESE?
If the *ESR? returns the value of the status bits in the ESR register. Refer to Table 10-3 for
the status bits and their meaning.
Table 10-3: Bit Configuration of Standard Event Status Register
Bit Position
104
7
6
5
4
3
2
1
0
Bit Name
PON
not
used
CME
EXE
DDE
QYE
not
used
not
used
Bit Weight
128
32
16
8
4
CME
Command error
DDE
Device-dependent error
EXE
Execution error
QYE
Query error
PON
Power-on
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TL Series
10.9.4 *IDN?
This query requests the source to identify itself. It returns the data in four fields separated by
commas. Note that any installed options are not reflected in the *IDN? query response. The
presence of these options that may affect the power source‟s capabilities must be
determined by querying the Limit system. See section 10.6.
Query Syntax
Returned Parameters
Example
*IDN?
<AARD>
Field
Information
CI
Manufacturer
xxxxxx
Model number and letter
nnnnnn
Serial number or 0
Rev. x.x
Revision level of firmware
"CI,351TL,12345,Rev 1.0"
The following table shows the series of queries that may be used to detect the presence of a
TL and to determine the frequency range setting of a TL Series unit:
Step
1
2
Query command
*IDN?
LIM:VOLT?
3
LIM:FREQ:LOW?
4
LIM:FREQ:HIGH?
Response
"CI,351TL,12345,Rev 1.0"
270
135
16
400
8000
400
Interpretation
TL series unit
251/351TL standard unit
251/351TL, single Vrange
Standard frequency range
Fixed 400 Hz
Standard frequency range
Fixed 400 Hz
10.9.5 *RCL
This command restores the AC source to a state that was previously stored in memory with a
*SAV command to the specified location. The TL Series offers eight non-volatile memory
locations for storing instrument setups.
Command Syntax
Parameters
Example
Related Commands
WARNING:
*RCL <NRf>
0 through 7
*RCL 3
*RST *SAV
Recalling a previously stored state may place hazardous voltages at
the AC source output if the output relay state saved is ON.
10.9.6 *RST
This command resets the AC source to a setting defined by the values in the register defined
by PON if valid or by the following factory-defined states:
Table 10-4: *RST Default Parameter Values
Item
Value
Item
Value
VOLT
5.0 V
FREQ
60 Hz
CURR
2.8 351TL
2.6 251TL
VOLT:RANGe:LEVel
135 V
VOLT:RANGe:AUTO
0 (OFF)
OUTP
0 (OFF)
DISP:MODE
1 (FREQ)
OUTP:STARt:STATe
0 (OFF)
OUTP:STARt:PHASe
0
NOTE: The factory defaults cannot be used on units set to 400 Hz fixed frequency.
Instead, one of the setup registers 0 through 7 must be selected for the power
on state. Executing the *RST command will recall the settings from the
assigned setup register. Use the SYSTem:PON to select one of the available
setup registers for the power on and *RST states.
Command Syntax
Parameters
Related Commands
*RST
None
*SAV
Table 10-5: Status Registers - Power on Conditions
106
Register
Status on Power On
Status after *RST
- ESE register
All 0‟s
All 0‟s
- ESR register
PON bit = 1, all others 0
PON = 0, all others unaffected
- STB register
All 0‟s
All 0‟s
- SRE register
All 0‟s
All 0‟s
September 2006
TL Series
10.9.7 *SAV
This command stores the present state of the AC source to a specified location in memory.
The RP Series offers eight non-volatile memory locations for storing instrument setups.
Command Syntax
Parameters
Related Commands
*SAV
0 through 7
*RCL *RST
10.9.8 *SRE
This command sets the condition of the Service Request Enable Register. This register
determines which bits from the Status Byte Register (see *STB for its bit configuration) are
allowed to set the Master Status Summary (MSS). A 1 in any Service Request Enable
Register bit position enables the corresponding Status Byte Register bit and all such enabled
bits then are logically OR-ed to cause Bit 6 of the Status Byte Register to be set. See Section
12 for more details concerning this process.
