Programmable HV Power Supply
Revision 19
n
CAEN
T o o l s f o r D i sc o v e r y
1 General description
1.1 Overview
Fig. 1.1: Mod. Programmable HV Power Supply
The Mod. N1471 provides 4 i ndependent High Voltage channels i n a s ingle width NIM mechanics. Two and one
cha nnel vers ions (N1471A and N1471B) a re a ls o avai l able.
Ea ch cha nnel can provide a ±5.5kV / 300 µA ma x output.
Channels have common floating return (common return ins ulated from the crate ground); HV outputs are
deli vered through SHV connectors.
The HV output RAMP-UP a nd RAMP-DOWN rates may be selected independently for each channel in the range
1÷500 V/s in 1 V/s s teps .
Safety features incl ude:
• OVERVOLTAGE and UNDERVOLTAGE warning when the output volta ge differs from
the programmed va l ue by more tha n 2% of set value (mi nimum 10V).
• Programma ble VMAX protection l imit
• OVERCURRENT detection: if a channel tries to draw a current larger than its programmed limit, it enters TRIP
sta tus, keeping the maximum all owed va l ue for a programmabl e ti me (TRIP), before being s witched off
• Channels can be enabled or di s abled i ndividuall y through the Interl ock logic.
Modul e control can take place either locally, assisted by a Graphic color display (not available on Mod.N1471AR)
or remotely, vi a USB, RS232 or RS485 (not available on Mod.N1471AL); the RS485 port allows to build a N1471s’
da i s y cha in network (up to 32 modules).
For remote operation, CAEN also provides GECO2020, a graphical application that allows to manage the N14xx
HV Power Supplies (as well a s al l other CAEN Power Suppl i es).
Moreover, these units can be managed vi a CAEN HV Wrapper, a set of ANSI C functions bundled i n a libra ry,
providing the software developer an unified s oftware interface for the control of CAEN Power Supplies. This is a
low level a pplication in which the writing of the Control SW is assigned to the user. CAEN HV Wrapper is logically
loca ted between a n higher level a pplication, s uch as GECO2020, and the lower la yer s oftware l i braries. It
conta ins a generic software interface independent by the Power Supply models and by the communication path
us ed to exchange data with them. For more i nfo pl ea se vis i t: www.caen.it (products >fi rmwa re/software
section).
The Mod. A1480 is a n optiona l DC Input Power Equal i zer which a llows to us e a different input power
dis tribution on the N147x modules .
Table 1.1: Available items
4 Ch NIM Programmable HV Power Supply (±5.5kV, 300µA, 5nA res.)
2 Ch NIM Programmable HV Power Supply (±5.5kV, 300µA, 5nA res.)
1 Ch NIM Programmable HV Power Supply (±5.5kV, 300µA, 5nA res.)
DC Power Input Equalizer for N147X Family
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