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1) Vertical distance CLIMBED (+).
2) Vertical distance DESCENDED (-).
3) The sum of 1) and 2), total vertical distance (no sign).
Some examples of accumulator readings are:
Accumulator
Reading
Meaning
+ 0300 MicroTim XB has CLIMBED 3,000
units since last zeroing.
- 1288
MicroTim XB has DESCENDED
12,880 units since last zeroing.
1588 Total vertical units traveled are 15,880
units (i.e. 3,000 + 12,880 = 15,880).
8.2.1 Zeroing the Accumulator
Pressing the key sets all 3 accumulator quantities to zero.
8.2.2 Accumulator Units
The unit selections available in altimeter mode are also available in accumulator-mode. The default is feet. You
may toggle to metric (meters) by holding the key for 5 seconds then releasing.
8.2.3 Accumulator Deadband
After each reading, MicroTim XB will ignore any changes in altitude of 2 feet or less.
8.2.4 Accumulator Sampling Rate
MicroTim XB accommodates two sampling rates. ‘FAST’ sampling rate (default) and a slower sampling rate for
slower vertical movement ‘SLO’, where the accumulator deadband may be causing slow climbs/descents to be
ignored by MicroTim XB. To toggle between slow/fast sampling rates, hold for 5 seconds and release. ‘FAST’
or ‘SLO’ will display, showing the new rate.
Be aware that in slow mode, brief changes in altitude can be missed. For example a 10 foot vertical dip lasting 10
seconds may not register on MicroTim XB. Fast mode (the default) has a better chance of detecting this 20 feet in
vertical distance traveled.
8.3 Exiting Accumulator Mode
Normal altimeter operation is restored by executing a NORMAL system reset (by initiating a reset and NOT
touching any keys until it is complete). See section 1.3, Restoring Factory Default Settings.
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