Technical
Information
Manual
Revision n.5
2 May 2005
MOD. A 1732 - A 1832
HIGH VOLTAGE
BOARDS
MANUAL REV.5
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CAEN will repair or replace any product within the guarantee period if the Guarantor declares that the
product is defective due to workmanship or materials and has not been caused by mishandling,
negligence on behalf of the User, accident or any abnormal conditions or operations.
CAEN declines all responsibility for damages or
injuries caused by an improper use of the Modules due
to negligence on behalf of the User. It is strongly
recommended to read thoroughly the CAEN User's
Manual before any kind of operation.
CAEN reserves the right to change partially or entirely the contents of this Manual at any time and without
giving any notice.
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TABLE OF CONTENTS
1. INTRODUCTION.........................................................................................................................................................3
1.1 THE CAEN UNIVERSAL MULTICHANNEL POWER SUPPLY SYSTEM...........................................................................3
1.2 TECHNICAL SPECIFICATIONS TABLE OF THE SY 1527 SYSTEM..................................................................................5
2. MOD. A 1732 - A 1832 HV BOARDS.........................................................................................................................6
2.1 FUNCTIONAL DESCRIPTION.......................................................................................................................................6
2.2 CHANNEL CHARACTERISTICS TABLE........................................................................................................................7
2.3 FRONT PANEL ..........................................................................................................................................................8
2.4 TECHNICAL SPECIFICATIONS ....................................................................................................................................9
2.4.1 Packaging....................................................................................................................................................10
2.4.2 External connections ...................................................................................................................................10
2.4.3 Displays.......................................................................................................................................................10
2.4.4 Other components........................................................................................................................................11
3. SAFETY INFORMATION AND INSTALLATION REQUIREMENTS ..............................................................12
3.1 GENERAL SAFETY INFORMATION ............................................................................................................................12
3.1.1 Injury Precautions.......................................................................................................................................12
3.2 SAFETY TERMS AND SYMBOLS ON THE PRODUCT ...................................................................................................13
3.3 INSTALLATION ............................................................................................................................... ........................13
4. OPERATING MODES...............................................................................................................................................14
4.1 OUTPUT CONTROL AND MONITORING......................................................................................................................14
4.2 OUTPUT ENABLE....................................................................................................................................................15
4.3 FULL SCALE RANGE SETTING ..................................................................................................................................15
APPENDIX A....................................................................................................................................................................... 18
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LIST OF FIGURES
FIG. 2.1 – MOD. A 1732 – A 1832 (LEFT) AND MOD. A 1732B – A 1832B (RIGHT) FRONT PANEL...................9
FIG. 4.1 – A) MOD. A1732 - A 1832 SIDE VIEW; B) MOD. A1732B - A 1832B TOP VIEW.....................................16
FIG. 4.2 – FULL SCALE RANGE DIP-SWITCH TOP VIEW....................................................................................................17
FIG. A.1 – MOD. A1832 E CHANNEL INDIVIDUAL ENABLE...........................................................................................18
LIST OF TABLES
TABLE 1.1 - TECHNICAL SPECIFICATIONS OF THE SY 1527 MAINFRAME: GENERAL....................................................5
TABLE 2.1 - CHANNEL CHARACTERISTICS OF THE MOD. A 1732 / 1732B - A 1832 / 1832B HV BOARDS.............7
TABLE 4.1 - FULL SCALE RANGE SETTINGS......................................................................................................................16
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1. Introduction
1.1 The CAEN Universal Multichannel Power Supply System
The SY 1527 system is the fully equipped, large scale experiment version of a new line
of power supply systems which represent CAEN's latest proposal in the matter of High
Voltage and Low Voltage Power Supplying. This system outlines a completely new
approach to power generation and distribution by allowing to house, in the same
mainframe, a wide range of boards with different functions, such as High/Low Voltage
boards, generic I/O boards (temperature, pressure monitors, etc.) and branch controllers,
where the latter are used to control other remote generators and distributors.
