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. 7004-980 Rev. N
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
AC Power Source, User Manual
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.
Hazardous voltages may be present when covers are removed. Qualified
personnel must use extreme caution when servicing this equipment.
Circuit boards, test points, and output voltages also may be floating above
(below) chassis ground.
WARNING
The equipment used contains ESD sensitive ports. When installing
equipment, follow ESD Safety Procedures. Electrostatic discharges might
cause damage to the equipment.
Important Safety Instructions
Before applying power to the system, verify that your product is configured properly for your
particular application.
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: Lx\Ls Series II
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
User Manual Lx / Ls Series II
Refers to:
Lx Series AC Power Source/Analyzers - Series II
Ls Series AC Power Sources - Series II
7. Service ........................................................................................................................................ 117
7.2 General .......................................................................................................................................... 117
8.1 General .......................................................................................................................................... 124
9. Option –160: RTCA/DO-160 Rev E Tests (Software) ................................................................. 139
10. Option -704: MIL-STD 704 Rev D through F (MIL704 Mode) ..................................................... 140
10.1 General .......................................................................................................................................... 140
10.3 Test Revision ................................................................................................................................. 140
10.4 Tests Performed ............................................................................................................................ 141
10.5 Front Panel Operation MIL704 ...................................................................................................... 142
10.6 Steady State Tests ........................................................................................................................ 143
10.7 Emergency Test ............................................................................................................................ 146
10.8 Abnormal Test ............................................................................................................................... 147
11. Option –704F: MIL-STD 704 Rev A through F (MS704 mode) ................................................... 149
11.1 General .......................................................................................................................................... 149
11.3 Test Revision ................................................................................................................................. 149
11.4 Power Group Reference ................................................................................................................ 150
11.5 Available Tests .............................................................................................................................. 150
11.6 Front Panel Operation MS704 ....................................................................................................... 152
11.7 Test Steps and Execution Times Summary ................................................................................... 155
11.8 MS704 Operation Using the LxGui Software ................................................................................. 202
12. Option –ABD: Airbus ABD0100.1.8 Test (Software) ................................................................... 210
13. Option –A350: Airbus A350, ABD0100.1.8 Test (Software) ....................................................... 211
14. Option –AMD: Airbus AMD24 Test (Software)............................................................................ 212
15. Option –B787: Boeing 787B3-0147 Test (Software) ................................................................... 213
17. Index ........................................................................................................................................... 220
7
User Manual Lx / Ls Series II
List of Figures
Figure 2-1: 3000Lx Voltage / Current Rating Chart for 150V AC Range in 3 phase mode. ................................ 18
Figure 2-2: 4500Lx Voltage / Current Rating Chart for 150V AC Range in 3 phase mode. ................................ 19
Figure 2-3: 6000Lx Voltage / Current Rating Chart for 150V AC Range in 3 phase mode. ................................ 19
Figure 2-4: 3000Ls Voltage / Current Rating Chart for 135V AC Range in 3 phase mode. ................................ 20
Figure 2-5: 4500Ls Voltage / Current Rating Chart for 135V AC Range in 3 phase mode. ................................ 20
Figure 2-6: 6000Ls Voltage / Current Rating Chart for 135V AC Range in 3 phase mode. ................................ 21
Figure 2-7: Voltage / Frequency Rating. ............................................................................................................. 21
Figure 4-4: PROGRAM Menu ............................................................................................................................. 75
Figure 4-5: CONTROL Menus ............................................................................................................................ 76
Figure 6-1: Location of Gain pot adjustments and TP1 through TP4 ................................................................ 112
Figure 8-1: Application Menu ............................................................................................................................ 125
Figure 8-2: DO160 Main Menus ........................................................................................................................ 125
Figure 8-3: Normal state screens ...................................................................................................................... 126
Figure 8-4: Voltage Modulation - Frequency characteristics ............................................................................. 129
Figure 8-5: Frequency Modulation .................................................................................................................... 130
Figure 8-6: Power Interrupt ............................................................................................................................... 131
Figure 8-7: Power Interrupt for Group2/A(NF) and Group3/A(WF) ................................................................... 132
Figure 10-1: Applications Menu ........................................................................................................................ 142
Figure 10-2: MIL704 Menu ................................................................................................................................ 142
Figure 10-3: Steady State Menu ....................................................................................................................... 143
Figure 11-4: Revision/Group Menu ................................................................................................................... 153
Figure 11-5: Test selection Menu ..................................................................................................................... 153
Figure 11-6: Section and Test Condition .......................................................................................................... 154
Figure 11-7:Steady State frequency ................................................................................................................. 154
Figure 11-8: Required SAC-106 Test Setup. .................................................................................................... 157
Figure 11-9: Required TAC-106 Test Setup. .................................................................................................... 170
Figure 11-10: Required SVF-106 Test Setup.................................................................................................... 183
Figure 11-11: Required TVF-106 Test Setup. ................................................................................................... 191
Figure 11-12: Required SXF-106 Test Setup. ................................................................................................... 198
Table 3-9: USB Connector pin out....................................................................................................................... 55
Table 3-10: RJ45 LAN Connector pin out............................................................................................................ 56
Table 3-11: Full Load Resistance – Lx Series ..................................................................................................... 58
Table 3-12: Full Load Resistance – Ls Series ..................................................................................................... 58
Table 4-1: Menu Tree .......................................................................................................................................... 74
Table 4-2: Sample Transient List ...................................................................................................................... 101
Table 4-3: Factory Default Power on Settings ................................................................................................... 103
Table 7-2: Replaceable Parts and Assemblies ................................................................................................. 123
Table 8-1: Normal Voltage and Frequency minimum ........................................................................................ 127
Table 8-2: Normal Voltage and Frequency Maximum ....................................................................................... 127
Table 8-3: Normal Voltage Unbalance .............................................................................................................. 128
Table 8-4: Airbus mode voltage modulation. ..................................................................................................... 128
Table 8-5: Normal VoltageSurge Sequence ...................................................................................................... 132
Table 8-6: Normal Frequency Transient Sequence ........................................................................................... 133
Table 8-7: Normal Frequency Variation Sequence ........................................................................................... 133
Table 8-8: Emergency Voltage and Frequency Minimum ................................................................................. 134
Table 8-9: Emergency Voltage and Frequency Maximum................................................................................. 134
Table 8-10: Emergency Voltage Unbalance ...................................................................................................... 135
Table 8-11: Abnormal Voltage Minimum ........................................................................................................... 136
Table 8-12: Abnormal Voltage Maximum .......................................................................................................... 136
Table 8-13: Abnormal Voltage Unbalance ........................................................................................................ 137
Table 8-14: Abnormal Frequency Transient ...................................................................................................... 138
Table 10-1: Steady state voltage ....................................................................................................................... 143
Table 10-2: Steady state frequency................................................................................................................... 144
Table 10-3: Frequency Modulation ................................................................ ................................ .................... 144
Table 10-4: Abnormal Over Frequency ............................................................................................................. 148
Table 10-5: Abnormal Under Frequency ........................................................................................................... 148
Table 11-1: DO160 Test Groups ....................................................................................................................... 150
Table 11-2: Test Selections ............................................................................................................................... 153
Table 11-3: Steady state frequency................................................................................................................... 154
This instruction manual (P/N 7004-980) contains information on the installation, operation,
calibration and maintenance of the Lx Series II and Ls Series II AC power sources. The Series II
versions of the Lx and Ls Series are backward compatible with the Series I models. The User
Manual for Series I models is CI P/N 7004-960 and is available for download at
www.programmablepower.com.
Series II models are different from the original Lx/Ls Series in the following areas:
Standard USB interface has been added.
Optional Ethernet LAN interface has been added. (Option –LAN).
The front panel graphic design has been enhanced for a more pleasing look.
The Output D and E terminal block is no longer installed on the standard Lx and Ls units
unless the auxiliary output option –AX is installed. This makes the standard output
terminal block more easily accessible.
No other functional differences exist between the Series I and Series II AC power sources. The
RS232C interface is still available in addition to the USB interface.
1.1 General Description
The Lx Series of AC Power Source is a family of high efficiency, rack mountable, AC Power
Source/Analyzer combinations that provide a precise output with low distortion and advanced
measurements. Standard output voltage ranges are 150 Vac and 300 Vac RMS. The Lx Series
can operate in either single or three-phase mode.
The Ls Series of AC Power Source is a family of high efficiency, rack mountable, AC Power
Sources that provide a precise output with low distortion. Standard output voltage ranges are
135 Vac and 270 Vac RMS. The Ls Series is available in either single (-1) or three-phase mode
(3). A –MODE option is available on –3 Ls models.
For power levels above 4500 VA, two or more Lx or Ls series units can be combined using the
system interface in a parallel mode of operation. These multi chassis systems consist of one
master unit with controller and one or two auxiliary units without controllers. Only the master unit
has a front panel keyboard and display.
Read the installation instructions carefully before attempting to install and operate the Lx / Ls
Series power systems.
10
User Manual Lx / Ls Series II
1.2 Lx Series and Ls Series Differences
The Lx Series and Ls Series of AC power sources are both based on the same AC power source
hardware platform and share many common components. The differences are primarily in
configuration and options. This manual covers both models for Series II. Some menus and
screen shown in this manual may not apply to Ls Series AC sources without the –ADV option
and / or –MODE option. See section 1 for difference between Series I and Series II models. This
manual is provided for Series II models.
1.2.1 Firmware differences
The Lx Series is fully featured and supports all commands listed in the programming manual.
The Ls Series provides most basic functions in its standard configurations. More advanced
features can be added by specifying the –ADV (advanced) option. If the –ADV option is installed,
all commands listed in this programming manual are supported. If not, commands related to
arbitrary waveforms and harmonic analysis measurements are not supported and will generate a
“-113 Syntax Error” message.
1.2.2 Hardware differences
In addition to the firmware differences described, the following hardware differences exist
between the standard Lx Ac source and the Ls AC source.
Lx has a 150V / 300 V rms output range pair. Optional ranges of 135/270 (-HV option)
and 200/400 (-EHV option) are available at time of order.
Ls has a 135 V / 270 V rms output range pair. Optional ranges of 156/312 (-HV option)
and 200/400 (-EHV option) are available at time of order.
The Lx rear panel connector labeling is compliant with the California Instruments iL
Series which it replaces and the HP/Agilent model 6834B.
The Ls rear panel connector labeling is compliant with the California Instruments L
Series.
The Lx Series II comes standard with GPIB, USB and RS232C interfaces. An optional
LAN interface (-LAN) is available.
The Ls Series II comes standard with USB and RS232C, An optional GPIB interface (-
GPIB option) and LAN interface (-LAN) is available.
Note: All interfaces use the SCPI command syntax as described in the programming
manual.
The Lx Series provides both three phase and single-phase output modes, which can be
selected from the front panel or over the bus.
The Ls Series provides either three phase (-3 models) or single phase (-1 models).
Three-phase Ls Series sources may optionally be equipped with the –MODE option,
which provides the same phase mode switching as the Lx Series.
The Lx Series ships with a more advanced keyboard (P/N 6005-702-1), which includes a
numeric data entry pad. This same keyboard is available as an option on the Ls Series
(Option –KP). Customers that prefer the simplified keyboard with dual shuttles (P/N
7004-709-1) can order this on the Lx Series as option –RP.
11
User Manual Lx / Ls Series II
1.3 Manual organization and format
All user documentation for California Instruments power sources is provided on CDROM in
electronic format. (Adobe Portable Document Format) The required Adobe PDF viewer is
supplied on the same CDROM. This manual may be printed for personal use if a hardcopy is
desired. To request a hardcopy from AMETEK programmable power, contact customer service
at service@programmablepower.com. There will be an additional charge for printed manuals.
This manual contains sections on installation, normal use, maintenance and calibration. The Lx
Series II is equipped with GPIB, USB and RS232C interfaces. The Ls Series II is equipped with
USB and RS232C interfaces. An optional GPIB and/or LAN interface can be specified at the time
of order. Refer to the Lx / Ls Series Programming manual for information on using the remote
control interface and command syntax. The programming manual (P/N 7004-981) is provided on
the same CDROM as this user manual.
AMETEK may make updated versions of this manual available from time to time in electronic
format through it‟s website. To obtain an updated manual revision if available, check the
AMETEK Programmable Power website Manual download page at
Note: Each Lx/ Ls chassis requires
its own AC service.
Note: 3000Lx/Ls may be operated
from 208-230 V L-N single phase
AC input between L2 and L3 on
TB3 for3000Lx or ØB- ØC on TB3
for 3000Ls.
Line VA:
(total)
3000Lx / Ls 5900 VA / 4100 W
4500Lx / Ls 8900 VA / 5900 W(x2 for 9000Lx/2, x3 for 13500Lx/3)
6000Lx / Ls 11900 VA / 7900 W (x2 for 12000Lx/2, x3 for 18000Lx/3
Line Current:
(per phase)
3000Lx / Ls Std: 19 Arms @ 187 VLL, 3 phase AC input.
[32 Arms @ 187 VLN single phase AC input. Connect
between TB3 L2-L3 on 3000Lx or TB3 ØB- ØC on
3000Ls]
-400: 10 Arms @ 360 VLL, 3 phase AC input.
4500Lx / Ls Std: 31 Arms @ 187 VLL
-400: 16 Arms @ 360 VLL
-480: 13 Arms @ 456 VLL
6000Lx / Ls Std: 38 Arms @ 208 VLL
Currents shown are for single chassis models. For multi-chassis
configurations, currents are per chassis.
2. Specifications
Specifications shown are valid over an ambient temperature range of 25 5 C and apply after a
30 minute warm-up time. Unless otherwise noted, all specifications are per phase for sine wave
output into a resistive load. For three phase configurations or mode of operation, all
specifications are for Line to Neutral (L-N) and phase angle specifications are valid under
balanced load conditions only.
Specifications for Ls models are identical to those for the Lx except where noted.
2.1 Electrical
2.1.1 Input
1
Note that operation below 208V L-L AC input is available with the following derating considerations:
1) If operating at less than a 5000 VA output power there will be no affect on the output.
2) If operating in 3-phase mode, with a full-scale output voltage and a frequency less than three times the line
frequency, the voltage distortion may exceed specification between 5500 and 6000 VA output.
3) If operating in 1-phase mode above 5000 VA, above 85% of full-scale output voltage and an output frequency
less than three times the line frequency, the voltage distortion may exceed specification and the output may fault
with a crest factor load more than 2.
In most applications, these conditions are not likely to exits. At AC input voltages of 208 V or higher, the 6000Lx/Ls
meets specifications under all conditions.
13
User Manual Lx / Ls Series II
Parameter
Specification
Line Frequency:
47-440 Hz
Efficiency:
75 % (typical) depending on line and load
Power Factor:
0.65 (typical)
Inrush Current:
50 Apk @ 253VLL per chassis
83 Apk @ 400 V
LL
per chassis
Note: Each Lx chassis requires
its own AC service.
Hold-Up Time:
> 10 ms
Isolation
Voltage:
1350 VAC input to chassis / input to output (208 V input models)
1900 VDC input to chassis / input to output (208 V input models)
2200 VAC input to chassis / input to output (400 V input models)
3100 VDC input to chassis / input to output (400 V input models)
With –HF and –LKM option:
< 2 % [45 - 1000 Hz]
< 2 % + 1%/kHz [> 1000 Hz]
(harmonics and noise to 300 kHz)
Load Regulation:
ALC mode ON
0.1 % FS
External Sense
Up to 10% of programmed value can be dropped across each load lead Fout
< 400 Hz. Up 2.5% of programmed value can be dropped across each load
lead Fout > 400 Hz. Internal or External sense selectable.
Line Regulation:
0.02% for 10% input line change
Stability:
± 0.05% FS, 24 hours, constant line, load and temperature, ALC on.
Temp Coefficient:
± 0.05 V/°C
DC Offset Voltage:
0.0 V
Output Noise:
(20 kHz to 1 MHz)
< 100 mV
RMS typical
Output Coupling
Transformer coupled
Output Impedance
(Z)
Z = Vrange * 0.001 / I_load
Power – Lx Series (total power for all phases, either range, at full scale voltage)
35° C Ambient
50° C Ambient
Model
3000Lx
4500Lx
6000Lx
3000Lx
4500Lx
6000Lx
Single Phase Mode
3 KVA
4.5 KVA
5.76 KVA
3 KVA
4 KVA
5 KVA
Three Phase Mode (per
phase)
1 KVA
1.5 KVA
1.9 KVA
1 KVA
1.35 KVA
1.7 KVA
Model
9000Lx/2
12000Lx/2
9000Lx/2
12000Lx/2
Single Phase Mode
9 KVA
11.5 KVA
8 KVA
10 KVA
Three Phase Mode (per
3 KVA
3.8 KVA
2.7 KVA
3.3 KVA
2.1.2 Output
1
The distortion specification for the Lx Series applies at full-scale voltage, full resistive load conditions.
15
User Manual Lx / Ls Series II
Output Parameter
Specification
phase)
Model
13500Lx/3
18000Lx/3
13500Lx/3
18000Lx/3
Single Phase Mode
13.5 KVA
5.76 KVA
12 KVA
15 KVA
Three Phase Mode (per
phase)
4.5 KVA
17.3 KVA
4 KVA
5 KVA
Power – Ls Series (total power for all phases, either range, at full scale voltage)
35° C Ambient
50° C Ambient
Model
3000Ls
4500Ls
6000Ls
3000Ls
4500Ls
6000Ls
Single Phase Mode
3 KVA
4.5 KVA
6 KVA
3 KVA
4 KVA
5 KVA
Three Phase Mode (per
phase)
1 KVA
1.5 KVA
2 KVA
1 KVA
1.35 KVA
1.7 KVA
Model
9000Ls/2
12000Ls/2
9000Ls/2
12000Ls/2
Single Phase Mode
9 KVA
12 KVA
8 KVA
10 KVA
Three Phase Mode (per
phase)
3 KVA
4 KVA
2.7 KVA
3.3 KVA
Model
13500Ls/3
18000Ls/3
13500Ls/3
18000Ls/3
Single Phase Mode
13.5 KVA
6 KVA
12 KVA
15 KVA
Three Phase Mode (per
phase)
4.5 KVA
18 KVA
4 KVA
5 KVA
Maximum Current at Full Power – Lx Series
Note: Current, maximum amps per phase available at on low voltage range. 3000Lx and 4500Lx
operate in constant power mode up to currents shown at reduced voltage. See Figure 2-1.
