VISyN SERIES
Integrated Power Supply System for use with Particle Detectors/PMTs
The industry standard for high-energy physics applications
Description
VISyN stands for: Voltage, I (current) System on Network.
The 1450 VISyN (pronounced “vision”) Series is designed to fulfill the requirements of the most demanding high voltage applications by providing the ultimate in flexibility and performance. The system is based on a modular, open architecture. It consists of 2 mainframe styles, a choice of controller architectures, and a variety of HV cards, all designed for use in high-energy physics research using HV detector arrays.
The inherent modularity with interchangeable cards and multiple mainframes with different power capabilities allows for tailoring the system to specific performance/scale requirements. System expansion is as simple as adding more cards, power supplies or mainframes.
A versatile control interface, with assured reliability
VISyN system HV cards are designed to produce stable outputs with low noise (ripple). Output accuracy is guaranteed by innovative designs and a traceable calibration procedure performed at the factory.
The VISyN system is designed for high reliability, serviceability and long operating life. Wherever possible, the use of limited life components are avoided. High efficiency bulk power supplies are used to minimize consumption and to guarantee long life. Major sections of the mainframe are modular and can be replaced easily.
All interfaces operate with the PropertySum™ and ModuleSum™ algorithms which significantly reduce system overhead when monitoring the VISyN cards and mainframes. PropertySum and ModuleSum provide a series of status words for each HV card and mainframe.
VISyN provides the highest performance, yet it’s easy to use. For instance, data is displayed in a spreadsheet format. Parameters are battery backed-up and remote operation with local display is supported. Additionally, the 1454 allows complete local HV control over all the channels in its mainframe through its front panel display and keypad.
Features
- Modular and scalable for maximum flexibility
- Control via standard RS-232 serial buss or Ethernet
- Three levels of safety features designed into the system to protect both the user and the detector.
- Hardware Interlock and Panic Off circuits shut down all outputs when activated.
- Current trips and voltage-limit circuits shut off or limit the output when an over-current or voltage-value condition is detected.
- Password protection and “locks” on programmed values protect against accidental changes to parameters.
- HV card on-board processor provides accurate measurements of current and voltage.
- Data displayed in a user-friendly spreadsheet format by the mainframes
- Offered with “LHV” multi-pin HV connector – less than one third the price of SHVs.
- Single channel display with large (.16 cm), easy to read characters.
- The typical HV module consists of a low voltage base board and an encapsulated HV daughter card.
- The 1458 mainframe provides the highest channel density and lowest per channel cost.
- Breaking the high voltage interlock connection causes the system to disable all outputs.
- High voltage circuits are insulated with a flame resistant material which acts as a safety feature and protects the circuits.
- Multi-channel display showing the single parameter status of up to 80 channels.
- High voltage cards contain their own ADCs and references for accurate readback.
Product Specifications
Select the High Voltage Cards
Determine number of channels needed, and select the HV Cards based on the type of detector, voltage and current requirements.
A. Model 1461 2.5 mA, 3 kV Card
Application: Photomultiplier Tubes
The 1461 HV card supplies 12 independent channels in a single slot, suitable for photomultiplier tubes. The high voltage output is programmable from 0 to 3 kV, and has an output current limit of 2.5 mA/channel. Maximum load is 1.2 MΩ to 3 kV. Other features include: voltage measurement, current measurement, programmable current trip, hardware voltage limit (one per card), and programmable ramp up and ramp down rates.
B. Model 1462 4 mA, 3 kV Card
Application: Photomultiplier Tubes
The 1462 HV card is similar to the 1461, except it has 6 independent channels with a maximum of 4 mA output per channel at 3 kV. This card is useful for powering several closely matched photomultiplier tubes at one time from each output channel. Current and voltage readback, limits and trips are included as is the ability to completely shut off any of the six channels.
C. Model 1468 0.5 mA, 6 kV Card
Application: Drift Chambers, High Purity Ge Detectors, etc.
The 1468 HV card generates up to 6 kV and 0.5 mA on 6 independent channels. The 1468 can power a number of detectors requiring higher voltage ranges from PMTs to drift chambers to high purity Germanium detectors. Voltage, current trip, and ramping rates are all programmable to ensure the protection of your detectors.
D. Model 1469
100 µA, 3.5 kV Distributor Card
Application: Wire Chambers, Multi-Group Drift Chamber Arrays
The 1469 HV card is ideal for chamber applications. The card supplies
24 channels of high voltage, programmable in groups of 8 channels. All
channels within a group are programmed to the same output voltage, in
steps of 1 V, from 0 to 3.5 kV with channel to channel variation within
each group nominally less than 500 mV. Each channel provides current readback
and current trip resolution of 25 nA and a maximum output current of 100
µA. Ramp up and ramp down rates are programmable for
each group of 8. In the event of a trip, a relay disconnects the output.
Other outputs within the group remain powered.
