Old instruments using sequencer version 2 and 3 are not compatible with modern versions of Windows.
A change in the way Windows uses its serial ports, which was implemented after Windows ME, will cause our version 2 and 3 sequencer software to record errors in the data and usually the instrument will hang.
Version 2 and 3 Sequencer software is only compatible with Windows '95, '98 and ME. We recommend Windows '98 SE (second edition) for stability.
If a computer compatible with Windows '95, '98 or ME is not available, then a virtual PC can be used, such as Windows Virtual PC or VirtualBox.
Instruments using version 4 Sequencer software can be updated free of charge to version 5. Just contact ACM Instruments with your serial number.