KEPCO MST 488 User Manual
OPERATOR’S MANUAL
MST 488-27
POWER MODULE CONTROLLER
INTERACTIVE DIGITALLY CONTROLLED
POWER MODULE SYSTEM
KEPCO INC.
An ISO 9001 Company.
POWER MODULE
MODEL
MST 488-27
CONTROLLER
ORDER NO. REV. NO.
IMPORTANT NOTES:
1) This manual is valid for the following Model and associated serial numbers:
MODEL SERIAL NO. REV. NO.
2) A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial numbers. Before using this Instruction Manual, check your equipment serial number to identify
your model. If in doubt, contact your nearest Kepco Representative, or the Kepco Documentation Office in New York, (718) 461-7000, requesting the correct revision for your particular model and serial number.
3) The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.
Data subject to change without notice.
KEPCO®
©2000, KEPCO, INC
P/N 243-0880
KEPCO, INC. ! 131-38 SANFORD AVENUE ! FLUSHING, NY. 11352 U.S.A. ! TEL (718) 461-7000 ! FAX (718) 767-1102
email: hq@kepcopower.com
!
World Wide Web: http://www.kepcopower.com
THE POWER SUPPLIER™
INSTRUCTION MANUAL CORRECTION
KEPCO®
THE POWER SUPPLIER™
SECTION 3, OPERATION, add the following:
KEPCO MODEL MST 488-27
NOTE:
The VISA query function (included in the latest versions of the VISA libraries) is not supported
by the MST 488-27. In newer XP and Vista computers a delay is needed to insure the MST 48827 has time to return the response to the query. The VISA query has no provisions to add a
delay, nor can it issue a series of read strobes between sending the request and receiving data
from the device. Instead of the VISA query, use one of the two methods described below.
Method 2 is recommended.
1. Use a VISA Write followed by VISA Read with a small delay between the functions. The
delay is determined by computer speed. A 2 millisecond delay between the Write and Read
functions will be sufficient to insure that there is enough time to receive a response for all valid
queries.
2. Follow the VISA Write with a series of VISA Read strobes while waiting for the data available
bit to be true, followed by the VISA Read function when data is available. This method provides
the highest throughput.
MST488-27/080307
KEPCO, INC. ! 131-38 SANFORD AVENUE ! FLUSHING, NY. 11355 U.S.A. ! TEL (718) 461-7000 ! FAX (718) 767-1102
email: hq@kepcopower.com ! World Wide Web: http://www.kepcopower.com
Declaration of Conformity
Application of Council directives:
Standard to which Conformity is declared:
EN61010-1:2001 (Safety requirements for electrical equipment for measurement,
control and laboratory use - Part 1)
Manufacturer's Name and Address:
Importer's Name and Address:
Type of Equi pme nt:
Model No.:
73/23/EEC (LVD)
93/68/EEC (CE mark)
KEPCO INC.
131-38 SANFORD AVENUE
FLUSHING, N.Y. 11352 USA
P
O
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T
A
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N
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Component Power Supply
[PRODUCT MODEL NUMBER]
Y
Year of Manufacture:
I, the undersigned, declare that the product specified above, when used in conjunction with the conditions of conformance set forth in the product instruction manual, complies with the requirements of the
Low Voltage Directive 73/23/EEC, which forms the basis for application of the CE Mark to this product.
Place: KEPCO Inc.
131-38 Sanford Ave.
Flushing, N.Y.11352 USA
Saul Kupferberg
(Full Name)
Date:
228-1348 DC-COMP/INST 052704
VP OF SALES
(position)
A
Conditions of Conformance
Programming Module
When this product is used in applications governed by the requirements of the EEC, the following restrictions and conditions apply:
1. For European applications, requiring compliance to the Low Voltage Directive, 73/23/EEC, this power
supply is considered a component product, designed for “built in” applications. Because it is incomplete in construction, the end product enclosure must provide for compliance to any remaining electrical safety requirements and act as a fire enclosure. (EN61010-1:2001, Cl. 6, Cl. 7, Cl.8, and Cl. 9)
2. This power supply is designed for stationary installation either within an equipment rack or a KEPCO
Rack Adapter RA 55 or CA 400.
