TSD Rally Split vs Checkpoint Clock Usage & Stats

The TSD Rally Split consists of two clocks with different purposes. Master•Time on the left is the rally time-of-day clock. This clock can be adjusted to synchronize with the Official Rally Time clock. Also, the Master•Time clock can be split/stopped by touching the button on the left side. Retouching the button will cause the split time display to disappear.  Monte•Carlo on the right is a stopwatch with two buttons: one starts and resumes the stopwatch and the other records each lap. When the stopwatch has been stopped, there are three options for resetting it to zero for another start available when you click the Stopwatch Reset Options button below the stopwatch. One option (To Zero Now) is to reset to zero and await pressing the Start button. A second option (Next Minute) is to have the stopwatch reset when the time-of-day clock reaches the next full minute. A third option (Preset Time) allows you to select any time in either minutes:seconds or minutes:cents using the four sets of green or red buttons to increment to the time desired. In order for any of these three options to take affect, you must touch the Apply button on the Stopwatch Reset Options popup. Touching the "Adjust" button opens a popup that allows you to synchronize the Master•Time to the Official Rally Time by making adjustments in increments of +/– 0.1 seconds to account for total errors of as much as + or – 10 seconds. Touch the Lock button to make clock adjustments. Adjust time ahead or behind as needed and, when finished, touch the Unlock button to prevent unintended adjustments. Touch the double Arrows singly or continuously to make adjustments in +/– 0.1 second increments. When unlocked, a chime will sound at 0 seconds and 30 seconds. This audible cue is helpful when synching with an Official Clock. When the Official Rally Clock’s second hand reaches zero, the start of a new minute, estimate the error by which your clock is behind or ahead of the Official time and add or subtract 0.1 second increments. On the clockface displays, time can be measured in either seconds or decimal minutes. Additionally, there are two levels of time precision. One displays two digits for seconds or two digits for hundredths of a minute. For more precision, the other measures and displays seconds as two digits plus tenths of a second or three digits for thousandths of a minute. There are three watch face styles: black, yellow, and white.

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Checkpoint Clock

The Richta Rally Checkpoint Clock is an application designed as a timing device for use at checkpoints during Time-Speed-Distance road rallys. It can also be used as a time reference for Class B or "Seat of the Pants" rally classes. When the "Split" button is pressed the clock records the time of the split in a scrollable log area at the bottom of the display. An associated car number can optionally be recorded as well. Log entries can be reviewed by scrolling the screen and individual log entries may be deleted. The clock can be dynamically changed to record in seconds, tenths of a second, or hundredths of a minute (decimal minutes). A facility is provided to adjust the time of day clock independently of the devices clock so that the app can be synchronized to an external time reference without changing the device's clock. *** Note *** The accuracy of the clock over time, sometimes called drift, depends on the accuracy of the underlying hardware.