Technical
Information
Manual
Revision n. 1
24 March 2010
NPO:
00112/07:N1471.MUTx/01
MOD. N1471
4 CH. PROGRAMMABLE
HV POWER SUPPLY
MANUAL REV.1
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.
Disposal of the Product
The product must never be dumped in the Municipal Waste. Please check your local
regulations for disposal of electronics products.
Document type: Title: Revision date: Revision:
User's Manual (MUT) N1471 4 Channel Programmable HV Power Supply 24/03/2010 1
PRELIMINARY
TABLE OF CONTENTS
1. GENERAL DESCRIPTION.........................................................................................................................7
1.1. OVERVIEW ...............................................................................................................................................7
2. TECHNICAL SPECIFICATIONS..............................................................................................................8
2.1. PACKAGING..............................................................................................................................................8
2.2. POWER REQUIREMENTS ............................................................................................................................8
2.3. FRONT AND BACK PANEL..........................................................................................................................9
2.4. FRONT PANEL CONNECTIONS..................................................................................................................11
2.4.1. Local control section.....................................................................................................................11
2.4.2. Channel control section.................................................................................................................11
2.4.3. HV Status control section..............................................................................................................12
2.4.3.1. Alarm signal.............................................................................................................................................. 12
2.4.3.2. Interlock signal..........................................................................................................................................12
2.4.4. Remote communication control section.........................................................................................13
2.5. REAR PANEL CONNECTIONS....................................................................................................................14
2.5.1. HV Channel Output.......................................................................................................................14
2.6. TECHNICAL SPECIFICATIONS TABLE .......................................................................................................15
3. OPERATING MODES...............................................................................................................................16
3.1. PROGRAMMABLE PARAMETERS..............................................................................................................16
3.1.1. Boards parameters ........................................................................................................................16
3.1.2. Channel settings ............................................................................................................................17
3.2. LOCAL CONTROL ...................................................................................................................................17
3.2.1. HV connection...............................................................................................................................18
3.2.2. Module settings..............................................................................................................................19
3.2.3. Channel settings ............................................................................................................................20
3.2.3.1. Group Settings...........................................................................................................................................23
3.2.3.2. Smileys......................................................................................................................................................26
3.3. CURRENT MONITOR OFFSET CALIBRATION .............................................................................................26
3.4. REMOTE CONTROL.................................................................................................................................27
3.4.1. Serial Links....................................................................................................................................27
3.4.1.1. USB communication ................................................................................................................................. 27
3.4.1.2. RS232 communication ..............................................................................................................................28
3.4.1.3. RS485 communication ..............................................................................................................................28
3.4.1.4. Ethernet communication............................................................................................................................29
3.4.2. Communication Control................................................................................................................30
3.4.2.1. Remote Control: Main Menu.....................................................................................................................30
3.4.2.2. Remote Control: General Menu ................................................................................................................ 30
3.4.2.3. Remote Control: Channels Menu..............................................................................................................30
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3.4.2.4. Remote Control: firmware upgrade...........................................................................................................32
3.4.2.5. Remote Control: format EEPROM............................................................................................................32
PRELIMINARY
3.5. USB - RS485 COMMUNICATION PROTOCOL ..........................................................................................33
3.5.1. Command Format..........................................................................................................................33
3.5.2. Format of response string..............................................................................................................33
3.5.3. MONITOR commands related to the Channels.............................................................................33
3.5.3.1. Meaning of STATUS bits (value read in decimal Format)........................................................................34
3.5.4. MONITOR commands related to the module.................................................................................35
3.5.4.1. Meaning of Board Alarm bits.................................................................................................... ................ 36
3.5.5. SET commands related to the Channels........................................................................................36
3.5.6. SET commands related to the module............................................................................................36
4. INTERNAL SETTINGS.............................................................................................................................37
4.1. POLARITY SELECTION.............................................................................................................................37
4.2. INTERNAL SWITCHES ..............................................................................................................................38
4.2.1. Local Bus termination ...................................................................................................................38
4.2.2. RS485 – RS232 conversion............................................................................................................38
LIST OF FIGURES
FIG. 1.1: MOD. N1471 4 CHANNEL PROGRAMMABLE HV POWER SUPPLY...............................................................7
FIG. 2.1: MOD. N1471 SERIES FRONT PANEL ............................................................................................................9
