Horizon Fitness HTS-580 Series Operation Manual page 219

Setting is as follows：
Operation procedure
Press F3 key from MEAS.
PARA. menu to get to the GRID
FACTOR screen.
Press the F1 (ON) key to turn
on the GRID FACTOR.
Press the F4 (MODY) key to
modify.
Press F4 (YES) key to set the
elevation (ELEV) and SCALE.
After modifying press the ENT
key and the calculated grid
factor is shown.
Operation
F3
F1
F4
F4
ENT
Display
219