Remote shutdown between 1260 Infinity II and 8900 ICP-QQQ not working


We are having some problems with our 1260 Infinity II stack (with a 1290 Pump in use due to analyte background issues), and getting the stack to shutdown when the "plasma off" command is executed on an Agilent 8900 ICP-QQQ. The remote cable is going from the E-REMOTE port on the 1260 multisampler to the remote port on the 8900 ICP-QQQ, and the remote trigger works fine for initiating the ICP-QQQ TRA, but if the ICP-QQQ goes into standby the HPLC stack doesn't go into an error state which risks flooding the spray chamber and torchbox. As a result, the ICP-QQQ has to be left on until the run has finished. Does anyone have any ideas as to how the remote can be configured to shutdown the HPLC stack when the ICP-QQQ switches off? I'm not very well versed in electronics/rewiring!


Elliott Hamilton

Inorganic Geochemistry, British Geological Survey, UK

  • Hi ellha,

    normally this should not be a problem. Are you using a normal RS232 cable or a "twisted 0-modem" one? It should be a normal one.

    Attached is a PDF with the PIN Settings and the description how it works.

    Best Regards


  • Hi Chris,

    Thanks for your reply. We are using an ERI to APG cable, as the remote port on the back of the multisampler is 15-pin; due to the short length of this cable, we are having to daisy chain it with another APG cable to reach the remote on the ICP-QQQ. This setup was working fine until the installation of the 1290 pump; all modules are connected to each other through standard CAN patch cables.

    Something I will try is triggering the remote through the 1290 Pump as opposed to the multisampler, then putting the ICP-QQQ into standby.



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