378 Properties of the Modules
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
Only these connectors, in contrast to those previously used, have NO connection from DSUB(1) to
CHASSIS.
If "conventional" connectors are used which have this connection, the module's block-wise isolation
would be cancelled! This would also mean the loss of the measurement inputs' differential properties
and thus of the module's fundamental functionality. Protection mechanisms prevent module damage in
such cases, but instead, apparently "random" measurement errors as well as "mysterious" effects can
result!
SC-modules higher than PD50 (February 2007) support TEDS.
6.18.5.1 SL Variety LEMO
see pin configuration of LEMO terminals .
6.18.6 Sampling rates
The explanations provided in Chapter "Measurement technique", "Sampling rates – Scanner concept "
reveal the following advantages and constraints:
Advantages:
flexible configuration of slow precision measurements and high-speed voltage measurements with
one and the same affordable scanner system
optimal aliasing-free noise suppression of even 50 Hz interference in spite of relatively high
bandwidth of a scanner amplifier
Constraints:
the highest sampling rate (of all those used, even of the channels used to derive virtual channels)
determines the averaging interval and thus the noise suppression properties of all channels
extra signal transit time due to automatic time offset correction is determined by the highest
sampling rate.
Maximum sampling rate, recommended for temperature measurement
(optimum 50 Hz noise suppression):
SCI8: >= 500 ms (2 Hz)
SC16, SCI16: >= 1s (1 Hz)
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