When the controller conducts a STB? command, the MSS bit is not cleared. When *SRE is
cleared (by programming it with 0), the source cannot generate an MSS bit.
Command Syntax
Parameters
Default Value
Example
Query Syntax
Returned Parameters
Related Commands
*SRE <NRf>
0 to 255
128
*SRE 255
*SRE?
<NR1>(Register binary value)
*ESE *ESR
10.9.9 *STB?
This query reads the Status Byte register, which contains the status summary bits and the
Output Queue MAV bit. Reading the Status Byte register does not clear it. The input
summary bits are cleared when the appropriate event registers are read (see Section 12 for
more information).
Table 10-6: Bit Configuration of Status Byte Register
Bit Position
7
6
5
4
3
2-0
Bit Name
OPER
MSS
ESB
MAV
QUES
not used
Bit Weight
128
64
32
16
8
OPER
operation status summary
ESB
event status byte summary
QUES
questionable status summary
Query Syntax
Returned Parameters
108
MSS
master status summary
MAV
message available
*STB?
<NR1> (Register binary value)
September 2006
TL Series
11 Programming Examples
11.1 Introduction
This chapter contains examples on how to program the AC source. Simple examples show
you how to program:
Output functions such as voltage and frequency
Measurement functions
The examples in this chapter use generic SCPI commands. See Section 9 for information
about encoding the commands as language strings. Where appropriate, optional commands
are shown for clarity in the examples.
11.2 Programming the Output
Power-on Initialization
When the AC source is first turned on, it wakes up with the output state defined by the PON
register number. If the register number or the register has no valid data, the AC source
initializes to the following state.
VOLT 5.0
FREQ 60
OUTP 0
VOLT:RANG 135
The following commands are given implicitly at power-on:
*RST
*CLS
*SRE 128
*ESE 0
*RST is a convenient way to program all parameters to a known state. Refer to Table 10-4
under the *RST command in paragraph 10.9.6 to see how each programmable parameter is
set by *RST.
Enabling the Output
To enable the output, use the command:
OUTPut 1
Voltage and Frequency
The AC rms output voltage is controlled with the VOLTage command. For example, to set
the AC output voltage to 125 volts rms, use:
VOLTage 125
The maximum voltage that the AC source can output is limited by the rms value of the
waveform. This value is defined by the LIMIT subsystem.
Voltage Ranges
The power source has two voltage ranges that are controlled by a relay. The command that
controls the range is:
VOLTage:RANGe 135 | 270
When the range is set to (135), the maximum rms voltage that can be programmed is 135
volts rms, but it is only on this range that the maximum output current rating is available.
The VOLT:RANGe command is coupled with the CURRent command. This means that the
maximum current limit that can be programmed at a given time depends on the voltage
range setting in which the unit is presently operating.
Frequency
The output frequency is controlled with the FREQuency command. To set the output
frequency to 50 Hz, use:
FREQuency 50
Turning on output voltage at a specified phase angle
The following command sequence will turn the output voltage on at a specified phase angle.
This may be required to measure worst case inrush current.
/* Set up sequence
VOLT 0
OUTP 1
OUTP:STAR:STAT 1
OUTP:STAR:PHAS 90
OUTP:DROP
/* Turn on sequence
VOLT 230
Set output voltage to zero
Close output relay
Enable start phase mode
Set start phase angle to 90 degrees
Put AC source in infinite drop mode
Turn on voltage to 230 V at 90 degrees
Current Limit
To set the RMS current limit use:
CURRent <n>
where <n> is the RMS current limit in amperes.
If the load attempts to draw more current than the programmed limit, The AC source is
programmed to turn off its output if the RMS current limit is reached.
Note:
110
The CURRent command is coupled with the VOLTage:RANGe.This means
that the maximum current limit that can be programmed at a given time
depends on the voltage range setting in which the unit is presently
operating.
September 2006
TL Series
11.3 Making Measurements
The source has the capability to return current, peak current, crest factor, true power,
apparent power, power factor and voltage measurements.
