PRELIMINARY
Document type: Title: Revision date: Revision:
User's Manual (MUT) N1471 4 Channel Programmable HV Power Supply 24/03/2010 1
NPO: Filename: Number of pages: Page:
00112/07:N1471.MUTx/01 N1471_REV1.DOC 38 7
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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