Sunroad FR900 - Total Altitude Gain and Loss

C
Total altitude gain and total altitude loss
Under altimeter mode, press [B] to switch to climbing time
Press [A] to start climbing time record, unit will count altitude gain
and altitude loss automatically.
Press [A] to stop climbing time record. Unit will count total altitude
gain and loss automatically.
Long press [C] to clear zero of total altitude gain and loss.
Under altimeter mode, press [C] two times to check total altitude
gain and loss.
Calculation of total altitude gain and loss,
From A to B, propradation,
The total height gain=d1+d2+d3;
From B to C retrogradation,
The total height loss=d4+d5+d6
C
Altitude record Total altitude gain and loss
Altitude
Time
d1
d2
d3
d4
d5
d6
A
B
C
13