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NL Series - Source-Sink - Discontinued!

Features of performance
Model overview

NL Series Discontinued!

  • Voltage up to 100 V
  • Current up to 320 A
  • 2-quadrant or 4-quadrant versions
  • Source-sink function
  • Rapid control time
  • Current, voltage mode
  • Adjustable limitations
  • SCPI programming with measurement function
  • RS-232 + USB (as standard)
  • GPIB (optional)
  • Ethernet-RS-232-Konverter (optional)
  • Data Acquisition Tool (optional, synchronized fast measurement data acquisition)
  • Programmable waveform
  • Software tools for battery testing
  • Analog measurement outputs for voltage and current
  • Analog control inputs
  • 2 free calibrations

NL Series Discontinued!

Operating Modes
The NL source-sinks can operate in constant voltage or constant current mode. In voltage mode there are two current limiters (source current and sink current) which can be adjusted independently of one another. In current mode, an upper and a lower limit voltage can be set.
Source-Sink Mode
Depending on the preset output value and the characteristics of the connected test unit, the device automatically decides whether to operate as a source or a sink. Switching from source to sink mode is very rapid.
2-Quadrant /4-Quadrant Mode
Devices for two-quadrant mode can supply or receive current with a positive output voltage. To guarantee the required function in the case of settings close to 0 V and long connection leads, the 2-quadrant devices start to operate from an output voltage of -1 V. The 2-quadrant devices therefore also act as 4-quadrant devices but with limited negative voltage. 4-quadrant devices can set equal absolute values in the positive and negative range.
Remote Control
Most source-sink functions can be controlled remotely via the standard Analog I/O Interface. Operating mode selection, output on - off and setting of control speed can be set with logic levels. A version (NL06) which is electrically isolated from the output is optionally available.
Analog Control Inputs
Depending on the selected operating mode the output voltage or output current can be preset by control voltage 0 ... ±5 V or 0 ... ±10 V DC. There are two further analog inputs available to limit the voltage or current.
Analog Measurement Outputs
For voltage and current there are 0...10 V analog measurement signals available. The signals follow the curve shape.
The units are air-cooled. To keep the operating noise low, the fans are controlled depending on temperature and current.
The NL series is a sturdy 19“ rack design and can also be installed in a cabinet or act as a table-top device. From 5 height units there are retractable handles on the top of the device. Optional castors can be mounted on heavy devices. No separate installation kits are not needed for 19“ rack installation.
All connections are at the rear side. The current connections are pole terminals or solid copper rails with screw terminals. 4mm plugs, forked cable lugs and stripped cables can be used.
Covers are available for outputs as contact protection for units for dangerous contact voltages.
Data Interfaces
  • RS-232 + USB (standard)
  • GPIB (optional)
  • Ethernet-RS-232 Converter (optional)
  • Data Acquisition Tool
  • Synchronized fast data acquisition
Hardware Expansions (optional)
  • Electrically Isolated Analog I/O Interface
  • Power I/O Card
  • Castors
A free Factory Calibration Certificate (FCC) is supplied with the devices. The calibration process is subject to supervision in accordance with DIN EN ISO 9001. The calibration certificate documents the traceability to national standards to illustrate the physical device in accordance with the international System of Units (SI). Within the 2-year warranty period, we will calibrate a second time free of charge if the respective device (serial number) will have been registrated at H&H.
--> Conditions for a second free calibration
For use under laboratory conditions, H&H recommends a calibration interval of 2 years. This is an empirical value that can be used as a guide for the first period of use. Depending on the intended use, service life, relevance of the application and ambient conditions, the operator should adjust this interval accordingly.
Software Tools
The H&H Homepage has a program library for Windows with a control tool and LabVIEW drivers.
Each device is supplied with a user manual as PDF file and printed General Safety Instructions, each in German and English.

Series NL

NL Unipolar - 2-Quadrants

NL models for operating in two-quadrant mode.

NL Bipolar - 4-Quadrants

NL models for operating in four-quadrant mode.


Control software for NL series
LabVIEW® driver for NL series
Software tool for transmission of single commands via GPIB/RS-232/Ethernet/CAN