Modularity, flexibility and reliability are the key-points of its design, enabling this module
to meet the requirements of a wide range of experimental conditions. The latter range
from those of LHC experiments, in which the model’s features find prior application, to
those of other less challenging, but still demanding, High Energy Physics experiments.
The mainframe is housed in a 19"-wide, 8U-high euro-mechanics rack and hosts four
main sections:
- the Board Section, with 16 slots to house boards, distributors and branch controllers;
- the Fan Tray Section, housing 6 fans disposed on two rows;
- the Power Supply Section, which consists of the primary power supply and up to 3
power supply units;
- the CPU and Front Panel Section which includes all interface facilities.
The User interface features the usual friendliness of the previous CAEN systems which
now also includes a 7.7" colour LCD. A wide choice of interfaces provides full
communication compatibility with the previous systems and the possibility of controlling
heterogeneous external devices.
Modularity has been one of the leading criteria in the design and development of the
system: both the Power Supply Section and the Board Section are completely modular.
The Power Supply Section allows different configurations with up to 3 power supply units
per mainframe (up to 2250 W), while the Board Section can house up to 16 boards able
to fulfil different functions. A new line of boards and distributors, analogous with those
available for the SY 527 system, and a set of branch controllers has been specially
developed for this new system. The minimum system configuration consists of the
primary power supply, one Power Supply Unit and one board.
The concept of modularity has been extended up to the possibility of arranging ‘clusters’
constituted by one ‘intelligent’ SY 1527 system able to drive other ‘non-intelligent’
systems, i.e. systems without CPU (to be implemented). The connections among the
systems constituting the cluster are realised through a new CAEN interface, the Local
Net.
The extreme flexibility of the system, which allows to house indifferently, inside the same
mainframe, boards with different functions, is further enhanced by the possibility of
developing ad-hoc boards and even complete custom peripheral systems. The latter,
actually, can be designed specifically for on-detector installation. All the custom
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electronics can be anyway remotely controlled by single boards which are inserted in the
SY 1527 mainframe and act as branch controllers.
Fast, accurate set-up and monitoring of system parameters (14-bit resolution on Voltages
and Currents with standard boards) is available for each branch controller thanks to the
use of one microprocessor per slot. All the operational parameters are stored in a nonvolatile memory (EEPROM) to be still available after Power-Off. The parameters can be
controlled either via CAEN traditional built-in links (RS232, H.S. CAENET) or via CERNapproved Fieldbuses or via Ethernet (TCP/IP). Programmable handling of parameters
and errors is available as well.
Channel trip control on other crates is performed via four external differential trip lines. A
sophisticated trip handling via software allows to control and correlate trip conditions on
the channels of the crate as well as of other crates connected to it.
Live insertion and extraction of the boards, which reduces the global down time, and
easy access to the computing core and peripherals completes the system’s flexibility.
Easy interfacing is another key-point of the SY 1527 system. Thanks to the H.S.
CAENET interface, the system ensures full communication compatibility with the
previous models. Besides the RS232 interface and Ethernet (TCP/IP) provided with the
standard version of the system, CAN-bus can be furnished on request, as well as special
boards featuring optical links for remote communications. The Power Supply Section and
Board Section can be externally synchronised via front panel connectors.
Secure access to the system via Intranet is foreseen together with a multilevel
management of custom User's profiles. In particular, three different access levels have
been implemented: Guest, User and Administrator, each of which with password
protection.
Handy maintenance and upgrading, which constitute a major issue in the reliability of a
system, are further guaranteed by the possibility of accessing and servicing the system
via network facilities. Actually, Telnet and WWW access facilities allow remote debugging
and technical support of the system, including future firmware upgrading.
For a detailed description of the SY 1527 Universal Multichannel Power Supply System
please refer to the SY 1527 User's Manual .
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