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N1471

4 Ch Reversible 5.5 kV/300 µA NIM HV Power Supply Module (USB)

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Features

  • 4 independent channels in 1U NIM module (2 & 1 channel versions also available)
  • 5.5 kV / 300 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
  • 5 nA Current monitor resolution (with x10 Imon-Zoom: 500 pA)
  • Graphic color display
  • Local and Remote control (USB2.0/RS485/RS232)
  • Daisy-chain capability
  • Optional DC Input Power Equalizer
  • Software Tools for easy channel management
More info
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Overview

The CAEN 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 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.
The HV output Ramp-up and Ramp-down rates may be selected independently for each channel in the range 1В500 V/s in 1 V/s steps. The module features 5nA Iset/Imon resolution. A Zoom option (x 10) is available for Imon, increasing resolution to 500pA.

blank SHV connector

NIM single width, 4 channels for Mod. N1471 (2 Ch for N1471A, 1 Ch for N1471B)

Consult our connectors reference page for technical information.

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:

Overvoltage and Undervoltage warning when the output voltage differs from the programmed value by more than 2% of set value (minimum 10V).
Overcurrent detection when a channel attempts to exceed the programmed current limit, it signalled to be in “overcurrent” and enter in a TRIP status. The output voltage is varied to keep the current below the programmed limit for a programmable TRIP time, then the channel is switched off. If TRIP is set to “constant current mode”, the channel behaves like a current generator.
VMAX
 programmable VMAX 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 (N1471A)
  • 1 channel version (N1471B)
  • 4 channels, 2U NIM module with 220/110 Vac plug for desktop operation, equipped with 2.8″ Touchscreen, Ethernet and USB interface (NDT1471)
  • 4 channels, 2U NIM module equipped with 2.8″ Touchscreen, Ethernet and USB interface (N1471ET)
  • High-resolution models: 20µA max output, Iset/Imon: 1 nA, optional Imon-Zoom: 50 pA (N1471H, NDT1471H and N1471HET)

Available Options:

  • A1480 DC Input Power Equalizer.
  • x 10 Imon Zoom, increasing Imon resolution to 500 pA.

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 / 300 µA (IMRANGE = High)
  • 5.5 kV / 30 µA (IMRANGE = Low) – Imon Zoom Active (optional)
Max. Ch. Output Power

1.65 W

Vset / Vmon Resolution

100 mV

Iset Resolution

5 nA

Imon Resolution
  • 5 nA        (IMRANGE = High)
  • 500 pA   (IMRANGE = Low) – Imon Zoom Active (optional)
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: 10 mVpp / Maximum: 15 mVpp
  • 1 ÷ 20000 kHz: Typical: 3 mVpp / Maximum: 8 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 ±20 nA   (IMRANGE = High)
  • ±2% of read value ±2 nA     (IMRANGE = Low) – Imon Zoom Active (optional)
Iset vs. Iout Accuracy
  • ±2% of read value ±30 nA   (IMRANGE = High)
  • ±2% of read value ±3 nA     (IMRANGE = Low) – Imon Zoom Active (optional)
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 X10 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
A148x
Inhibit - Kill Signal BNC Adapter for HV Power Supply Modules
HV Cables
High Voltage Cable Assemblies
A1480
DC Power Input Equalizer for N14XX Family

Ordering Options

Code Description
WN1471A05AAC N1471A - 2 Ch NIM Programmable HV Power Supply (±5.5kV, 300µA, 5nA res.)   RoHS
WN1471B05AAC N1471B - 1 Ch NIM Programmable HV Power Supply (±5.5kV, 300µA, 5nA res.)   RoHS
WN1471X05AAC N1471 - 4 Ch NIM Programmable HV Power Supply (±5.5kV, 300µA, 5nA res.)   RoHS

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