Re: lock-in amplifiers

Posted by Ilia Geifman on 2/20/2004, 10:30 am, in reply to "lock-in amplifiers"
209.242.61.194

To Boston Electronic Corporation, 91 Boylston St., Brookline MA 02445 We bought Lock-in Amplifier (model 430). We give: 1. Signal 70 kHz. 2. Reference 70 kHz. But, no voltage on X Output. We can not adjust with VR2 – no voltage even if we try to adjust with VR6. On the both contacts of VR2 the same negative voltage – 15 V. Can you help us? Ilia

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Message Thread: lock-in amplifiers - Orvin E. Wagner PhD 4/12/2001, 1:47 pm Re: lock-in amplifiers - Ilia Geifman 2/20/2004, 10:30 am 4 - 4 February 3, 2007, 19:06:49 Re: lock-in amplifiers - Fred Perry 4/12/2001, 5:57 pm Re: lock-in amplifiers - A.D.KAUL 3/23/2004, 5:46 am Re: lock-in amplifiers - Fred Perry 3/23/2004, 12:24 pm Re: lock-in amplifiers - ranganathababu.j 3/15/2004, 3:10 am Re: lock-in amplifiers - Fred Perry 3/23/2004, 12:31 pm « Back to thread

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