User's Manual

STRATEGIC Technologies Inc ACU Basics

iTRX Series Users Guide (STI) Feb 6, 2004 7

ACU Indicator Lights and Buttons

The "Power" and "Charge" lights on the front of the ACU (see Figure 2: Front Panel Display) indicate

the presence/absence of AC power, and whether or not the internal battery is being charged. If the AC

Light goes out, this indicates the ACU has been disconnected from AC Power. When the Charge light

goes out, this indicates that the internal battery is fully charged. The “A”, “B” and “*” buttons on the front

panel will not function during normal monitoring operation and the participant is not able to affect the

operation of the unit should the buttons be pushed. These buttons are usable only when the ACU is in

Function Mode. While in Function Mode, the ACU will prompt you to push a button to access a

particular feature (i.e.: If the ACU reads B=Turn ACU off; pushing the “B” button will turn the ACU off).

ACU Operation (Active Mode)

When the ACU is turned on, it first performs a diagnostic check of its internal memory and program.

During these checks the ACU will make one or more beeps. The front panel display will be initialized

and a title screen indicating the current software version (i.e.: v3.1), the ACU serial number (i.e.

A28192), and the iTX serial number (i.e.: T23456) will be displayed, as shown below.

This title screen will be displayed for several seconds, and the display will automatically be cleared. The

day, date and time will then be displayed, as shown below. If this date / time is incorrect it will be

automatically updated when the ACU calls the central computer (CC). When the ACU is operating

correctly, the seconds field on the clock will increment.

When the ACU is connected to a telephone line, the ACU will immediately attempt to place a call to the

central computer and display “Starting Call”. While the ACU is communicating with the CC the display

will read “Phone In Use" and a counter will run in the lower right corner, as shown below. During the

conversation with the CC, a telephone symbol will flash periodically in the lower right corner of the

display.

NOTE: The clock on the display will not change while a call is in progress.

STRATEGIC V3.1

A28192 T23456

WED JAN/05/2003

02:27:45 PM

JAN05/03 02:31PM

Phone In Use