Testboard_kit矢量网络分析仪资料.pdf

VNWA Testboard kit for Ham Radio Workshop This testboard kit was designed for the VNWA Workshop “Practical Use of Vector Network Analyzer” by Prof . th th Dr. Thomas Baier, DG8SAQ at Ham Radio Friedrichshafen on 29 and 30 June 2013. Toms full presentation is available HERE : There is a separate Workshop Presentation showing only Workshop Experiments slides: /DG8SAQ/VNWA/VNWA_Experiments.pdf Basic Testboard Kit Contents: Contents of VNWA Basic Testboard kit for Ham Radio VNWA Workshop QT Description 1 Testboard Printed Circuit Board 2 SMA End Connectors (same type as in VNWA) 4 Plastic 8mm spacers 4 M3 6mm screws 1 32 pin female SIL Socket 1 20 pin female SIL connector 1 20 pin male SIL Header 5 Resistor SMD 100R 0.1% 0603 or 0805 Contents of kit with connectors cut to size Recommended PCB Assembly Procedure 1. Apply a little Solder flux (if available) to the bottom of the PCB. This will make soldering a little easier. Do NOT use acid based flux! 2. Cut the Female 32 pin SIL socket in 4 strips of 7 contacts. You will be left with a 1 strip of 4 3. Cut the Female 20 pin SIL socket in 2 strip of 7 contacts. You will be left with 1 strip of 6 contacts 4. Cut the remaining strip of 6 Female SIL socket in 2 strips of 3. The strip of 4 and one strip of 3 make up the final strip of 7 contacts. (the picture above shows the SIL strips after cutting to size) 5. Fit the 6 Female SIL co ectors with 7 contacts on PCB and solder ONLY 1 Centre co ector 6. Fit the 7th row - made