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STRATEGIC Technologies Inc.
Ref. Doc. No. R.D.5.3.1I Rev 0.1 Jan 18/1999
PRU Basics
Page 10
PRU+ Indicator Lights and Buttons
The "Power" and "Charge" lights on the front of the PRU+ (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 PRU+ has been disconnected from AC Power. When the Charge light
goes out, this indicates that the internal battery is fully charged. The “A” and “B” buttons on the front
panel will not function during normal monitoring operation and therefore the participant is not able to
affect the operation of the unit should the buttons be pushed. These buttons are only usable when the
PRU+ is in Special Function Mode. While in Special Function Mode the PRU+ will prompt you to push
a button to access a particular feature (ie: If the PRU+ reads A=Turn RU off; pushing the button
labelled A will turn the PRU off).
PRU+ Operation (Run Mode)
When the PRU+ is turned on, it first performs a diagnostic check of its internal memory and program.
During these checks the PRU+ will make one or more beeps. The front panel display will be initialized
and a title screen indicating the current software version (ie: 2.1), the PRU+ serial number (ie P28192),
and the PID serial number (ie: T23456) will be displayed, as shown below.
This title screen will be displayed for several seconds, and the display will automatically be cleared. The
date and time will then be displayed, as shown below. If this date / time is incorrect it will be
automatically updated when the PRU+ calls the central computer (CC). When the PRU+ is operating
correctly, the colon
(" : ")
between the hours and the minutes of the clock display will blink
approximately every 1.5 seconds.
When the PRU+ is connected to a telephone line, the PRU+ will immediately attempt to place a call to
the central computer. While the telephone line is in use, the PRU+ will display the message "Telephone
In Use", as shown.
NOTE: The clock on the display will not change while a call is in progress.
STRATEGIC V2.1
P28192
T23456
01/05/1998
02:27PM
01/05/98 02:31PMTelephone In Use