For 9000Lx/2 and 12000Lx/2, currents are 2 x 4500Lx and 6000Lx.
For 13500Lx/3 and 18000Lx/3, currents are 3 x 4500Lx and 6000Lx
Model
3000Lx
4500Lx
6000Lx
Single Phase Mode:
Max. RMS, low Vrange
38.4 A
38.4 A
38.4 A
Three Phase Mode:
Max. RMS, low Vrange
per phase
12.8 A
12.8 A
12.8 A
Note: Current derates linearly from 50% of voltage range to 20% of specified current at 10% of
voltage range.
Current in High voltage range is reduced by a factor of 2.
Note: For 9000Lx/2 and 12000Lx/2, currents are 2 x 4500Lx and 6000Lx.
For 13500Lx/3 and 18000Lx/3, currents are 3 x 4500Lx and 6000Lx
Maximum Current at Full Power – Ls Series
Note: Current, maximum amps per phase available at on low voltage range. 3000Ls and 4500Ls
operate in constant power mode up to currents shown at reduced voltage. See Figure 2-1.
For 9000Ls/2 and 12000Ls/2, currents are 2 x 4500Ls and 6000Ls.
For 13500Ls/3 and 18000Ls/3, currents are 3 x 4500Ls and 6000Ls
Model
3000Ls
4500Ls
6000Ls
Single Phase Mode:
Max. RMS, low Vrange
44.4 A
44.4 A
44.4 A
16
User Manual Lx / Ls Series II
Output Parameter
Specification
Three Phase Mode:
Max. RMS, low Vrange
per phase
14.8 A
14.8 A
14.8 A
Note: Current derates linearly from 50% of voltage range to 20% of specified current at 10% of
voltage range.
Current in High voltage range is reduced by a factor of 2.
Note: For 9000Ls/2 and 12000Ls/2, currents are 2 x 4500Ls and 6000Ls.
For 13500Ls/3 and 18000Ls/3, currents are 3 x 4500Ls and 6000Ls
Maximum Current at Full Scale Voltage – Lx Series
Model
3000Lx
4500Lx
6000Lx
Single Phase Mode:
Max. RMS, low Vrange
20 A
30 A
38.4 A
Three Phase Mode:
Max. RMS, low Vrange
per phase
6.67 A
10 A
12.8 A
Current Limit mode
Programmable, CC or CV mode
Maximum Current at Full Scale Voltage – Ls Series
Model
3000Ls
4500Ls
6000Ls
Single Phase Mode:
Max. RMS, low Vrange
22.2 A
33.3 A
44.4 A
Three Phase Mode:
Max. RMS, low Vrange
per phase
7.4 A
11.1 A
14.8 A
Current Limit mode
Programmable, CC or CV mode
Repetitive Peak Current
Model
3000Lx / Ls
4500Lx / Ls
6000Lx / Ls
Max. Peak Current:
6 x RMS current at FS
4 x RMS current at FS
3 x RMS current at FS
Note: For 9000Lx / Ls /2 and 12000Lx / Ls /2, currents are 2 x 4500Lx/Ls and 6000Lx/Ls.
For 13500Lx / Ls/3 and 18000Lx / Ls /3, currents are 3 x 4500Lx/Ls and 6000Lx/Ls
Frequency
Range:
45 Hz - 1000 Hz
Supplemental
Operation from 17 to 45 Hz is available at reduced output voltage.
Vout max = 100 % * F /45 for F < 45Hz. See chart Figure 2-7 for
Voltage/Frequency rating.
Resolution1:
0.01 Hz [< 81.91 Hz]
0.1 Hz [> 82.0 to 819.1 Hz]
1 Hz2 [> 819 Hz]
Accuracy:
± 0.025 %
Temp. Coefficient
± 5 ppm of value / °C
Stability:
± 15 ppm of value
1
Programming resolution reduced if –LKM/-LKS option is installed. See paragraphs 2.6.5 and 2.7.5.
2
Programming resolution of 0.5 Hz above 819.1 Hz may be used over the remote control bus with ± 0.5 Hz
Note: All output specifications apply below the Current / Voltage rating line shown in the
V/I rating charts of section 2.1.2.1 for Lx Series and section 2.1.2.2 for Ls Series.
Data is shown for 3-phase mode, low voltage range. For 1-phase mode, multiply
current by 3. For high voltage range, divide current by 2 and multiply voltage by 2.
2.1.2.1 Voltage versus Current Rating Charts - Lx Series
18
Figure 2-1: 3000Lx Voltage / Current Rating Chart for 150V AC Range in 3 phase mode.
User Manual Lx / Ls Series II
Current
(RMS)
Voltage (RMS)
75117
100%
60%
80%
40%
20%
150
150 V Range
Full
Power
12.8 A
15
Current
(RMS)
Voltage (RMS)
75117
100%
60%
80%
40%
20%
150
150 V Range
12.8 A
15
Figure 2-2: 4500Lx Voltage / Current Rating Chart for 150V AC Range in 3 phase mode.
Figure 2-3: 6000Lx Voltage / Current Rating Chart for 150V AC Range in 3 phase mode.
19
User Manual Lx / Ls Series II
Current
(RMS)
Voltage (RMS)
67.5
100%
60%
80%
40%
20%
135
135 V Range
Full
Power
14.8 A
13.5
Current
(RMS)
Voltage (RMS)
67.5
100%
60%
80%
40%
20%
135
135 V Range
Full
Power
14.8 A
13.5100
2.1.2.2 Voltage versus Current Rating Charts - Ls Series
Figure 2-4: 3000Ls Voltage / Current Rating Chart for 135V AC Range in 3 phase mode.
Figure 2-5: 4500Ls Voltage / Current Rating Chart for 135V AC Range in 3 phase mode.
20
User Manual Lx / Ls Series II
Current
(RMS)
Voltage (RMS)
67.5
100%
60%
80%
40%
20%
135
135 V Range
14.8 A
13.5
100%
38%
50%
Vout max.
in % FS
17 Hz45 HzMax.
Frequency
Figure 2-6: 6000Ls Voltage / Current Rating Chart for 135V AC Range in 3 phase mode.
2.1.2.3 Frequency versus Voltage Rating Chart
21
Figure 2-7: Voltage / Frequency Rating.
User Manual Lx / Ls Series II
Parameter
Range
Accuracy ( )
Resolution
1 Phase Mode
3 Phase Mode
Frequency1
45.00-1000.0 Hz
0.1% ± 1 digit
0.01 Hz to 81.91 Hz
0.1 Hz to 819.1 Hz
1 Hz > 819.1 Hz
Phase
45.00 - 100.0 Hz
100.0 - 1000 Hz
0.5°
2°
0. 1°
RMS Voltage
0 - 400 Volts
0.05% + 0.25V
0.01 Volt
RMS Current
0 - 50 Amps
0.1% + 0.15A
0.1% + 0.05A
0.001 Amp
Peak Current
0 - 150 Amps
0.2% + 0. 5A
0.1% + 0.15A
0.001 Amp
Crest Factor
1.00 – 10.00
1.5 %
1.5 %
0.01
VA Power
0 - 6 KVA
0.15% + 9 VA
0.15% + 3 VA
1 VA
Real Power
0 - 6 KW
0.15% + 9 W
0.15% + 3 W
1 W
Power Factor
0.00 - 1.00
0.03
0.01
0.01
Note: Accuracy specifications are valid above 100 counts. For multi-chassis configurations, Current
and Power range and accuracy specifications are times the number of chassis.
Note: Frequency measurement specification valid for output > 20 Vrms.
Note: Crest Factor accuracy applies for Irms > 50% of max.
Note: Power Factor accuracy applies for PF > 0.5 and VA > 50% of max.
Parameter
Range
Accuracy ( )
Resolution
Frequency fundamental
45.00 - 81.91 Hz
82.0 - 819.1 Hz
> 819.1 Hz
0.1% ± 1 digit
0.01 Hz
0.1 Hz
1 Hz
Frequency harmonics
45.00 Hz – 16 kHz
0.1% + 2 digits
0.1 Hz
Voltage
Fundamental
0 - 400 Volts
0.05% + 0.25V
0.01V
Harmonic 2 - 50
0.1% + 0.1%/kHz + 0.25
0.01V
Current
Fundamental
0 - 20 Amps
0.1% + 0.05A
0.01A
Harmonic 2 - 50
0.1% + 0.1%/kHz + 0.05A
0.01A
Note: Current range and accuracy specifications are times three in single-phase mode. For multichassis configurations, current accuracy specifications are times the number of chassis. The
harmonic measurement bandwith increases to 48Khz in single-phase mode.
2.1.3 AC Measurements
Measurement specifications apply to single chassis Lx / Ls Series AC source in single or threephase mode. See notes for other models and configurations.
2.1.4 Harmonic Measurements
Harmonic measurement specifications apply to Lx Series or Ls Series –3 with –ADV option AC
sources in three-phase mode. See notes for single-phase mode or Ls –1 with –ADV option.
1
Frequency measurement specifications valid with output voltage of 30Vrms or higher. If output relay is open,
frequency measurement will return 0.0 Hz.
22
User Manual Lx / Ls Series II
Parameter
Specification
Trigger Input:
External trigger source input. Requires TTL level input signal. Triggers
on negative edge. Response time 80 - 100 s.
Non volatile memory
storage:
16 complete instrument setups and transient lists, 100 events per list.
50 User defined waveforms.
Waveforms
Lx Series: Sine, square, clipped, user defined
Ls Series standard: Sine, square, clipped
Ls Series w –ADV option: Sine, square, clipped, user defined
Transients
Voltage: drop, step, sag, surge, sweep
Frequency: step, sag, surge, sweep
Voltage and Frequency: step, sweep
Current Limit Modes:
Two selectable modes of operation:
1. Constant current mode (voltage folds back with automatic recovery)
2. Constant voltage mode with trip-off (Relays open).
Interfaces
IEEE-488
(Requires –GPIB option
on Ls Series)
AH1, DC1, DT1, L3, RL2, SH1, SR1, T6
IEEE 488.2 and SCPI
Response time is 10 ms (typical)
LAN / Ethernet
(-LAN Option)
RJ45 Connector, 10BaseT, 100BaseT or 1000BaseT,
Data transfer rate: 460,800 bps
Protocol: TCP/IP.
Note: If –LAN is installed, RS232C interface is disabled.
RS232C
Baud rates, 9600, 19200, 38400, 57600 and 115200
Data bits: 8, Start bits: 1, Stop bits: 1, Parity: None
Syntax: SCPI
Response time is 10 ms (typical @ 115200 baud)
USB
Standard USB 2.0 peripheral.
Data transfer rate: 460,800 bps
Syntax: SCPI
Note: Use of the USB port to control more than one power
source from a single PC is not recommended, as communication
may not be reliable. Use GPIB interface for multiple power source
control.
Parameter
Specification
Input Over current:
Input Circuit breaker. This breaker protects the equipment only and is
not a branch protection device. AC input connection should be make
using a suitable branch protection device per local electrical code.
Input Over voltage
Transients:
Surge protection to withstand EN50082-1 (IEC 801-4, 5) levels.
Output Over current:
Adjustable level constant current mode with programmable set point.
All dimensions are per chassis. For /2 or /3 model configurations,
multiply height by 2 or 3 for total height. Width includes integrated front
panel rack mount ears.
All weights are per chassis. For /2 or /3 model configurations, each
chassis is packaged individually.
Material:
Steel chassis with aluminum top cover
Finish:
Anodized external surfaces.
Front panel color medium gray.
Cooling:
Fan cooled with air intake on the sides and exhaust to the rear.
Variable speed fan control.
Acoustic Noise
(Supplemental
specification)
Measured at 1 m distance:
Fan speed: Low power mode Full power mode
Front of unit: 47 dBA 50 dBA
Rear of unit: 62 dBA 67 dBA
Internal Construction:
Modular sub assemblies.
Rear Panel
Connections:
(See section 3 for description of connections)
AC input wiring
AC output wiring
External sense terminal block (Remote voltage sense)
System interface (2x)
GPIB (std Lx, option on Ls), USB, LAN (option) and RS232C
Trigger In and Out SMA's (Master Lx chassis only)
Parameter
Specification
Operating Temp:
0° to +35 C, full power, 0° to +50 C, reduced power
+32° to +95° F, full power, +32° to +122 F, reduced power.
Storage Temp:
-40° to +85 C.
-40° to +185° F.
Altitude:
< 2000 meters
< 6000 feet
2.2 Mechanical
2.3 Environmental
25
User Manual Lx / Ls Series II
Parameter
Specification
Relative Humidity:
0-95 % RAH, non-condensing maximum for temperatures up to 31 C
decreasing linearly to 50% at 40 C.
Indoor Use Only
Vibration:
Designed to meet NSTA project 1A transportation levels.
Shock:
Designed to meet NSTA project 1A transportation levels.
Controls:
Shuttle knobs:
Voltage and Frequency shuttle knobs may be used to adjust voltage and
frequency for selected phase or all three phases while in the SET menu.
In all other menu's, the shuttles may be used to change parameter
values and settings.
Up/down arrow keys:
A set of up and down arrow keys is used to move the cursor position in
all menus. This allows quick selection of the desired function or
parameter.
Function keys:
Set key will show output voltage and frequency setting.
Meas key displays the measurement screens. Measure key will display
measurement values for selected phase or phase A if all three phases
are selected.
Menu key selects main menu.
Enter key is used to confirm selections.
Back key is used to back up to previous screen.
Output on/off key for output relay control.
Phase key toggles between phase A, B, C or all phases selection.
Displays:
LCD graphics display:
Large high contrast backlit LCD display. An adjustable viewing angle
makes it easy to read from all practical locations.
Status indicators:
Large and bright status indicators inform the user of important power
source conditions.
The Remote lamp informs the user that the unit is under remote control.
The Overload lamp indicates that excessive current is being drawn at
the output.
The Over temperature lamp illuminates when internal heat sink
temperatures are too high.
The Hi Range indicator is lit any time the unit is switched to the high
voltage range.
The Output On/Off indicator is on when the power source output relays
are closed.
The Phase A, B and C indicators are lit when the relevant phase is
selected with the Phase key.
Controller Features
2.4 Front Panel Controls
2.5 Special Features
26
User Manual Lx / Ls Series II
Mode:
Switches between 1 and 3 phase outputs.
Parallel Operation:
9000Lx/2 and 13500Lx/2 systems use two or three 4500Lx chassis in
parallel operation. The two or three chassis must be connected using the
system interface cable supplied with the system.
12000Lx/3 and 18000Lx/3 systems use two or three 6000Lx chassis in
parallel operation. The two or three chassis must be connected using the
system interface cable supplied with the system
Controller:
Programmable controller front panel assembly.
Output Relay:
Standard output relay feature to isolate power source from the load.
Output On/Off:
The output relay can be used to quickly disconnect the load. A yellow
status indicator displays the status of the output relay.
External Trigger Output
or Function Strobe
An external TTL output is available which may be used to trigger other
equipment. The TTL output can be controlled by the transient
programming system. This requires the trigger mode to be set to EXT
(factory default). This can only be done over the bus using the
OUTP:TTLT:MODE TRIG command. This mode is compatible with the
Agilent HP6834B.
It can also be configured to generate an output pulse any time the
voltage, frequency, current limit or phase programming is updated. This
requires the trigger mode to be set to FSTR. This can only be done over
the bus using the OUTP:TTLT:MODE FSTR command. This mode is
compatible with the CI L Series.
The Trigger Output (Trig Out1) / function strobe is an active low1 TTL
signal with a duration of no less than 400 usec.
Clock and Lock Mode
Enables two or more independent Ls/Lx power systems to be phase
synchronized to each other. One system (-LKM) acts as the master, the
other(s) (-LKS) as auxiliaries. The –LKS units are synced to the –LKM
unit. Refer to section 3.9 for details on Clock and Lock mode.
Trigger Input
A TTL input signal may be used as an external trigger source for output
changes programmed on the AC power source transient system. This
requires the trigger source to be set to EXT. This can only be done over
the bus.
1 Note: Early production models may have an active high Trig Out1 polarity.
27
User Manual Lx / Ls Series II
Output Options
-AX
Auxiliary outputs, 5 VAC and 26 VAC, 400 Hz. (Output D and E)
- HV
135 / 270 V range output
- EHV
200 / 400 V range output
-HF
High frequency option. Increases output frequency to 5000 Hz (single
chassis configurations) or 2000 Hz (multi-chassis models).
-LF
Low frequency option. Limits maximum output frequency to 500 Hz.
Firmware Options
- 160
RTCA/DO-160D test firmware.
Includes RCTA-DO160D, section 16, Change #2 and EURO/CAE-14D
AC tests only.
- 704
Mil Std 704 test firmware – MIL704
Includes AC tests for Revisions D and E
- 704F
Mil Std 704 test firmware – MS704
Includes AC tests for Revisions A through F
-ABD
Airbus ABD0100.1.8 Tests. – ABD
Includes tables A, B and C.
This option can only be used with the provided LxGui Windows software.
-AMD
Airbus AMD234 Tests. – AMD
This option can only be used with the provided LxGui Windows software.
-B787
Boeing 787B3-0147 Tests. – B787
This option can only be used with the provided LxGui Windows software.
Misc. Options
-EXS
External Sync (see Notes)
-L22
Locking Knobs. Shaft lock screws replace knobs to prevent turning of
Voltage and Frequency shuttles.
-LAN
Ethernet LAN interface connection. RJ45 connector.
Note: When installed, RS232C interface is disabled.
-LKM
Clock and Lock Master. Enables synchronizing outputs of two Lx AC
sources, one acts as master.
This mode supports a frequency range of 45 to 819 Hz on standard
Lx/Ls models. See section 3.9.
