Caen N1471 Series Technical document

Technical Information Manual
Revision n. 19
12 February 2016
N1471
PROGRAMMABLE HV
POWER SUPPLY

CAEN will repair or replace any product within the guarantee period if the Guarantor declares that the product is defective d ue
to workma nship or materials and hasnot been caused by misha ndling, negli gence on behalf of the User, a ccident or any
abnorma l conditi ons or operati ons.
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.
MADE IN ITALY : We stress the fact that all the boards are made in Italy because in this globalized world,
where getting the lowest possible price for products sometimes translates into poor pay and working
conditions forthe peoplewho makethem,at leastyou know that who made your board was reasonablypaid
and worked in a safe environment. (this obviously applies onlyto the boards marked "MADE IN ITALY", we
can not attest to the manufacturing process of "third party" boards).

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TABLEOF CONTENTS
1General description ..............................................................................................................................................................5
1.1 Overview.......................................................................................................................................................................5
2Technical specifications......................................................................................................................................................6
2.1 Packaging.....................................................................................................................................................................6
2.2 Power requirements....................................................................................................................................................6
2.3 Front and back panel..................................................................................................................................................8
2.4 Front panel connections..........................................................................................................................................10
2.4.1 Local control section...........................................................................................................................................10
2.4.2 Channel control section......................................................................................................................................10
2.4.3 HV Status control section..................................................................................................................................11
2.4.3.1 Alarmsignal..................................................................................................................................................11
2.4.3.2 Interlock signal..............................................................................................................................................11
2.4.4 Remote communication control section..........................................................................................................12
2.5 Rear panel connections...........................................................................................................................................13
2.5.1 HV Channel Output.............................................................................................................................................13
2.6 Imon Zoom................................................................................................................................................................13
2.7 Technical specifications table.................................................................................................................................14
3Operating modes ................................................................................................................................................................15
3.1 Programmable parameters.....................................................................................................................................15
3.1.1 Boards parameters.............................................................................................................................................15
3.1.2 Channel settings..................................................................................................................................................16
3.2 Local Control.............................................................................................................................................................17
3.2.1 HV connection.....................................................................................................................................................17
3.2.2 Module settings...................................................................................................................................................18
3.2.3 Channel settings..................................................................................................................................................19
3.2.3.1 Group Settings..............................................................................................................................................22
3.2.3.2 Smileys.........................................................................................................................................................24
3.3 Currentmonitor offset calibration...........................................................................................................................24
3.4 Remote Control.........................................................................................................................................................25
3.4.1 Serial Links...........................................................................................................................................................25
3.4.1.1 USB communication .....................................................................................................................................25
3.4.1.2 RS232 communication..................................................................................................................................25
3.4.1.3 RS485 communication..................................................................................................................................26
3.4.1.4 Ethernet communication...............................................................................................................................26
3.4.2 Communication Control......................................................................................................................................27
3.4.2.1 Remote Control: Main Menu.........................................................................................................................27
3.4.2.2 Remote Control: General Menu ....................................................................................................................28
3.4.2.3 Remote Control: Channels Menu..................................................................................................................28
3.4.2.4 Remote Control: firmwareupgrade...............................................................................................................29
3.4.2.5 Remote Control: format EEPROM................................................................................................................30
3.4.2.6 Remote Control: Current offset calibration....................................................................................................30
3.5 USB - RS485 Communication Protocol................................................................................................................31
3.5.1 Command Format...............................................................................................................................................31
3.5.2 Format of response string..................................................................................................................................31
3.5.3 MONITOR commands related to the Channels.............................................................................................32
3.5.3.1 Meaning of STATUS bits (value read in decimal Format) .............................................................................32
3.5.4 MONITOR commands related to themodule.................................................................................................33
3.5.4.1 Meaning of BoardAlarmbits.........................................................................................................................34
3.5.5 SET commands related to the Channels........................................................................................................34
3.5.6 SET commands related to the module............................................................................................................34
4Internal Settings..................................................................................................................................................................35
4.1 Polarityselection......................................................................................................................................................35
4.2 Internalswitches.......................................................................................................................................................37
4.2.1 Local Bus termination.........................................................................................................................................37
4.2.2 RS485 –RS232 conversion..............................................................................................................................37
4.3 Groundingspecifications.........................................................................................................................................37
4.3.1 Safety Earth connection.....................................................................................................................................38
LIST OF FIGURES
Fig.1.1: Mod. N1471 4 Channel Programmable HVPower Supply........................................................................................5
Fig. 2.1: Backplane NIMconnector................................................................................................................................................7
Fig. 2.2: Mod. N1471 series front panel (std, A, B, AL, AR) ......................................................................................................8
Fig. 2.3: Mod. N1471 series back panel (std., A, B) ...................................................................................................................9
Fig.2.4: Local control panel.........................................................................................................................................................10
Fig. 2.5: Channel control panel and Kill scheme......................................................................................................................10
Fig. 2.6: N1471 HVStatus control panel...................................................................................................................................11

