Topcon GTS-823A - Manual (Page 54)

4-12
4 STANDARD MEASUREMENT MODE
4.3.2 Setting of the Instrument Height / Prism Height
The instrument height and prism height are used to compute the ground elevation of the unknown
point. If the option to store NEZ is (on), the instrument and prism heights will be stored in memory when
power is turned off.
Confirm the angle measurement mode.
Operating procedure Operation Display
1 Press [F3](NEZ) key.
2 Press [F6]( ↓ ) key from the coordinate
measurement mode to get the function as in
page 2.
[F3]
[F6]
3 Press [F2](HT) key to type in the instrument
and prism height.
Previous data will be shown.
[F2]
4 Input instrument height, and press [ENT]
key.*1)
Inst. HT
[ENT]
5 Input prism height, and press [ENT] key.
The display returns to coordinate measuring
mode.
Prism HT
[ENT]
*1)To cancel the setting, press [F1](EXIT) key.
V : 90
°10'20"
HR: 120
°30'40"
SD HD NEZ 0SET HOLD P1 ↓
N :
E : PSM 0.0
Z : PPM 0.0
(m) *F.R
MEAS MODE VH SD HD P1 ↓
TURN HT MEAN m/ft SET P2 ↓
Inst. Ht : 1.230 m
R. Ht : 1.340 m
EXIT BS
N :
E : PSM 0.0
Z : PPM 0.0
(m) *F.R
TURN HT MEAN m/ft SET P2 ↓