HTCCID error | Chromperfect – Chromatography Software

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HP 6890 gas chromatograph connected to a PC displaying an “Unexpected Reply / Error 104” message in Chromperfect, with serial cables shown unplugged to illustrate communication troubleshooting.

Troubleshooting “Unexpected Reply” / Error 104 on HP 6890 GC with Chromperfect

Close-up of an HP 6890 gas chromatograph connected to a PC displaying an “Unexpected Reply / Error 104” communication message in chromatography software, with disconnected serial cables shown to illustrate troubleshooting a digital connection issue.

Chromperfect

Feb 182 min read

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