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Fig. 2.7: N1470 ALARMelectrical scheme................................................................................................................................11
Fig. 2.8: N1470 ALARMTTL configured....................................................................................................................................11
Fig. 2.9: N1470 INTERLOCK electricalscheme.......................................................................................................................11
Fig.2.10: Remote communication control and RS485 I/O –RS232 IN electricalscheme................................................12
Fig. 2.11: HVChannel panel and test point electrical scheme...............................................................................................13
Fig. 3.1: Welcomescreen.............................................................................................................................................................17
Fig. 3.2: Channel OFF status screen.........................................................................................................................................17
Fig. 3.3: Channel ON status screen...........................................................................................................................................17
Fig. 3.4: Channel KILL status screen.........................................................................................................................................18
Fig. 3.5: Mode settings status screen.........................................................................................................................................18
Fig. 3.6: Mode settings access screen.......................................................................................................................................18
Fig. 3.7: Mode settings editscreen.............................................................................................................................................18
Fig. 3.8: Channel settings editscreen........................................................................................................................................19
Fig. 3.9: Channel VSET select screen.......................................................................................................................................19
Fig. 3.10: Channel VSET access screen...................................................................................................................................19
Fig. 3.11: Channel VSET digit selectionscreen.......................................................................................................................19
Fig. 3.12: Channel VSET digit access screen...........................................................................................................................20
Fig. 3.13: Channel VSET digit adjust screen............................................................................................................................20
Fig. 3.14: Channel VSET digit confirm screen..........................................................................................................................20
Fig. 3.15: Channel VSET confirm screen..................................................................................................................................20
Fig. 3.16: Channel VSET de-selectscreen...............................................................................................................................21
Fig. 3.17: Channel KILL screen...................................................................................................................................................21
Fig. 3.18: Channel EXIT screen..................................................................................................................................................21
Fig. 3.19: Group selection............................................................................................................................................................22
Fig. 3.20: Group active..................................................................................................................................................................22
Fig. 3.21: Group VSET access screen.......................................................................................................................................22
Fig. 3.22: Group VSET digit selection screen...........................................................................................................................22
Fig. 3.23: Group Channel VSET digit access screen..............................................................................................................23
Fig. 3.24: Group VSET digit adjust screen................................................................................................................................23
Fig. 3.25: Group VSET digit confirm screen..............................................................................................................................23
Fig. 3.26: Channel VSET de-selectscreen...............................................................................................................................23
Fig. 3.27: Group EXIT screen......................................................................................................................................................24
Fig. 3.28: USB communication diagram ....................................................................................................................................25
Fig. 3.29: RS232 communication diagram ................................................................................................................................25
Fig. 3.30: RS485 communication diagram ................................................................................................................................26
Fig. 3.31: Ethernet communication diagram .............................................................................................................................26
Fig. 3.32: RS232 port cable adapter...........................................................................................................................................27
Fig. 3.33: Main Menu ....................................................................................................................................................................27
Fig. 3.34: Board Status Menu......................................................................................................................................................28
Fig. 3.35: Channels Menu............................................................................................................................................................28
Fig. 3.36: PC keyboard.................................................................................................................................................................28
Fig. 3.37: Channels group setting...............................................................................................................................................29
Fig. 3.38: Firmware Upgrade Menu/1.........................................................................................................................................29
Fig. 3.39: Firmware Upgrade Menu/2.........................................................................................................................................29
Fig. 3.40: Format EEPROM Menu..............................................................................................................................................30
Fig. 3.41: Current offset calibration warning.............................................................................................................................30
Fig. 3.42: Current offset calibration VSET selection................................................................................................................30
Fig. 3.43: Current offset calibration confirmation......................................................................................................................31
Fig. 4.1: Side cover removal instructions...................................................................................................................................35
Fig. 4.2: Polarityselection instructions.......................................................................................................................................36
Fig. 4.3: Dip switch position.........................................................................................................................................................37
Fig. 4.4: C21 jumper location.......................................................................................................................................................38
Fig.4.5: Earth configuration connection examples..................................................................................................................39
LIST OF TABLES
Table 1.1: Available items...............................................................................................................................................................5
Table 2.1: Power requirements......................................................................................................................................................6
Table 2.2: Interlock operation......................................................................................................................................................12
Table 2.3: Mod. N1471 Channel technical specifications .......................................................................................................14
Table 3.1: Smileys list...................................................................................................................................................................24

