Difference between revisions of "MiniVNA ICD"
From MyLabWiki
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# Reflection mode – used for measuring various parameters on antennas and cables. | # Reflection mode – used for measuring various parameters on antennas and cables. | ||
# Transmission mode – used for measuring filters attenuators, etc. | # Transmission mode – used for measuring filters attenuators, etc. | ||
| + | |||
| + | == Constants == | ||
| + | |||
| + | ;DDSRATIO = 10737.41824 | ||
| + | :DDS increment for a 1kHz signal. Multiply the desired frequency in kHz with this constant. | ||
[[Category:Instruments]] | [[Category:Instruments]] | ||
Revision as of 21:23, 18 May 2009
The miniVNA is a small and inexpensive antenna analyzer from mini Radio solutions. It connects to a computer via USB and it can measure SWR, RL, Rs, Z +/-jx, Phase, Cable length, R/L/C in the range 0.1Mhz to 180MHz. It comes with a quite all right control software for windows. There is also a Gnome version of the software called gVNA. Unfortunately, it depends on GNOME, it hasn't been updated for three years now and I have never been able to build it.
This document describes the miniVNA USB protocol that has been reverse engineered from user manuals and available software. The purpose is to have a control reference for writing a new control application for the miniVNA.
Connection Details
| Baud rate: | 115200 |
| Data bits: | 8 |
| Parity: | None |
| Stop bits: | 1 |
| HW flow: | None |
Modes
The miniVNA can work in two modes:
- Reflection mode – used for measuring various parameters on antennas and cables.
- Transmission mode – used for measuring filters attenuators, etc.
Constants
- DDSRATIO = 10737.41824
- DDS increment for a 1kHz signal. Multiply the desired frequency in kHz with this constant.