Voltage Measurement
To measure the RMS voltage, use:
OUTP 1
MEAS:VOLT?
/* Close output relay if it was not closed already.
Current Measurements
To measure the RMS current, use:
MEAS:CURR?
To measure the peak current, use:
MEAS:CURR:AMPL:RES
MEAS:CURR:AMPL:MAX?
/* resets track and hold for peak curr. meas.
/* It may be need to turn the output on or program
/* as specific voltage at this time before taking a
/* peak current reading.
/* retrieves peak current reading.
To measure the current crest factor, use:
MEAS:CURR:CRES?
Power Measurements
To measure the true power, use:
MEAS:POW:REAL?
To measure the apparent power, use:
MEAS:POW:APP?
To measure the power factor, use:
MEAS:POW:PFAC?
12 Status Registers
You can use status register programming to determine the operating condition of the AC
source at any time. For example, you may program the AC source to generate an MSS bit
when an event such as a current limit occurs. When the MSS bit is set, your program can
then act on the event in the appropriate fashion.
Standard event status
Event
Enable
Logic
*ESR? *ESE
n.u.
n.u.
QYE
DDE
EXE
CME
n.u.
PON
0
1
2
4
3
8
4 16
5 32
6
7 128
4
8
16
32
Service
Status request
Byte
enable
*STB? *SRE
Output
Queue
Data
Data
Data
OR
128
n.u.
n.u.
n.u.
n.u.
MAV
ESB
MSS
n.u.
0
1
2
3
4
5
6
7
16
32
64
16
32
64
Logic
OR
Figure 12-1: AC Source Status System Model
Figure 12-1 shows the status register structure of the AC source. The Standard Event, Status
Byte, and Service Request Enable registers and the Output Queue perform standard IEEE488 functions as defined in the IEEE 488.2 Standard Digital Interface for Programmable
Instrumentation.
12.1 Power-On Conditions
Refer to the *RST command description in paragraph 10.9.6 for the power-on conditions of
the status registers.
112
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TL Series
12.2 Standard Event Status Group
This group consists of an Event register and an Enable register that are programmed by
Common commands. The Standard Event register latches events relating to interface
communication status. It is a read-only register that is cleared when read. The Standard
Event Enable register functions similarly to the enable registers of the Operation and
Questionable status groups.
Command
*ESE
*ESR?
Action
programs specific bits in the Standard Event Enable register.
reads and clears the Standard Event register.
The PON bit in the Standard Event register is set whenever the AC source is turned on.
12.3 Status Byte Register
This register summarizes the information from all other status groups as defined in the IEEE
488.2 Standard Digital Interface for Programmable Instrumentation. The bit configuration is
shown in Table 10-6.
Command
*STB?
Action
reads the data in the register but does not clear it (returns MSS in bit 6)
The MSS Bit
This is a real-time (unlatched) summary of all Status Byte register bits that are enabled by
the Service Request Enable register. MSS is set whenever the AC source has one or more
reasons for needing service. *STB? reads the MSS in bit position 6 of the response but does
not clear any of the bits in the Status Byte register.
The MAV bit and Output Queue
The Output Queue is a first-in, first-out (FIFO) data register that stores AC source-tocontroller messages until the controller reads them. Whenever the queue holds one or more
bytes, it sets the MAV bit (bit 4) of the Status byte register.
12.4 Examples
The following section contains examples of commonly used operations involving the status
registers.
You can determine the reason for an MSS bit set by the following actions:
Step 1 : Determine which summary bits are active. Use:
*STB?
Step 2 : Read the corresponding Event register for each summary bit to determine which
events caused the summary bit to be set. Use:
ESR?
Note:
When an Event register is read, it is cleared. This also clears the
corresponding summary bit.
Step 3 : Remove the specific condition that caused the event. If this is not possible, the event
may be disabled by programming the corresponding bit of the status group Enable.
