Red Pitaya Software Apps

Red Pitaya series apps

Note: The software apps are free. To use the Red Pitaya modules with these apps additional hardware options are required (logic analyzer, LCR meter, VNA). This hardware is available as optional accessories.

Red Pitaya App: Oscilloscope and Signal Generator

Red Pitaya App: Oscilloscope and Signal-Generator

Main features Run/stop and auto set functionality. Signal position and scale controls. Trigger controls (source, level, slope). Trigger modes: Auto, normal and single triggering. Input calibration wizard. Cursors. Measurements. Math operations. Signal generator controls (waveform, amplitude, frequency, phase).
Recommended optional accessories: Oscilloscope probes (included in some of the kits)
Oscilloscope
Model STEMlab 125-14 SDRlab 122-16 SIGNALlab 250-12
Input channels 2 2 2
Bandwidth 50 MHz 300 kHz...55 MHz 60 MHz
Resolution 14 bit 16 bit 12 bit
Memory depth 16 kS 16 kS 16 kS
Input range ±1 V (LV) and ±20 V (HV) ±0.5 V/+4 dBm ±1 V/±20 V2)
Input coupling DC AC DC/AC2)
Minimal voltage sensitivity ±0.122 mV/±2.44 mV ±7.6 µV ±0.488 mV/±9.76 mV
External trigger through extension connector through extension connector through BNC connector
Signal Generator
Model STEMlab 125-14 SDRlab 122-16 SIGNALlab 250-12
Output channels 2 2 2
Frequency range 0...50 MHz 300 kHz...55 MHz 0...60 MHz
Resolution 14 bit 14 bit 12 bit
Signal buffer 16 kS 16 kS 16 kS
Output range ±1 V ±0.25 V/-2 dBm (into 50 Ω load)
±0.5 V/+4 dBm (into HI-Z load)		 ±1 V/±5 V (into 50 Ω load)
±2 V/±10 V (into Hi-Z load)2)
Input coupling DC AC DC
Output load 50 Ω 50 Ω 50 Ω

1) set by jumpers. 2) set by software.

Red Pitaya App: Spectrum Analyzer

Red Pitaya App: Spectrum Analyzer

 
Spectrum Analyzer
Model STEMlab 125-14 SDRlab 122-16 SIGNALlab 250-12
Input channels 2 2 2
Bandwidth 0...62 MHz 300 kHz...62 MHz 0...62 MHz
Resolution 14 bit 16 bit 12 bit
DFT buffer 16384 16384 16384
Dynamic range 80 dBm 96 dB 74 dB
Input range 10 dBm 4 dBm 10 dBm
Input impedance 1 MΩ/10 pF 50 Ω 1 MΩ/10 pF
Input coupling DC DC DC
Spurious frequency components 90 dBFS typ. 90 dBFS typ. 90 dBFS typ.

Red Pitaya App: Bode Analyzer

Red Pitaya App: Bode Analyzer

Bode Analyzer
Model STEMlab 125-14 SIGNALlab 250-12
Frequency span 1 Hz...20 MHz 1 Hz...20 MHz
Frequency resolution 1 Hz 1 Hz
Excitation signal amplitude 0...1 V 0...1 V
Excitation signal DC bias 0...0.5 V 0...0.5 V
Resolution 14 bit 12 bit
Maximum number of steps per measurement 1000 0...0.5 V
Maximum input amplitude ±1 V or ±20 V1) ±1 V or ±20 V1)
Measured parameters Gain, phase Gain, phase
Frequency sweep modes Linear/logarithmic Linear/logarithmic

1) set by jumpers. 2) set by software.

Red Pitaya App: Logic Analyzer

Red Pitaya App: Logic Analyzer

 
Required hardware Logic analyzer extension module: Enables different logic levels, board protection and higher performance. Compatible with STEMlab 125-14 or SDRlab 122-16 board!
Model Basic Logic Analyzer Logic Analyzer PRO
Channels 8th 8th
Sampling rate (max.) 12 ms/s 125 ms/s
Maximum input frequency 3 MHz 50 MHz
Supported bus protocols I2C, SPI, UART I2C, SPI, UART
Input voltage 3.3 V 2.5...5.5 V
Overload protection – integrated
Level thresholds – 0.8 V (low), 2.0 V (high)
Input impedance – 100 kΩ, 3 pF
Trigger types Level, edge, pattern Level, edge, pattern
Memory depth 1 MS (typ.) 1 MS (typ.)
Sampling interval 84 ns 8 ns
Minimum pulse duration 100 ns 10 ns

Red Pitaya App: LCR Meter

Red Pitaya App: LCR Meter

To use the STEMlab 125-14 as an LCR meter, the LCR meter option is required. The option includes the following hardware:

  • LCR meter board (295 mm x 115 mm x 33 mm).
  • Ribbon cable.
  • SMA-to-SMA cable.
  • 2x clip probes.

Red Pitaya App: Vector Network Analyzer

Red Pitaya App: Vector Network Analyzer

Model Vector Network Analyzer for STEMlab 125-14
Applications Test and optimize the performance of antennas (SWR/return loss, S11), RF filters, RF switches, couplers, cables, amplifiers, isolators, mixers.
Note: To use the VNA application an additional VNA bridge module is needed. VNA is a contributed Python application by Pavel Demin that runs on a Windows or Linux OS.
Software features Plot formats: Smith chart, impedance, SWR, ref. coeff, return loss
Supported calibration modes (open, short, load)
Measurement export
Marker readouts
PC-controlled over LAN/Ethernet of Wi-Fi from a Microsoft Windows interface
Hardware specifications Frequency range 500 kHz...62 MHz
Directivity typ. 42 dB
Dynamic range 74 dB
Noise floor -88 dBm