3. This power supply is considered a Class 1 (earthed) product. It is intended for use as part of equipment meant for test, measurement and laboratory use, and is designed to operate from single phase,
three wire power systems. This equipment must be installed in a specifically designed KEPCO rack
adapter and within a suitably wired equipment rack, utilizing a three wire (grounded) mains connection.
See wiring section of this manual for complete electrical wiring instructions. (EN61010-1:2001,
Cl.6.10.1)
4. This power supply has secondary output circuits that are considered SELV.
5. This power supply employs a supplementary circuit protector in the form of a fuse mounted within its
enclosure. The fuse protects the power supply itself from damage in the event of a fault condition. For
complete circuit protection of the end product, as well as the building wiring, it is required that a primary circuit protection device be fitted to the branch circuit wiring. (EN61010-1:2001 Cl. 9.5)
6. Hazardous voltages are present within this power supply during normal operation. All operator adjustments to the product are made via externally accessible switches, controls and signal lines as specified within the product operating instructions. There are no user or operator serviceable parts within
the product enclosure. Refer all servicing to qualified and trained Kepco service technicians.
B
228-1372 COND/CONFORM 052704
SAFETY INSTRUCTIONS
1. Installation, Operation and Service Precautions
This product is designed for use in accordance with EN 61010-1 and UL 3101 for Installation Category 2,
Pollution Degree 2. Hazardous voltages are present within this product during normal operation. The
product should never be operated with the cover removed unless equivalent protection of the operator
from accidental contact with hazardous internal voltages is provided.
!
!
!
There are no operator serviceable parts or adjustments within the product enclosure.
Refer all servicing to trained service technician.
Source power must be removed from the product prior to performing any servicing.
This product is designed for use with nominal a-c mains voltages indicated on the
rating nameplate.
2. Grounding
This product is a Class 1 device which utilizes protective earthing to ensure operator safety.
The PROTECTIVE EARTHING CONDUCTOR TERMINAL must be properly con-
!
nected prior to application of source power to the product (see instructions on installation herein) in order to ensure safety from electric shock.
PROTECTIVE EARTHING CONDUCTOR TERMINAL - This symbol indicates the
point on the product to which the protective earthing conductor must be attached.
EARTH (GROUND) TERMINAL - This symbol is used to indicate a point which is
connected to the PROTECTIVE EARTHING TERMINAL. The component installer/
assembler must ensure that this point is connected to the PROTECTIVE EARTHING TERMINAL.
CHASSIS TERMINAL -This symbol indicates frame (chassis) connection, which is
supplied as a point of convenience for performance purposes (see instructions on
grounding herein). This is not to be confused with the protective earthing point, and
may not be used in place of it.
3. Electric Shock Hazards
This product outputs hazardous voltage and energy levels as a function of normal operation. Operators
must be trained in its use and exercise caution as well as common sense during use to prevent accidental
shock.
This symbol appears adjacent to any external terminals at which hazardous voltage
!
228-1369 SAFETY - (MST) 013004 C/(D Blank)
levels as high as 500V d-c may exist in the course of normal or single fault conditions.
This symbol appears adjacent to any external terminals at which hazardous voltage
levels in excess of 500V d-c may exist in the course of normal or single fault conditions.