114
September 2006
TL Series
Appendix A: SCPI Command tree
Command Syntax Tree
Root
Level 1
CALibrate
Level 2
:STATe
:MEASure
Level 3
Level 4
:CURRent
[:FSCale]
:ZERO
[:FSCale]
:ZERO
[:FSCale]
:ZERO
[:FSCale]
:ZERO
:PCURrent
:POWer
:VOLTage
[:SOURce]:VOLTage
[SOURce]
:CURRent
:FREQuency
:VOLTage
[:LEVel]
:RANGe
:OUTPut
OUTPut
MEASurement
[:RELay]
:DROP
:STARt
[:STATe]
:PHASe
:CURRent?
:AMPLitude
:POWer
:CREStfactor
:RANGe
[:REAL]?
:APParent?
:PFACtor?
:VOLTage?
DISPlay
:MODE
SYSTem
:PON
:REMote
:LOCal
:KLOCk
:SAVE
LIMit
:CURRent
:VOLTage
:FREQuency
:LOW
:HIGH
:MAX?
:RESet
Appendix B: SCPI Conformance Information
SCPI Version
The TL Series AC power sources conform to SCPI version 1990.0.
116
March 2011
TL Series
Appendix C: Error Messages
Error Number
0
Error Message String
Error Causes
"No error"
-100
"Command error"
Generally the result of sending a
command that uses incorrect
syntax.
-200
"Execution error"
Generally the result of sending a
value that is out of range, i.e., a
VOLT 200 command when the
unit is in the 150 V (Low) range.
-300
"Device specific error"
Generally the result of an
overcurrent (current limit trip) or
over temperature condition.
-350
"Queue overflow"
Generally caused by too many
errors being generated without
reading error status, causing
error buffer to overflow.
-400
"Query error"
Generally caused by sending a
query followed by another
command without accepting the
query response first.
Table 12-1: Bus Error Messages
Index
A
External Input .................................................. 33
external oscillator input ..................................... 9
Acoustic ............................................................. 8
Altitude .............................................................. 8
F
B
bugs ................................................................. 61
C
CALibrate:MEASure:CURRent:ZERO .......... 84
CALibrate:MEASure:CURRent[
FSCale] ....................................................... 84
CALibrate:MEASure:PCURrent:ZERO ......... 85
CALibrate:MEASure:PCURrent[
FSCale] ....................................................... 84
CALibrate:MEASure:POWer:ZERO .............. 85
CALibrate:MEASure:POWer[
FSCale] ....................................................... 85
CALibrate:MEASure:VOLTage:ZERO .......... 85
CALibrate:MEASure:VOLTage[
FSCale] ....................................................... 85
CALibrate:STATe ........................................... 83
CALibrate[:SOURce]:VOLTage .................... 86
Calibration ....................................................... 42
CLS ............................................................... 103
command
subsystem .................................................... 82
commands
bus ............................................................... 82
common ....................................................... 77
comments ........................................................ 61
Connect ........................................................... 67
Construction
internal ........................................................... 7
Conventions .................................................... 75
Cooling .............................................................. 7
Current
Constant current mode ................................ 32
Constant Voltage ......................................... 32
CURRent ......................................................... 90
D
Dimensions........................................................ 7
DISPlay:MODE ................................................ 99
E
Emissions .......................................................... 8
ESE ............................................................... 103
ESR? ............................................................. 104
EXT ................................................................... 9
EXT option ..................................................... 23
-EXT Option..................................................... 33
118
March 2011
factory
default power on setting .............................. 31
Finish
paint............................................................... 7
form
End-user feedback ...................................... 61
formats
data ............................................................. 81
forms
bug report .................................................... 61
Frequency
specification .................................................. 4
FREQuency .................................................... 91
frequency range
2001RP-AV ................................................. 97
fixed ............................................................. 97
front panel ................................................. 23, 61
lock .............................................................. 24
Function Strobe .............................................. 33
Functional Test ............................................... 20
G
GPIB ............................................................... 63
address selection ........................................ 63
troubleshooting ............................................ 72
H
hard disk space
required to install ......................................... 67
header
optional ........................................................ 79
separator ..................................................... 79
Header ............................................................ 76
Humidity ............................................................ 8
I
IDN? .............................................................. 105
IEEE-488................................................... 40, 63
address selection ........................................ 63
troubleshooting ............................................ 72
Immunity ........................................................... 8
initialization
changing ...................................................... 31
Input power factor ............................................. 2
Inrush Current ................................................... 2
installation ................................................. 17, 67
program ....................................................... 67
