It appeared to work when he used a separate piece of ground wire.
He also measured the DDS3s relay contact to ground, only a few ohms, I think a few ohms is good enough for most low current signals, anyway, we shall see the new junction box with a new relay.
Most micro input is about 2.5v (5v supply), even with TTL at 0.8V, a few ohms is still considered to be a good ground. Anyway - he will receive the box soon.
It is the most simplest of things that causes the most problem. How far are you away from him (distance wise)?
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Richard L
aquamist technical support
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