FIG. 2.2: MOD. N1471 SERIES BACK PANEL............................................................................................................10
FIG. 2.3: LOCAL CONTROL PANEL...........................................................................................................................11
FIG. 2.4: CHANNEL CONTROL PANEL AND KILL SCHEME.........................................................................................11
FIG. 2.5: N1471 HV STATUS CONTROL PANEL .......................................................................................................12
FIG. 2.6: N1471 ALARM ELECTRICAL SCHEME.....................................................................................................12
FIG. 2.7: N1471 INTERLOCK ELECTRICAL SCHEME.............................................................................................12
FIG. 2.8: REMOTE COMMUNICATION CONTROL AND RS485 I/O – RS232 IN ELECTRICAL SCHEME ........................13
FIG. 2.9: HV CHANNEL PANEL AND TEST POINT ELECTRICAL SCHEME ...................................................................14
FIG. 3.1: WELCOME SCREEN...................................................................................................................................17
FIG. 3.2: CHANNEL OFF STATUS SCREEN ...............................................................................................................18
FIG. 3.3: CHANNEL ON STATUS SCREEN.................................................................................................................18
FIG. 3.4: CHANNEL KILL STATUS SCREEN .............................................................................................................18
FIG. 3.5: MODE SETTINGS STATUS SCREEN .............................................................................................................19
FIG. 3.6: MODE SETTINGS ACCESS SCREEN.............................................................................................................19
FIG. 3.7: MODE SETTINGS EDIT SCREEN..................................................................................................................19
FIG. 3.8: CHANNEL SETTINGS EDIT SCREEN ............................................................................................................20
FIG. 3.9: CHANNEL VSET SELECT SCREEN.............................................................................................................20
FIG. 3.10: CHANNEL VSET ACCESS SCREEN ..........................................................................................................20
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PRELIMINARY
FIG. 3.11: CHANNEL VSET DIGIT SELECTION SCREEN............................................................................................21
FIG. 3.12: CHANNEL VSET DIGIT ACCESS SCREEN.................................................................................................21
FIG. 3.13: CHANNEL VSET DIGIT ADJUST SCREEN .................................................................................................21
FIG. 3.14: CHANNEL VSET DIGIT CONFIRM SCREEN...............................................................................................21
FIG. 3.15: CHANNEL VSET CONFIRM SCREEN........................................................................................................22
FIG. 3.16: CHANNEL VSET DE-SELECT SCREEN .....................................................................................................22
FIG. 3.17: CHANNEL KILL SCREEN ........................................................................................................................22
FIG. 3.18: CHANNEL EXIT SCREEN........................................................................................................................23
FIG. 3.19: GROUP SELECTION .................................................................................................................................23
FIG. 3.20: GROUP ACTIVE.......................................................................................................................................23
FIG. 3.21: GROUP VSET ACCESS SCREEN...............................................................................................................24
FIG. 3.22: GROUP VSET DIGIT SELECTION SCREEN ................................................................................................24
FIG. 3.23: GROUP CHANNEL VSET DIGIT ACCESS SCREEN.....................................................................................24
FIG. 3.24: GROUP VSET DIGIT ADJUST SCREEN......................................................................................................24
FIG. 3.25: GROUP VSET DIGIT CONFIRM SCREEN...................................................................................................25
FIG. 3.26: CHANNEL VSET DE-SELECT SCREEN .....................................................................................................25
FIG. 3.27: GROUP EXIT SCREEN ............................................................................................................................25
FIG. 3.28: USB COMMUNICATION DIAGRAM ..........................................................................................................27
FIG. 3.29: RS232 COMMUNICATION DIAGRAM .......................................................................................................28
FIG. 3.30: RS485 COMMUNICATION DIAGRAM .......................................................................................................28
FIG. 3.31: ETHERNET COMMUNICATION DIAGRAM .................................................................................................29
FIG. 3.32: RS232 PORT CABLE ADAPTER ................................................................................................................29
FIG. 3.33: MAIN MENU...........................................................................................................................................30
FIG. 3.34: BOARD STATUS MENU...........................................................................................................................30
FIG. 3.35: CHANNELS MENU ..................................................................................................................................31
FIG. 3.36: PC KEYBOARD .......................................................................................................................................31
FIG. 3.37: CHANNELS GROUP SETTING....................................................................................................................31
FIG. 3.38: FIRMWARE UPGRADE MENU/1 ...............................................................................................................32
FIG. 3.39: FIRMWARE UPGRADE MENU/2 ...............................................................................................................32
FIG. 3.40: FORMAT EEPROM MENU .....................................................................................................................32
FIG. 4.1: POLARITY SELECTION INSTRUCTIONS.......................................................................................................37
FIG. 4.2: DIP SWITCH POSITION...............................................................................................................................38
LIST OF TABLES
TABLE 1.1: AVAILABLE ITEMS .................................................................................................................................7
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PRELIMINARY
TABLE 2.1: POWER REQUIREMENTS..........................................................................................................................8
TABLE 2.2: INTERLOCK OPERATION .......................................................................................................................13
TABLE 2.3: MOD. N1471 CHANNEL TECHNICAL SPECIFICATIONS ..........................................................................15
TABLE 3.1: SMILEYS LIST.......................................................................................................................................26
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PRELIMINARY
1. General description
1.1. Overview
Fig. 1.1: Mod. N1471 4 Channel Programmable HV Power Supply
The Mod. N1471 provides 4 independent High Voltage channels in a single width NIM
mechanics. Two and one channel versions (N1471A and N1471B) are also available.
