Description
STEMlab 125-14 is an open source measurement and control tool in size of a credit card. It can replace many expensive laboratory measurement instruments. The STEMlab 125-14 unit is a network attached device based on Linux operating system. It includes Radio Frequency signal acquisition and generation technologies, FPGA, Digital Signal Processing and CPU processing. The STEMlab 125-14 unit is equipped with a Micro USB socket used for console connection, a microSD slot for microSD memory card, a RJ45 socket for Ethernet connection and a USB socket used for standard USB devices.
Feature
- High performance hardware at a surprising price tag
- Replaces most essential instruments: (Oscilloscope, Spectrum analyser, Signal generator, LCR meter)
- LAN or wireless access from any WEB browser via tablet or a PC regardless of the OS (MAC, Linux, Windows, Android, iOS)
- LabView and MATLAB interface
- Possibility to make your own application and share it with others
- Open source software
RF inputs
- Number of channels: 2
- Bandwidth: 50 MHz (3 dB)
- Sample rate: 125 Msps
- Input impedance: 1 MΩ / 10 pF
- Connector: SMA-F
RF outputs
- Number of channels: 2
- Bandwidth: 50 MHz
- Sample rate: 125 Msps
- Load impedance: 50 Ω
- Connector: SMA-F
Auxiliary analog input channels
- Number of channels: 4
- Nominal sampling rate: 100 ksps
• ADC resolution: 14 bit
- Input voltage range: 0 to +3.5 V
- Input coupling: DC
- Connector: IDC connector
Auxiliary analog output channels
- Number of channels: 4
- Output type: Low pass filtered PWM
- PWM time resolution: 4ns (1/250 MHz)
- Output voltage range: 0 to +1.8 V
Dimensions: 107 x 60 x 21 mm
Calibration
Calibration is performed in noise controlled environment. Inputs and outputs gains are calibrated with 0.02% and 0.003% DC reference voltage standards. Input gains calibration is performed in medium size timebase range. STEMlab 125-14 is non-shielded device and its inputs/outputs ground is not connected to the earth grounding as it is in case of classical Oscilloscopes. To achieve calibration results given below, STEMlab 125-14 must be grounded and shielded.
| Inputs |
|
|
|
| LV settings (+/- 1 V range) |
|
LV settings (+/- 1 V range) |
|
| DC gain accuracy @ 122 kS/s |
DC offset @ 122 kS/s |
DC gain accuracy @ 122 kS/s |
DC offset @ 122 kS/s |
| 0.2 % |
+/- 0.5 mV |
0.4 % |
+/- 2 mV |
| Outputs |
|
|
|
| DC offset |
|
DC gain accuracy |
Ripple @ 0.5V DC |
| +/- 4 mV |
|
0.4 % |
0.4 mVpp |
Included
- 1x STEMlab 125-14 board with calibrated Inputs and Outputs
- 1x Aluminium case
- 1x micro USB power supply adaptor
- 1x microSD card (4 GB) with pre-installed OS
- 1x Ethernet cable (1 m)
- 2x Osciloscope probes
- 2x SMA to BCN adapter
- 2x 50 ohm termination
- 2x SMA T adapter
- 1x WIFI dongle
