OHMRANGER
Features*
- Low stimulus voltages, selectable between approx 380mV or approx 205mV.
- Stimulus voltage at the output terminal limited by the maximum current supply of approx 20mA.
- Accurate readings from >100M to 10 Ohms.
- A 128 x 64 LCD display gives a wealth of information about your Resistance readings.
- A large display shows M Ω, K Ω, and Ω, all on one line.
- Readings every 400mS, built up from 160 samples and averaged to tune out mains noise (both 50 Hz and 60 Hz).
- Fully isolated USB Interface for device control and readings export.
- SNR display indicates noise level on signal.
- On-screen confirmation of stimulus voltage.
- Range Bar movement after every reading shows that Ω hmRanger-LCV ™ is operating correctly.
- Range Coverage Bar shows the ranges covered during the measurement.
- User-configurable Auto Power-off timer.
- Ω hmRanger-LCV ™ is highly portable with dimensions of 148 x 90 x 30mm.
- 2 x AA batteries should give around 150 hours of operation.
- 2 Year Standard Warranty.
*Features may be subject to change.
Ω hmRanger-LCV ® - the affordable Low Compliance Voltage Ohmmeter.
Why the Ω hmRanger-LCV ®?
You need to measure the resistance of a component, but that component is delicate. Most ohmmeters will apply a stimulus voltage to the Device Under Test (DUT) of 3-10V. This stimulus voltage may destroy what you are trying to investigate! The solution is a Low Compliance Voltage ohmmeter, where the stimulus voltage is small and regulated.
With the Ω hmRanger-LCV ®, stimulus voltage is always less than 400mV.
For Example...
The Josephson Junction is the Quantum Computer's equivalent of a 'transistor'. Although it is delicate, the Ω hmRanger-LCV ® can measure its resistance without risking its integrity.
D-Wave Systems, the Quantum Computing systems and services company, needs to measure the resistance of their Josephson Junctions. Working closely, a prototype Low Compliance Voltage Ohmmeter was quickly developed and the design was subsequently refined through testing and practical lab use. The result is the Ω hmRanger-LCV ®, the low compliance voltage ohmmeter, scheduled for general release in late March 2022.
On completion of test and evaluation, D-Wave commented:
"The AltoNovusΩhmRanger-LCV® turned an error-prone measurement into a simple measurement .. a valuable addition to our work building quantum computers."
The fundamental element in D-Wave’s unique product is a Josephson Junction - this is the "transistor" in a quantum computer. In practice, these devices are extremely sensitive and easy to damage. Measuring the resistance with a standard multimeter will destroy the Josephson Junction.
AltoNovus is delighted to work with D-Wave in refining this exciting product: Individually factory-calibrated, Ω hmRanger-LCV ® measures from >100M down to 10 Ohms, with errors <1% across the range. It has:
- 2 low stimulus voltages:
- Approx 380mV (default), and
- Approx 205mV.
- Stimulus voltage at the output terminal is limited by the maximum current supply of approx 20mA.
- A configurable audible signal to inform the operator that a stable reading has been achieved.
- A fully isolated USB interface for device control and data export. Being fully isolated means attaching a USB cable should not affect your measurements.
WHAT'S IN THE BOX?
It'll just be the Ω hmRanger-LCV ®! We do not currently supply 2 x AA batteries, Probes, or Carry Cases.
Please note - Due to Customs processes beyond their control, Royal Mail shipping to our overseas customers can sometimes take longer than their stated delivery aim. If you need your order urgently, please choose your shipping option accordingly.
DOWNLOAD THE LATEST DOCUMENTATION.
Download the latest Instruction Manual and Quick Start Guide below, for devices running software V2.20 and later.