Transcript
Kevin Jardine - VK2KVJ
Modular Spectrum Analyser/Vector Network Analyser (MSA/VNA)
MSA/VNA Rear
Scotty Sprowls Original MSA
Scotty's Newer Version
Construction and Integration of the SLIM MSA. MSA with Tracking Generator, and VNA using Standardized Lab Integration Modules (SLIMs) http://www.scottyspectrumanalyzer.com
Software ● ●
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Uses Free Liberty Basic - www.libertybasic.com MSA software provided both in Basic and as tokenized executable Tested using Win ME, Win XP, Win7, Win8, and Win10 https://groups.yahoo.com/neo/groups/spectrum analyzer/info
Basic Spectrum Analyser Specifications – Build Level 1 Dual Conversion Topology 1013.3 MHz first I.F., 10.7 MHz final I.F. Frequency of Operation 10 KHz to 1 GHz, 1-2 GHz (2G Path Option), and 2-3 GHz Frequency Resolution < 3 Hz Sensitivity <-110 dBm, dependent on Resolution BW Dynamic Range greater than 85 dB, dependent on Resolution BW Amplitude Resolution 0.04 dB or better Resolution Bandwidths suggested: 300 Hz, 3 KHz, 30 KHz, 300 KHz Final Filters Noise Figure <23 dB Phase Noise <-91 dBc/Hz, 10 KHz from carrier Image Rejection In-Band Image Rejection better than -100 dBc IM Distortion Two tone, -60 dBc or better Max Input Signal RF = +13 dBm; DC= 20 ma Number of SLIMs 11 modules, plus coaxial cavity filter
Tracking Generator Specifications – Build Level 2 Output Frequency, Level < 1 Hz to 1000 MHz @ -11 dBm, +/- 1 dB (difference) 2000 MHz to 3000 MHz @ -14 dBm, +/- 2 dB (sum) 1000 MHz to 2000 MHz @ -20 dBm, +/- 2 dB (feedthru) 1000 MHz to 2000 MHz @ +9 dBm, +/- 1 dB (bypass option) Number of SLIMs 3 additional to Basic MSA Provides functions: ●
Spectrum analyser with signal generator
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Spectrum analyser with tracking generator operating in normal,
offset or reversed tracking modes. ●
Scalar network analyser
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Crystal analyser
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Additional fixed and variable frequency sources
VNA Extension Specifications – Build Level 3 Frequency of Operation same as SA (0-1 GHz, 1-2 GHz, 2-3 GHz) Instantaneous Dynamic Range greater than 70 dB Phase Resolution 0.1 degrees or better Number of SLIMs 2 additional to MSA/TG Provides functions: ●
VNA Transmission
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VNA Reflection
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Component meter for measuring resistors, capacitors & inductors
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Coax tester as a transmission line analyser
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Antenna analyser
S53MV
Fixtures - Series For component measurements such as Crystals, Resistors, Capacitors & Inductors or RLC combinations where impedances are >500 Ohms.
Fixtures - Shunt For component measurements such as Crystals, Resistors, Capacitors & Inductors or RLC combinations where impedances are <10 Ohms.
Fixtures – Resistive 6dB Splitter
For general testing configurations.
Fixtures - Reflectometer For measurements where the DUT impedance is 40-60 Ohms. When using OSL calibration it can operate between 10kHz and 3.2GHz.
Reference Fixtures
Opens, shorts & loads.
Techniques ●
To bend sheet metal for shielded boxes and cases. How to best shield enclosures.
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To cut sheet metal for shielded boxes and cases.
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To obtain tools and learn techniques to do surface mount.
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To label panels and fixtures.
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To make my own PCBs.
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To develop a truely modular design.
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To do detailed layout planning.
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2 years pre-planning & material sourcing.
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Documentation.
Sheet Metal Bender (built 2012)
Jim Tregellas VK5JST http://www.users.on.net/~endsodds/bender.htm
12" Shear – My best investment ever - $165.00
MSA Shielded Module Enclosures
Coaxial Filter
S53MV
Coaxial Filter
MSA Modules Control Module Top
ADC Module Top
Control Module Bottom
Log Detector Top
Master Oscillator Top
MSA Modules USB Module Top
Phase Detector Module Top
MSA Power Interconnection
Spectrum analyser software graphics
Spectrum analyser software graphics
VNA software graphics
MSA Tutorials
Demonstrations
Still to add more IF filters in the future.
Thankyou Total cost approx. $800