-LKS
Clock and Lock Auxiliary. See -LKM for details. (see Notes) See section
3.9.
-LNS
Line Sync (see Notes)
-MB
Multi-box option. Provides additional controller(s) on 9000Lx/2,
12000Lx/2, 13500Lx/3 or 18000Lx/3 configurations allowing system to be
separated into individual functional units.
-RMS
Set of 2 Rack mount slides. (Left and Right) Recommended to mount Lx
Chassis in 19 inch instrument cabinet.
-RP
Replaces standard Lx numeric keypad keyboard/display with Ls type
dual shuttle knob style keyboard/display.
-RPV
Remote programming voltage. DC voltage input 0 to +10 VDC for 0 to
full-scale output voltage programming.
2.6 Available Options – Lx Series
28
User Manual Lx / Ls Series II
Notes:
External Trigger input is standard.
Line sync and External sync are mutually exclusive.
External Trigger input and External sync are mutually exclusive.
Units with -LKS (auxiliary) cannot have Line Sync or External Sync.
Voltage:
Ranges (L-N):
Low range
0 - 135 Vrms
High range
0 - 270 Vrms
Maximum Current at Full Power
Note: Current, maximum amps per phase available at on low voltage range. 3000Lx and 4500Lx
operate in constant power mode up to currents shown at reduced voltage. See Figure 2-1.
For 9000Lx/2 and 12000Lx/2, currents are 2 x 4500Lx and 6000Lx.
For 13500Lx/3 and 18000Lx/3, currents are 3 x 4500Lx and 6000Lx
Model
3000Lx-HV
4500Lx-HV
6000Lx-HV
Single Phase Mode:
Max. RMS, low Vrange
44.4 A
44.4 A
44.4 A
Three Phase Mode:
Max. RMS, low Vrange
per phase
14.8 A
14.8 A
14.8 A
Note: Current derates linearly from 50% of voltage range to 20% of specified current at 10% of
voltage range.
Current in High voltage range is reduced by a factor of 2.
Note: For 9000Lx/2-HV and 12000Lx/2-HV, currents are 2 x 4500Lx-HV and 6000Lx-HV.
For 13500Lx/3-HV and 18000Lx/3-HV, currents are 3 x 4500Lx-HV and 6000Lx-HV
Maximum Current at Full Scale Voltage
Model
3000Lx-HV
4500Lx-HV
6000Lx-HV
Single Phase Mode:
Max. RMS, low Vrange
22.2 A
33.3 A
44.4 A
Three Phase Mode:
Max. RMS, low Vrange
per phase
7.4 A
11.1 A
14.8 A
2.6.1 -HV Option Lx Series - Supplemental Specifications
Specifications for Lx units with -HV voltage range option installed are same as standard Lx unit
except where noted below.
29
User Manual Lx / Ls Series II
Voltage:
Ranges (L-N):
Low range
0 - 200 Vrms
High range
0 - 400 Vrms
Maximum Current at Full Power
Note: Current, maximum amps per phase available at on low voltage range. 3000Lx and 4500Lx
operate in constant power mode up to currents shown at reduced voltage. See Figure 2-1.
For 9000Lx/2 and 12000Lx/2, currents are 2 x 4500Lx and 6000Lx.
For 13500Lx/3 and 18000Lx/3, currents are 3 x 4500Lx and 6000Lx
Model
3000Lx-EHV
4500Lx-EHV
6000Lx-EHV
Single Phase Mode:
Max. RMS, low Vrange
30.0 A
30.0 A
30.0 A
Three Phase Mode:
Max. RMS, low Vrange
per phase
10.0 A
10.0 A
10.0 A
Note: Current derates linearly from 50% of voltage range to 20% of specified current at 10% of
voltage range.
Current in High voltage range is reduced by a factor of 2.
Note: For 9000Lx/2-EHV and 12000Lx/2-EHV, currents are 2 x 4500Lx-EHV and 6000Lx-EHV.
For 13500Lx/3-EHV and 18000Lx/3-EHV, currents are 3 x 4500Lx-EHV and 6000Lx-EHV
Maximum Current at Full Scale Voltage
Model
3000Lx-EHV
4500Lx-EHV
6000Lx-EHV
Single Phase Mode:
Max. RMS, low Vrange
15.0 A
22.5 A
30.0 A
Three Phase Mode:
Max. RMS, low Vrange
per phase
5.0 A
7.5 A
10.0 A
2.6.2 -EHV Option Lx Series - Supplemental Specifications
Specifications for Lx units with -EHV voltage range option installed are same as standard Lx unit
except where noted below.
30
User Manual Lx / Ls Series II
Frequency Range
Model
3000Lx-HF, 4500Lx-HF, 6000Lx-
HF
9000Lx/2-HF, 13500Lx/3-HF
12000Lx/3-HF, 18000Lx/3-HF
Three phase mode
45 Hz - 5000 Hz
45 Hz - 2000 Hz
2000 - 5000 Hz (see Note)
Single phase mode
45 Hz - 5000 Hz
45 Hz - 2000 Hz
2000 - 5000 Hz (see Note)
Note: On multi box systems -HF frequency limit is set to 5000 Hz but performance to specification is
guaranteed only to 2000 Hz. Above 2000 Hz, full power may not be available due to amplifier
unbalance. Current measurements accuracy is affected by system interface cable cross talk
above 2000 Hz.
Output
Programming
Accuracy:
< 1000 Hz ± (0.05% + 0.25 V) from 5V to FS.
> 1000 Hz ± (0.1% + 0.1% / KHz + 0.3V) from 5V to FS
Output Noise:
(20 kHz to 1 MHz)
< 250 mV
RMS typical
Parameter
Range
Accuracy ( )
Resolution
1 Phase Mode
3 Phase Mode
Frequency1
45.00 - 5000.0 Hz
0.1% ± 1 digit
0.01 Hz to 81.91 Hz
0.1 Hz to 819.1 Hz
1 Hz > 819.1 Hz
Phase
45.00 - 100.0 Hz
100.0 - 2000 Hz
> 2000 Hz
0.5°
2°
5°
0. 1°
RMS Voltage
0 - 400 Volts
< 1000 Hz
> 1000 Hz
0.05% + 0.25V
0.1% + 0.1% / KHz + 0.3V
0.01 Volt
RMS Current
0 - 50 Amps
0.5% + 0.15A
0.5% + 0.05A
0.001 Amp
Peak Current
0 - 150 Amps
0.5% + 0. 5A
0.5% + 0.15A
0.001 Amp
Crest Factor
1.00 – 10.00
1.5 %
1.5 %
0.01
VA Power
0 - 6 KVA
0.5% + 9 VA
0.5% + 3 VA
1 VA
Real Power
0 - 6 KW
0.5% + 9 W
0.5% + 3 W
1 W
Power Factor
0.00 - 1.00
0.03
0.01
0.01
2.6.3 -HF Option Lx Series - Supplemental Specifications
Specification for Lx units with -HF frequency range option installed are same as standard Lx unit
except where noted below.
For output frequencies up to 1000 Hz, refer to standard measurement specifications. For output
frequencies above 1000 Hz, see table below.
1
Frequency measurement specifications valid with output voltage of 30Vrms or higher. If output relay is open,
frequency measurement will return 0.0 Hz.
31
User Manual Lx / Ls Series II
Note: Accuracy specifications are valid above 100 counts. For multi-chassis configurations, Current
and Power range and accuracy specifications are times the number of chassis.
Note: Frequency measurement specification valid for output > 20 Vrms.
Note: Crest Factor accuracy applies for Irms > 50% of max.
Note: Power factor accuracy applies for PF > 0.5 and VA > 50 % of max.
32
User Manual Lx / Ls Series II
Parameter
Supplemental Specification
Phase D Output
Voltage
26.0 Vrms ± 0.52 V
Load Regulation
< 1.5 %
Voltage Distortion
< 1.0 % THD
Max. Current
3.0 Arms
Frequency range:
360 – 440 Hz, locked to programmed frequency.
If programmed exceeds 819 Hz, -AX outputs will turn off.
Phase error to phase 1
< 3.0°
Phase E Output
Voltage
5.0 Vrms ± 0.25 V
Load Regulation
< 10 %
Max. Current
1.0 Arms
Frequency range:
360 – 440 Hz, locked to programmed frequency.
If programmed exceeds 819 Hz, -AX outputs will turn off.
Phase error to phase 1
< 3.0°
Parameter
Supplemental Specification
Voltage
Voltage Distortion
Standard: standard specifications apply.
With –HF option: < 2 % [45 - 1000 Hz]
< 2 % + 1%/kHz [> 2000 Hz]
(harmonics and noise to 300 kHz)
Frequency
Range
Standard Lx: 45 – 819 Hz
With –HF option: 45 - 5000 Hz.
Resolution
Standard Lx: 0.1 Hz
2.6.4 -AX Option Lx Series - Supplemental Specifications
Specifications for -AX auxiliary output voltage option on the Lx units are listed below. This output
is available on the Phase D and E terminal strip. There is no external sense connection for the –
AX outputs. Sense is internal only. Specifications apply for programmed frequency range of 360
Hz to 440 Hz.
2.6.5 -LKM and -LKS Options Lx Series - Supplemental Specifications
The Clock and Lock option enables two independent Ls/Lx power systems to be phase synchronized to
each other. One system (-LKM) acts as the master, the other(s) (-LKS) as auxiliaries. The –LKS unit is
synced to the –LKM unit. Refer to section 3.9 for details on Clock and Lock mode. Note that the maximum
number of auxiliary units (-LKS) per master (-LKM) is one. No T connectors are allowed to increase the
number of auxiliary units as this may cause reflections on the clock and lock signals.
The following supplemental specifications apply when the Lx is configured with the Clock and Lock option.
(-LKM or –LKS).
33
User Manual Lx / Ls Series II
Parameter
Supplemental Specification
With –HF option: 1 Hz
Accuracy
± 0.025%
Phase
Phase Resolution
Standard: standard specifications apply.
With –HF option: 0.5°
Phase Accuracy
Standard: standard specifications apply.
With –HF option: < 2° + 1°/kHz
Note: Specification valid under equal load conditions.
Parameter
Supplemental Specification
Input
Voltage Input
TTL Level square wave.
Impedance
10 KOhm.
Frequency
Range
Same as internal clock mode. See configuration limits.
Max Sync Input Slew Rate
Units with firmware revision less than 1.5: < 80 Hz / sec.
Units with firmware revision 1.5 or higher: < 250 Hz / sec
Max Sync Step
Units with firmware revision less than 1.5: < 20 Hz.
Units with firmware revision 1.5 or higher: < 200 Hz
Errors
Error 804
External Sync Error
Following conditions will result in Error 804:
1.Loss of sync input signal
2. Sudden changes in sync input frequency (see max. sync step).
3. Fast changes in sync input frequency (see max sync slew rate).
Response time to detect sync fault is 400 msec. If a sync error occurs, the
output relay will be opened. Units with firmware revision less than 1.5 will
remain in External sync mode. Units with firmware revision 1.5 or higher
will revert back to Internal Sync mode.
Mode Selection
Units with firmware revision less than 1.5:
When switching between INT and EXT sync mode, the output of the AC
source will be dropped momentarily.
Units with firmware revision 1.5 or higher:
When switching form INT to EXT sync mode, the internal frequency is set
to the detected ext sync frequency first, then the mode is switched to
external sync. This sync process takes about 200 msec so there will be this
much delay between receiving the EXT sync command and the actual
change of sync mode. The output does not drop out during this time.
Restrictions
Frequency cannot be programmed in external sync mode.
Frequency transient list system is not available in sync mode.
Transient list dwell times are not correlated to external sync but based on
internal timebase.
Units with firmware revision 1.5 or higher:
When switching from INT to EXT sync mode, the difference between the
internal frequency present at the time and the external sync frequency may
2.6.6 –EXS Option Lx Series - Supplemental Specifications
The –EXS (External Sync) option allows the output frequency of the AC source to be synchronized to an
external TTL level clock signal. Note that some implementation changes were made starting with firmware
revision 1.50 as indicated below.
The following supplemental specifications apply when the Lx is configured with the external sync option. (EXS).
34
User Manual Lx / Ls Series II
Parameter
Supplemental Specification
not exceed 200 Hz.
35
User Manual Lx / Ls Series II
Output Options
-AX
Auxiliary outputs, 5 VAC and 26 VAC, 400 Hz. (Output D and E)
- HV
156 / 312 V range output
- EHV
200 / 400 V range output
-HF
High frequency option. Increases output frequency to 5000 Hz (single
chassis configurations) or 2000 Hz (multi-chassis models).
-LF
Low frequency option. Limits maximum output frequency to 500 Hz.
-MODE
Adds single phase and three phase mode switching capability to –3 LS
models. Not available on –1 models.
Firmware Options
- 160
RTCA/DO-160D test firmware.
Includes RCTA-DO160D, section 16, Change #2 and EURO/CAE-14D
AC tests only.
- 704
Mil Std 704 test firmware – MIL704
Includes AC tests for Revisions D and E
- 704F
Mil Std 704 test firmware – MS704
Includes AC tests for Revisions A through F
-ABD
Airbus ABD0100.1.8 Tests. – ABD
Includes tables A, B and C.
This option can only be used with the provided LxGui Windows software.
-AMD
Airbus AMD234 Tests. – AMD
This option can only be used with the provided LxGui Windows software.
-B787
Boeing 787B3-0147 Tests. – B787
This option can only be used with the provided LxGui Windows software.
Misc. Options
-ADV
Advanced features package. Adds arbitrary waveform generation and
harmonic analysis measurements. For specifications, see Lx Series.
-EXS
External Sync (see Notes)
-GPIB
GPIB interface. Also adds APE command language support for
backward compatibility with L Series. See Lx/Ls Programming Manual
P/N 7004-981 for detail on APE command language.
As of firmware revision 1.61, the ABLE (Atlas Based Language
Extension) command syntax is supported as well with the –GPIB option.
For details on using SCPI, APE or ABLE programming language, refer to
the Lx/Ls Series Programming Manual (P/N 7004-981).
-KP
Replaces standard Ls dual shuttle knob keyboard/display with Lx type
numeric keypad style keyboard/display.
-L22
Locking Knobs. Shaft lock screws replace knobs to prevent turning of
Voltage and Frequency shuttles.
-LAN
Ethernet LAN interface connection. RJ45 connector.
Note: When installed, RS232C interface is disabled.
-LKM
Clock and Lock Master. Enables synchronizing outputs of two Lx AC
sources, one acts as master.
This mode supports a frequency range of 45 to 819 Hz on standard
Lx/Ls models. See section 3.9.
2.7 Available Options – Ls Series
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User Manual Lx / Ls Series II
-LKS
Clock and Lock Auxiliary. See -LKM for details. (See Notes, see section
3.9.)
-LNS
Line Sync (see Notes)
-MB
Multi-box option. Provides additional controller(s) on 9000Ls/2,
12000Ls/2, 13500Ls/3 or 18000Ls/3 configurations allowing system to
be separated into individual functional units.
-RMS
Set of 2 Rack mount slides. (Left and Right) Recommended to mount Lx
Chassis in 19-inch instrument cabinet.
-RPV
Remote programming voltage. DC voltage input 0 to +10 VDC for 0 to
full-scale output voltage programming.
Notes:
External Trigger input is standard.
Line sync and External sync are mutually exclusive.
External Trigger input and External sync are mutually exclusive.
Units with -LKS (auxiliary) cannot have Line Sync or External Sync.
Voltage:
Ranges (L-N):
Low range
0 - 156 Vrms
High range
0 - 312 Vrms
Maximum Current at Full Power
Note: Current, maximum amps per phase available at on low voltage range. 3000Ls and 4500Ls
operate in constant power mode up to currents shown at reduced voltage. See Figure 2-1.
For 9000Ls/2 and 12000Ls/2, currents are 2 x 4500Ls and 6000Ls.
For 13500Ls/3 and 18000Ls/3, currents are 3 x 4500Ls and 6000Ls
Model
3000Ls-HV
4500Ls-HV
6000Ls-HV
Single Phase Mode:
Max. RMS, low Vrange
38.4 A
38.4 A
38.4 A
Three Phase Mode:
Max. RMS, low Vrange
per phase
12.8 A
12.8 A
12.8 A
Note: Current derates linearly from 50% of voltage range to 20% of specified current at 10% of
voltage range.
Current in High voltage range is reduced by a factor of 2.
Note: For 9000Ls/2-HV and 12000Ls/2-HV, currents are 2 x 4500Ls-HV and 6000Ls-HV.
For 13500Ls/3-HV and 18000Ls/3-HV, currents are 3 x 4500Ls-HV and 6000Ls-HV
Maximum Current at Full Scale Voltage
Model
3000Ls-HV
4500Ls-HV
6000Ls-HV
Single Phase Mode:
Max. RMS, low Vrange
19.2 A
28.8 A
38.4 A
Three Phase Mode:
Max. RMS, low Vrange
per phase
6.4 A
9.6 A
12.8 A
2.7.1 -HV Option Ls Series - Supplemental Specifications
Specifications for Ls units with -HV voltage range option installed are same as standard Ls unit
except where noted below.
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User Manual Lx / Ls Series II
Frequency Range
Model
3000Ls-HF, 4500Ls-HF
, 6000Ls-HF
9000Ls/2-HF, 13500Ls/3-HF
12000Ls/3-HF, 18000Ls/3-HF
Three phase mode
45 Hz - 5000 Hz
45 Hz – 20001 Hz
Single phase mode
45 Hz - 5000 Hz
45 Hz - 20001 Hz
Output
Programming
Accuracy:
< 1000 Hz ± (0.05% + 0.25 V) from 5V to FS.
