Juniper-systems Allegro DAQ Manual do Utilizador descarregar pdf (Página 18)

18 User’s Guide

Switch # Switch Name Switch

Settings

Result

3 OPA_EN_H OFF Sensor Excitation control is

enabled continuously

4 DIO7_OUT ON

5 SENSOR_EXC OFF Sensor Excitation Output

disabled; Sensor Excitation

Bypass enabled

6 EXC_BYPASS ON

CAUTION: Switch 5 and Switch 6 should NEVER be in the “ON”

position at the same time. This could damage the NI DAQCard.

Enable current limit monitoring

The internal circuitry of the Sensor Excitation Output provides

a Current Limit Flag. The ﬂag lets you determine if the devices

attached to the Sensor Excitation are drawing more current than the

Sensor Excitation is capable of supplying.

You can set the PFI5 Output on the NI DAQCard to monitor the

Current Limit Flag. Note that when the switches are set to do this,

the PFI5 is no longer available through the 50-pin D connector.

Switch # Switch Name Switch

Settings

Result

1 I_FLAG ON

Current Limit Monitor

Enabled; PFI5 Output used

to monitor voltage current

2 PFI5_OUT OFF

Note: For the pod to function correctly, make sure Switch 1 and Switch

2 are never in the “ON” position at the same time.

Disable current limit monitoring and reconnect the PFI5

signal to the 50-pin connector

To make the PFI5 available again through the 50-pin D connector

again, set the switches as shown in the following table.

Switch # Switch Name Switch settings Result

1 I_FLAG OFF Current Limit Flag is

enabled; the Current

Limit Monitor is disabled

2 PFI5_OUT ON



1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 27 28

Sem comentários

Juniper-systems Allegro DAQ Manual do Utilizador Página 18