Measurement-computing Personal Daq rev.6.0 Manuel d'utilisateur télécharger pdf (Page 33)

Personal Daq User’s Manual

878595 General Information & Specifications 2-13

Channel Connection Layouts

The following indicate channel connection layouts for Personal Daq/54, /55, and /56. Connection layouts

for expansion modules (PDQ1 and PDQ2) follow shortly. Personal Daq/54 provides no functionality

for expansion modules.

Analog In Single-ended inputs are used with analog signals that share the same common low, such as

multiple batteries which have their negative sides connected in common. Differential inputs are required

when signals do not share the same common low, such as in the typical use of thermocouples. Note that

the analog low common references are -10 to +20 Volts. Analog low commons (COM) are located on the

same terminal blocks as are the analog channel connections, and should not be confused with the frequency

lows (Lo) discussed later.

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Measurement-computing Personal Daq rev.6.0 Manuel d'utilisateur Page 33