The standalone RS232 watchdog box
is your systems and peripheral applications protector! RS232
Watchdog box provides user selectable refresh timer to be used
inside your PC, which prevents the computer to hang by
automatically resetting the system of your computer, it is also
monitoring RS232 control lines and detecting ring indicator signal from
MODEM, which prevents the computer and peripheral to hang by
automatically resetting your computer and peripherals.
The RS232 watchdog box is an
external device that connect between your computer and MODEM,
when the RS232 watchdog box is enable, the system software or
application program must refresh watchdog before selected time slice is
reached, otherwise the computer will be reset, and the power of power
control box that connects to peripheral devices will also be reset. To
refresh watchdog timer, there are three modes can be selected, one is
command check mode which requires application program to use command to
refresh watchdog timer; Second is communication check mode which
refresh watchdog timer automatically while Transmit Data (TxD),
Data Terminal Ready (DTR), and Request To Send (RTS) signals are
activated; Another is ring check mode which reset system automatically
if ring no answer is detected after preset ring count.
In the distribution diskette, we provide software for Windows/95,
Windows/98, Windows/NT4.0 workstation, and Windows/2000 operating
4 The features of the stand
alone RS232 watchdog box are:
Provides user selectable refresh
*Monitoring the RS232 control
lines (TxD, DTR, RTS) activity. The system will be reset if
no RS232 signals activity during preset refresh time.
*Monitoring the Ring Indicator
(RI) signal. The system will be reset if ring no answer is
detected after preset ring count.
*When the application program or
computer system does not generate refresh signal, the
computer will be reset automatically.
*Provides command check mode to
control watchdog from computer side.
*Provides user selectable power on
delay timer to let computer start monitor system until
*The maximum distance of RG59
cable from watchdog box to power control box is up to 500m.
*Available with 110V and 240V
(10A) Plug type UK, Europe, USA and Austria type selectable
for extension power control box.
*Suitable for Windows/95,
Windows/98, Windows/NT, Windows/2000 operating systems.