Measurement-computing CIO-DAS16Jr/16 Instrukcja Użytkownika Pobierz pdf (Strona 12)

The following sections depicts recommended input wiring schemes for each of the seven possible input

configuration/grounding combinations.

NOTE: For simplicity, the input multiplexers are not shown in the following diagrams.

2.3.1

Common Ground / Single-Ended Inputs

Single-ended is the recommended configuration for common ground connections. However, if some of your inputs are

common ground and some are not, we recommend you use the differential mode. There is no performance penalty (other

than loss of channels) for using a differential input to measure a common ground signal source. However the reverse is

not true. Figure 2-5 below shows a basic connection diagram for a common ground / single-ended input system.

Figure 2-5

Common Ground / Single-Ended Input

2.3.2 Common Ground / Differential Inputs

The use of differential inputs to monitor a signal source with a common ground is a acceptable configuration though it

requires more wiring and offers half the channels of a single-ended configuration. Figure 2-6 below shows the basic

connections in this configuration.

Figure 2-6. Common Ground / Differential Inputs

Input

Amp

To A /D

A/D Board

I/O

Connector

LL GND

CH IN

Signal

Source with

Comm on Gnd

Optional wire

since signal source

and A/D board share

common ground

nal source and A/D board

sharin

common

round connected

to sin

le-ended input.

Input

Amp

To A /D

A/D Board

I/O

Connector

LL GND

CH High

CH Low

Signal

Source with

Common Gnd

Optional wire

since signal source

and A/D board share

common ground

Required connection

of LL GND to CH Low

nal source and A/D board

sharin

common

round connected

to differential input.

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