Combining Instruments - TiePie Handyscope HS6 DIFF Series User Manual

Combining instruments

When more channels are required than one instrument can offer, multiple instru-
ments can be combined into a larger combined instrument. To combine two or
more instruments, the instruments need to be connected to each other using
special cables.
The CMI (Combine Multiple Instruments) interface that is available by default on
the Handyscope HS6 DIFF provides an easy way to couple multiple oscilloscopes
to one combined oscilloscope.
The CMI interface supports automatic recognition of the instrument. The high
speed trigger bus is automatically terminated with the correct impedance and
the high speed sampling bus is automatically configured and terminated at the
beginning and end of the bus. The high speed sampling bus takes care that each
Handyscope is fully synchronized to ensure that even at the highest sampling rate
the instruments operate at the same sample clock (0 ppm clock error!). The con-
nection order when combining multiple instruments is not important. The CMI in-
terface has built-in intelligence to detect the connections and terminate all buses
properly at both ends of the bus. So instruments can be connected to each other
in random order. Placing terminators and determining the proper connection or-
der is not required!
Advantages of the CMI (Combine Multiple Instruments) interface are:
•
automatic instrument recognition,
•
automatic creation and termination of the high speed trigger bus,
•
automatic creation and termination of the high speed sampling bus,
•
automatic master/slave setting of the sampling clock bus.
Figure 6.1: CMI diagram
Combining instruments
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