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4 Ch Reversible 500 V/200 µA NIM HV Power Supply Module (USB)


  • 4 independent channels in 1U NIM module (2 & 1 channel versions also available)
  • 500 V / 200 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 capabilty
  • Optional DC Input Power Equalizer
  • Software Tools for easy channel management


The Mod. N1419 provides 4 independent High Voltage channels in a single width NIM mechanics. Two and one channel versions (N1419A and N1419B) are also available. Each channel can provide a ±500V max voltage, a 200µA max current . 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 1÷50 V/s in 1 V/s steps.The module features 5 nA Iset/Imon resolution. Features include Imon Zoom, increasing resolution to 500 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 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
  • 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  (N1419A)
  • 1 channel version (N1419B)
  • 2U NIM module with 220 V/110 Vac plug for desktop operation, equipped with 2.8″ Touchscreen, Ethernet and USB interface (NDT1419)
  • 2U NIM module equipped with 2.8″ Touchscreen, Ethernet and USB interface (N1419ET)

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


Single width NIM unit

Output channels

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

Output ranges
500 V / 200 µA
500 V / 20 µA
(IMRANGE = High)
(IMRANGE = Low) – Imon Zoom Active
Max. Ch. Output Power

100 mW

Vset Resolution

10 mV

Vmon Resolution

10 mV

Iset Resolution

5 nA

Imon Resolution
5 nA
500 pA
(IMRANGE = High)
(IMRANGE = Low) – Imon Zoom Active

0 ÷ 510 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 % ± 0.5 V

Vmax resolution

± 0.1 V

Ramp Up/Down

1÷50 Volt/s, 1 Volt/s step


– 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: 5 mVpp
      Maximum: 10 mVpp

1 ÷ 20000 kHz:

      • Typical: 3 mVpp
      Maximum: 5 mVpp
Vmon vs. Vout Accuracy

±0.02% of read value ±500mV

Vset vs. Vout Accuracy

±0.02% of read value ±500mV

Imon vs. Iout Accuracy
±2% of read value ±20 nA
±2% of read value ±2 nA
(IMRANGE = High)
(IMRANGE = Low) – Imon Zoom Active
Iset vs. Iout Accuracy
±2% of read value ±30 nA
±2% of read value ±3 nA
(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. 50ppm / °C

Imon / Temperature coefficient

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

Long term stability Vout vs. Vset

± 0.02% (after one week @ constant temperature)


4 Ch Reversible 500 V/200 µA NIM HV Power Supply Module (USB)
Product page
  • Documentation
  • Software
  • Firmware


Name File extension File size Revision Last update
N1419x 4/2/1 Channel Reversible 500 V/200 µA NIM HV Power Supply Module (USB) PDF 1.80 MB 11 February 12th, 2021





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Precautions for Handling Storage Installation (ENG/ITA) PDF 179.29 kB - April 10th, 2019




Release Notes: 


Related Software Products

Name Description
SW1470 Control Software for NIM Power Supply Modules
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EPICS IOC (PSM - Power Supply Modules) EPICS IOC for Power Supply Modules
GECO2020 GEneral COntrol Software for CAEN HV Power Supplies
LabVIEW Driver (PSM - Power Supply Modules) LabVIEW Instrument Driver for Power Supply Modules


Compare with NIM High Voltage Power Supplies.



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

Ordering Options

Code Description
WN1419AXAAAA N1419A - 2 Ch NIM Progammable HV Power Supply (±500V, 200uA, 5nA res.)  RoHS
WN1419BXAAAA N1419B - 1 Ch NIM Progammable HV Power Supply (±500V, 200uA, 5nA res.)  RoHS
WN1419XAAAAA N1419 - 4Ch NIM Programmable HV Power Supply (±500V, 200uA, 5nA res.)  RoHS


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