TABLE OF CONTENTS
SECTION PAGE
SECTION 1 - INTRODUCTION
1.1 Scope of Manual ..................................................................................................................................... 1-1
1.2 General Description................................................................................................................................. 1-1
1.3 Specifications .......................................................................................................................................... 1-1
1.4 Equipment Supplied ................................................................................................................................ 1-4
1.5 Accessories ............................................................................................................................................. 1-4
SECTION 2 - INSTALLATION
2.1 Unpacking and Inspection ....................................................................................................................... 2-1
2.2 Installation ............................................................................................................................................... 2-1
2.2.1 Set (GPIB) Device Address, Configure RS 232................................................................................. 2-1
2.2.1.1 Using GPIB Only.......................................................................................................................... 2-1
2.2.1.2 Using RS 232 Only ...................................................................................................................... 2-2
2.2.1.3 Using both GPIB addressing and RS 232.................................................................................... 2-3
2.2.1.4 RS 232 Connections.................................................................................................................... 2-3
2.2.2 Start-up Language/Compatibility Mode/GPIB Addressing Default .................................................... 2-3
2.2.3 Set Shield Ground Jumper ................................................................................................................ 2-4
2.2.4 Final System Interconnections........................................................................................................... 2-4
2.3 Rear Terminations on the MST 488-27 ................................................................................................... 2-5
SECTION 3 - OPERATION
3.1 General.................................................................................................................................................... 3-1
3.2 IEEE 488 (GPIB) Bus Protocol................................................................................................................ 3-1
3.2.1 String Parsing.................................................................................................................................... 3-2
3.3 RS 232 Operation.................................................................................................................................... 3-3
3.3.1 RS 232 With GPIB addressing .......................................................................................................... 3-3
3.3.2 Serial INterface.................................................................................................................................. 3-3
3.3.3 RS 232 Implementation ..................................................................................................................... 3-4
3.3.3.1 Echo Mode................................................................................................................................... 3-5
3.3.3.2 Prompt Method ............................................................................................................................ 3-5
3.3.3.3 XON XOFF Method...................................................................................................................... 3-5
3.3.4 Programming Techniques to Optimize Power Supply performance.................................................. 3-6
3.4 SCPI Programming ................................................................................................................................. 3-6
3.4.1 SCPI Messages................................................................................................................................. 3-7
3.4.2 Common Commands/Queries ........................................................................................................... 3-7
3.4.3 SCPI Subsystem Command/Query Structure.................................................................................... 3-7
3.4.4 Program Message Structure.............................................................................................................. 3-8
3.4.4.1 Keyword....................................................................................................................................... 3-8
3.4.4.2 Keyword Separator ...................................................................................................................... 3-10
3.4.4.3 Query Indicator ............................................................................................................................ 3-10
3.4.4.4 Data ............................................................................................................................................. 3-10
3.4.4.5 Data Separator............................................................................................................................. 3-10
3.4.4.6 Message Unit Separator.............................................................................................................. 3-10
3.4.4.7 Root Specifier .............................................................................................................................. 3-10
3.4.5 Addressing Multiple Power Supplies ................................................................................................. 3-10
3.4.6 Understanding The Command Structure........................................................................................... 3-11
3.4.7 Program Message Syntax Summary................................................................................................. 3-12
3.4.8 Status Reporting................................................................................................................................ 3-12
3.4.8.1 Status Reporting Structure........................................................................................................... 3-12
3.4.8.2 Operational Status Register......................................................................................................... 3-13
3.4.8.3 QUEStionable Status Register..................................................................................................... 3-13
3.4.8.4 Multiple Logical Instruments ........................................................................................................ 3-14
3.4.9 SCPI Program Example..................................................................................................................... 3-16
3.5 CIIL Programming ................................................................................................................................... 3-16
MST488-27 SVC 013004
i
TABLE OF CONTENTS
SECTION PAGE
APPENDIX A - IEEE 488.2 COMMAND/QUERY DEFINITIONS
A.1 Introduction............................................................................................................................................. A-1
A.2 *CLS — Clear Status Command .......................................................................................................... A-1
A.3 *ESE — Standard Event Status Enable Command................................................................................ A-1
A.4 *ESE? — Standard Event Status Enable Query..................................................................................... A-1
A.5 *ESR? — Event Status Register Query................................................................................................. A-2
A.6 *IDN? — Identification Query.................................................................................................................. A-2
A.7 *OPC — Operation Complete Command ............................................................................................... A-2
A.8 *OPC? — Operation Complete Query .................................................................................................... A-3
A.9 *OPT? — Options Query ........................................................................................................................ A-3
A.10 *RST — Reset Command....................................................................................................................... A-4
A.11 *SRE — Service Request Enable Command ........................................................................................ A-4
A.12 *SRE? — Service Request Enable Query .............................................................................................. A-4
A.13 *STB? — Status Byte Register Query ................................................................................................... A-4
A.14 *TRG — Trigger Command ................................................................................................................... A-4
A.15 *TST? — Self Test Query....................................................................................................................... A-5
A.16 *WAI — Wait-to-Continue Command ..................................................................................................... A-5
APPENDIX B - SCPI COMMAND/QUERY DEFINITIONS
B.1 Introduction............................................................................................................................................. B-1
B.2
B.3
B.4
B.5
B.6
B.7
B.8
B.9
B.10
B.11
B.12
B.13
B.14
B.15
B.16
B.17
B.18
B.19
B.20
B.21
B.22
B.23
B.24
B.25
B.26
B.27
B.28
B.29
B.30
B.31
B.32
B.33
B.34
B.35
INITiate[:IMMediate] Command .............................................................................................. B-1
INITiate:CONTinuous
Command................................................................................................. B-1
INITiate:CONTinuous Query ....................................................................................................... B-2
INSTrument:CATalog Query.......................................................................................................... B-2
INSTrument[:NSELect]
INSTrument[:SELect]
INSTrument[:SELect]?
