System Overview 3
Keysight 34970A/34972A User’s Guide 81
The floating section contains the main system processor and controls all of the
basic functionality of the instrument. This is where the instrument communicates
with the plug-in modules, scans the keyboard, controls the front-panel display,
and controls the internal DMM. The floating section also performs Mx+B scaling,
monitors alarm conditions, converts transducer measurements to engineering
units, time stamps scanned measurements, and stores data in non-volatile
memory.
Plug-In modules
The 34970A/34972A offers a complete selection of plug-in modules to give you
high-quality measurement, switching, and control capabilities. The plug-in
modules communicate with the floating logic via the internal isolated digital bus.
The multiplexer modules also connect to the internal DMM via the internal analog
bus. Each module has its own microprocessor to offload the mainframe processor
and minimize backplane communications for faster throughput. The table below
shows some common uses for each plug-in module.
For more information on each module, refer to the module sections in chapter 4,
starting on page 209.
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