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RebelTechnology / FortRebel

Infrastructure at Rebel HQ
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Build and test BalancedInput/Output Rev01 #29

Closed pingdynasty closed 9 years ago

pingdynasty commented 9 years ago

Eagle files are in RebelTechnology/PowerBoard/schematics/BalancedInputOutput.sch

Build with sockets for chips : THAT1200 and THAT1646. Use 220uF in C6 (or temporarily use 100uF if not available).

Test before populating neutrik sockets.

pingdynasty commented 9 years ago

Populate central 3-pin male header and 16-pin power header (not 2-pins)

pingdynasty commented 9 years ago

Leave out C1, C2, C3, R3. Ceramic film for 100n. C9 and C10 should be wima or similar if we have them in 10uF.

To test, connect an audio frequency signal, 1-10vpp, to the out pin. Check that balanced output is produced at OUT Tip and Ring. Connect OUT Tip and Ring to IN Tip and Ring. Check that the same waveform is produced on the in pin. Record the input and output gain factors and thresholds (max vpp without clipping).

pingdynasty commented 9 years ago

Actually C9 and C10 are supposed to be non-polarized electrolytic, which I don't think we have. Use wire links instead for now.

padski commented 9 years ago

Done, measurements sent to mars