INSTrument:STATe
MEASure[:SCALar]:CURRent[:DC]?
MEASure[:VOLTage][:SCALar][:DC]?
Command .............................................................................................. B-2
Command ................................................................................................ B-2
Query..................................................................................................... B-3
Command........................................................................................................ B-3
Query............................................................................. B-3
Query ........................................................................ B-4
OUTPut[:STATe] Command............................................................................................................. B-4
OUTPut[:STATe] Query ................................................................................................................... B-4
[SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude]
[SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude]
[SOURce:]CURRent:[:LEVel]TRIGgered[:AMPlitude]
[SOURce:]CURRent:[:LEVel]TRIGgered[:AMPlitude]?
[SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude]
[SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude]?
[SOURce:]VOLTage:[:LEVel]TRIGgered[:AMPlitude]
[SOURce:]VOLTage:[:LEVel]TRIGgered[:AMPlitude]?
[SOURce:]FUNCtion:MODE
STATus:OPERation:CONDition
STATus:OPEReration:ENABle
Command ......................................................................................... B-7
Query....................................................................................... B-7
Command .................................................................................. B-7
Command........................... B-4
Query.................................. B-4
Command .............................. B-5
Query .................................... B-5
Command........................... B-6
Query ............................... B-6
Command................................ B-6
Query .................................... B-6
STATus:OPEReration:ENABle? Query....................................................................................... B-7
STATus:OPERation[:EVENt]
STATus:PRESet
Command............................................................................................................... B-7
STATus:QUEStionable[:EVENt]?
STATus:QUEStionable:CONDition?
STATus:QUEStionable:ENABle
STATus:QUEStionable:ENABle?
STATus:QUEStionable:INSTrument[1]?
STATus:QUEStionable:INSTrument2?
STATus:QUEStionable:INSTrument[1]:ENABle
STATus:QUEStionable:INSTrument[1]:ENABle
Query ........................................................................................... B-7
Query.................................................................................. B-8
Query............................................................................. B-9
Command................................................................................ B-9
Query .................................................................................... B-9
Query ................................................................... B-9
Query ........................................................................ B-9
Command .............................................. B-10
Query..................................................... B-10
ii
MST488-27 SVC 013004
TABLE OF CONTENTS
SECTION PAGE
B.36
B.37
B.38
B.39
B.40
B.41
B.42
B.43
B.44
B.45
B.46
B.47
B.48
B.49
STATus:QUEStionable:INSTrument2:ENABle
STATus:QUEStionable:INSTrument2:ENABle?
STATus:QUEStionable:INSTrument:ISUM
STATus:QUEStionable:INSTrument:ISUM:ENABle
STATus:QUEStionable:INSTrument:ISUM:ENABle?
SYSTem:COMMunication:GPIB:ADDRess
SYSTem:COMMunication:SERial:BAUD
SYSTem:COMMunication:SERial:ECHO
SYSTem:COMMunication:SERial:PACE
SYSTem:COMMunication:SERial:PROMpt
SYSTem:ERRor[:NEXT]?
