DG8SAQ Vector Network Analyzer -

A Small, Simple, USB-Powered Vector Network Analyser Covering
1 kHz to 1.3 GHz" was published in QEX January/February 2009 and is available here .thanks to ARRL for their permission.
Many VNWA are now successfully used worldwide.  

The USB-VNWA Application runs on Windows 64 bit and Windows 32 bit Operating systems, like Windows 7, Vista, XP and Windows 98

VNWA Kits are discontinued as from 1st December 2010 as announced in the last buy on the VNWA reflector.  Factory Assembled and tested VNWA 3 will continue to be offered instead of kits.

DG8SAQ USB-Controlled VNWA 2.6 Specification

• USB- Powered and controlled Vector Network Analyser requiring USB port capable of supplying 5V 500mA from a PC with  WINDOWS 64 bit and 32 bits Operating Systems supported.  (Windows 7, Vista, XP, ME, 2000 and Windows 98)

• Coverage from 1 kHz to 500 MHz with dynamic range of up to 90dB – Useful performance up to 1.3 GHz with reduced dynamic range and accuracy.

• S-Parameter  S11, S12, S21 & S22, VSWR

• Component Measurements – Resistance, Admittance Capacitance, Inductance & Quality Factor (Q)

• Time domain & Gating in Time domain - Distance to Fault measurement.

• Logarithmic and Listed sweep: up to 8192 points with sampling time adjustable from 0.2mS to 100mS

• Matching Tool and Complex Calculator, Crystal Parameter tool

• User defined S-parameter calculator

• Basic Spectrum Analyzer useful up to 100 MHz

• Dimensions: Width 10.4 cm, Depth 8.0 cm, Height 4.6 cm,   Weight 0.2 Kg

• Power requirement -  USB 1.1 interface  5V DC max 500mA

• TX-Out max RF Output as signal generator  -12dBm

• Max permissable external RF Input Level  TX-Out and RX-In ports:   0 dBm (0.225V RMS)

• Connectors:  SMA x 2,  USB-B and USB-A
  

• RoHS Compliant

Caution: Please note that operation up to 1.3 GHz requires configuration of the AD9859 DDS clocks to be in excess of the manufacturers specification which may invalidate the warranty of these devices. Although operation up to 1.3 GHz has been successfully done by hundreds of VNWA Users, no responsibility is assumed for component reliability or for reliable operation above the manufacturers specification.

VNWA Operational requirements - Important

• The VNWA is powered and controlled from a standard USB 1.1 or 2.0 Personal Computer port, capable of providing up to 500mA power. The USB-VNWA runs on recent Windows 64 bit and 32 bit Operating Systems like Windows 7, Vista, XP and Windows 98.. Please check out the Documentation section from where the Helpfile in PDF format can be downloaded which provides more information
  
  
• DG8SAQ VWNA User Group  on Yahoo. This is where all VNWA users are encouraged to post and share their experiences and from where current Applications and Drivers are readily available.  Please register to be come a member.
  

Warranty 

A 1 year return to base Warranty from date of Shipment date is applicable to the Fully Assembled VNWA 3 provided the VNWA 3 was not modified or misused and the maximum Voltage ratings  were not exceeded.  Warranty claims should be made by contacting SDR-Kits by email in first instance with a description of the issue. Customer is responsible for return shipping to SDR-Kits.  SDR-Kits is responsible for return of the repaired or equivalent product and for outbound shipping costs. 

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VNWA Documentation Page

VNWA Ordering Page                 

Copyright notice: The project design on this page is Copyright 2008, 2009, 2010  by DG8SAQ and SDR-Kits
Assembled VNWA and VNWA kit  produced by SDR-Kits with permission of DG8SAQ
Website Copyright 2008, 2009, 2010 by SDR-Kits