Measurement-computing SWITCH Uživatelský manuál stáhnout pdf (Strana 21)

Switch & Sense 8 User's Guide Template Functional Details

External power LED

The LED labeled EXTERNAL POWER lights up when the Switch & Sense 8 is connected to an external power

source. It uses up to 5 mA of current and cannot be disabled.

Status LED

The LED labeled STATUS indicates the communication status of the Switch & Sense 8. It uses up to 5 mA of

current and cannot be disabled. The table below explains the function of the Switch & Sense 8 status LED.

Status LED illumination

LED Illumination

Indication

Steady green

The Switch & Sense 8 is connected to a computer or external USB hub.

Blinks continuously

Data is being transferred.

Blinks three times

Initial communication is established between the Switch & Sense 8 and the computer.

USB connector

The USB connector is on the back of the Switch & Sense 8 housing. This connector provides +5 V power and

communication.

Internal components

Screw terminals and relays

The Switch & Sense 8 has four rows of screw terminals—two outer rows containing 12 terminals each, and two

inner rows containing eight terminals.

The outer rows of terminals connect to the eight relays available from the Switch & Sense 8.

The inner rows connect to the differential isolated digital inputs. No additional modules are required to

terminate any of the input or output signals.

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Measurement-computing SWITCH Uživatelský manuál Strana 21