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1 General description
1.1 Overview
Fig. 1.1: Mod. ProgrammableHVPowerSupply
The Mod. N1471 provi des 4 independent High Voltage channels i n a single width NIM mechanics. Two a nd one
cha nnel versions (N1471A and N1471B) a re a ls o a vai lable.
Ea ch channel can provide a ±5.5kV / 300 µA ma x output.
Channels have common floating return (common return ins ul ated from the crate ground); HV outputs are
del ivered through SHV connectors.
The HV output RAMP-UP a nd RAMP-DOWN rates may be s electe d independently for each channel i n the range
1÷500 V/s i n 1 V/s steps .
Safety fea tures include:
• OVERVOLTAGE and UNDERVOLTAGE wa rning when the output volta ge di ffers from
the programmed value by more than 2% of s et va lue (mi ni mum 10V).
• Programmable VMAX protecti on l imi t
• OVERCURRENT detection: if a channel tries to draw a current larger than its programmed limit, it enters TRIP
status, keeping the maximum al lowed va lue for a programmable time (TRIP), before bei ng swi tched off
• Channels ca n be ena bl ed or di sabled indi vidua ll y through the Interlock logi c.
Modul e control can take place either locally, assisted by a Graphic color display (not available on Mod.N1471AR)
or remotely, via USB, RS232 or RS485 (not available on Mod.N1471AL); the RS485 port a llows to build a N1471s’
da is y chain network (up to 32 modules).
For remote operation,CAEN also provides GECO2020, a graphical application that allows to manage the N14xx
HV Power Suppl ies (a s wel l a s al l other CAEN Power Supplies ).
Moreover, these units ca n be managed via CAEN HV Wrapper, a set of ANSI C functions bundled in a l ibrary,
providing the software developer an unified software interface for the control of CAEN Power Supplies. This is a
low l evel a pplication in which the writing of the Control SW is assigned to the user. CAEN HV Wrapper is logically
located between an higher level applicati on, s uch as GECO2020, a nd the lower layer s oftwa re l ibraries . It
conta ins a generic s oftware i nterface independent by the Power Supply models a nd by the communica tion path
us ed to exchange data with them. For more info pl ease vis it: www.caen.it (products >firmwa re/softwa re
section).
The Mod. A1480 is a n opti ona l DC Input Power Equali zer which al lows to us e a different i nput power
dis tribution on the N147x modules .
Table 1.1: Available items
Code
Item
Description
WN1471X05AAC
N1471
4 Ch NIM Programmable HV Power Supply (±5.5kV, 300µA, 5nA res.)
WN1471A05AAC
N1471A
2 Ch NIM Programmable HV Power Supply (±5.5kV, 300µA, 5nA res.)
WN1471B05AAC
N1471B
1 Ch NIM Programmable HV Power Supply (±5.5kV, 300µA, 5nA res.)
WA1480XAAAAA
A1480
DC Power Input Equalizer for N147X Family
WPERS0147001
Customization
Imon Zoom x10