SYSTem:LANGuage
SYSTem:SET
SYSTem:VERSion
Command .................................................................................................................... B-13
Query ................................................................................................................... B-13
Query..................................................................................................... B-11
Command.......................................................................................................... B-12
APPENDIX C - CIIL COMMAND DEFINITIONS
Command................................................... B-10
Query....................................................... B-10
Query................................................................. B-10
Command......................................... B-11
Query ............................................. B-11
Command ............................................................. B-11
Command................................................................ B-11
Command................................................................ B-11
Command................................................................ B-11
Command........................................................... B-11
MST488-27 SVC 013004
iii
LIST OF FIGURES
FIGURE TITLE PAGE
1-1 MST488-27 Power Module Controller .......................................................................................................... vi
1-2 Remotely Controlled Power Supply Configurations Using Kepco Products............................................... 1-2
1-3 MST 488-27 Controller Outline Drawing .................................................................................................... 1-3
1-4 Controller to Power Module Interface (Typical).......................................................................................... 1-4
2-1 Configuration Controls................................................................................................................................ 2-5
2-2 Front and Rear Panels of MST 488-27 Power Module Controller.............................................................. 2-6
3-1 RS 232 Implementation.............................................................................................................................. 3-4
3-2 Tree Diagram of SCPI Commands Used with MST 488-27 Controller ...................................................... 3-7
3-3 Message Structure ..................................................................................................................................... 3-9
3-4 Status Reporting Structure ......................................................................................................................... 3-14
3-5 Expansion of QUEStionable Register for Multiple Logical Instruments...................................................... 3-15
3-6 Typical Example Of MST 488-27 Controller Program Using SCPI Commands ......................................... 3-16
A-1 GPIB Commands ....................................................................................................................................... A-3
A-2 Using the *WAIt-to-continue Command ..................................................................................................... A-5
B-1 Use of INSTrument:CATalog Query.......................................................................................................... B-2
B-2 Identifying and Selecting Devices on BITBUS ........................................................................................... B-3
B-3 Programming the Output............................................................................................................................ B-5
B-4 Programming Current................................................................................................................................. B-6
B-5 Using Status Commands and Queries ....................................................................................................... B-8
C-1 FNC — Function Command....................................................................................................................... C-1
C-2 INX — Initiate Op Code Command ............................................................................................................ C-2
C-3 FTH — Fetch Command ............................................................................................................................ C-2
C-4 SET Command........................................................................................................................................... C-3
C-5 OPN, CLS — Open, Close Relay Commands ........................................................................................... C-4
C-6 RST — Reset Command............................................................................................................................ C-4
C-7 CNF, IST — Confidence Test, Internal Self Test Commands.................................................................... C-4
C-8 STA — Status Command ........................................................................................................................... C-5
C-9 GAL — Go to Alternate Language Command........................................................................................... C-6
iv
MST488-27 SVC 013004
LIST OF TABLES
TABLE TITLE PAGE
1-1 General Specifications for MST 488-27 Controller ......................................................................................1-1
1-2 Accessories .................................................................................................................................................1-4
2-1 Device Address Selection ...........................................................................................................................2-2
2-2 Start-up Language/Compatibility Mode/GPIB Addressing Selection ..........................................................2-4
2-3 Compatibility Mode Differences ..................................................................................................................2-4
2-4 Input/Output Pin Assignments ....................................................................................................................2-7
3-1 IEEE 488 (GPIB) Bus Interface Functions ..................................................................................................3-1
3-2 IEEE 488 (GPIB) Bus Command Mode Messages .....................................................................................3-2
3-3 IEEE 488 (GPIB) Bus Data Mode Messages ..............................................................................................3-2
3-4 SCPI Command Index ................................................................................................................................3-8
3-5 Rules Governing Shortform Keywords ........................................................................................................3-9
A-1 IEEE 488.2 Command/query Index ........................................................................................................... A-1
A-2 Standard Event Status Enable Register and Standard Event Status Register Bits ................................... A-1
A-3 Service Request Enable and Status Byte Register Bits ............................................................................. A-4
B-1 SCPI Subsystem Command/query Index .................................................................................................. B-1
B-2 Operation Condition Register, Operation Enable Register,
and Operation Event Register Bits .......................................................................................................... B-7
B-3 Questionable Event Register, Questionable Condition Register
and Questionable Condition Enable Register Bits .................................................................................. B-8
B-4 Questionable Instrument Register 1 Bits ...................................................................................................B-9
B-5 Questionable Instrument Register 1 Bits ...................................................................................................B-10
B-6 Error Messages ..........................................................................................................................................B-12
C-1 CIIL Subsystem Command/query Index ....................................................................................................C-1
C-2 CIIL Error Messages ..................................................................................................................................C-5
C-3 CIIL Error Handling Utility Commands .......................................................................................................C-6
MST488-27 SVC 013004
v
FIGURE 1-1. MST488-27 POWER MODULE CONTROLLER
vi
MST488-27 SVC 013004
FIGURE 0-1.