> 1000 Hz ± (0.1% + 0.1% / KHz + 0.3V) from 5V to FS
Output Noise:
(20 kHz to 1 MHz)
< 250 mV
RMS typical
Parameter
Range
Accuracy ( )
Resolution
1 Phase Mode
3 Phase Mode
Frequency2
45.00 - 5000.0 Hz
0.1% ± 1 digit
0.01 Hz to 81.91 Hz
0.1 Hz to 819.1 Hz
1 Hz > 819.1 Hz
Phase
45.00 - 100.0 Hz
100.0 - 2000 Hz
> 2000 Hz
0.5°
2°
5°
0. 1°
RMS Voltage
0 - 400 Volts
< 1000 Hz
> 1000 Hz
0.05% + 0.25V
0.1% + 0.1% / KHz + 0.3V
0.01 Volt
RMS Current
0 - 50 Amps
0.5% + 0.15A
0.5% + 0.05A
0.001 Amp
Peak Current
0 - 150 Amps
0.5% + 0. 5A
0.5% + 0.15A
0.001 Amp
Crest Factor
1.00 – 10.00
1.5 %
1.5 %
0.01
VA Power
0 - 6 KVA
0.5% + 9 VA
0.5% + 3 VA
1 VA
Real Power
0 - 6 KW
0.5% + 9 W
0.5% + 3 W
1 W
Power Factor
0.00 - 1.00
0.03
0.01
0.01
2.7.2 EHV Option Ls Series -Supplemental Specifications
Specifications for Ls units with -EHV voltage range option installed are same the Lx with –EHV
option. See paragraph 2.6.2.
2.7.3 -HF Option Supplemental Specifications
Specification for Ls units with -HF frequency range option installed are same as standard Ls unit
except where noted below.
For output frequencies up to 1000 Hz, refer to standard measurement specifications. For output
frequencies above 1000 Hz, see table below.
1
Multi box systems –HF frequency limit is set to 5000 Hz but performance to specification is guaranteed only to 2000 Hz. Above
2000 Hz, full power may not be available due to amplifier unbalance. Current measurements accuracy is affected by system
interface cable cross talk above 2000 Hz.
2
Frequency measurement specifications valid with output voltage of 30Vrms or higher. If output relay is open,
frequency measurement will return 0.0 Hz.
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User Manual Lx / Ls Series II
Note: Accuracy specifications are valid above 100 counts. For multi-chassis configurations, Current
and Power range and accuracy specifications are times the number of chassis.
Note: Frequency measurement specification valid for output > 20 Vrms.
Note: Crest Factor accuracy applies for Irms > 50% of max.
Note: Power factor accuracy applies for PF > 0.5 and VA > 50 % of max.
Parameter
Supplemental Specification
Phase D Output
Voltage
26.0 Vrms ± 0.52 V
Load Regulation
1.5 %
Voltage Distortion
< 1.0 % THD
Max. Current
3.0 Arms
Frequency range:
360 – 440 Hz, locked to programmed frequency.
If programmed frequency exceeds 819 Hz, -AX outputs will turn off.
Phase error to phase A
< 3.0°
Phase E Output
Voltage
5.0 Vrms ± 0.25 V
Load Regulation
< 10 %
Max. Current
1.0 Arms
Frequency range:
360 – 440 Hz, locked to programmed frequency.
If programmed frequency exceeds 819 Hz, -AX outputs will turn off.
2.7.4 -AX Option Ls Series - Supplemental Specifications
Specifications for -AX auxiliary output voltage option on the Ls units are listed below. This output
is available on the Phase D and E terminal strip. There is no external sense connection for the –
AX outputs. Sense is internal only. Specifications apply for programmed frequency range of 360
Hz to 440 Hz.
2.7.5 -LKM and -LKS Options Ls Series - Supplemental Specifications
The Clock and Lock option enables two independent Ls/Lx power systems to be phase synchronized to
each other. One system (-LKM) acts as the master, the other(s) (-LKS) as auxiliaries. The –LKS units are
synced to the –LKM unit. Refer to section 3.9 for details on Clock and Lock mode. Note that the maximum
number of auxiliary units (-LKS) per master (-LKM) is one. No T connectors are allowed to increase the
number of auxiliary units as this may cause reflections on the clock and lock signals.
The following supplemental specifications apply when the Ls is configured with the Clock and Lock option.
(-LKM or –LKS).
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User Manual Lx / Ls Series II
Parameter
Supplemental Specification
(harmonics and noise to 300 kHz)
Frequency
Range
Standard Lx: 45 – 819 Hz
With –HF option: 45 - 5000 Hz.
Resolution
Standard Lx: 0.1 Hz
With –HF option: 1 Hz
Accuracy
± 0.025%
Phase
Phase Resolution
Standard: standard specifications apply.
With –HF option: 0.5°
Phase Accuracy
Standard: standard specifications apply.
With –HF option: < 2° + 1°/kHz
Note: Specification valid under equal load conditions.
Parameter
Supplemental Specification
Input
Voltage Input
TTL Level square wave.
Impedance
10 KOhm.
Frequency
Range
Same as internal clock mode. See configuration limits.
Max Sync Input Slew Rate
Units with firmware revision less than 1.5: < 80 Hz / sec.
Units with firmware revision 1.5 or higher: < 250 Hz / sec
Max Sync Step
Units with firmware revision less than 1.5: < 20 Hz.
Units with firmware revision 1.5 or higher: < 200 Hz
Errors
Error 804
External Sync Error
Following conditions will result in Error 804:
1.Loss of sync input signal
2. Sudden changes in sync input frequency (see max. sync step).
3. Fast changes in sync input frequency (see max sync slew rate).
Response time to detect sync fault is 400 msec. If a sync error occurs, the
output relay will be opened. Units with firmware revision less than 1.5 will
remain in External sync mode. Units with firmware revision 1.5 or higher
will revert back to Internal Sync mode.
Mode Selection
Units with firmware revision less than 1.5:
When switching between INT and EXT sync mode, the output of the AC
source will be dropped momentarily.
Units with firmware revision 1.5 or higher:
When switching form INT to EXT sync mode, the internal frequency is set
to the detected ext sync frequency first, then the mode is switched to
external sync. This sync process takes about 200 msec so there will be this
much delay between receiving the EXT sync command and the actual
change of sync mode. The output does not drop out during this time.
2.7.6 –EXS Option Ls Series - Supplemental Specifications
The –EXS (External Sync) option allows the output frequency of the AC source to be synchronized to an
external TTL level clock signal. Note that some implementation changes were made starting with firmware
revision 1.50 as indicated below.
The following supplemental specifications apply when the Ls is configured with the external sync option. (EXS).
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User Manual Lx / Ls Series II
Parameter
Supplemental Specification
Restrictions
Frequency cannot be programmed in external sync mode.
Frequency transient list system is not available in sync mode.
Transient list dwell times are not correlated to external sync but based on
internal timebase.
Units with firmware revision 1.5 or higher:
When switching from INT to EXT sync mode, the difference between the
internal frequency present at the time and the external sync frequency may
not exceed 200 Hz.
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User Manual Lx / Ls Series II
3. Unpacking and Installation
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. If
possible, retain the container in the event the system ever has to be returned to the factory for
either repair of upgrades
WARNING: This power source weighs approximately 175 lbs / 79.4 Kg per chassis (2
chassis total) Obtain adequate help when moving or installing the unit. Make sure the
cabinet and rack slides used to install the Lx or Ls Series unit(s) can support the
weight of the unit(s).
3.2 Power Requirements
The Lx / Ls Series power Source has been designed to operate from a three-phase, three wire
(Wye or Delta) AC input line. A protective earth connection is required as well. (PE).
Available three-phase input setting is 208 to 230 VLL nominal for standard Lx / Ls models, 400
VLL nominal for Lx / Ls Series with option –400 or 480 VLL nominal for Lx / Ls Series with option –
480. All three phase input is three wire plus ground.
The 3000Lx/Ls model with standard 208V L-L AC input may be operated from a single phase
208-230 V L-N AC input as well. In this case, the single phase AC must be connected between
TB3 L2-L3 inputs for 3000Lx or TB3 ØB – ØC inputs for 3000Ls. Note that input current will be
significantly higher than for a 3 phase AC input connection so wire size and AC disconnects used
must be sized accordingly.
CAUTION: Do not connect 400Vor 480V into a unit designed for 208V use. The result
could be a severely damaged unit. Always check the input rating on the model
number tag before connecting AC input power. AC voltage input settings CANNOT be
changed in the field.
3.3 Mechanical Installation
The Lx / Ls Series AC power sources can be used free standing on a solid surface or mounted in
a 19” instrument cabinet. The units are fan cooled, drawing air in from the side and exhausting
at the rear. The back of each unit must be kept clear of obstruction and a 3” clearance must be
maintained to the rear. Special consideration of overall airflow characteristics and the resultant
internal heat rise must be considered at all times to avoid self heating and over temperature
problems.
Multi chassis configurations such as the 9000Lx/2 or 9000Ls/2 consist of two self-contained
4500Lx or 4500Ls power sources. They must be connected through the system interface using
the supplied DB25 to DB25 cable. Output wiring from each chassis to the EUT must be of equal wire gage and length to ensure proper current sharing between units.
Note that for multi-chassis systems, it is recommended to turn the Master unit ON first and then
the Auxiliary unit(s). To turn the system off, turn OFF the Auxiliary unit(s) first and then the
Master unit.
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User Manual Lx / Ls Series II
FLT INH OUT1 IN1 RPV
TRIGGER
IEEE-488
RS232C
AUX OUTPUT OUTPUT
HI
LO
HI
LO
26VAC
5VAC
Ø1
Ø2
Ø3
COM
SENSE
Ø1
Ø2
Ø3
COM
300 VAC MAX TO
TO MASTER INTERFACE
TO AUXILIARY INTERFACE
CLOCK
LOCK
SERIAL TAG
L1
L2
L3
INPUT
OUTPUT
SAFETY
COVER
INPUT
SAFETY
COVER
VOLTAGE INPUT
RATING
USB
LAN
Figure 3-1: Rear Panel Connector Locations – Lx Series
43
User Manual Lx / Ls Series II
J3-DFI INH FSTB TRIG RPV
J5 - IEEE-488
RS232C
AUX OUTPUT
TB2
HI
LO
HI
LO
ØA
ØB
ØC
NEUT
ØA HI
ØB HI
ØC HI
NEUT
TO MASTER INTERFACE
TO AUXILIARY INTERFACE
J1
CLOCK
J2
LOCK
SERIAL TAG
øA
øB
øC
GND
INPUT
TB3
OUTPUT
SAFETY
COVER
INPUT
SAFETY
COVER
VOLTAGE INPUT
RATING
J6 EXT SENSE
øD
øE
OUTPUT
TB1
J7
36/27
J7
31/14
USB
LAN
44
Figure 3-2: Rear Panel Connector Locations – Ls Series
User Manual Lx / Ls Series II
3.4 AC Input Wiring - INPUT
AC input connections are to be made directly to the input fuse block of all units that make up a Lx
/ Ls system. The input block is located on the lower right hand corner of the back of the
4500Lx/Ls and 4500Lx/Ls-NO chassis. It is labeled “INPUT” on the Lx and “INPUT TB3” on the
Ls models.
Ground (earth) wire must be connected to the chassis of the AC power system using the ground
connection of the AC input fuse block. The mains source must have a current rating equal to or
greater than the input fuses and the input wiring must be sized to satisfy the applicable electrical
codes.
The input power cables must be large enough to handle the input current of the power source
and must conform to local electrical codes. Consult a qualified electrician prior to installation.
Note that all wires must be sized to accommodate the worst-case maximum current that may
occur under low line conditions. Local electrical codes may also require different wire types and
sizes.
Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate
the voltage drop from the following formula:
2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP
Note: If possible, keep input cable lengths for Master and Auxiliary chassis equal.
CAUTION: Capacitors in the power source may hold a hazardous electrical charge
even if the power source has been disconnected from the mains supply. Allow
capacitors to discharge to a safe voltage before touching exposed pins of mains
supply connectors.
Power modules need at least 10 Minutes to discharge to safe levels before they can be
removed.
3.5 Output Connections
3.5.1 Output Wiring
The output terminal blocks for each unit are located at the rear of the unit. Three phase output
connections are made to the terminal block labeled OUTPUT. For a 9000Lx/2 or 9000Ls/2two
box system, the output terminals from both the master 4500Lx or 4500Ls and Auxiliary 4500Lx or
4500Ls must be connected together. See Figure 3-3.
On Lx Series, the phase outputs are labeled ø1, ø2, ø3 and COM. (Same labeling as Hewlett
Packard / Agilent HP6834 and California Instruments iL Series) The common (neutral)
connection (if needed) can be made on the same terminal block labeled COM. If the power
source is operated in single-phase mode, all power is available from the ø1 output connection.
The neutral connection (COM) is always required for single-phase output mode on a 9000Lx/2
and may be used if needed for the EUT for all three-phase output modes.
On Ls Series, the phase outputs are labeled øA, øB, øC and NEUT. (Same labeling as California
Instruments L Series) The neutral connection (if needed) can be made on the same terminal
block labeled COM. If the power source is a single-phase model or operated in single phase
mode, all power is available from the øA output connection. The neutral connection (COM) is
45
User Manual Lx / Ls Series II
always required for single-phase output mode on a 9000Ls/2 and may be used if needed for the
EUT for all three-phase output modes.
The external sense inputs allow the power system output voltages to be monitored directly at the
load and must be connected at external sense connector. The external sense wires should be
run as a twisted pair for short lengths. Sense leads over three (3) feet long should be run as a
twisted shielded pair.
Note: The output of the power source is isolated from the input line and floating with
respect to chassis ground. If needed, either side (HI or LO) may be grounded.
The output power cables must be large enough to prevent a total voltage drop exceeding 1% of
the rated output voltage between the power source and the load. Note that wires must be sized
to accommodate the maximum current that is available. This may be a function of the voltage
range and phase mode of the Lx \ Ls model on hand. Always use the current available on the low
voltage range to size the wires.
Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate
the voltage drop from the following formula:
2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP
Note: Ensure that output cable lengths from Master and Auxiliary chassis to EUT are of
identical length.
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User Manual Lx / Ls Series II
Connector
Terminal
Mode
Lx Output
OUTPUT
Ls Output
TB1
1
3 Phase & 1 Phase
Ø1
ØA 2
3 Phase
Ø2
ØB 3
3 Phase
Ø3
ØB 4
Common / Neutral
COM
NEUT
3.5.2 Output Terminal Block - OUTPUT
Each 3000/4500/6000Lx\Ls chassis has a single AC output terminal block. For tabletop operation
of a single chassis system, the output terminal block must be covered using the supplied AC
Output safety cover. The terminal blocks are large enough to accommodate required wire gauge
sizes. The terminal block is located in the upper left corner on the rear panel of the unit. (Looking
from the back).
Multi-chassis configurations have two or more output terminal blocks, one on the master Lx \ Ls
chassis and one of the auxiliary Lx \ Ls chassis.
For operation as a multi-chassis system, the outputs of all Lx \ Ls chassis‟ must be connected
together using the additional terminal blocks provided in the Lx \ Ls ship kit. Keep the wire
lengths between each chassis and this common terminal block the same.
See Figure 3-3 for output wiring diagram.
Table 3-1: Output Terminal connections.
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User Manual Lx / Ls Series II
FLT INH OUT1 IN1 RPV
TRIGGER
IEEE-488
AUX OUTPUT OUTPUT
HI
LO
HI
LO
26VAC
5VAC
Ø1
Ø2
Ø3
COM
SENSE
Ø1
Ø2
Ø3
COM
300 VAC MAX TO
TO MASTER INTERFACE
TO AUXILIARY INTERFACE
CLOCK
LOCK
FLT INH OUT1 IN1 RPV
TRIGGER
AUX OUTPUT OUTPUT
HI
LO
HI
LO
26VAC
5VAC
Ø1
Ø2
Ø3
COM
SENSE
Ø1
Ø2
Ø3
COM
300 VAC MAX TO
TOMASTERINTERFACE
TO AUXILIARY INTERFACE
CLOCK
LOCK
9000Lx/2
TERMINAL
BLOCK
LOAD
MASTER
AUXILIARY
L1 L2 L3 GND
AC SERVICE
ø1
ø2
ø3
SERIAL TAG
L1
L2
L3
INPUT
INPUT
SAFETY
COVER
VOLTAGE INPUT
RATING
SERIAL TAG
L1
L2
L3
INPUT
INPUT
SAFETY
COVER
VOLTAGE INPUT
RATING
RS232C
USB
LAN
RS232C
USB
LAN
3.5.3 Multi-chassis Output Wiring Diagram
Figure 3-3 shows the required output connections for a 9000Lx/2 or 9000Ls/2 two chassis
system (rear-view perspective). Always turn off AC mains power to the 9000Lx/2 or 9000Ls/2
by turning off the circuit breakers on both the Master and Auxiliary 4500Lx / Ls power
source before making or changing output connections. The terminal block shown to connect
the outputs of both chassis together is provided in the 9000Lx/2 or 9000Ls/2 ship kit. The System
Interface cable is a DB25 to DB25 M/F cable approximately 2 meters in length. (CI P/N 250778).
This cable connects between the male DB25 connector on the Master unit rear panel labeled TO
AUXILIARY INTERFACE and the female DB25 connector on the Auxiliary unit rear panel labeled
TO MASTER INTERFACE as shown in Figure 3-3. The OUTPUT SAFETY COVER must be
removed to use the System Interface and the AC Source must be installed in a cabinet with a
protective rear screen or door.
208 - 230 VAC nominal (Std)
400 VAC nominal (-400 option)
480 VAC nominal (-480 option)
Note: For 3000Lx/Ls operated from
single-phase AC input, use L2-L3.
AC Output
(OUTPUT)
Function
Connects To
Ø1
Ø2
Ø3
COM
AC output
User Load
External Sense
Function
Table
Sense Ø1, Ø2, Ø3,
COM
External Sense
Table 3-7
Ls Series
AC Input
(INPUT TB3)
Function
Connects To
ØA – AC in
ØB – AC in
ØC – AC in
CHASSIS - GND
Primary AC Power Input
208 - 230 VAC nominal (Std)
400 VAC nominal (-400 option)
480 VAC nominal (-480 option)
Note: For 3000Lx/Ls operated from
single-phase AC input, use ØB- ØC.
