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N1471H

4 Ch Reversible 5.5 kV/20 µA NIM HV Power Supply High Accuracy Module (USB)

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Features

  • 4 independent channels in 1U NIM module (2 & 1 channel versions also available)
  • 5.5 kV / 20 µA output range
  • Channels with individually selectable positive or negative polarity
  • SHV output connectors
  • Common floating return
  • Low Ripple
  • Under/over-voltage alert, overcurrent and max. voltage protection
  • Interlock logic for board enable and Individual channel kill
  • 1 nA Current monitor resolution (with x20 Imon-Zoom: 50 pA)
  • Graphic color display
  • Local and Remote control (USB2.0/RS485/RS232)
  • Daisy-chain capabilty
  • Optional DC Input Power Equalizer
  • Software Tools for easy channel management
More info
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Overview

The CAEN Mod. N1471H provides 4 independent High Voltage channels in a single width NIM mechanics. Two and one channel versions (N1471HA and N1471HB) are also available. Each channel can provide a ±5.5kV / 20 µA output. The output polarity is independently selectable for each channel.

Channels have common floating return (common return insulated from the crate ground); HV outputs are delivered through SHV connectors.

blank SHV connector

NIM single width, 4 channels for Mod. N1471H, N1471HA (2 Ch), N1471HB (1 Ch)

Consult our connectors reference page for technical information.

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. The module features 1nA Iset/Imon resolution. Zoom for Imon increases resolution to 50 pA. Power supply control can be performed either locally, assisted by a Graphic color display or remotely, via USB, RS232 or RS485, the latter allowing to build a daisy chain network of modules N14XX. It is also controllable via TCP/IP by the Smart Fan Unit of CAEN NIM8301.

A complete set of free software Tools is available to control this unit: GECO2020 with user friendly GUI and CAEN HV Wrapper library for custom SW development. EPICS and LabVIEW also supported.

Safety features allows the module to perform as a current generator and includes:

Channels
 can be enabled or disabled through the Global Interlock logic.
Overvoltage and Undervoltage warning when the output voltage differs from the programmed value by more than 2% of set value (minimum 10V).
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.
Hardware VMAX
 programmable MAX protection limit.
Safety Board Interlock common Interlock logic for channels enable/disable and individual inputs signal for channel Kill function.

Module control can take place either locally, assisted by a Graphic colour display, or remotely, via USB (1) or RS485 (1). It is also controllable via TCP/IP (2) by the Smart Fan Unit of CAEN NIM 8301 crate:

Special versions available:

  • 2 channels version  (N1471HA)
  • 1 channel version (N1471HB)
  • 2U NIM module with 220/110 Vac plug for desktop operation equipped with 2.8″ Touchscreen, Ethernet and USB interface (NDT1471H)
  • 2U NIM module equipped with 2.8″ Touchscreen, Ethernet and USB interface (N1471HET)

Available Options:

  • A1480 DC Input Power Equalizer.

N14xx modules are provided with a USB VCP interface and can be programmed via PC by connecting the PC USB port with the N14xx USB B-type port; the featured controller (FT232BM chip) requires a driver available on this page or at www.ftdichip.com

Technical Specifications

Packaging

Single width NIM unit

Output Channels

4 / 2 / 1 channels, Common Floating Return, SHV connector Positive or Negative Polarity (requires internal setting)

Output ranges
5.5 kV / 20 µA
5.5 kV / 2 µA
(IMRANGE = High)
(IMRANGE = Low) – Imon Zoom Active
Max. Ch. Output Power

0.11 W

Vset Resolution

100 mV

Vmon Resolution

100 mV

Iset Resolution

1 nA

Imon Resolution
1 nA
50 pA
(IMRANGE = High)
(IMRANGE = Low) – Imon Zoom Active
Vmax

0 ÷ 5600 V Absolute maximum HV level that the channel is allowed to reach, independently from the preset value Vset. Output voltage cannot exceed the preset value Vmax. The accuracy is 1 % ± 5 V

Vmax resolution

± 1 V

Alarm output

Open collector, 100 mA maximum sink current

Interlock input

LOW: < 1 V; current~5mA; HIGH: 4÷6 V

Ramp Up/Down

1÷500 Volt/s, 1 Volt/s step

Trip
  • Max. time an “overcurrent” can last (seconds). A channel in “overcurrent” works as a current generator; output voltage varies in order to keep the output current lower than the programmed value.
  • “Overcurrent” lasting more than set value (1 to 9999) causes the channel to “trip”.
  • Output voltage will drop to zero either at the Ramp-down rate or at the fastest available rate, depending on Power Down setting; in both cases the channel is put in the OFF state.
  • Trip range: 0 ÷ 999.9 s; 1000 s = INFINITE. Step = 0.1 s (If trip= INFINITE, “overcurrent” lasts indefinitely).
Voltage Ripple
20 ÷ 1000 Hz

Typical: 12 mVpp; Maximum: 20 mVpp

 1 ÷ 20000 kHz

Typical: 2 mVpp; Maximum: 5 mVpp
Vmon vs. Vout Accuracy

±0.02% of read value ±2V

Vset vs. Vout Accuracy

±0.02% of read value ±2V

Imon vs. Iout Accuracy
±2% of read value ±2 nA
±2% of read value ±200 pA
(IMRANGE = High)
(IMRANGE = Low) – Imon Zoom Active
Iset vs. Iout Accuracy
±2% of read value ±3 nA
±2% of read value ±300 pA
(IMRANGE = High)
(IMRANGE = Low) – Imon Zoom Active
Humidity range

0 ÷ 80%

Operating temperature

0 ÷ 45°C

Storage temperature

-10 ÷ 70°C

Vout / Temperature coefficient

max. 50 ppm / °C

Imon / Temperature coefficient

max 100 ppm/C°; max 300 ppm/C° with Imon zoom

Long term stability Vout vs. Vset

± 0.02% (after one week @ constant temperature)

Compare

Compare with NIM High Voltage Power Supplies.

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Accessories

A1481
Kill Signal Adapter for N14XX series
HV Cables
High Voltage Cable Assemblies
A148x
Inhibit - Kill Signal BNC Adapter for HV Power Supply Modules
A1480
DC Power Input Equalizer for N14XX Family

Ordering Options

Code Description
WN1471HA05AC N1471HA - 2 Ch NIM Programmable High CurrentRes. HV Power Supply (±5.5kV, 20µA, 1nA res.)   RoHS
WN1471HB05AC N1471HB - 1 Ch NIM Programmable High CurrentRes. HV Power Supply (±5.5kV, 20µA, 1nA res.)   RoHS
WN1471HX05AC N1471H - 4 Ch NIM Programmable High CurrentRes. HV Power Supply (±5.5kV, 20µA, 1nA res.)   RoHS

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