SECTION 1 - INTRODUCTION
1.1 SCOPE OF MANUAL
This manual contains the specifications and instructions for the installation and operation of the
Model MST 488-27 Power Module Controller (Figure 1-1), manufactured by Kepco, Inc., Flushing, N.Y. U.S.A.. Parts lists and schematic diagrams are included in Section 4.
1.2 GENERAL DESCRIPTION
The Kepco model MST 488-27 is a Power Module Controller which has the capability to program, control and monitor the outputs of up to 27 Kepco MAT, MBT, MST or BOP power supplies (power modules). The MST 488-27 communicates with its Host computer over the IEEE
488 bus (GPIB) using either CIIL (Control Interface Intermediate Language) or SCPI (Standard
Commands for Programmable Instruments) Languages. An auxiliary input port allows for communication via the RS 232-C (EIA 232) standard serial communications bus. The MST 488-27
communicates with the MAT, MBT, MST or BOP series using the IEEE1118 two-wire serial bus,
hereafter referred to as the Control Bus, which allows control over distances up to a maximum
of 1000 feet (300 meters) (see Figure 1-2).
The IEEE 488 GPIB interface functions implemented by the controller are defined by the IEEE
488 Standard, and described in Table 3-1.
The MST 488-27 Controller interfaces to an MST power module via either the RA 55 or CA 400
Rack Adapter; interconnection to the Host Computer on the GPIB is made via an IEEE 488
standard cable. If the serial port is used for communications between the controller and a computer terminal, a 9 pin null-modem RS 232-C connector/cable is required.
The MST 488-27 Controller is comprised of a single-board computer (SBC) and power supply
housed in a 1/9 Rack (7” high by 1-3/4” wide by 20-1/4” deep) case (see Figure 1-3).
1.3 SPECIFICATIONS (REFER TO FIGURE 1-3 AND TABLE 1-1)
The Host Computer can set the output voltage with current limit, or the output current with voltage limit. The Host Computer can then have the MST 488-27 read back the actual output voltage and current delivered by each of the MST power modules to their respective loads. The
MST 488-27 is continually polling all of the power modules on the Control Bus for flags of catastrophic and noncatastrophic errors. All data transmissions over the GPIB are ASCII encoded.
The values for the command parameters can be written in integer, decimal or scientific notation.
The responses from the MST 488-27 are detailed in Section 3 of this manual.