AC Output
(OUTPUT TB1)
Function
Connects To
ØA
ØB
ØC
NEUT
AC output
User Load
External Sense
Function
Table
Sense ØA HI, ØB
HI, ØC HI, NEUT
External Sense
Table 3-7
Lx and Ls Series
Remote Control
Function
Table
RS232
Serial Control Interface
Table 3-8
IEEE-488
GPIB Control Interface
See IEEE-488 standard for pin out.
Optional on Ls.
LAN
Ethernet Interface
Optional on Lx and Ls.
USB
USB Control Interface
System Interface
Function
Table
Master
Connects to Master
DB25, MALE
Auxiliary
Connects to Auxiliary
DB25, FEMALE
Lx Series
Other
Function
Table
3.6 Connectors - Rear Panel
A number of connectors are located along the top rear covers. These connectors are in a
recessed area to protect them from shipment damage. A summary of available connectors is
provided in the table below.
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User Manual Lx / Ls Series II
Connector
SMA Connectors
Discrete Fault Indicator
Table 3-4
Remote Inhibit
Table 3-4
Trigger Out1
(Function Strobe)
Table 3-4
Trigger In1
Table 3-4
RPV (N/A)
Table 3-4
BNC Connectors
Clock
Table 3-6 -LKM / -LKS option
Lock
Table 3-6
Ls Series
Other
Function
Table
SMA Connectors
Discrete Fault Indicator
Table 3-4
J7-36+ / J7-27(Remote Shutdown)
Table 3-4
Function Strobe
Table 3-4
Trigger
Table 3-4
RPV (N/A)
Table 3-4
BNC Connectors
J1 - Clock
Table 3-6 -LKM / -LKS option
J2 - Lock
Table 3-6
INPUT.
Designator
Lx Series
Designator
Ls Series
Direction
Connection
Description
1
L1
ØA
Input
AC Line
2
L2
ØB
Input
AC Line
3
L3
ØC
Input
AC Line
4
GND
Gnd symbol
Chassis Ground
SMA
Description
Table 3-2: Rear Panel Connectors
3.6.1 AC Input Connector – INPUT
See section 3.4 for details on connecting AC input power. Labeled INPUT on Lx models, INTPUT
TB3 on Ls models.
Table 3-3: AC Input Terminal Block Connection Description
3.6.2 SMA Connectors – Lx Series
SMA connectors. Functions are called out on rear panel decal. Table 3-4 shows connections
from left to right when standing at the rear of the Lx cabinet. SMA connectors are small high
frequency capable coax connectors that can be screwed down securely to prevent signal loss.
Adaptor for SMA to BNC conversion are readily available.
To connect these signals using more conventional BNC cables, SMA Male to BNC Female
adapters may be used. These are available from www.pasternack.com , P/N PE9074.
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PE9074 Adaptor.
User Manual Lx / Ls Series II
SMA
Description
FLT
Discrete Fault Indicator output. Isolated Open Collector active high output with
internal pull up to +5Vdc. Can be used to signal external devices when a fault
condition is detected.
INH
Remote Inhibit. (TTL input)
TRIGGER
OUT1
Trigger Output (TTL output). The Trigger Output (Trig Out1) is an active low TTL signal
with a duration of no less than 400 usec.
(Can be set to Function Strobe for compatibility with CI L Series)
TRIGGER
IN1
Trigger Input (TTL input)
RPV / NA
Remote programming voltage. DC voltage input 0 to +10 VDC for 0 to full-scale output
voltage programming.(RPV option)
SMA
Description
J3
DFI
Discrete Fault Indicator output. Isolated Open Collector active high output with
internal pull up to +5Vdc. Can be used to signal external devices when a fault
condition is detected.
J7
36/27
INH
Remote Shutdown. (Inhibit) Active low TTL input. Equivalent to J7-36 (+) and J7-27 (-) on
CI L Series.
J7
31/14
FSTB
Function Strobe The function strobe is an active low TTL signal with a duration of no
less than 400 usec.
(Can be set to Trigger Output (TTL output) for compatibility with CI iL Series)
Equivalent to J7-31 (+) and J7-14 (-) on CI L Series.
TRIG
Trigger Input (TTL input)
RPV / NA
Remote programming voltage. DC voltage input 0 to +10 VDC for 0 to full-scale output
voltage programming.(RPV option)
Table 3-4: SMA Connectors – Lx Series
3.6.3 SMA Connectors – Ls Series
SMA connectors. Functions are called out on rear panel decal. Table 3-5 shows connections
from left to right when standing at the rear of the Ls cabinet. SMA connectors are small high
frequency capable coax connectors that can be screwed down securely to prevent signal loss.
Adaptor for SMA to BNC conversion are readily available.
To connect these signals using more conventional BNC cables, SMA Male to BNC Female
adapters may be used. These are available from www.pasternack.com , P/N PE9074.
PE9074 Adaptor.
Table 3-5: SMA Connectors – Ls Series
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User Manual Lx / Ls Series II
BNC
Ls Series
Ref.
Description
CLOCK
J1
Clock Option (TTL output on Master / TTL input on Auxiliary)
LOCK
J2
Lock Option (TTL output on Master / TTL input on Auxiliary)
Pin
Description - Lx Series
Description - Ls Series
1
Phase 1 sense Hi
Phase A sense Hi
2
Phase 2 sense Hi
Phase B sense Hi
3
Phase 3 sense Hi
Phase C sense Hi
4
Neutral sense
Neutral sense
5
-AX Option Phase D Hi – N/A
-AX Option Phase D Hi – N/A
6
-AX Option Phase D Lo – N/A
-AX Option Phase D Lo – N/A
Pin
Designator
Dir.
Description
1
Not used
N/C 2 TxD
Output
Transmit data
3
RxD
Input
Receive data
4
Not used
N/C 5 Common
Common
6
Not used
N/C 7 CTS
Input
Clear to send
8
RTS
Output
Request to send
9
Not used
N/C
3.6.4 BNC Connectors (-LKM / -LKS options)
BNC connectors. Functions are called out on rear panel decal. Table 3-6 shows connections for
the optional -LKM and -LKS clock and lock mode. Refer to section 3.9 for more details.
Table 3-6: BNC Connectors
3.6.5 External Sense Connector – SENSE
The external sense connections for Phase 1, 2 and 3 (A, B and C) in three-phase mode and
Phase 1 (A) in single phase mode MUST be connected for correct operation. Sense connections
must be made at the MASTER 4500Lx/Ls unit for a multi-box Lx/Ls system.
Table 3-7: External Sense Connector
3.6.6 RS232C Serial Interface – RS232C
A standard RS232C DB9 connector is located on the rear panel for serial control. A straight thru
DB9 male to DB9 female interface cable to 9-pin PC serial port connector may be used
Table 3-8: RS232C Connector
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User Manual Lx / Ls Series II
Pin
Name
Description
1
VBUS
+5 VDC
2
D-
Data -
3
D+
Data +
4
GND
Ground
3.6.7 System Interface Connectors – MASTER and AUXILIARY
WARNING: The system interface connectors are for use with AMETEK supplied
cables, and only between California Instruments equipment.
A set of two System Interface connectors is located on the rear panel of each 4500Lx/Ls chassis.
The system interface is used to connect the multiple 4500Lx/Ls or 6000Lx/Ls power sources in a
Master/Auxiliary configuration to create a 9000Lx/Ls/2, 12000Lx/Ls/2, 13500Lx/Ls/3 or
18000Lx/Ls/3 AC power source configuration. In this configuration, only the Master power
source has a built-in controller and front panel. The System Interface cable provided in the Lx or
Ls Series ship kit (CI P/N 250778) MUST be used to connect both chassis as shown in Figure
3-3.
Note that no user accessible signals are provided on the System Interface connections and they
should only be used for their intended purpose. To use the System Interface capability, the
output safety cover has to be removed. As such, multi-chassis configurations cannot be used
outside of a cabinet with proper rear screens.
Note that for multi-chassis systems, it is recommended to turn the Master unit ON first and then
the Auxiliary unit(s). To turn the system off, turn OFF the Auxiliary unit(s) first and then the
Master unit.
3.6.8 USB Interface
A standard USB Series B device connector is located on the rear panel for remote control. A
standard USB cable between the AC Source and a PC or USB Hub may be used.
Note: Use of the USB port to control more than one power source from a single PC is
not recommended, as communication may not be reliable. Use GPIB interface for
multiple power source control.
Figure 3-6: USB Connector pin orientation.
Table 3-9: USB Connector pin out.
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User Manual Lx / Ls Series II
Pin #
Ethernet TPE
10BaseT/100BastT/1000Base
T
EIA/TIA 568A
EIA/TIA 568B
Crossover
1
Transmit/Receive Data 0 +
White with green strip
White with orange stripe
2
Transmit/Receive Data 0 -
Green with white stripe or
solid green
Orange with white stripe or
solid orange
3
Transmit/Receive Data 1 +
White with orange stripe
White with green stripe
4
Transmit/Receive Data 2 +
Blue with white stripe or
solid blue
Blue with white stripe or
solid blue
5
Transmit/Receive Data 2 -
White with blue stripe
White with blue stripe
6
Transmit/Receive Data 1 -
Orange with white stripe
or solid orange
Green with white stripe or
solid
7
Transmit/Receive Data 3 +
White with brown strip or
solid brown
White with brown strip or
solid brown
8
Transmit/Receive Data 3 -
Brown with white stripe or
solid brown.
Brown with white stripe or
solid brown
3.6.9 LAN Interface – RJ45
An optonal RJ45 Ethernet 10BaseT connector is located on the rear panel for remote control. A
standard RJ45 UTP patch cord between the AC Source and a network Hub may be used to
connect the AC source to a LAN. For direct connection to a PC LAN card, a crossover RJ45
cable is required. Consult your network administrator for directions on connecting the AC source
to any corporate LAN.
If the –LAN Ethernet interface option is present, the MAC Address (Media Access Control) of the
Ethernet port is printed on the serial tag of the power source. The serial tag is located on the rear
panel of the unit.
For information on how to set up a network connection or a direct PC connection using the LAN
interface, refer to the Lx/Ls Series Programming Manual P/N 7004-981 distributed in Adobe PDF
format on CD ROM CIC496.
LAN
Table 3-10: RJ45 LAN Connector pin out.
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User Manual Lx / Ls Series II
3.7 Basic Initial Functional Test
CAUTION: Work carefully when performing these tests; hazardous voltages
are present on the input and output during this test.
Refer to Figure 3-3 for the required functional test set up. Proceed as follows to perform a basic
function check of the power system:
1. Verify the correct AC line input rating on the nameplate of the Lx/Ls unit(s) and make sure
the correct three-phase line voltage is wired to the input of the Lx/Ls before applying input
power.
2. Connect a suitable resistive or other type load to the output of the Lx or Ls. Suggested load
values for the low voltage range rounded up to the nearest 0.1 Ohm are shown in Table 3-11
for the Lx Series and Table 3-12 for the Ls Series.
For the high voltage range, the resistor values must be multiplied by four. For models with –
HV or –EHV voltage range option, recalculate these values by adjusting for the voltage range
value. Make sure the power resistor has sufficient power dissipation capability for full load
test and that the load used does not exceed the maximum power rating of the AC source.
For three phase configurations, this test can be performed on one phase at a time if needed.
3. Connect an oscilloscope and DMM / voltmeter to the AC source output. Set both for AC
mode.
4. If the correct voltage is present, turn on the Lx/Ls unit(s) by closing the On/Off circuit breaker
on the front panel of both chassis.
5. Set the output voltage to 0 volt and close the output relay with the OUTPUT ON/OFF button.
There should be little or no output although the DMM may show a noise level, especially if
the DMM is in auto ranging mode.
6. Select the Set screen and use the voltage shuttle to program a small voltage (20 VAC).
Observe the DMM reading. The reading should track the programmed voltage.
7. Also monitor the scope. The output should be a sinusoidal voltage waveform.
8. If the output tracks, increase the voltage till you reach 80 % of the voltage range or more.
Check the output voltage reading and waveform.
9. Select the measurement screen by pressing the Meas button. The output voltage, current
and power will be displayed. For three phase configurations, use the PHASE button to select
individual phase data. If all phases are loaded equally, the same current and power should
be visible for all three unless the voltages are not programmed to the same level. If only one
phase is loaded, current and power will only be shown for the loaded phase.
In the unlikely 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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User Manual Lx / Ls Series II
Model
3 Phase Mode, 150 V range
1 Phase Mode, 150 V range
3000Lx
22.5 Ohm
7.5 Ohm
4500Lx
15 Ohm
5.0 Ohm
6000Lx
11.8 Ohm
4.0 Ohm
9000Lx
7.5 Ohm
2,5 Ohm
12000Lx
5.9 Ohm
2.0 Ohm
13500Lx
5.0 Ohm
1.7 Ohm
18000Lx
4.0 Ohm
1.4 Ohm
Model
3 Phase Mode, 135 V range
Model
1 Phase Mode, 135 V range
3000Ls-3
18.3 Ohm
3000Ls-1
6.1 Ohm
4500Ls-3
12.2 Ohm
4500Ls-1
4.1 Ohm
6000Ls-3
9.2 Ohm
6000Ls-1
3.1 Ohm
9000Ls-3
6,1 Ohm
9000Ls-1
2.1 Ohm
12000Ls-3
4.6 Ohm
12000Ls-1
1.6 Ohm
13500Ls-3
4.1 Ohm
13500Ls-1
1.4 Ohm
18000Ls-3
3.1 Ohm
18000Ls-1
1.1 Ohm
Table 3-11: Full Load Resistance – Lx Series
Table 3-12: Full Load Resistance – Ls Series
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User Manual Lx / Ls Series II
3.8 Multi-box Configurations (-MB Option)
Multi-box configurations are identical to a two or three box system except each chassis (box)
has its own controller. When connected as a multi-chassis system through the system interface,
the controller in the auxiliary chassis is disabled and the entire system is controller from the
master unit. Operation is identical to a normal multi-box model. E.g. a 9000Lx/2-MB is connected
and operated the same way as a 9000Lx/2. While a 9000Lx/2 will have once chassis with a
blank front panel, a 9000Lx/2-MB will have a controller on both front panels of which only one is
used when configured as a 9000Lx/2. The other controller will display a message indicating it is
operating as an auxiliary unit1.
The benefit of the –MB option is that both units can be separated and operated independently.
To so do, proceed as follows:
1. Turn off both units.
2. Disconnect the output terminals (1,2,3, COM or A,B,C, NEUT) from each other.
3. Disconnect the system interface cable between the two (or three) units.
When powered up, each unit will power up as a stand-alone unit. Connection diagrams for a –
MB system are identical to those for a 9000Lx/Ls/2, 12000Lx/Ls/2, 13500Lx/Ls/2 or 1800Lx/Ls/3.
See section 3.5.3, Figure 3-4 and Figure 3-5 for wiring diagrams.
3.8.1 Adjustment requirements
AC power sources used in a multi-box configuration must be properly adjusted for matched gain
and impedance to ensure correct current sharing between paralleled amplifiers. This adjustment
is done at the factory if the –MB option is specified. The –MB option must be specified at the time
of system purchase.
If units have been acquired individually such as at different points in time or without the –MB
configuration option specified, it may be necessary to balance the amplifiers in order for them to
function at full power in a multi-box configuration. Refer to section 6.6 “Non-Routine Output Gain
Calibration” and section 6.7 “Non-Routine Amplifier Gain Balance Adjustment”
3.8.2 Power Up and Power Down sequence.
A multi-box Lx/Ls system can be turned on in either order. Generally, it is recommended to turn
on the auxiliary unit before turning on the master unit and turn off in the opposite order but no
damage will occur if the order is reversed.
Note: It is not recommended to turn off either unit without turning off the other unit and
then turning it back on. This may result in miscellaneous error messages
occurring on the unit that was not powered down. If one unit has been turned off,
turn off all units first before turning the system back on.
If a master unit is to be used by itself, it is not sufficient to just leave the auxiliary unit off while the
system interface cable remains connected. Disconnect the system interface from the back of the
master unit and then turn the unit on for stand-alone use.
1
This message will disappear when the controls on the auxiliary unit are operated. However, changing settings on
the auxiliary unit controller will not affect the output. Use the master unit controller and or remote control interface to
operate the system.
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User Manual Lx / Ls Series II
3.9 Clock and Lock Mode (-LKM/-LKS Option)
Clock and lock mode operation of two Lx or Ls AC power sources is available only if the –LKM
and –LKS options have been installed at the factory. With these options installed, it is possible to
lock an auxiliary unit (-LKS) to a master unit (-LKM). The master unit controls the frequency. This
configuration can be used to create multiphase power systems such as split-phase or six
phases. The auxiliary unit must be set to external clock mode from the Control screen. See
section 4.2.5.
Two BNC connectors are provided on the rear panel of the Lx/Ls for clock and lock mode. Both
need to be connected between the master and auxiliary unit. On the master unit (-LKM), both are
outputs. On the auxiliary unit (-LKS), both are inputs. Do not connect these BNC‟s between two
master units (-LKM‟s) or damage to the unit could result.
Note: The maximum number of auxiliary units (-LKS) per master (-LKM) is one. No T
connectors are allowed to increase the number of auxiliary units as this may
cause reflections on the clock and lock signals.
Refer to Figure 3-7 for the required connections between the –LKM and –LKS units. The
example is shown for two units, one master, one auxiliary.
WARNING: DO NOT CONNECT THE AC OUTPUTS OF THE –LKM AND –LKS UNITS
TOGETHER. CLOCK AND LOCK OUTPUTS CANNOT BE PARALLELED TO
OBTAIN HIGHER OUTPUT CURRENTS.
Do not use clock and lock mode to obtain higher power capability on the same phase(s). For
higher power configurations, use the multi-chassis configuration through the system interface
connection instead. Refer to section 3.5.3 for multi-chassis configuration and connection
information.
The frequency of the auxiliary unit will track that of the master. The output phase angle of phase
1/A will be locked to the auxiliary unit as well. (See LKM/LKS supplemental specifications for
phase accuracy). This allows split phase or six phase configurations to be created.
