Date: Mon, 11 Sep 2023 07:40:55 -0600 Subject: Re: [sloan-25mlog 6810] 2.5m obslog 20230910 (SJD 60198) From: "Daniel Oravetz" Hi Kaike, > R1 heater voltage is at -0.6 V, It normal value is at ~ -6.5 V. Given that R1 has warmed up to -55C, the heater isn't needed to maintain the temperature from getting lower than the set point, so I think the expectation would be to see the heater voltage go to ~0V and be remain off. Dan