Installing
software ....................................................... 67
TL Series
Insulation ........................................................... 8
Introduction ........................................................ 1
Isolation Voltage ................................................ 2
K
keyboard
lock out....................................................... 100
knob ................................................................. 26
L
LabView
RS232C terminator ...................................... 64
LED.................................................................. 55
LED indicators ................................................. 55
LIMit:CURRent? .............................................. 97
LIMit:FREQuency:HIGH? ................................ 97
LIMit:FREQuency:LOW? ................................. 97
LIMit:VOLTage? .............................................. 98
Line Current: ...................................................... 2
Line Frequency .................................................. 2
Line Voltage ....................................................... 2
M
maintenance .................................................... 55
Material
chassis ........................................................... 7
MEASure:CURRent:AMPLitdue:RESet ........... 88
MEASure:CURRent:AMPLitude:MAX? ........... 88
MEASure:CURRent:CREStfactor? .................. 88
MEASure:CURRent:RANGe ........................... 88
MEASure:CURRent? ....................................... 87
MEASure:POWer:APParent? .......................... 89
MEASure:POWer:PFACtor? ........................... 89
MEASure:POWer[
REAL]?......................................................... 89
MEASure:VOLTage[:AC]? ............................... 87
memory
required to install.......................................... 67
models
supported ..................................................... 61
O
OUTPut:DROP ................................................ 95
OUTPut:STARt:PHASe ................................... 96
OUTPut:STARt[:STATe].................................. 96
OUTPut[:RELay] .............................................. 94
Overcurrent........................................................ 7
overload ........................................................... 24
Overtemperature ............................................... 7
R
RCL ............................................................... 105
remote control ................................................. 24
Remote Inhibit ................................................. 33
replacement parts ........................................... 60
Requirements
PGUI32 ........................................................ 61
root .................................................................. 80
Root ................................................................ 76
RS232C .......................................................... 40
RST ............................................................... 106
S
Safety ................................................................ 8
SAV ............................................................... 107
SCPI ................................................................ 75
message ...................................................... 75
program message ....................................... 75
response message ...................................... 75
Separator ........................................................ 79
Setup
program ....................................................... 67
Shock ................................................................ 8
Short Circuit
current ........................................................... 7
shuttle ............................................................. 26
simulation mode .............................................. 63
software registration........................................ 74
SOURce:CURRent ......................................... 90
SOURce:FREQuency ..................................... 91
SOURce:VOLTage ......................................... 91
SOURce:VOLTage:RANGe:AUTO ................. 93
SOURce:VOLTage:RANGe[:LEVel] ............... 92
SRE ............................................................... 107
status .............................................................. 24
STB? ............................................................. 108
suggestions ..................................................... 61
SYSTem:ERRor? .......................................... 100
SYSTem:KLOCk ........................................... 100
SYSTem:LOCal ............................................ 100
SYSTem:PON ............................................... 101
SYSTem:REMote.......................................... 101
SYSTem:SAVE ............................................. 101
T
PGUI32 ............................................................ 61
Temperature
operating,storage .......................................... 8
terminator ........................................................ 80
RS232C ....................................................... 64
Transients
Input .............................................................. 7
troubleshooting ............................................... 55
Q
V
queries ............................................................. 78
Vibration ............................................................ 8
Voltage
P
specification ................................................... 2
VOLTage ......................................................... 91
voltage range
dual .............................................................. 98
single ........................................................... 98
voltage ranges ................................................. 19
VOLTage:RANGe:AUTO ................................ 93
120
March 2011
VOLTage:RANGe[:LEVel] .............................. 92
W
Weight............................................................... 7
wiring
input............................................................. 17
TL Series
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