TABLE 1-1. GENERAL SPECIFICATIONS FOR MST 488-27 CONTROLLER
FEATURE SPECIFICATION
A-C Input Requirements
Ambient Operating Temperature Range 0 to +55 ° C
Storage Temperature Range –20 to +75° C
Dimensions 7” H x 1-3/4” W x 20-1/4” D
Color (front panel) Kepco gray, Hartin Paint No. 15-22493
Mounting Rack Adapter (Kepco RA 55 or CA 400)
95 to 264V a-c, 47 to 63 Hz, approximately 12
Watts maximum
MST488-27 SVC 013004
1-1
1-2
FIGURE 1-2. REMOTELY CONTROLLED POWER SUPPLY CONFIGURATIONS USING KEPCO PRODUCTS
800
MST488-27 SVC 013004
FIGURE 1-3. MST 488-27 CONTROLLER OUTLINE DRAWING
MST488-27 SVC 013004
1-3
1.4 EQUIPMENT SUPPLIED
A terminator, Kepco P/N 195-0086, is included with each controller to provide proper termination
of the IEEE 1118 control bus. In configurations where power modules are daisy chained on the
IEEE 1118 control bus (see Figure 1-4), the last power module control bus outlet (in the daisy
chain) must be terminated with the IEEE Control Bus Terminator supplied with the controller to
reduce spurious noise and provide proper impedance matching.
FIGURE 1-4. CONTROLLER TO POWER MODULE INTERFACE (TYPICAL)
1.5 ACCESSORIES
Accessories for the MST 488-27 are listed in Table 1-2.
TABLE 1-2. ACCESSORIES
ITEM FUNCTION
Terminator - 5-pin connector Termination for daisy chain on IEEE 1118 bus. 195-0075
Terminator - 9-pin connector 195-0086
Cable - two 5-pin connectors Daisy chain Kepco Power Supplies with 5-pin
connectors on IEEE 1118 bus.
Cable - one 5-pin and one 9-pin connector, ~6 ft. (2 m) Daisy chain MST 488-27and Kepco Power Sup-
plies with 5-pin connector on IEEE 1118 bus.
Cable - one 5-pin and one 9-pin connector, ~12 ft. (4 m) 118-0852
Cable - two 9-pin connectors, ~ 6 ft. (2 m) Daisy chain MST 488-27and Kepco Power Sup-
plies with 9-pin connector on IEEE 1118 bus.
Cable - two 9-pin connectors, ~ 12 ft. (4 m) 118-0853
1-4
PART NUMBER
118-0699
118-0749
118-0844
MST488-27 SVC 013004
SECTION 2 - INSTALLATION
2.1 UNPACKING AND INSPECTION
The Model MST 488-27 has been carefully inspected and tested prior to packing. Inspect the
shipping carton upon receipt for evidence of damage during transit. Save the original packing
material. If any indication of damage is found, file a claim immediately with the responsible
transport service.
For repairs of a product damaged in shipment, contact the Kepco Factory Representative nearest you or the Kepco Sales Department directly for further instruction.
2.2 INSTALLATION
The installation and set-up procedure for the MST 488-27 consists of the following steps:
1. Set Device Address and/or configure RS 232 port (PAR. 2.2.1).
2. Select start-up language (SCPI or CIIL), GPIB addressing (Primary/Secondary) and Compatibility Mode (PAR. 2.2.2).
3. Set Shield Ground Jumper (PAR. 2.2.3).
4. Perform final system inteconnections (PAR. 2.2.4).
2.2.1 SET (GPIB) DEVICE ADDRESS, CONFIGURE RS 232 (SEE FIGURE 2-1)
A single set of DIP switches, accessible through an access hole on the top (see Figure 2-1), are
used both to set the GPIB Device Address (the factory default is 6) and to configure the RS 232
port. The following paragraphs explain how to proceed if using GPIB only (PAR. 2.2.1.1), RS
232 only (PAR. 2.2.1.2) or both (PAR. 2.2.1.3). RS 232 connections are explained in PAR.
2.2.1.4) and RS 232 operation is described in PAR. 3.3.
NOTE: When a jumper is present between CTS and RTS at the MST 488-27, the DIP switches
configure the RS 232 port as well as set the GPIB address. If the default RS 232 configuration will be used, be sure the RS 232 cable has no internal connections between
CTS and RTS.
2.2.1.1 USING GPIB ONLY
The Device Address is the permanent Listener and Talker address of the MST 488-27 on the
GPIB. It is factory preset to address 6. If a different Device Address is required in your system,
proceed as follows. There are 31 (0-30) possible choices (See Table 2-1).
1. Place MST 488-27 power module controller with the top of the unit facing you, front panel to
the right.
