RESULTS
1 REPLAY 3 POINT
2 STATISTICS 4 EXIT
Figure 5: The Results Menu
Results - Replay
If "REPLAY" is selected from the results menu, the display replays the recorded data in
slow-motion (see Figure 6). "AFR_L" is the AFR of the left sensor, "AFR_R" is the AFR of
the right sensor, "L-R" is the left sensor's AFR minus the right sensor's AFR, and "A" is the
average AFR of both sensors. The display is updated with the measured parameters' values
at each sample time. "DEV" is not shown during replay.
@T= 1.40 SEC
AFR_L: 17.84
AFR_R: 17.59
L-R: 0.25 A: 17.72
Figure 6: AFRecorder Display During Replay
The replay can be halted by pressing "+", or "-". After halting the replay, pressing "+" will
update the display with the data from the next sample time. Pressing "-" will update the
display with the data from the previous sample time. Pressing "ENT" will continue the
replay. At the end of the replay, the AFRecorder returns to the results menu. Pressing
"SYS" will abort the replay and the AFRecorder will present the main menu.
Results - Statistics
If "STATISTICS" is selected, the statistics menu will appear (see Figure 7).
STATISTICS
1 AFR_L 4 AVG
2 AFR_R 5 EXIT
3 L-R
Figure 7: The Statistics Menu
Selection of "AFR_L", "AFR_R", "L-R", or "AVG" will begin the display (see the two
screens in Figure 8) of the statistics of that parameter during the recorded session. The first
screen contains the average, standard deviation (Sd), and the number of samples. The
standard deviation of AFR is calculated as:
Stand-Alone Operation 15
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