Operator’s Manual Page 74 of 89
OXY-2-USM-1, REV K
C. Device Failure and Recovery
The device incorporates a watchdog timer that restarts the operating system and device application in the event of a device failure.
Each time a device failure occurs the device will reboot, sound a continuous audible alarm (a continuously repeating sequence of 3
beeps, 1.5-second delay, 3 beeps…), and display a message screen (Figure 35) notifying the user of the failure and requiring user action
to continue.
The previous state device parameter settings are retained in the event of a device failure and reboot. Following a device failure and
reboot, when the user selects the “Okay” button on the message screen (Figure 35) the device will attempt to restore the state the
instrument was in before the failure occurred. The following device parameters/settings are stored and retained:
Channel 1 “Sampling” or “Paused”
Channel 2 “Sampling” or “Paused”
Recording Mode “On” or “Off”
If the device was sampling and recording when the failure occurred, the screen shown in Figure 36 will be displayed after the
Okay
button (shown in Figure 35) is tapped. The screen shown in Figure 36 will give the user the following options for dealing with the
sensor data that was collected prior to the failure:
Continue logging sensor data, after the saved settings and the state of the device are restored
Discard the current channel sensor data located in the temporary files
Save the current channel sensor data from the temporary files into user-specified files
Once one of these buttons is chosen, the instrument restores its saved parameter settings and attempts to restore its pre-failure state.
Summary of Contents for T.Ox OXY-2-USM-1
Page 32: ...Operator s Manual Page 32 of 89 OXY 2 USM 1 REV K Figure 7 Low Signal Quality Alarm ...
Page 37: ...Operator s Manual Page 37 of 89 OXY 2 USM 1 REV K Figure 11 Review StO2 Screen ...
Page 46: ...Operator s Manual Page 46 of 89 OXY 2 USM 1 REV K Figure 15 View Numerics Screen Single Mode ...
Page 72: ...Operator s Manual Page 72 of 89 OXY 2 USM 1 REV K Figure 33 Discard Confirmation Screen ...
Page 75: ...Operator s Manual Page 75 of 89 OXY 2 USM 1 REV K Figure 35 Reboot Recovery Screen ...
Page 76: ...Operator s Manual Page 76 of 89 OXY 2 USM 1 REV K Figure 36 Sensor Data Disposal ...
Page 84: ...Operator s Manual Page 84 of 89 OXY 2 USM 1 REV K ...