3.9.1 Configuration settings
Units configured with the –LKM option will show the Clock as INT (internal) and the mode as
CLK/LOC on the CONTROL screen. Units configured with the –LKS option can be set to INT
(internal) or EXT (external) clock from the CONTROL screen. The MODE setting on the
CONTROL screen of the –LKS unit determines the power on state for the clock setting. When
set to STAN (Stand-alone operation), the unit powers up with INT clock. When set to CLK/LOC
mode, it powers up in EXT clock mode suitable to clock and lock system operation. See section
4.2.5 for details.
3.9.2 Frequency measurements on –LKS units
Lx or Ls models configured with the –LKS option used in a clock and lock configuration will not
accurately measure frequency if the programmed frequency of the master unit (-LKM) exceeds
2000 Hz unless the frequency setting of the –LKS is set to the a value close to the programmed
frequency of the –LKM master unit. Setting the –LKS programmed frequency when it is operating
as a clock and lock auxiliary does not affect its actual output frequency as it is controlled by the
–LKM master unit. This provides the controller with the required information to accurately
measure the frequency.
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User Manual Lx / Ls Series II
FLT INH OUT1 IN1 RPV
TRIGGER
IEEE-488
RS232C
AUX OUTPUT OUTPUT
HI
LO
HI
LO
26VAC
5VAC
Ø1
Ø2
Ø3
COM
SENSE
Ø1
Ø2
Ø3
COM
300 VAC MAX TO
TO MASTER INTERFACE
TO AUXILIARY INTERFACE
CLOCK
LOCK
FLT INH OUT1 IN1 RPV
TRIGGER
RS232C
AUX OUTPUT OUTPUT
HI
LO
HI
LO
26VAC
5VAC
Ø1
Ø2
Ø3
COM
SENSE
Ø1
Ø2
Ø3
COM
300 VAC MAX TO
TO MASTER INTERFACE
TO AUXILIARY INTERFACE
CLOCK
LOCK
EUT1
TERMINAL
BLOCK
LOAD
CLL/LK
MASTER
(-LKM)
CLK/LK
AUXILIARY
(-LKS)
L1 L2 L3 GND
AC SERVICE
ø1
ø2
ø3
COM
SERIAL TAG
L1
L2
L3
INPUT
INPUT
SAFETY
COVER
VOLTAGE INPUT
RATING
SERIAL TAG
L1
L2
L3
INPUT
INPUT
SAFETY
COVER
VOLTAGE INPUT
RATING
EUT2
TERMINAL
BLOCK
LOAD
ø1
ø2
ø3
300 VAC MAX TO
CLK/LK
BNC
CABLES
WARNING:
DO NOT CONNECT
OUTPUTS OF
-LKM & -LKS UNITS
TOGETHER
3.9.3 Lx versus Ls Differences
The Lx and Ls Series differ in how to control the phase angle of phase 1/A. On the Ls series,
setting the phase angle for phase A on the auxiliary unit will result in all three phases of the
auxiliary unit shifting by the same amount. Thus, programming the auxiliary unit to 60° on phase
A will result in a 60 degree offset between the two phase A outputs, B outputs and C outputs.
On the Lx Series, programming phase 1 of the auxiliary unit does not rotate phase B and C on
the auxiliary unit as well. There are two ways to accomplish this:
1. Program all three phases on the auxiliary unit with the same phase offset. Eg. Program
phase 1 to 60°, phase 2 to 300° and phase 3 to 180°.
2. Set the phase 1/A offset calibration coefficient for phase 1/A to the desired offset. This
will rotate all three phases, similar to setting the phase A angle on the Ls Series.
This discrepancy is caused by the requirement to maintain backward compatibility with the
HP6834B, which did not support Clock and Lock capability.
Figure 3-7: Clock and Lock Connections
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User Manual Lx / Ls Series II
3.10 Remote Control Interfaces
Setup and connection information on setting up remote control using either GPIB, RS232, USB
or LAN interfaces is provided in the Lx/Ls Series II Programming Manual P/N 7004-981. This
manual is distributed on the same CD ROM (P/N CIC496) as this user manual. It can also be
downloaded from the AMETEK Programmable Power website (www.programmablepower.com).
Connector pin out information is provided in sections 3.6.6, 3.6.8 and 3.6.9of this manual.
Note: Use of the USB port to control more than one power source from a single PC is
not recommended, as communication may not be reliable. Use GPIB interface for
multiple power source control.
3.11 RPV Input (RPV option)
The –RPV option is factory installed only. If installed, this option disables the internal controller
voltage programming reference. Instead, a user provided DC signal is used to drive all amplifiers.
Note that only one RPV input is available so in three phase modes, all three outputs will track the
same RPV DC input signal.
A 0 to +10 VDC signal will provide a 0 to full-scale voltage output on the selected voltage range.
To enable the RPV mode, press the MENU key until the CONTROL screen and scroll to the ALC
setting entry. If the ALC is set to REG or ON, turn if OFF first. Then scroll to the VOLT REF entry.
Select EXT to use the RPV (remote programming voltage).
The presence of the RPV option is indicated by the –RPV field in the model number on the serial
tag. Note that the –EXT and –RPV options are mutually exclusive so only one or the other can be
present.
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User Manual Lx / Ls Series II
4. Front Panel Operation
4.1 Tour of the Front Panel
Before operating the AC source using the front panel, it helps to understand the operation of the
front panel controls. Specifically, the operation of the knob, keyboard and the menu layout are
covered in the next few paragraphs.
4.1.1 Front Panel Controls and Indicators
Ls Series Keyboard / Display (or –RP option keyboard on Lx Series)
Lx Series Keyboard / Display (or –KP option keyboard on Ls Series)
The front panel can be divided in a small number of functional areas:
Mains circuit breaker
Keyboad/ Display panel:
Status Indicator lights
Shuttle knob(s) (Voltage / Frequency)
Numeric Keypad (Lx only or Ls with –KP option)
LCD display
MENU and CURSOR keys
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User Manual Lx / Ls Series II
4.1.2 System On/Off Circuit Breaker
The circuit breaker located on the top left side of the front panel of the unit and disconnects the
three phase Line input. As such, the circuit breaker acts as a power on/off switch for the Lx
Series unit.
When the input current rating of the Lx/Ls Series AC power source is exceeded or an input over
voltage condition occurs, the circuit breaker will trip.
Note that for multi-chassis systems, it is recommended to turn the Master unit ON first and then
the Auxiliary unit(s). To turn the system off, turn OFF the Auxiliary unit(s) first and then the
Master unit.
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User Manual Lx / Ls Series II
4.1.3 Status Indicator Lights
Eight yellow LED status indicators are located on the left hand side of the keyboard/display
panel. These LED‟s correspond to the following conditions:
Hi RangeThe Hi Range LED is on when the high voltage output range
has been selected.
OvertempThe Overtemp LED indicates an overheating problem inside
the unit. This is an abnormal condition, which will cause the unit
to shut off. Check the air openings to make sure they are not
blocked.
OvercurrentThe Overcurrent LED indicates an output overload condition.
This condition can be controlled by setting the current limit value
in the PROGRAM menu. Removing the load using the OUTPUT
ON/OFF button will recover from an overload condition when in
CV mode.
RemoteThe Remote LED indicates that the unit is in remote control
mode. If the IEEE-488 interface is used, this indicator will be lit
whenever the ATN line (Attention) line is asserted by the IEEE
controller. If the RS232C, USB or LAN 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 power source is disabled. Note: The BACK button
doubles as a GOTO LOCAL button (LOCAL) while the unit is in
remote state. This allows the user to regain control of the front
panel. The LOCAL button can be disabled by sending a Local
Lockout bus command. This prevents unauthorized changes of
settings in ATE applications.
Output on/offThe Output on/off LED indicates the output relay status. If the
LED is off, the output relays for all output phases are open and
the external sense lines are wrapped around internally. If the
LED is on, the output relays are closed and the external sense
lines are connected to the SENSE terminal block.
ØA, ØB, ØCThe ØA, ØB, ØC LED indicates the output phase selection for
either settings or measurements. Phase selection can be
changed using the Phase button to the right of the MEMU keys.
Pressing the Phase button repeatedly will cycle through phase
A, B, C and ALL PHASES. The ØA, ØB, ØC indicators
correspond to outputs Ø1, Ø2 and Ø3 on the Lx Series rear
panel and ØA, ØB, ØC on the Ls Series rear panel respectively.
If all three phase selection LED's are lit, all three phases are
selected and changes made to voltage and current limit settings
will apply to all three phases.
Note that in single phase mode, the ØA LED is always lit and
the Phase button is inactive.
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User Manual Lx / Ls Series II
Counter
Clock
wise
Clock
wise
INCRDECR
4.1.4 The Shuttle Knob(s)
Figure 4-1: Shuttle Knob
Two different style keyboards are available for the Lx/Ls Series. The Ls Series comes standard
with a dual shuttle knob keypad. All data entry is made by using these shuttle knobs. The Lx
Series comes standard (as of Q1-2006) with a numeric keypad and single shuttle. Data entry can
be done either through the 0-9 numeric keypad or using the single shuttle.
The shuttle knob(s) are/is located to the right of the LCD screen and are used to change setup
parameters. Note that it cannot be used to move the cursor position between menu fields. Use
the UP and DOWN arrow keys for this.
The shuttle knob can operate in one of two distinct modes of operation:
MODE DESCRIPTION
IMMEDIATE mode Any time the ENTER key is pressed, the Lx/Ls Series returns to
its normal mode of operation. In this mode, changes made with
the shuttle knob will take immediate effect. The IMMEDIATE
mode is useful for slewing output values such as voltage and
frequency and observing the effect on the load.
SET mode When the Set key is pressed again while the PROGRAM screen
is already displayed, changes made with the shuttle to any
output parameter will not take effect until the ENTER key is
pressed. In this mode, any changes made to a setup menu will
have a blinking cursor to indicate the pending change condition.
This mode allows changes to be made to all output parameters
and executing them all at once by pressing the ENTER key.
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User Manual Lx / Ls Series II
4.1.5 Menu Keys
The Lx/Ls Series is operated through a series of menu's. These menus can be reached by using
a number of menu keys located along the bottom of the LCD display and the UP/DOWN cursors
keys. Several menus have more than two entries. Since the LCD display only has two display
lines, additional entries may not be visible and can be reached only by scrolling up or down using
the UP/DOWN cursor keys. The following menu keys are available:
Figure 4-2: Menu Keys
KEY DESCRIPTION
Set The Set key selects the output setting screen. While this screen
is displayed, the voltage and frequency shuttle knobs can be
used to change voltage and frequency for the selected phase(s).
Additional output settings such as current limit can be reached
by using the down cursor key.
For tests implemented in firmware such as the –160 and –704
options, the SET key can be used to skip to the next test in a
test sequence.
MeasThe Meas key selects the measurement screen for the selected
phase. If all three phases are selected, the measurement data
for phase A will be displayed. There are no user changeable
fields in the measurement screen. The voltage and frequency
shuttles are active while the measurement screen is displayed.
Additional measurement data can be displayed by using the up
and down cursor keys.
MenuThe top level menu is accessed by pressing the Menu key.
Refer to section 4.2 for details on available menus.
EnterThe Enter key is used to confirm selections made in menu's or
to active settings made in SET mode.
BackThe Back key may be used to back up to the previous menu
level or previously selected screen. It can also be used as a
backspace key to delete the last digit entered.
For tests implemented in firmware such as the –160 and –704
options, the BACK key can be used to abort a test in progress.
If the unit is in remote mode, (Remote LED is lit), the front panel
of the power source is disabled. The BACK button doubles as a
GOTO LOCAL button (LOCAL) while the unit is in remote state.
This allows the user to regain control of the front panel. This
LOCAL button can be disabled by sending a Local Lockout bus
command. This prevents unauthorized changes of settings in
ATE applications.
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User Manual Lx / Ls Series II
4.1.6 Cursor Keys
The cursor keys can be used to scroll through a list of menu entries.:
CURSOR UP () The UP key moves the cursor position upwards one position to
the previous available cursor position. If the present cursor
position is at the top of the right hand column, the cursor is
moved to the bottom position of the left hand column. If the
present cursor is at the top of the left hand column, the cursor is
moved to the bottom of the right hand column.
CURSOR DOWN () The DOWN key moves the cursor position downwards one
position to the next available cursor position. If the present
cursor position is at the bottom of the left hand column, the
cursor is moved to the top position of the right hand column. If
the present cursor is at the bottom of the right hand column, the
cursor is moved to the top of the left hand column.
4.1.7 Output on/off Key
The Output on/off key located to the left of the Menu keys may be used to control the state of
the output relays. The active state is indicated by the LED directly above the on/off key. If the
output relays are open (LED is off), the output is floating. The ON/OFF button provides a
convenient way to disconnect the load without having to remove any wires.
4.1.8 Phase Key
The Phase key may be used to select the desired output phase. (ØA, ØB, ØC or Ø1, Ø2, Ø3).
Pressing the Phase button repeatedly will cycle through phase A, B, C and ALL PHASES. The
ØA, ØB, ØC indicators correspond to outputs Ø1, Ø2 and Ø3 respectively.
If all three phase selection LED's are lit, all three phases are selected and changes made to
voltage and current limit settings will apply to all three phases.
Note that in single-phase mode, the ØA LED is always lit and the Phase button is inactive.
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4.1.9 LCD Display
The LCD display of the Lx/Ls Series power source provides information on instrument settings
and also guides the user through the various menus. A sample of the measurement display
screen is shown in Figure 4-3. Due to the two line (x 20 characters) display limitation of the LCD
display, most menus are accessed by scrolling through two or more entries. Alternatively, the
Menu key may be pressed repeatedly to access additional available menu entries.
The active cursor position is indicated by a LEFT POINTING ARROW () and can be moved by
using the UP ()and DOWN () keys located to the right of the LCD display.
Figure 4-3: Measurement Screen
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4.2 Menu Structure
The next few pages show a map of the available menus in the Lx/Ls Series. All menus can be
reached by repeatedly pressing the Menu key. Frequently used menus have a short cut key that
provides direct access. Examples of such menus are Program and Measurements. In any case,
there are never more than two levels of menus although some menus may be spread across
more than one screen.
4.2.1 Power on screens
At initial power up, the Lx/Ls Series power supply will display important configuration information
in a series of power on screens. These displays are only visible for a short period of time and will
not re-appear until the next time the unit is turned on.
There are three screens that will appear in the same order:
1. LANetwork detection... At power up, the unit will try to detect a LAN interface. If not found, a
“LAN not available” message will appear. The LAN will not be detected if:
1. No –LAN option is installed.
2. The USB port is connected to a computer.
3. The RS232 port jumper is installed.
This process may take several seconds.
2. Company and firmware information. Displays the manufacturer (Cal Inst., which is short for
California Instruments and the firmware part number and revision. The firmware part number
starts with CIC followed by a three-digit code and dash number. The firmware revision has a
major revisions before the decimal point and a minor revision after the decimal point.
3. Model and Serial number information. The model will be a function of the configuration and
will include the series designation (LX). The serial number is a 5 digit number. This number
should match the model type sticker located on the back of the unit.
4. Memory test result. If all internal controller memory devices pass the power-on memory test,
the message "MEMORY TEST PASSED" will appear. If any part of the internal self-test fails,
an error message will be displayed instead. This information may be useful when calling in
for service support.
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ENTRY
DESCRIPTION
PROGRAM
The PROGRAM menu allows primary output parameters such as
voltage, frequency, current limit, waveform shape and voltage
range to be changed.
CONTROL
The CONTROL menu allows secondary setting parameters such
as sense mode, phase mode and ALC mode to be changed.
MEASUREMENTS
The MEASUREMENT screen is not a menus in that no user entries
are required. It displays read-back data.
TRANSIENTS
The TRANSIENTS menu allows output transients to be
programmed.
REGISTERS
The SETUP REGISTERS menu allows complete instrument
settings and transient list programs to be saved to nonvolatile
memory.
CONFIGURATION
The CONFIGURATION menu allows changes to be made to
configuration settings such as the IEEE-488 address, RS232C or
USB/LAN internal baudrate, LAN settings, power on state and
Master/Auxiliary control mode.
OUTPUT CAL
The OUTPUT CAL menu provides access to the LCD viewing
angle and Calibration password entry. If the correct calibration
password is entered, additional Calibration screens can be
accessed.
MEAS CAL
The MEAS CAL menu allows for calibration of the AC source
measurement system.
APPLICATIONS
The APPLICATIONS menu provides access to the optional
firmware application programs that may be installed in the Lx/Ls
Series AC source.
Once the power on sequence is completed, the power source will always revert to the
PROGRAM screen shown here.
The power source is now ready to be used.
4.2.2 Top Level Menus
The following top-level menu choices can be accessed using the Menu key:
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OPTIONS
The OPTIONS menu provides access optional functions that may
be present on the Lx/Ls unit.
ETIME/TEMP
The ETIME/TEMP screen displays the Elapsed time (Time the unit
has been in operation) in hours, minutes and seconds. It also
displays the internal temperature of the unit in degrees Celsius.
LIMITS
The LIMITS screen display the hardware configuration limits of the
AC power source. It is for display purposes only and the user can
change none of these fields.
