ORACLE SERIES 2E, 2EC, 4E, 4EC, 4H
Operations Manual
Eberle Design Inc.
Page 15
NOTE: You can toggle between each of the three (3) views using the SCROLL (Down)
switch at any time during detector operation.
3.5 LOOP FAULT MONITOR
The ORACLE constantly monitors each channel loop(s) and responds to faults in several
ways to allow the operator to pinpoint loop related problems. Three types of loop related
faults can be detected: Open Circuit Loop or loop inductance above rated range, Short
Circuit Loop or loop inductance below rated range, and 25% change from nominal (tuned)
inductance.
When a fault is detected on either channel the ORACLE responds by outputting a detection
CALL. It flashes both DETECT and FAULT LEDs with a flash sequence denoting the type
of fault and also displays the type of fault on the LCD screen. The LED flash sequence is
common with all EDI Loop Monitor
products. A single flash for open circuit loops, double
flash for short circuit and a triple flash for a 25% change of inductance.
3.6 EVENT LOG
The ORACLE features a fault log which retains the last twenty-five (25) faults that have
occurred on each channel. From the main menu select “EventLog” to view the Event Logs
menu options. Select “View Log” to view and scroll through the last 25 Events. To review
details of an individual Event, select (highlight) an event and press the “MENU (Select)”
switch. Details including the elapsed time since the Event are displayed. Each time a new
fault is logged the previous logs are moved down one. To clear an individual log or all logs,
go to the Event Log menu and select either “Clear Log” or “Clear All” and respond
appropriately to the next screen.
3.7 SYSTEM MENU
Some global settings are applied in the System menu. To access the System menu press
the Channel 1 MENU and SCROLL switches to the Up position (
Back, Up
) simultaneously.
3.7.1 RUN MENU ITEM
Selecting the
Run
item exits the System menu level and returns to the main display.
3.7.2 SYSTEM INFO MENU ITEM
Selecting the
SysInfo
item displays the firmware revision level, HDLC slot address, and
channel configuration.
3.7.3 TEMPERATURE AND VOLTAGE MENU ITEM
Selecting the
Temp,VDC
item displays the current temperature and the voltage applied to
the Detector Unit DC Supply (pin B).
3.7.4 LCD DISPLAY HEATER MENU ITEM
Selecting the
Heater
item displays the state of the front panel LCD display heater. Selecting
Off disables the heater function under all conditions (default). Selecting On will enable the
heater function under the following conditions; the temperature is less than 32 degrees F (0
degrees C), AND any of the front panel switches has been activated. The heater and LCD
backlight will then remain On for 60 minutes following a switch activation.
A “H” character will be displayed next to the DEFLECTOMETER when the LCD heater is
activated.