PXM 4000 / 6000 / 8000 Series

What communication protocols are supported by the PXM 468K Series?

How do I tell if my Power Xpert Meter 4000 / 6000 / 8000 is a first generation model or a second generation model?

How does the Power Xpert 468K Series differ from the IQ Analyzer?

Does the Power Xpert 468K Meter capture current waveforms?

How do I download stored waveform captures from a PXM 468K to a PC? What hardware and software do I need?