Difference between revisions of "DATV repeater audio switch"
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===Notes=== | ===Notes=== | ||
| − | There are alternative parts for the pots. They have different rotations. Before submitting the parts list choose the pot and between Molex and screw terminals. | + | * There are alternative parts for the pots. They have different rotations. Before submitting the parts list choose the pot and between Molex and screw terminals. |
| − | CT6ER103-ND is inserted with the wiper in the square pad, the others go 180° opposite | + | * CT6ER103-ND is inserted with the wiper in the square pad, the others go 180° opposite |
| − | This PCB uses tantalum capacitors - the bar on the case indicates +ve and not - ve as it does on some electrolytic capacitors. | + | * This PCB uses tantalum capacitors - the bar on the case indicates +ve and not - ve as it does on some electrolytic capacitors. |
[[File:tant.png|400px]] | [[File:tant.png|400px]] | ||
Revision as of 10:31, 19 February 2022
Back to repeater controller main page
The 8 channel input audio switch was designed to meet the needs of the GB3SQ TV repeater.
It is controlled by i2c and is supported by the BATC repeater controller - i2c commands are listed in the MCP23089datasheet here.
It can be configured as an 8 channel mixer with two outputs or as two 4 channel mixers with one output each. The 8 switch elements are addressed via I2C.
Schematics and BOM
Schematic: media:REPEATER I2C Audio Switch V2022 SCH.pdf
Parts list: File:REPEATER I2C AUDIO SWITCH PARTS V2022.xlsx
Notes
- There are alternative parts for the pots. They have different rotations. Before submitting the parts list choose the pot and between Molex and screw terminals.
- CT6ER103-ND is inserted with the wiper in the square pad, the others go 180° opposite
- This PCB uses tantalum capacitors - the bar on the case indicates +ve and not - ve as it does on some electrolytic capacitors.
