beautypg.com

Configuring switches, Continuously enable the sensor excitation output, Configuring switches – Juniper Systems Allegro DAQ User Manual

Page 16

background image

16 User’s Guide

The chart below shows the name and default setting of each switch.

Switch #

Switch Name

Default Setting

1

I_FLAG

OFF

2

PFI5_OUT

ON

3

OPA_EN_H

OFF

4

DIO7_OUT

ON

5

SENSOR_EXC

ON

6

EXC_BYPASS

OFF

With the switches in their default positions, the DAQ Expansion Pod

is configured as follows:

The current limit monitoring of the Sensor Excitation Output is

disabled.
PFI 5 is connected directly to the 50-pin D connector.
The Sensor Excitation is enabled continuously.
DIO 7 may be used for standard digital input and output.
The Sensor Excitation is output rather than the Analog Out 0

signal.

Configuring Switches

This section shows you how to reconfigure the switches of the DAQ

Extension Pod. Specifically, it shows you how to:

Continuously enable the Sensor Excitation Output
Use DIO7 to enable/disable the Sensor Excitation Output
Output the Analog Output 0 rather than the Sensor Excitation
Enable current limit monitoring
Disable current limit monitoring

Continuously enable the Sensor Excitation Output

By setting the configuration switches as shown in the following

table, the Sensor Excitation is continuously output at the voltage set

by Analog Out 0. The Sensor Excitation Output uses Pin 16 on the

50-pin connector.

To continuously enable the Sensor Excitation Output, configure the

switches below to the following settings: