OSA103F
PC based USB multifunction measuring device

  • Multi-Channel Mixed Signal Oscilloscope
  • Multi-Function Generator
  • Frequency Meter
  • Spectrum Analyzer
  • Frequency & Phase Response Analyzer
  • Vector Antenna Analyzer (single port VNA)
  • LC Meter
  • Reflectometer
  • SDR Transceiver

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Oscilloscope
1 analog channel + 4 digital channels + virtual analog generator channel.
Analog channel input impedance: switchable 1 MOhm or 50 Ohms.
Analog channel bandwidth: 350 MHz.
Analog channel real time sample rate: 200 MSPS.
Equivalent time sample (ETS) rate: 10 GSPS.
Memory up to 40,000 samples per channel.
Basic input sensitivity: 0.1 V/Div, 20 mV/Div.
Digital channels have adjustable threshold levels and a real time sampling rate of 1.6 GSPS.
The analog generator channel provides a visualisation of the generator output and can also be used as a triggering source.
Additional flexible fully digital triggering modes.
Fully digital ETS mode that provides stable triggering from noisy and high frequency (up to 1 GHz) signals.
Peak detector and a high resolution mode.

Generator
Function Generator: 0.001 Hz … 50 MHz within +/- 0.5 dB flatness.
Usable to 100 MHz with less flatness.
AM, FM, PM modulation and signals summation. Built-in modulating signal generator: 0.001 Hz … 100 MHz.
Frequency sweep in synch with the oscilloscope sweep.
Pulse generator 5 ns … 5 s, noise generator and arbitrary waveform generator with script language describing waveforms.
Small overshoot/undershoot and high slew rate pulse signals.
Auxiliary multi-functional digital output.

Frequency Meter
The hardware frequency counter can work with any input channel, as well as with the oscilloscope trigger. It has up to 10 digits in the frequency counter mode and a constant relative accuracy over the entire range (reciprocal counting). It can count pulses and measure a period. The adjustable temperature compensated system clock generator (VCTCXO) provides accuracy better than 1 PPM. An external reference signal of 5 or 10 MHz can be applied.

Spectrum Analyzer
Principles of operation – FFT, combined multi-frequency FFT that forms spectrogram up to 1 GHz without aliasing. The spectrum analyzer has adjustable FFT size, 9 window functions, averaging and scaling for different impedances, an advanced algorithm for accurate measurements of the peak level and frequency, pure own spectrum (no internal parasitic spectral components). Subtractive dither technique is used to improve performance.

Frequency & Phase Response Analyzer (s21 measurement)
Principles of operation – frequency sweep and tracking synchronous digital quadrature receiver.
Amplitude and phase characteristics, linear and logarithmic scales, customizable range.
Calibration (amplitude and phase normalization).
Frequency range: 50 Hz … 100 MHz.
Dynamic range: > 100 dB (9 kHz … 100 MHz).

Vector Antenna Analyzer (single port VNA, s11 measurement)
Frequency range: 9 kHz … 100 MHz.
OSL calibration and “mathematical subtraction” of the connecting cable.
Measurement (calculation) VSWR, Return Loss for cables (lines) with user defined  Zo in the range of 10…320 Ohms.
Measurement (calculation) Q, Rs, Xs, | Z |, Phase Z, Rp, Xp.
XTAL measurement.

LC Meter
Measures capacitance, capacitor effective series resistance (ESR) and inductance.
Capacitance range: 1 pF … 30000 uF.
ESR range (C> 0.5 uF): 0.05 Ohm … 1 kOhm.
Inductance range: 50 nH … 3 H.

SDR Transceiver
The device can operate as a DDC / DUC transceiver in conjunction with SDR programs supporting Winrad API. Tested with HDSDR, Zeus Radio ver 2.9.3, SDRuno, SDRSharp ver 1361.

Parameters in receive mode (HF bands)
ADC Sampling: 200 MSPS, 8 bit.
MDS 500 Hz (preamp off): -96 dBm.
MDS 500 Hz (preamp on): -110 dBm.
ADC overflow level (preamp off): +2 dBm.
ADC overflow level (preamp on): -12 dBm.
Input frequency range: 4 Hz … 350 МНz with 3 dB flatness (unfiltered input, anti-alias filters required).
IMD3: 60 dB.
Panadapter maximum span: 65 kHz.

Parameters in transmission mode
DAC Sampling: 400 MSPS, 12 bit (max).
Max output power: +5 dBm.
Output frequency range: DC … 60 MHz with 1 dB flatness.
IMD3 (HF bands): -60 dBc.
AM, FM, LSB, USB, CW modes.
Transmission mode is fully implemented in the module and requires connection of an external microphone amplifier for voice.

The device is powered from a USB port and requires no additional power supply.