# 1-Wire analyser doesn't work properly **URL:** \ **Category:** Extensions\ **Created:** [October 25, 2023, 12:42am UTC](https://discuss.saleae.com/t/1-wire-analyser-doesnt-work-properly/2509 "2023-10-25T00:42:52Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![tiputa](https://avatars.discourse-cdn.com/v4/letter/t/ad7895/32.png) [@tiputa](https://discuss.saleae.com/u/tiputa)\ **Post date:** [October 25, 2023, 12:42am UTC](https://discuss.saleae.com/t/1-wire-analyser-doesnt-work-properly/2509/1 "2023-10-25T00:42:52Z")
I am trying [to analyse](https://i.ibb.co/wrFc4Yz/1-Wire-Temperature-Sensor-Dallas-DS18-B20.png) 1-Wire (Dallas) Temperature Sensor DS18B20 but the analyser seems not working properly. When I measure the signal [by the oscilloscope](https://i.ibb.co/y0dnZ05/1-Wire-Reset-and-0x55.png), I get command 55h after the reset. What’s the problem? The sampling frequency is set to 24 Ms/s. ---
**Author:** ![timreyes](https://yyz2.discourse-cdn.com/flex030/user_avatar/discuss.saleae.com/timreyes/32/108_2.png) [@timreyes](https://discuss.saleae.com/u/timreyes)\ **Post date:** [October 26, 2023, 1:22am UTC](https://discuss.saleae.com/t/1-wire-analyser-doesnt-work-properly/2509/2 "2023-10-26T01:22:21Z")
@tiputa It looks like the recorded signal is not being recognized by our 1-wire analyzer. As a debugging exercise, it may help to compare your recorded data to simulation data generated by our 1-wire analyzer. Instructions for this can be found below. > **[Demo Mode](https://support.saleae.com/user-guide/using-logic/demo-mode)** I’ve provided a sample 1-wire demo capture attached here which you can use to compare your capture to. [demo-1-wire.sal](https://discuss.saleae.com/uploads/short-url/vptuvJeRq8X8XrLQleLUCYjBQsP.sal) (13.8 KB) Additonally, can I know which specific Saleae Logic model you own out of the pictured ones below? > **[How to Identify Each Saleae Device](https://support.saleae.com/faq/general-faq/identify-each-saleae-device)**