Press 7 [MEAS] of the PENTAX and press [ENT]to view the MEASURE METHOD SELECTION screen.
Select 4.IH MEASURE and press [ENT] to view the STATION POINT SETUP screen.
Press [ENT] to open the PN, X, Y, and Z input window and input each.
Then, press [F5] [ACCEPT] to view the KNOWN
POINT COORD. SETUP screen.
After pressing [F1] [MEAS] to make the distance measurement, press [ENT] to display MACHINE IH screen.
The value output on this screen is the current IH
value. It will be saved as the updated IH value by pressing [ENT]