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Lx/Ls Series
Menu Structure
LEVEL 1
LEVEL 2
LEVEL 1
LEVEL 2
PROGRAM
VOLT 120.0V
REGISTERS
SAVE REG #
CONTROL
FREQ 400.0HZ
CONFIGURATION
RECALL REG #
VRANGE 150.0V
ADDRESS 01
PHASE 0.0°
BAUD RATE 38400
FUNC >SINUSOID
PON REG RST
CLIP THD 10.0
CONTROL MASTER
CURR 24.34A
LANGUAGE SCPI
OL MODE CV
SENSE INT
LANetwork <
SYNC INT
CLOCK INT
-LAN option only
IP Address NC
MODE STAN
(FW 1.33+)
100.10.1.87
ALC STATE ON
MAC Address
VOLT REF INT
0:20:4A:9A:02:FD
NO OUTP THREE
GWAddress NC
ST PHASE RAND
100.10.1.1
HostBits 8 NC<
Port No 5025
MEASUREMENT
100.00V 2.349A
OUTP CAL
VIEW ANGLE -5
TRANSIENT
400.0HZ 234.9W
MEAS CAL
CAL PWORD 100
238.7VA 1.00Cf
VOLT F/S 450
2.349Ap 0.98Pf
PHASE OFST 1.0
0.18%A 10.559A
MVOLT F/S 11OO
0.19%V 120.0°
MCURR F/S 1200
TRAN ST IDLE
APPLICATIONS
MIL704 ON
COUNT 10
OPTIONS
DO160 N/A
TRIG SOUR IMM
MS704 N/A
TRAN STEP AUTO
4.2.3 Menu Tree
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VOLT #12 120.0
LANGUAGE ON
VSLEW #12 1e+06
ADVANCE ON
MODE ON
FREQ #12 400.0
CLOCK/LOC N/A
FSLEW #12 10.00
MIL704 ON
FUNC #12 0
DO160 N/A
PAUSE#12 0.0
MS704 N/A
CURR #12 20.0
ABD ON
PHASE#12 0.0
ETIME/TEMP
ETIME 21:20:03
DWELL #12 10.00
LIMITS
TEMP 25:33°C
TTLT #12 ON
LIM LVOLT 150.0V
HVOLT 300.0V
Pwr on Screens
#1
CAL. INST.
LIM LFREQ 45.00HZ
CIC674-1,Rev1.33
HFREQ 1200HZ
#2
MODEL 4500LX
CURR 10.00A
SERIAL #12345
PHASE(C) 120.0
#3
Memory test passed
Table 4-1: Menu Tree
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ENTRY
DESCRIPTION
VOLTAGE
Programs the output voltage in Vrms. The voltage can be changed
from 0 to its max range value as determined by the configuration
settings and the selected voltage range using the Voltage shuttle.
FREQ
Programs the output frequency The frequency can be changed from
its min to its max value as determined by the configuration settings
using the Frequency shuttle.
VRANGE
Selects 150V or 300V voltage range (if available). The actual range
values may be different depending on the configuration. The value of
this field can be changed with either Voltage or Frequency shuttle as
long as the active pointer () points to the VRANGE entry. If only
one voltage range is available, this field cannot be changed.
PHASE
Selects the phase angle between the external clock and the output
of the AC source. If the clock source is internal, this parameter has
no effect.
FUNC
Selects the waveform for the selected phase. Available choices are
SINE, SQUARE and CLIPPED or any user defined waveform that
was downloaded to the AC source waveform memory using the
IEEE-488, LAN, RS232C or USB interface.
CLIP LEVEL
Sets the clip level for the CLIPPED sine wave in percent VTHD. The
range is 0 to 20 %.
CURR
Sets the current limit value for the current detection system. When
the load current value exceeds the set current limit, a fault condition
is generated. The actual response of the AC Source to a current limit
fault is determined by the protection mode selected in the OL MODE
field. (CC = Constant Current, CV = Constant Voltage).
OL MODE
Sets the current limit over load mode. The actual response of the AC
Source to a current limit fault is determined by this setting. Available
settings are CC for Constant Current mode or CV for Constant
Voltage mode. In CV mode, the AC source output will trip off and
4.2.4 PROGRAM Menu
Figure 4-4: PROGRAM Menu
The PROGRAM menu is shown in Figure 4-4. It can be reached in one of two ways:
1. by selecting the Menu key, selecting the PROGRAM entry and pressing the Enter key.
2. by pressing the Set key.
The PROGRAM menu is used to change primary output parameters. Less frequently used
parameters are located in the CONTROL menu.
The following choices are available in the PROGRAM menus:
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ENTRY
DESCRIPTION
stay off until re-engaged. In CC mode, the voltage will be reduced to
maintain the set current level.
ENTRY
DESCRIPTION
SENSE
Selects internal or external remote sense mode. If INT is selected,
the voltage is sensed at the output terminal block. If EXT is selected,
the voltage is sensed at the external sense connector. If external
sense is selected, care must be taken to connect the external sense
lines at the load. For sense leads longer than 1 meter, twisted pairs
should be used.
SYNC
Selects the external sync mode if available. Default is internal sync,
which means a free running time base. The timebase can be
synchronized to either the AC line frequency (-LNS option) or an
external sync signal (-EXS option) depending on the installed option.
CLOCK
Selects internal or external clock source. The Lx/Ls Series controller
uses an open-air crystal time base with an accuracy of 100 ppm. The
external clock mode is used to support the –LKS option. For use as
an auxiliary unit in a clock and lock system, this field must be set to
EXT. A unit with –LKS option can be used stand-alone if needed by
setting the INT clock mode.
INT
Default, internal clock.
EXT
Auxiliary unit (-LKS) driven by master (-LKM) clock
input.
Note: When selecting EXT mode, make sure the
Clock and Lock BNC cables are connected to the
Master (-LKM) unit. If not, there will be no output on
the –LKS unit. See section 3.9 for connection
information.
4.2.5 CONTROL Menus
Figure 4-5: CONTROL Menus
The CONTROL menu is shown in Figure 4-5 and can be reached by selecting the Menu key,
selecting the CONTROL entry using the DOWN cursor key and then pressing the Enter key.
The CONTROL menu is used to change secondary output parameters. The following choices are
available in the CONTROL menus:
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ENTRY
DESCRIPTION
MODE
Power on clock mode. The following two modes can be selected.
STAND
Power up in INT (internal) clock mode for standalone operation. This is the only mode for Lx/Ls unit
without the –LKS option.
For units with the –LKM option installed, this field is
fixed to CLK/LOCK.
For units with the –LKS option installed, this field can
be changed to CLK/LOCK for use as an auxiliary
unit in a clock and lock system or to STAND for use
as a stand alone unit.
CLK/LOCK
Fixed on master (-LKM) unit configuration in a clock
and lock system. Power up with EXT (external) clock
mode on unit with –LKS option. (See OPTION menu
section.).
Note that this field cannot be changed if the –LKM
option is installed.
The frequency resolution below 81.9 Hz in MAST
clock and lock mode is reduced to 0.1 Hz from the
normal 0.01 Hz.
If the –HF option is installed, frequency resolution on
the –LKM unit is fixed at 1 Hz.
ALC STATE
Sets the Auto Level Control (ALC) mode. This mode uses the
internal measurement system to zero regulate the output. There are
three modes of operation:
OFF No measurement based output regulation.
REG Output regulation is enabled. AC source will continuously
regulate output but will not trip off output. (Note: This mode
requires firmware revision 0.98 or higher).
ON Output regulation is enabled and output will fault (trip off)
with Error 801 “Output Voltage fault” if regulation cannot be
maintained and the programmed output voltage is 10Vrms or
higher. No error is generated for settings below 10 volt.
In most situations, the ALC mode should be set to REG or ON for
optimal performance.
Note: The ALC mode only functions for programmed output voltages
above 5 Vrms.
VOLT REF
Selects internal or external voltage programming. Select INT for
programming of voltage from the front panel or over the bus. Select
EXT to use the RPV. The RPV input expects a 0 to +10 Vdc signal
for 0 to full-scale AC output voltage.
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NO OUTP
Selects SINGLE or THREE phase mode of operation. In SINGLE
phase mode, all current is delivered to the ø1 and COM terminals of
the OUTPUT terminal block.
Note that even in SINGLE phase mode, a voltage is present at ø2
and ø3 terminals. Connect only a single phase load when operating
in single phase mode.
ST PHASE
Selects the start phase angle for output changes made to either
voltage or frequency. This allows changing the output at a specific
phase angle. The Output on/off key also uses this phase angle
setting to program the output voltage up to the set level after the
output relay is closed. The default value for this field is RAND. To set
the start phase angle, set the cursor to the ST PHASE field and use
either shuttle knob to adjust between ± 360°. To set to RAND, use
the BACK key.
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ENTRY
DESCRIPTION
MEASUREMENTS 1
VOLTAGE
This value is the true rms output voltage measured at the voltage
sense lines.
CURRENT
This value is the true rms output current drawn by the load.
FREQ
The output frequency is measured at the sense lines.
For Lx/Ls units with –LKS option, see note below.
POWER
This value is the real power.
MEASUREMENTS 2
VA POWER
This value is the apparent power.
PEAK CURRENT
This is the instantaneous peak current.
POWER FACTOR
This readout shows the power factor of the load.
CREST FACTOR
This readout displays the ratio between peak current and rms
current.
MEASUREMENTS 3
VOLT THD
This readout displays the total voltage distortion for the selected
phase. The distortion calculation is based on the H2 through H50
with the RMS voltage in the denominator. Note that some definitions
4.2.6 MEASUREMENTS Screens
The Lx/Ls Series uses a DSP based data acquisition system to provide extensive information
regarding the output of the Source. This data acquisition system digitizes the voltage and current
waveforms and calculates several parameters from this digitized data. The results of these
calculations are displayed in a series of measurement data screens. A total of three
measurement screens are used to display all this information.
Figure 4-6: MEASUREMENT Screen
The three Measurement screens available on the Lx Series are not menus in that no changes
can be made anywhere. Instead, these three screens provide load parameter readouts. The
measurement screens can be reached by successively pressing the Meas key, which will toggle
to all available screens. For Ls Series, only the first two screens are available unless the –ADV
option is installed.
In three-phase mode, measurements are available for each phase individually. To select the
desired phase, use the PHASE key to toggle through phase A, B, C, or ABC. The ABC mode
displays the data for phase A only.
The following parameters are available in the measurement screens:
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ENTRY
DESCRIPTION
of THD use the fundamental component (H1) of the voltage as the
denominator.
Lx/Ls units with firmware revision 0.88 or higher can be programmed
to use the fundamental component as the denominator. This mode
can only be programmed over the bus by sending the
“MEAS:THD:MODE FUND” command. At power up or after a reset
command, the mode will revert back to RMS.
CURR THD
This readout displays the total current distortion for the selected
phase. The distortion calculation is based on the H2 through H50
with the RMS current in the denominator. Note that some definitions
of THD use the fundamental component (H1) of the current as the
denominator.
Lx/Ls units with firmware revision 0.88 or higher can be programmed
to use the fundamental component as the denominator. This mode
can only be programmed over the bus by sending the
“MEAS:THD:MODE FUND” command. At power up or after a reset
command, the mode will revert back to RMS.
PEAK CURR
This readout reflects the peak current value detected at the output.
To measure inrush current for a unit under test, open the output
relay and reset the peak current value using the PEAK CURR
RESET entry. Then program the output voltage and frequency and
turn on the output relay. The peak current measurement will
continuously track the maximum current value detected until reset.
PHASE
Relative voltage phase angle measurement with respect to phase A.
Update Program Functions from Measurement Screen
The Shuttles can be used to update voltage and frequency settings from the measurement
screen. While the measurement screens is visible, the Voltage and Frequency shuttle continue
to operate.
Frequency measurements on –LKS units
Lx or Ls models configured with the –LKS option used in a clock and lock configuration will not
accurately measure frequency if the programmed frequency of the master unit (-LKM) exceeds
2000 Hz unless the frequency setting of the –LKS is set to the a value close to the programmed
frequency of the –LKM master unit. Setting the –LKS programmed frequency when it is operating
as a clock and lock auxiliary does not affect its actual output frequency as it is controlled by the
–LKM master unit. It does provide the controller with the required information to accurately
measure the frequency.
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ENTRY
DESCRIPTION
TRAN ST
Indicates the status of the transient system. Available modes of
operation are:
IDLE
Transient system is in IDLE or inactive state. To start
a transient list, press the ENTER key while on the
TRAN STATE field. Note that the output must be ON
to run a transient program or an error message will
be displayed.
WTRIG
Transient system is armed and waiting for a trigger
event.
BUSY
Transient system is active. A transient list execution
is in progress.
COUNT
Sets the execution count for the transient system. A count of 1
indicates the transient will run 1 times. The count value can be set
with either voltage or current knob while the cursor is on this field.
The count range is from 1 through 2E+08. Values below 200,000
are displayed in fixed point notation. Value higher than 200,000 are
displayed as a floating point number (2E+05). The display has
insufficient characters to display the entire mantissa so entering
values above 2E+05 from the keyboard is not recommended.
TRIG SOURCE
Indicates the trigger source for transient system. Available trigger
sources are:
IMM
Immediate mode. The transient is started from the
front panel using the ENTER key.
4.2.7 TRANSIENT Menu
The transient menu is used to program and execute user-defined output sequences. These
output sequences are defined as a sequential list of voltage and/or current settings that can be
executed in a time controlled manner.
Each step in these lists is assigned a sequence number ranging from #0 through #99. The
numbering determines the order in which each step is executed.
Each step can control the voltage setting, voltage slew rate, frequency setting, frequency slew
rate and dwell time. The dwell time determines how long the output dwells at the current step
before progressing to the next step. Dwell times can range from 1 msec up to 900000 secs.
Transient lists can be set up from the front panel or over the bus. The transient list can be saved
with the rest of the front panel settings in one of the setup registers. (See Register Menu).
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ENTRY
DESCRIPTION
BUS
Bus mode. The transient system is started by a bus
command or a group execute trigger (GET).
EXT
External mode. The transient system is started by a
user-provided external TTL trigger signal on
TRIGGER IN1.
TRAN STEP
Indicates the transient system execution mode. Available modes
are:
AUTO
When triggered, the transient system will
automatically execute each list point sequentially
without waiting for a trigger between list points. This
execution is paced by the dwell time set for each
data point.
ONCE
When triggered, the transient system will execute
the first list point and wait for a new trigger once the
dwell time expires. This allows triggered execution of
each step in the transient list.
List parameters:
VOLT
Step #
Voltage set point
VSLEW
Step #
Voltage slew rate in V/sec
FREQ
Step #
Frequency set point
FSLEW
Step #
Frequency slew rate in Hz/sec
FUNC
Step #
Waveform selection. Available choices are Sine,
Square, Clipped or any of the user provided
waveforms in waveform memory.
PAUSE
Step #
Delay
CURR
Step #
Current set point
PHASE
Step #
Phase angle set point. (Not relevant for phase A if
clock mode is internal.)
DWELL
Step #
Dwell time in seconds.
Range is 0.001 to 900000
TTLT
Step #
ON: Generates an output trigger pulse at this list
step.
OFF: No output trigger.
The output trigger is available on the TRIG OUT1
SMC connector on the rear panel.
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Transient List points data entry method.
Transient list points are numbered sequentially from 0 through 99 and executed in this order.
Each list point or list entry has 6 parameters as shown in the table above. To enter list point data,
the right hand knob (Frequency) is used to increment or decrement the parameter value. The
left-hand knob (Voltage) is used to increment or decrement the list point sequence number (#).
The sequence number can only be increased to the next available empty (new) list point.
To move to the next or previous parameter, use the UP () or DOWN () cursor keys
The voltage and frequency slew parameters can be set to their maximum slew rates by turning
the Frequency knob counter clock-wise past 0. This will cause the slew parameter to 'wrap
around' to its maximum available value.
It is not necessary to use all list points, only as many needed to accomplish the desired output
sequence.
Setting Data Values
Data values can be set for each point in a list. If all data values in a specific list are going to be
the same value (e.g. the current limit parameter is set to the same value for the entire transient
program), only the first data value for that parameter has to be set. Setting only the first data
point will automatically repeat that value for all subsequent points in the transient list.
Setting Slew Rates
Very often, output changes must be done as fast as the power source can make them. This
means the transient list slew rate is set to its maximum value. If this is the case for all the data
points in the list, it is sufficient to set just the first data point's slew rate for either voltage and/or
current. Setting only the first point of any parameter in the list will automatically cause all points
for that parameter to be set to the same value. This saves a lot of data entry time.
If however, one or more data points require a specific slew rate such as needed to do a ramp, all
other points have to be specifically set to their required slew rates, including the maximum slew
rate.
Saving Transient Lists
Once completed, a transient sequence can be saved along with the steady state setup of the
instrument by using the REGISTER, SAVE menu. Registers that may be used for this purpose
are 1 through 15. It is advisable to do so, especially for longer transient lists.
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ENTRY
DESCRIPTION
SAVE
REG 0 – 7
Saves the selected setup and transient list from
memory. (Setup only for Reg 0) The left knob
(Voltage) may be used to scroll through the
available list of setup register numbers.
Use the ENTER key to perform the save
operation.
Register 0 can be assigned as the power-on state
setup from the CONFIGURATION menu. A valid
setup must be saved in REG0 to do so.
Note that REG0 only saves the setup, not the
transient list. All other registers also save the
transient list.
RECALL
REG 0 – 7
Recalls the selected setup and transient list to
memory. (Setup only for Reg 0) The left knob
(Voltage) may be used to scroll through the
available list of setup register numbers.
Use the ENTER key to perform the recall
operation.
Register 0 can be assigned as the power-on state
setup from the CONFIGURATION menu. A valid
setup must be saved in REG0 to do so.
Note that REG0 only saves the setup, not the
transient list. All other registers also save the
transient list.
4.2.8 REGISTERS Menu
The registers menu provides access to the non-voltage setup storage of the power source. A
total of 8 front panel setups can be stored in registers numbered from 0 through 7. Each register
except register 0 can hold the complete front panel setup, including the programmed transient
list. This allows for quick recall of different setups and transient programs.
Register 0 is reserved to be used as the power-on setting as assigned by the user. To have the
power source start in a specific setting, save the desired setting to Register 0 and assign register
zero as the power-on default in the CONFIGURATION menu. Alternatively, the Lx/Ls can be set
to power up with the RST factory default settings. See 4.9 for factory default settings.
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DESCRIPTION
ADDRESS
0 - 31
Sets the selected IEEE / GPIB bus address for the
optional IEEE/GPIB interface.
Factory default is address 1. The left knob
(Voltage) can be used to scroll through the 0
through 31 address range. Do not use address 0 as
this address is typically reserved for the GPIB
controller.
BAUD RATE
9600
19200
38400
57600
115200
230400
460800
Sets the baud rate for the RS232C serial
communications port. The same setting applies to
the internal baud rate used to interface with the
USB and LAN interface of the power source.