Each channel can provide a ±5.5kV / 300 µA max output.
Channels have common floating return (common return insulated from the crate ground);
HV outputs are delivered through SHV connectors.
The HV output RAMP-UP and RAMP-DOWN rates may be selected independently for
each channel in the range 1÷500 V/s in 1 V/s steps.
Safety features include:
• OVERVOLTAGE and UNDERVOLTAGE warning when the output voltage differs from
the programmed value by more than 2% of set value (minimum 10V).
• Programmable VMAX protection limit
• OVERCURRENT detection: if a channel tries to draw a current larger than its
programmed limit, it enters TRIP status, keeping the maximum allowed value for a
programmable time (TRIP), before being switched off
• Channels can be enabled or disabled individually through the Interlock logic.
Module control can take place either locally, assisted by a Graphic color display or
remotely, via USB, RS232 or RS485, the latter allowing to build a N1471s’ daisy chain
network.
It is also controllable via TCP/IP by the Smart Fan Unit of CAEN NIM 8301 crate.
Control software is available (Mod SW1470), able to manage up to 32 modules (up to
128 channels).
Table 1.1: Available items
Code Model Description
WN1471X05AAC N1471 4 Channel NIM Programmable HV Power Supply (± 5.5 kV, 300 µA, 5 nA res.)
WN1471A05AAC N1471A 2 Channel NIM Programmable HV Power Supply (± 5.5 kV, 300 µA, 5 nA res.)
WN1471B05AAC N1471B 1 Channel NIM Programmable HV Power Supply (± 5.5 kV, 300 µA, 5 nA res.)
WSW1470XAAAA SW1470 N147X Control Software
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PRELIMINARY
2. Technical specifications
2.1. Packaging
The Model N1471 is housed in a single width NIM module.
2.2. Power requirements
Table 2.1: Power requirements
Voltage Current
+12 V 850 mA
-12 V 850 mA
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PRELIMINARY
2.3. Front and back panel
Fig. 2.1: Mod. N1471 series front panel
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PRELIMINARY
Fig. 2.2: Mod. N1471 series back panel
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PRELIMINARY
2.4. Front panel connections
2.4.1. Local control section
Fig. 2.3: Local control panel
NAME: TYPE: FUNCTION:
MONITOR
TUNE
1” OLED DISPLAY (96x64)
ROTARY SWITCH
Local settings monitoring
Parameter and Mode setting
2.4.2. Channel control section
Fig. 2.4: Channel control panel and Kill scheme
NAME: TYPE: FUNCTION:
HV_EN/OFF/KILL 3 POS. SWITCH
ON RED LED
REMOTE KILL
+ GREEN LED
- YELLOW LED
AMP 280370-2
Channel Enable and turning OFF/KILL
HV On enabled
The channel is KILLED as no current flows across the
1Kohm resistor; this is achieved either as the 1-2 contacts
are open or as a +4÷6Vdc voltage is fed to pin 1 (see note)
Positive polarity
Negative polarity
1
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1
OFF: Channel turned off according to RAMP DOWN setting; KILL: Channel turned off at fastest available rate
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PRELIMINARY
2.4.3. HV Status control section
Fig. 2.5: N1471 HV Status control panel
NAME: TYPE: SIGNAL: FUNCTION:
ON RED LED
ALARM RED LED/LEMO CONN. Out
INTERLOCK RED LED/LEMO CONN. In
2.4.3.1. Alarm signal
HV On enabled (at least one channel ON)
Alarm status signaled (active LOW)
Interlock signal
Fig. 2.6: N1471 ALARM electrical scheme
Alarm signal output signal electrical scheme is reported in the figure above. The
maximum output is 400mA@12V on ± Pins.
2.4.3.2. Interlock signal
Fig. 2.7: N1471 INTERLOCK electrical scheme
A schematic diagram of the Interlock input is shown in the figure above, where the diode
is part of optocoupler stage.
Interlock means that channels are hardware disabled. The interlock operation is
explained by the following table:
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