top of page

USB Model 101

Model 101

6½ Digit USB Picoammeter

AX_101_PR_wide.jpg

​

  • USB interface

  • 2 nA to 20 mA full scale

  • 1 fA resolution

  • 6½ digit resolution

  • < 100 μV burden voltage

  • Up to 3500 readings per second

  • AutoZero drift compensation

  • All solid-state range switching

  • 300 V isolation from chassis

  • 0 to ±10 V 20 mA bias source

  • LabVIEW™ and .NET drivers

  • Easy and intuitive Windows user interface

​

Downloadable Data Sheet

The Model 101 Picoammeter couples fast and accurate measurements in a low cost instrument. It provides ranges, resolution, and accuracy that often exceed those typically found in more expensive instruments for legacy suppliers, providing quiet, stable measurements, and fast response times.

Technical Features

 

AutoZero Function
The unit is equipped with an AutoZero function that ensures that the input burden voltage remains as close to zero as possible, thus compensating for time and temperature induced drifts.

​

Solid State Switching
Solid state range switching eliminates the uncertainties associated with electromechanical relays.

​

Isolation
The Model 101 can float up to ±300 V from earth ground permitting accurate high-side current measurements.

​

Data Interface
The unit is equipped with an USB interface that is easier to use, more cost effective than GPIB or RS-232 and eliminates non-native operating system support, expensive GPIB cards and expensive cables.

​

Bias Supply
The quiet programmable voltage bias supplies ensure stable current measurements. These supplies have fine resolution to allow precise adjustment. The voltages can be monitored by the measurement system to verify the actual voltages, characterizing the low-current regions of semiconductors, and high-megohm resistance measurements.

​

Data Display
The Model 101 Picoammeter leverages the user’s computer for data display since typically users use their PC for storage, analysis, or reporting, rendering an additional display redundant.

​

Soft Front Panel
The intuitive user interface provides control, display, and data logging functions.

​

User Created Interface
The Model 101 Picoammeter provides powerful APIs for data acquisition and control. Support for user-written software in Visual Studio® or LabVIEW™.​

Measurements*

​

  • Input Voltage Burden: < 100 μV on all ranges except 20 mA range < 1 mV with AutoZero enabled

  • Maximum Common Mode Voltage: 300 V to chassis

  • Maximum Voltage Between Inputs High & Low Without Damage: 250 V

  • Meter Low-to-Chassis Isolation: greater than 1011 Ω || 4 nF

  • NMRR: > 100 dB at 50/60 Hz at integer line cycle sample rates

  • Temperature Coefficient Outside of 23 °C ±5 °C: include an additional 0.05 x % rdg / °C to the accuracy specification 

  • Measurement Rates: 1.9, 7.7, 39, 45 measurements per second with line cycle noise rejection 150, 300, 900, 1800, 3500 measurements per second for higher speed

  • Maximum Input Capacitance: Stability guaranteed up to 100 nF

  • Input Connector: Safety BNC

​

Low-Voltage Bias Supply
 

  • Output Range: 0 to ±10 V, with 0 to ±20 mA load

  • Output Accuracy: ±(0.1% of setting +6.0 mV)

  • Output Noise: 1 mV P-P 0-10 Hz

  • Output Resolution: 2.5 mV

  • Output Measurement Accuracy: ±(0.05% of setting +2.5 mV)

  • Output Measurement Resolution: 300 μV

​​

Environmental

​

  • Operating Temperature: 0 °C to 50 °C

  • Storage Temperature: -40 °C to 70 °C

  • Humidity: non-condensing

  • Environmental: IP41

  • Altitude: < 2000 meters

  • Pollution Degree: 2

​

General Specifications

​

  • Communications: USB 2.1 full-speed mode

  • Vibration: MIL STD 810E Category 1 and 10

  • Safety: IEC/EN 61010-1:2010

  • EMC Compliance: IEC61326-1:2005

  • Power: The Model 101 does not draw power from the USB port. It must be powered by the included external power supply or from any external 7 VDC to 32 VDC supply.

  • External Power: connector XLR

  • Power Consumption: < 6 W

  • Dimensions: 43.7 mm high x 216 mm wide x 254 mm depth (1.72 in x 8.5 in x 10.0 in)

  • Weight: 430 g (0.95 lb)

  • Calibration cycle: 1 year

  • Warm-up Time: 15 minutes to 2 °C of final operating temperature

​

Included

​

  • CD with software and manual

  • PS1 100 V to 250 V 50/60 Hz input power supply

  • USB cable 1 m

​

Accessories
The Model 101 can be expanded with a variety of accessories.

​

  • Current Calibrator: NIST traceable kit for calibrating the current ranges of a Model 101; BNC cable, banana cables included**

  • Pwr-1: Mains to 12 V supply with power cable and output cable for Model 101

  • Cable-2: USB Male A to Male B

  • Cable-3: 1-XLR-F to 3-XLR-M allows up to 3 Model 101s to be powered by one power supply

  • Cable-4-L: Safety BNC to Safety BNC, (user-specified length) of RG5

​

*  Specifications shown on www.ametrixinst.com supersede all others and are subject to change without notice.

​

**  User must supply a traceable DMM, Keysight Technologies Model 34401, or Keithley Model 2000, or better. Model 101 uses the internal low-voltage bias supplies.

bottom of page