Factory default is 38400 baud. Available settings
are 9600 through 460800 baud for RS232C.
Note: For USB use, you must set the baud rate to
460800. For LAN use, any baud rate can be used
but 460800 is recommended.
Either shuttle knob can be used to scroll through
these selections.
POWER ON
REG0
RST
Selects either non-volatile REG0 to be recalled
automatically at power-on or factory default (RST).
Factory default is RST, which recalls the factory
settings.
Note that to use REG0 for power-on default, the
contents of the register must be programmed first.
See section 4.2.8. If an empty register is selected,
the power source will revert back to RST (factory
setting).
CONTROL
MASTER
AUX
This is an information-only field that displays the
controller operation mode. For a single stand-alone
Lx/Ls unit, the mode is always MASTER.
Alternatively, the auxiliary mode may be detected if
the system interface cable at the rear panel is
plugged in and connected to another Lx/Ls unit. In
AUX mode, the AC source is controlled by another
4.2.9 CONFIGURATION Menu
The configuration menu may be used to configure various aspects of the instrument such as the
serial port, IEEE-488/GPIB address and the power-on settings of the supply.
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DESCRIPTION
unit (Master unit). The controller will be disabled
and has no control over the amplifiers, the
measurements or any other function. A message
will be displayed at power indicating it is in Auxiliary
mode. You can press any key to get in the menus
but no control is possible.
LANGUAGE
SCPI
APE
ABLE
The standard bus syntax used by the Lx/Ls Series
is the Standard Commands for Programmable
Instruments (SCPI).
If an alternative syntax such as APE (Abbreviated
Plain English) or ABLE (Atlas Based Language
Extensions) is available, it can be selected from this
menu. The APE and ABLE languages are part of
the Ls Series –GPIB option. Once set, the selected
language will remain in effect until changed in this
menu or over the bus.
LANetwork1
LAN
If the –LAN option is installed; pressing Enter while
the cursor is on the LANetwork entry provides
access to the LAN interface setting screens listed
below.
IP Address
Displays the IP address setting. This value can be
changed by pressing the SET key and entering a
new value from the keypad or using the Voltage
and Frequency shuttles. Use the numeric data pad
or the voltage shuttle to enter each field. To move
between the four fields, use the decimal point key
on the keypad or the Frequency shuttle.
To set a fixed IP address, press SET and enter the
desired IP address. To set the unit to Dynamic Host
Configuration Protocol (DHCP) mode, press SET
and enter all zeros (0.0.0.0) as the IP address and
cycle power two times. The obtained IP address will
be displayed after the second power on. For the
DHCP setting to work however, the unit MUST be
connected to a network with a DHCP server.
Any change to this value will NOT take effect until
after power on the unit has been cycled.
When changing mode from static IP to DHCP, it is
necessary to cycle power on the unit twice, once to
change mode and again to obtain and display a
new IP address from the network.
MAC Address
Displays the network Media Acces Control address.
This value is fixed and cannot be changed. The
same MAC is normally printed on the model serial
tag. The MAC address is shown as six hexadecimal
numbers separated by a colon, e.g.
00:20:4A:9A:02:FD. Note that the leading „0‟ is
1
This feature requires firmware revision 1.40 or higher. If you upgraded from a lower firmware revision, the LAN configuration has
to be enabled to display this menu. Contact customer service for information on enabled this screen.
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ENTRY
DESCRIPTION
never visible due to the maximum number of LCD
characters per line.
Note: If the MAC Address displayed is corrupted or
does not match the serial tag, there may have been a
problem retrieving the LAN port settings. This can
happen if a static IP was set that conflicts with
another device on the network. To recover, turn on
power to the unit while holding down the SET key.
This will allow the unit to boot without attempting to
collect the IP settings. You can then set the required
IP values. [See IP Address above].
GWAddress
Gateway address setting. A default gateway is a
node (a router) on a computer network that serves
as an access point to another network.
This value can be changed by pressing the SET
key and entering a new value from the keypad or
using the Voltage and Frequency shuttles. Use the
numeric data pad or the Voltage shuttle to enter
each field. To move between the four fields, use the
decimal point key on the keypad or the Frequency
shuttle.
Any change to this value will NOT take effect until
after power on the unit has been cycled.
HostBits
Number of host bits as opposed to network bits in
network mask. A CIDR class C network uses 24
network bits and 8 host bits. (Class A = 24, Class B
= 16).
This value can be changed by pressing the SET
key and entering a new value from the keypad. Any
change to this value will NOT take effect until after
power on the unit has been cycled.
Port No
TCP remote port number. This value must be set to
5025 (SCPI) to support the built in web page.
This value can be changed by pressing the SET
key and entering a new value from the keypad. Any
change to this value will NOT take effect until after
power on the unit has been cycled.
LAN Default
LAN default setting can be achieve by selecting the
Mac address screen and press the set key followed
by the Enter key. Press the Enter key again to
confirm. The IP address is set to DHCP or AUTO
IP.
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ENTRY
DESCRIPTION
VIEW ANGLE
-10 to +10
LCD viewing angle adjustment.
CAL PWORD
V range
Calibration password required to access all
calibration screens. The calibration password
is the high voltage range value. [300 ] The
password can be entered using the Voltage
shuttle followed by the ENTER key.
Measurement Calibration Screens
MVOLT F/S
± 9999
Calibration coefficient for full-scale voltage
measurement.
MCURR F/S
± 9999
Calibration coefficient for full-scale current
measurement.
Output Calibration Screens
VOLT F/S
± 9999
Calibration coefficient for full-scale voltage
output. (calibrated by measurement)
CURR F/S
± 9999
Calibration coefficient for full-scale current
ouptut. (calibrated by measurement)
4.2.9.1 CALIBRATION Menus
The measurement calibration menu can be used to perform routine calibration of the internal
measurement system. The recommended calibration interval is 12 months. To enter the
calibration screens, the calibration password must be entered first.
Note: Refer to chapter 6 for details on routine calibration procedures and equipment
requirements. Do not attempt calibration without consulting the user manual.
This menu also contains the LCD viewing angle adjustment.
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User Manual Lx / Ls Series II
ENTRY
DESCRIPTION
LANGUAGE
N/A
Standard SCPI command language.
ON
Ls Model may be equipped with the APE
(Abbreviated Plain English) and ABLE (Atleas
4.2.10 APPLICATIONS Menu
The Applications menu provides access to application specific firmware functions if available.
Note that there may be no applications installed in which case this screen will still be shown but
has no function.
Possible applications are DO160 and MIL704. To access either of the application screens,
position the cursor on the APPLICATIONS entry and press the ENTER key. Select the desired
application and press ENTER.
For information on using these applications, see sections 8 and 9.
4.2.11 OPTIONS Menu
The Options menu provides access to available optional features. Note that there may be no
options installed in which case this screen will still be shown but has no function. The option
settings are protected and cannot be changed by the user. These screens are provided for
information purposes only.
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User Manual Lx / Ls Series II
ENTRY
DESCRIPTION
Based Language Extensions) language
options for backward compatibility with
California Instrument‟s L Series AC power
source or Elgar PIP9023 controllers.
If installed, the language mode can be
selected over the bus or from the
CONFIGURATION screen. (see section
4.2.9).
ADVANCE
ON
Standard on all Lx Series models.
N/A
This feature is optional on Ls Series models. If
installed, this field will display ON. If not, N/A is
shown instead.
MODE
ON
Standard on all Lx Series models. Allows the
output to be switched between single and
three phase modes of operation.
N/A
This feature is optional on Ls Series models. If
installed, this field will display ON. If not, N/A is
shown instead.
CLOCK/LOC
N/A
Clock and lock is an option. If no –LKM option
is installed, this field will show N/A.
MAST
-LKM Option installed. The unit can be used
as a Clock and Lock system master or stand
alone.
AUX
-LKS option installed. The unit can be used as
a Clock and Lock system auxiliary or stand
alone.
ENTRY
DESCRIPTION
ETIME
01:23:45
The ETIME field displays the total
accumulated elapsed time for the instrument
since it's initial manufacture. This value cannot
be changed or reset.
4.2.12 Elapsed Time and Temperature Screen
The Etime/Temp screen displays the elapsed time since the power source has first been turned
on. This is an accumulated total time in hours, minutes and seconds.
The same screen also displays the internal temperature of the power supply.
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User Manual Lx / Ls Series II
ENTRY
DESCRIPTION
TEMP
37.342°
The TEMP field is not a user selectable
parameter but rather a read-out of the internal
temperature in degrees Celsius. It is provided
for informational purposes only.
ENTRY
DESCRIPTION
LIM LVOLT
Low Voltage
Range
Displays maximum available output voltage in
the low voltage range.
HVOLT
High Voltage
Range
Displays maximum available output voltage in
the high voltage range.
LIM LFREQ
Low Frequency
Limit
Displays minimum available output frequency.
HFREQ
High Frequency
Limit
Displays maximum available output frequency
CURR
C range
Displays maximum available current in low
voltage range and single phase mode. If only 2
or 3 phase mode is available, this value is the
maximum available current per phase.
PHASE (C)
Phase Setting
Displays phase angle for phase C. Valid values
are 120 for three phase or mode configuration,
0 for single phase only configuration. Any other
value indicates split (2) phase configuration.
4.2.13 LIMIT Menu
The Limit menu displays the maximum available value for voltage, frequency and current range
of the power supply. This screen is used for information only and contains no user changeable
fields. The limit values shown cannot be changed.
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User Manual Lx / Ls Series II
Counter
Clock
wise
Clock
wise
INCRDECR
Counter
Clock
wise
Clock
wise
INCRDECR
4.3 Output Programming
4.3.1 Set the Output
Output parameters are all set from the PROGRAM screen.
1. Use the MENU key and select the PROGRAM entry.
2. Press the ENTER key to bring up the PROGRAM menu.
or
2. Use the PROG key to directly bring up the PROGRAM menu.
There are two methods for programming output parameters:
IMMEDIATE mode
SET mode
4.3.2 Slewing Output Values with the Knob in IMMEDIATE Mode
The default mode of operation is an immediate mode in which changes to output parameters
made with the knob or the entry keypad are immediately reflected at the output.
To change the output voltage:
1. Place the cursor on the VOLT entry
2. Rotate the shuttle knob clockwise to increase the value, counterclockwise to decrease the
value or use the Keypad to enter a value and press the Enter key.
These changes take effect immediately.
To change the output frequency:
1. Place the cursor on the FREQ entry
2. Rotate the shuttle knob clockwise to increase the value, counterclockwise to decrease the
value or use the keypad to enter a value and press the Enter key.
These changes take effect immediately.
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User Manual Lx / Ls Series II
Counter
Clock
wise
Clock
wise
INCRDECR
4.3.3 Change Output Values with the Knob in SET Mode
The SET mode of operation is a mode in which changes to output parameters made with the
knob or the entry keypad do not affect the output until the Enter key is pressed. The AC source
is put in this SET mode by pressing the Set key twice. A blinking cursor indicates SET mode is
active.
To change the output voltage:
1. Press the Set key twice
2. Place the cursor on the VOLT entry
3. Rotate the Voltage knob clockwise to increase the value, counterclockwise to decrease the
value
4. A blinking underline cursor will appear in the data for the VOLT field to indicate a change in
settings but the output remains unchanged.
5. Place the cursor on the FREQ entry
6. Rotate the Frequency knob clockwise to increase the value, counterclockwise to decrease
the value
7. A blinking underline cursor will appear in the data for the FREQ field to indicate a change in
settings but the output remains unchanged.
8. Press the Enter key.
Both new voltage and frequency output values are now present at the output. The unit has
returned to immediate mode of operation until the Set key is pressed again.
Note that output settings such as voltage and frequency can be changed from the measurement
screen as well. If all three phases are selected, slewing the Voltage knob will change the output
voltage on all three phases. If only one phase is selected, only the output of the selected phase
will be affected.
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User Manual Lx / Ls Series II
4.4 Waveform Management
The Lx Series employs independent arbitrary waveform generators for each phase. This allows
the user to create custom waveforms. In addition, three standard waveforms are always
available. This chapter covers issues that relate to defining, downloading and managing custom
waveforms.
Ls Series model only support arbitrary waveform generation if the –ADV option is installed. If not,
you can skip forward to section 4.5 as the next sections do not apply.
4.4.1 Standard Waveforms
For most AC applications, a sine wave shape is used. The sine wave is one of the standard
waveforms provided on all Lx Series models. This standard sine wave is always available and is
the default waveform at power-on. Two more standard waveforms are available, square and
clipped.
Figure 4-7: Selecting a Waveform
The square wave provides a high frequency content waveform with relative fast rise and fall
times. Due to AC amplifier bandwidth limitations, the frequency content of the standard square
wave has been kept within the amplifier‟s capabilities. As the fundamental frequency is
increased, the relative contribution of higher harmonics is reduced.
The clipped sine wave may be used to simulate voltage distortion levels to the unit under test.
The total harmonic distortion level may be programmed in percent using the CLIP LEV field
directly below the FUNC entry.
Note that changing the distortion level of the clipped waveform forces the AC source to
regenerate the clipped sine wave‟s data points and reload the waveform register with the newly
requested data. This process requires the output to be dropped briefly. To avoid interrupting the
voltage output to the unit under test, set the clip level needed before closing the output relay and
do not change it while the EUT is under power. You can then toggle between the clipped sine
wave and any other waveform in memory without interrupting the output.
4.4.2 Phase Selection
Figure 4-8: Selecting Waveforms for Single Phase or All Phases
Different waveforms may be selected for each phase. The number of custom waveforms from
which to select remains 50 but each phase can be assigned a different custom or standard
waveform. The specific output phase for which the wave shape is programmed is selected with
the Phase key on the front panel. To select the same wave shape for all three phases in a three-
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User Manual Lx / Ls Series II
phase configuration, press the Phase key until all phase enunciators (øA, øB and øC) are lit.
Waveform selections made in this mode will apply to all three phases.
4.4.3 Creating Custom Waveforms
The Lx controller supports up to 50 user defined waveforms in addition to the 3 standard
waveforms. Custom waveforms cannot be created from the front panel of the Lx Series. Rather,
they have to be downloaded through the IEEE-488, RS232C, LAN or USB interface.
Each waveform is defined by 1024 data points. Each data point can range between –1 and +1
(floating point number). See Lx Series programming Manual (P/N 7004-961) for details on
downloading waveforms.
Once downloaded, waveforms remain in non-volatile memory and will be visible in the
WAVEFORMS menu for selection. The user can assign a 12-character name to each custom
waveform. Avoid using any of the standard waveform names (SINE, SQUARE or CLIPPED) as
these names will not be accepted.
Waveforms may be deleted using the IEEE-488, RS232C, LAN or USB interface as well. Custom
waveforms cannot be deleted from the front panel however to avoid accidental erasure.
4.4.4 RMS Amplitude Restrictions
The output of a sine wave may be programmed to the full rms value of the voltage range
selected. If the AC source is in the 300 V range, the maximum programmable rms voltage is 300
Volt. If a custom waveform is used however, the maximum programmable rms voltage may be
less than the maximum range value. The voltage range limit is based on the use of a sine wave
with a 1.414 crest factor. A 300 V rms sine wave has a 424 Volt peak voltage. The AC source
has a maximum peak voltage capability that is determined by the selected voltage range. If the
user selects a custom waveform with a crest factor that is higher than 1.414, the peak voltage
would exceed this maximum if the rms voltage were to be programmed at 300 V rms.
The Lx Series power source automatically limits the maximum allowable programmed rms
voltage of a any custom waveform by calculating the crest factor of the selected waveform and
controlling the rms limit accordingly. Thus, each custom waveform may have a different
maximum rms value. The controller will prevent the user from programming the rms voltage
above this limit. If a value is entered in the PROGRAM menu above this value, a “Voltage peak
error” message is generated.
Figure 4-9: Waveform Crest Factor Affects Max. rms Voltage
The figure shown here illustrates the relationship between the crest factor of the wave shape (or
its “peakiness”) and the maximum peak voltage allowed for a given voltage range. Since the
peak voltage cannot exceed the AC source‟s capabilities, the programmable rms voltage has to
be restricted, in this case to only 167.8785 volt for the waveform on the left. The sine wave on the
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User Manual Lx / Ls Series II
right can be programmed to the full 300 V rms as this still falls within the same peak voltage
limitation of the AC source.
If the Lx Series is used over the bus, the “:VOLT? MAX” query command can be used to
determine the maximum allowable RMS voltage for the selected waveform. Using the returned
value as part of a program will prevent range errors.
4.4.5 Frequency Response Restrictions
The user may create a waveform that contains any number of harmonic frequencies of the
fundamental. The AC Source itself however has a finite signal bandwidth and will attenuate
higher frequency components of the signal. To limit the maximum frequency component of the
output signal, the controller automatically applies a band-pass filter to all custom waveforms as
they are downloaded. The controller implements the following process for user-defined
waveforms:
Each down loaded waveform will have a computed frequency limit that is less than or equal the
maximum frequency limit of the AC source. The frequency limit is a function of the harmonics
content of the waveform and will follow the equation below.
Fmaxh = Fmax/(level * hn)
If Fmaxh is below the minimum frequency limit, the waveform will be rejected at down load time
and the label will be deleted from the waveform catalogue.
If the Lx Series is used over the bus, the “:FREQ? MAX” query command can be used to
determine the maximum allowable fundamental frequency for the selected waveform. Using the
returned value as part of a program will prevent range errors.
Limits assume a program of full-scale voltage. No adjustments for voltage setting are made
below the full-scale value.
Waveform selection and frequency programming will be subject to the above limit. An error
message will be generated to reflect this type of error:
"22,Waveform harmonics limit"
Transient editing will also generate the above error during keyboard entry. Remote transient entry
will not check for the error until transient execution.
4.4.6 Switching Waveforms
Waveforms can be switched as part of the transient system. Each transient type setup menu has
a FUNC field. This field allows selection of any of the standard or custom waveforms available in
waveform memory. Refer to the section on transients for more details on using transient list to
switch output waveforms.
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