2. The Device Address DIP switches are positions 1 through 5 (from right to left, see Figure
2-1). These switches are preset by Kepco to address 6. For other device addresses set
them according to Table 2-1.
MST 488-27 013004
2-1
TABLE 2-1. DEVICE ADDRESS SELECTION
DECIMAL
ADDRESS
000000
100001
200010
300011
400100
500101
600110
700111
801000
901001
1001010
1101011
1201100
1301101
1401110
1501111
1610000
1710001
1810010
1910011
2010100
2110101
2210110
2310111
2411000
2511001
2611010
2711011
2811100
2911101
3011110
A5 A4 A3 A2 A1
SELECTOR SWITCH SECTION
(SIGNAL LINE)
2.2.1.2 USING RS 232 ONLY
If the default configuration (9600 baud, Echo = on, XON = off) is acceptable, leave DIP switch
positions 1-5 as is. To change from the default configuration, install an external jumper between
RTS and CTS on the RS 232 cable at the MST 488-27. The RS 232 Port can now be configured
using the DIP switches. Place MST 488-27 power module controller with the top of the unit facing you, front panel to the right. The Device Address DIP switches are positions 1 through 5
(from right to left, see Figure 2-1).
• Baud Rate: Sw Pos 4/5 (00 = 9600, 11 = 19200, 10 = 4800, 01 = 2400)
• Echo: Sw Pos 3 (1 = enable, 0 = disable)
• XON: Sw Pos 2 (1 = disable, 0 = enable)
2-2
MST 488-27 013004
2.2.1.3 USING BOTH GPIB ADDRESSING AND RS 232
The same switches are used to configure the RS 232 port and establish the GPIB address; proceed as follows to use both.
1. First, configure the RS 232 port. The default cnfiguration (9600 baud, Echo = on, XON = off)
corresponds to a GPIB address of 6. If this is acceptable, no further configuration is necessary. Proceed to step 2 to change the RS 232 configuration. If the RS 232 configuration is
OK but the GPIB address needs to be changed, proceed to step 3.
2. For an RS 232 configuration other than the default, refer to PAR. 2.2.1.2. If the GPIB address
that corresponds to the RS 232 configuration needs to be changed, proceed to step 3.
3. To change the GPIB address without changing the RS 232 configuration, use the RS 232
port to send the "syst:comm:gpib:addr n" command (where n = the desired GPIB address).
This allows the DIP switches to determine the RS 232 configuration while the software command establishes the GPIB address.
2.2.1.4 RS 232 CONNECTIONS
Since the MST 488-27 uses a 9-pin male connector, it is classified as a Data Terminal Equipment (DTE) in accordance with the RS 232 Standard (equipment using a female connector is
classified as Data Communication Equipment, DCE).
Either a DTE-to-DTE or a null modem cable is required to connect the MST 488-27 to an IBMPC compatible computer. This cable has only three wires and connects RXD at one end to TXD
at the other end. The RS232-C port control lines (Table 2-4) are used to activate special feature
by means of jumpers at the MST 488-27; refer to Table 2-2 and PAR. 2.2.1 for details. Refer to
PAR. 3.3 for RS 232 operation. NOTE: Be sure the cable used has no unintended internal connections, particularly between RTS and CTS.
2.2.2 START-UP LANGUAGE/COMPATIBILITY MODE/GPIB ADDRESSING DEFAULT (SEE FIGURE 2-1)
Program Mode Bits P1 (DIP switch position A6, see Figure 2-1) and P2 (position A7) control the
start-up command language, secondary GPIB addressing with SCPI, and Compatibility Mode
as defined in Table 2-2.
Language - Selection is provided to choose either SCPI or CIIL command language. If SCPI is
selected, you can also choose to implement either primary or secondary GPIB addressing.
Compatibilty Mode - Certain features of the MST 488-27 can be configured to be fully 488.2/
SCPI compatible (Mode 0) or to be backward compatible with previous Kepco products (Mode
1). Differences between Mode 0 and Mode 1 functionality are explained in Table 2-3.
MST 488-27 013004
2-3
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