Guralp Systems CD1.1 - Manual (Page 20)

CD1.1 Tools for Platinum
This diagram depicts the use of two gdi2cd11 converter
modules to handle subframes with different frame lengths.
The multiplexor combines them into a single CD1.1
transmission. Although all the data passes through the gdi-
base module, input filtering in the gdi2cd11 instances
separates them again so that each can be framed
appropriately.
3.4 Different frame lengths from one CMG-DM24
The diagram above shows another way to handle different
frame lengths. In this scenario, two sensors of different types
are connected to the same CMG-DM24 digitiser and their
outputs travel together as far as the gdi-base module. Two
separate gdi2cd11 modules are then used to implement the
different subframe durations, according to the sensor type.
The outputs from the converters are then recombined by the
multiplexer module and passed to a common sender.
20 Issue C