STEMlab 125-10 is more affordable compared to the 125-14 version, but that doesn’t mean it is lacking any important features or performance that is required for educational use.
STEMlab 125-10 supports all great software features 125-14 bit version has:
STEMlab |
125-10 |
125-14 |
WEB apps |
||
Oscilloscope |
Y |
Y |
Spectrum |
Y |
Y |
Logic analyzer |
Y |
Y |
Bode analyzer |
Y |
Y |
LCR meter |
Y |
Y |
VNA |
y |
Y |
SDR |
Y |
Y |
Streaming |
Y |
Y |
Marketplace |
Y |
Y |
Development |
||
SCPI server |
Y |
Y |
LabVIEW |
Y |
y |
Python |
Y |
y |
MATLAB |
y |
y |
C API |
y |
y |
Jupyter |
Y |
Y |
System |
||
Network manager |
y |
y |
OS update |
y |
y |
Cmd line tools |
||
generator |
Y |
Y |
acquire |
Y |
Y |
monitor |
Y |
Y |
Almost all hardware features are the same:
STEMlab 125-10 |
STEMlab 125-14 |
|
Basic |
||
Processor |
Dual-Core ARM Cortex-A9 MPCore |
Dual-Core ARM Cortex-A9 MPCore |
FPGA |
Xilinx Zynq 7010 |
Xilinx Zynq 7010 |
RAM |
256MB (4Gb) |
512MB (4Gb) |
System memory |
Micro SD up to 32GB |
Micro SD up to 32GB |
Connectivity |
||
Ethernet |
1 Gbit |
1 Gbit |
USB |
USB 2.0 |
USB 2.0 |
WIFI |
using Wi-Fi dongle |
using Wi-Fi dongle |
RF inputs |
||
Channels |
2 |
2 |
Sample rate |
125MS/s |
125MS/s |
ADC resolution |
10 bit |
14 bit |
Full scale voltage range |
+-1V / +-20V |
+-1V / +-20V |
Input coupling |
DC |
DC |
Bandwidth |
DC-50MHz |
DC-60MHz |
Input impedance |
1Mohm |
1Mohm |
RF outputs |
||
Channels |
2 |
2 |
Sample rate |
125MS/s |
125MS/s |
ADC resolution |
10 bit |
14 bit |
Full scale voltage range |
+-1V |
+-1V |
Load impedance |
50 ohm |
50 ohm |
Shortcut protection |
Yes |
Yes |
Typical raising/falling time |
2V / 10ns |
2V / 10ns |
Bandwidth |
DC - 60MHz |
DC - 60MHz |
Extension connector |
||
Digital IOs |
16 |
16 |
Analog inputs |
4 channels 0-3.5V 12bit |
4 channels 0-3.5V 12bit |
Analog outputs |
4 channels 0-1.8V 12bit |
4 channels 0-1.8V 12bit |
Communication interfaces |
I2C, UART, SPI |
I2C, UART, SPI |
Available voltages |
+5V, +3.3V, -4V |
+5V, +3.3V, -4V |
Synchronisation |
||
Trigger input |
through extension connector |
through extension connector |
Daisy chain connection |
N/A |
over SATA connection |
Main differences (125-10 vs 125-14):
125-10 has less DDR than 125-14 that is not crucial for education purposes
125-10 requires USB to serial adapter for serial console access (keep in mind these console is for normal use not needed, since user can access it over ethernet)
125-10 has no daisy chain connector for synchronization, anyhow sync. can still be done using GPIOs/triggering on extension connector
125-10 has 10bits ADC/DAC which is still more than enough for education purposes (higher resolution is mostly required / has benefits when using device for advanced applications like SDR)
Measurement comparison 125-10 vs 125-14:
Oscilloscope:
1MHz sine and square signal generated and measured with STEMlab
;
Spectrum:
10MHz sine signal generated and measured with STEMlab
;
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