E. Model 1471
Independent 200 µA, 6kV Card
Application: Multi-Channel Drift Chambers, Ge Detectors
The 1471 card supplies 8 channels of high voltage up to 6 kV at a maximum
current of 200 uA. All channels are programmed individually, in steps
of 1 V, from 0 to 6 kV.Each channel provides current readback and current
trip resolution of 15 nA .
Determine The Main Frame
Determine the Mainframe, based on the number of cards, power required and features.
This diagram depicts a system with all channels at maximum specified current and voltage. Lower power mainframes can be used if HV outputs are below maximum power. See the HV Card Matrix below for details.
1454 4-Slot Mainframe with Local Remote Control Application: Medium-sized Systems with moderate channel needs
The 1454 has a built-in LCD display and front panel keypad for easy and complete local control of the system.
Large System 1458 16-Slot Full Size Mainframe Application: Large-sized Systems with need for large number of channels
The 1458 offers the best price per channel with 192 channels of PMT supply capability or 384 channels of drift chamber supply. Three different power configurations can be selected based on actual applications.
Choose the Control Interface
Choose the Control Interface, based on data transfer rate, number of mainframes, and data interface needs.
Manual Front-Panel Control 1454 Only
The 1454 mainframe offers a convenient front-panel display and keypad. A number of spreadsheet-like displays are available for HV settings and status information. The user can select one or more channels to enter or change values. Specific keys support value Increment and Decrement operations. A Delta key allows increasing (or decreasing) one or a selected group of channels by an entered value. Specific Save and Recall keys provide access for up to 6 different configurations of voltage settings. The System key provides access to a menu of mainframe features including access to limits for HV settings and the locking of HV settings and/or limits. The channel Enable/Disable keys and HV On/Off keys provide convenient access to these critical functions.
Manual Control via VT100 Terminal 1454 or 1458
The 1454 and 1458 mainframes can be controlled with a VT100-compatible terminal via the mainframe serial port. From such a terminal, a full screen display can be activated which is similar to the 1454 front panel display both in appearance and operation. Indeed, nearly all 1454 front-panel key operations are mapped to terminal keys. A convenient menu of terminal key operations is provided alongside of the HV setting display. Once familiar with the key assignments, the user can toggle a wide screen mode which doubles the amount of displayed data.
Host Control via RS232 or Ethernet
As equipped standard, the 1454 and 1458 mainframes can be controlled by a host system via an RS-232 serial port. A full set of ASCII commands are available to access all HV settings and system features. The user can activate a parameter view mode which disables changes in settings. Baud rates of 2.4K, 4.8K, 9.6K and 19.2K are available.
The 1454 and 1458 mainframes can be controlled by a host system via a 10 Base T Ethernet LAN. As with serial control, a full set of ASCII commands are available to access all HV settings and system features. The user can activate a parameter view mode which disables changes in settings. Data throughput of up to 10 megabits/second is practical with Ethernet.
Choice of HV Card Connectors
VISyN™
system high voltage cards use either the SHV connector or the LHV multi-pin
connector. The LHV was designed in collaboration with a major connector
manufacturer.
The LHV is designed to be used with an RG59 cable and has 8 high voltage outputs and a separate ground connection. The LHV connector is rated to 4 kV and has a locking feature as well as strain relief.
SHV connectors are the traditional connector used in many high voltage applications. SHVs are rated up to 5 kV and are locking
Pin Out
| Cable | From | TO |
|---|---|---|
| C14 | 1450-1 / J1 40PIN | 1450-8 J1 40 PIN and to 1454-4 / J5 40 PIN |
| C15 | 1450-1 / J5 50 PIN | 1454-3 / P4 50 PIN |
| C12 | 1450-1 / J14 | MOTHERBOARD / RESET |
| C13 | 1450-2 / J14 | MOTHERBOARD / SPEAKER |
| C16 | 1450-2 / J1 | LCD DISPLAY BD. / CONN. |
| C1 | 1454-4 / J6 | POWER SUPPLY |
| C3 | 1454-4 / J7 | 1454-5 / J3 |
| 1454-4 / J8 | FAN | |
| 1454-4 / J9 | 1454 / FAN | |
| C11 | 1454-4 / J10 | POWER CONN./ MOTHERBOARD |
| 1454-4 / J11 | OPTIONAL | |
| C8 | 1454-5 / J1 | POWER SUPPLY |
| C5 | 1454-5 / J2 | POWER SUPPLY |
| C6 | 1454-5 / J4 | POWER SUPPLY |
| C17 | 1454-3 / P3 | FRONT PANEL KEY SWITCH |
| C18 | 1454-3 / E5, E6 | LCD DISPLAY BD. |
| 1454-3 / P1 | TOUCH PANEL | |
| C4 | POWER SUPPLY GND | CHASSIS GND |
| C2 | POWER SUPPLY GND | GND CHAIN |
| C7 | POWER SUPPLY | A.C. BREAKER |
| C9 | LINE FILTER GND | CHASSIS GND STUD |
| C10 | A.C. BREAKER | LINE FILTER |
Printable Brochures and Other Downloads
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