Note
Add components from suppliers to BOM
Link to the specific components on de.farnell.com and de.rs-online.com/web in the BOM and recreate CAD files from specification as *.FCStd and *.STEP
Open-source framework for designing and manufacturing measurement equipment devices:
- Digital Oscilloscopes
- Waveform Generators
- Spectrum Analyzers
- RF Generators
- Vector Network Analyzers
- RF Switch Systems
- Digital Multimeters
- DC Electronic Loads
- Power Supplies
Figure 1: Enclosure for the LibreVNA PCB
- 10 inch touchscreen
- 7 inch touchscreen
- 5 inch touchscreen
Figure 2: Different measurement equipment formfactors with screen sizes of 10, 7 and 5 inches
- Screen
- Analog controls
- Connectors
Figure 3: Four Different front panel design types based on the layout of the screen, analog controls and connectors.
- RS Components GmbH: de.rs-online.com/web
- Farnell GmbH: de.farnell.com
Table 1: Bill of materials for a device with a 10 inch touchscreen and type I front panel layout including the price and supplier for the components.
For reference on enclosure design.
- Rigol DHO800: https://www.youtube.com/watch?v=KQF4UzLPpr0
- Rohde & Schwarz HMO1202: https://www.youtube.com/watch?v=q_FBwu2K7j0
- Tektronix 2 Series Oscilloscope: https://www.youtube.com/watch?v=R2fw2g6WFbg
- Rohde & Schwarz MXO4: https://www.youtube.com/watch?v=BTuXbY_nBOM
- Tektronix MDO3000: https://www.youtube.com/watch?v=VFX47ZGOn_o
- Siglent SVA1015X VNA: https://www.youtube.com/watch?v=HxBcQDooAYs
-> A solution for some way to connect all devices to mains needs to be found
-> A patent search for a handle mechanism has to be done or a mechanism from a device, that is at least 20 years old used.
Patent search for handle mechanism on Espacenet (https://worldwide.espacenet.com/), that is over 20 years old.
Table 2: Patent search queries on espacenet.com wit the number of results
| Query | No. of results |
|---|---|
| pd <= "2005-01-01" | 33,676,350 |
| ia = "tektronix" AND pd <= "2005-01-01" | 3,721 |
| ia = "tektronix" AND nftxt = "handle" AND pd <= "2005-01-01" | 251 |
| ia = "tektronix" AND nftxt = "handle" AND nftxt = "mechanism" AND pd <= "2005-01-01" | 78 |
| ia = "tektronix" AND nftxt = "handle" AND nftxt = "mechanism" AND pd <= "2005-01-01" AND cl =/low "G01R1" | 6 |
| (ia = "tektronix" OR ia = "agilent") AND nftxt = "handle" AND nftxt = "mechanism" AND pd <= "2005-01-01" AND (cl =/low "G01R1" OR cl =/low "F16M11/00") | 19 |
| (ia = "tektronix" OR ia = "agilent" OR ia = "teledyne" OR ia = "keysight" OR ia = "sigilent" OR ia = "rigol") AND nftxt = "handle" AND nftxt = "mechanism" AND pd <= "2005-01-01" AND (cl =/low "G01R1" OR cl =/low "F16M11/00") | 21 |
| cl = "H05K5/023/low" AND pd <= "2005-01-01" | 196 |
| cpc = "F16M11/10/low" AND nftxt = "instrument" AND nftxt = "stand" AND pd <= "2005-01-01" | 116 |
Table 3: Relevant patents from patent search
| Preview | Document no. | Title |
|---|---|---|
 |
US6140812A | Electronic instrument with multiple position spring detented handle |
 |
US4089464A | Instrument housing |
 |
US3464586A | BAIL HANDLE PIVOT MOUNT |
 |
US3924775A | POSITIVELY LOCKABLE ANGULARLY ADJUSTABLE HANDLE |
 |
US3124266A | Casing for portable electrical aparatus |
 |
US4196821A | Instrument housing |
 |
US4393540A | Detachable handle having a pivotal part |
Note: cpc=F16M11/10/low
LibreVNA (PCB, GUI) (https://github.com/jankae/LibreVNA)
- Done: Find suppliers for components
- Add links to suppliers components in the BOM
- Get CAD files (*.STEP) for supplied components
- Create assembly in FreeCAD, import all supplier components and arrange them
- Design all remaining components in FreeCAD
- Get supplier parts, manufacture custom parts and assemble device
- Showcase project in nanoPLM (https://github.com/alekssadowski95/nanoPLM)