Idiomas disponibles
Idiomas disponibles
Capacitive noise coupling is a function of area and proximity. A simple method to reduce the noise coupling is to
physically separate the switches and cables from each other. However, this may not be practical for all applications.
Another solution is to keep large amplitude signals and small amplitude signals away from each other. Group similar
signals together (high voltages, low voltages, analog, and digital). If possible, use two separate switch modules; one
for high-level signals and one for low-level signals. If you are using a single module for mixed-signal switching, leave
one unused, grounded channel between the groups. Also, ground any unused channels on the module.
The DAQM901A and DAQM902A multiplexers have an additional relay, called a bank switch or tree switch, which
helps reduce channel-to- channel noise (Cadj). The multiplexer channels are divided into two banks. The bank
switch isolates one bank of channels from the other, effectively removing any parallel adjacent capacitance from the
isolated bank. During a scan, the instrument automatically controls the bank switches.
Module
DAQM900A
DAQM901A
DAQM902A
DAQM908A
Keysight DAQ970A/DAQ973A User's Guide
Bank 1
Channels 1 through 10
Channels 1 through 10
Channels 1 through 8
Channels 1 through 20
Banks 2
Channels 11 through 20
Channels 11 through 20
Channels 9 through 16
Channels 21 through 40
4 Measurement Tutorials
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