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digital attenuator


kevin gilmore

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I used the IRC thin film with .1% tolerance.

Here's the actual values and part numbers.

RP7 15 PFC-W1206R-03-15R0-B

RP6 619 PFC-W1206LF-03-6190-B

RP5 4530 PFC-W1206LF-03-4531-B

RP4 15800 PFC-W1206LF-03-1582-B

RP3 41200 PFC-W1206LF-03-4222-B

RP2 93100 PFC-W1206LF-03-9312-B

RP1 196000 PFC-W1206LF-03-2003-B

RP0 402000 PFC-W1206LF-03-4023-B

RS0 1330 PFC-W1206LF-03-1331-B

RS1 2610 PFC-W1206LF-03-2611-B

RS2 4910 PFC-W1206LF-03-4991-B

RS3 8870 PFC-W1206LF-03-8661-B

RS4 14300 PFC-W1206LF-03-1372-B

RS5 20000 PFC-W1206LF-03-2002-B

RS6 23200 PFC-W1206LF-03-2322-B

RS7 23700 PFC-W1206LF-03-2372-B

RT 24300 PFC-W1206LF-03-2432-B

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I can do the extra boards. I could also do extra assemblies, but I don't have extra relays only.

Ok, I'll take 2 extra boards only then. These will go to storage in case I have some use in the future. Please let me know how much for the extra 2 boards. Is the shipping cost of the 2 assembled boards enough to include these?

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Great news...

I've completed testing on the board. I checked both relay by relay switching and did a listening test using a rotary encoder. Everything was just fine :prettyprincess:

The rest of the boards were put in for manufacturing and once they are back, we can start the assembly process as well.

I'll keep everyone posted as we go.

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I'm using an Arduino Uno board. I'm taking the 5V power straight off of the USB port. The board has an on board 3.3V regulator as well as a 3.3V output.

I supplied the 12V directly to the board making sure that I tied the digital grounds together (not the analog ground).

Here's a quick picture of my down and dirty setup.

dattensetup003.jpg

Edited by Kerry
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  • 4 weeks later...

Wow... That's a lot of boards :D

misc020.jpg

misc017.jpg

Initial visual inspection looks pretty good.

I'm going to say a prayer that they all work. I've got some extra parts if not.

I'll have a chance to test some later this evening. I'll post some results as well.

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