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2 Technical specifications
2.1 Packaging
The Mod. N1471 boa rds are hous ed in s i ngle wi dth NIM module s .
2.2 Power requirements
Table 2.1: Power requirements
Board type
N1471
Channel configuration
without A1480
with A1480
N° chON
Current (±12V)
Current (±6V)
n° chON
Current (±12V)
Current (±6V)
3kV/300µA
4 CH
860 mA
< 10mA
4 CH
750 mA
800 mA
5.5kV/30µA
4 CH
720 mA
< 10mA
4 CH
630 mA
600 mA
5.5kV/300µA
4 CH
1.02 A
< 10mA
4 CH
800 mA
900 mA
Board type
N1471A,N1471AL, N1471AR
Channel configuration
without A1480
with A1480
N° chON
Current (±12V)
Current (±6V)
n° chON
Current (±12V)
Current (±6V)
3kV/300µA
2 CH
620 mA
< 10mA
2 CH
500 mA
500 mA
5.5kV/30µA
2 CH
550 mA
< 10mA
2 CH
440 mA
400 mA
5.5kV/300µA
2 CH
700 mA
< 10mA
2 CH
530 mA
600 mA
Board type
N1471B
Channel configuration
without A1480
with A1480
N° chON
Current (±12V)
Current (±6V)
n° chON
Current (±12V)
Current (±6V)
3kV/300µA
1 CH
530 mA
< 10mA
1 CH
370 mA
400 mA
5.5kV/30µA
1 CH
470 mA
< 10mA
1 CH
340 mA
300 mA
5.5kV/300µA
1 CH
500 mA
< 10mA
1 CH
380 mA
400 mA
WARNING: i f the A1480 i s not i nstalled, ±6V power s upplies are required only by older versi ons of the N1471;
such boards can be recognized by the presence of power pins 10 a nd 11 on the backplane NIM connector (s ee
fi gure 2.1). If the A1480 is not instal led, new vers ions operate onl y wi th ±12V power supplies .

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Fig. 2.1: BackplaneNIMconnector

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2.3 Frontandbackpanel
Fig. 2.2: Mod. N1471seriesfront panel(std, A, B, AL, AR)

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Fig. 2.3: Mod. N1471seriesback panel (std.,A, B)

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2.4 Frontpanelconnections
2.4.1 Local control section1
Fig. 2.4: Localcontrol panel
NAME:
TYPE:
FUNCTION:
MONITOR
1” OLED DISPLAY (96x64)
Local settings monitoring
TUNE
ROTARY SWITCH
Parameter and Mode setting
2.4.2 Channel control section
Fig. 2.5: Channel control panel and Kill scheme
NAME:
TYPE:
FUNCTION:
HV_EN/OFF/KILL
3 POS. SWITCH
Channel Enable and turning OFF/KILL2
ON
RED LED
HV On enabled
REMOTE KILL
AMP 280370-2
The channel is KILLED either as the +/- contacts are open or as a
+4÷6Vdc voltage is fed to pin - (see note)
+
GREEN LED
Positive polarity
-
YELLOW LED
Negative polarity
1Not available on Mod. N1471AR
2OFF: Channel turned off according to RAMP DOWN setting; KILL: Channel turned off at fastest availabl e rate