D-Tec Operation; Power Up Sequence - Will Burt D-Tect 5354901 Operator's Manual

3.3 D-TEC Operation

The D-TEC is based on a distributed intelligence control structure. The D-TEC Sensor and
Display each have a circuit board with an embedded micro controller which talk to each other
over a multi-drop RS-485 serial communications link. For pneumatic masts, the D-TEC activates
a relay to complete a circuit between a customer-operated toggle switch and an Air Control
Valve. For Stiletto masts, the D-TEC works with the Stiletto control.
The D-Tec senses two types of voltage:

Electric Field (E-Field), which is a measure of the amount of voltage potential present at
a given point or distance from an electric source

Magnetic Field (H-field), which is the amount of magnetic energy at a given point or
distance from an electric current source
For additional information on the function of the D-TEC, see Section 6.1.

3.3.1 Power Up Sequence

When power is applied to the Display:

A self-test is performed

The audible message "Running Diagnostics" is played through the speaker

The text message "SelfTst" is displayed

All LED lights will be illuminated
During the self-test, the:

Sensor applies a pseudo electric field to ensure the electric field circuitry is functioning
properly

Sensor applies a pseudo magnetic field to ensure the magnetic field circuity is
functioning properly

Sensor checks the Look-Up Light and supply voltage

Display checks to ensure it has valid communication with the Sensor
In the event the D-TEC fails the self-test, the audible message "Sensor Fault" will be played and
the state indications will be displayed to assist with debugging (Section 5.1).
When the self-test has been successfully completed:

The System Ready LED (green) will come on when a switch is pressed

A "Mast ENA" message will be displayed

The audible message "D-TEC Active" will be played
Once this has occurred, the unit is ready for normal operation. Before extending the mast,
ensure the antenna is positioned so that the Sensor is the highest point.
TP-5522901-00
July 2018
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D-TEC O M
PERATOR S ANUAL
3-3