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About the Sokkia GPxX Gyro Station

Determine Azimuth Anywhere, Anytime

Sokkia Corporation introduces its latest series of Gyro Stations, the GPxX series. The GPxX Gyro Station uses SET X series and has wider range of angle accuracy than the previous model; “GPx130R3 series”.

The GPxX locates true north with two modes, follow-up measurement and time measurement, and determines 20” azimuth precision without any other aid. This gyro station is designed for roads, railroads, power lines, pipelines, underground construction and other similar long and narrow projects. There are no restrictions by location, weather or time like other surveying solutions.

The GPxX is available in a 1”, 2”, 3” and 5” model. The standard items included in the GPxX Standard Set Configurations:
 • GPxX Gyro Unit
 • SETxX SET X Total Station Unit - including standard accessories
 • BDC7 External Battery
 • CDC75 Charger and cable for BDC7
 • SE32 Carrying Case for Gyro Unit
 • DLC1 Remote Trigger
 • SC234 Carrying Case for SET X Unit and operator’s manual.  

Set The Azimuth And Start Surveying

 •  20" Azimuth Accuracy - The GYRO STATION incorporates the GP1 manual/gyroscope mounted on the SET X total station. It can locate true
    north and determine the azimuth with 20" (6 mgon / 0.1 mil) precision within 20 minutes.

•  Two Modes For Seeking True North - Observe the precision of the "floating index" through the GP1's eyepiece. The following two
    measurement modes are available:

            - Follow-Up Measurement - Rotate the SET X horizontally to keep the floating index at the zero (0) graduation. At the turning point of
              precession, just press a key on the SET X or the DLC1 remote trigger. With two or more turning points, the azimuth is
              automatically calculated.

              - Time Measurement - Make a provisional determination of true north within a precision of ± 20' (.37gon, 6mil) using Follow-up Measurement
              or a magnetic compass. Press a key each time the floating index crosses the zero graduation.

•  DLC1 Remote Trigger - Simple 3-key remote trigger facilitates Enter key operation during gyro measurement procedures. It also allows
   distance measurement to be triggered wirelessly.

•  SET X Total Stations - These total stations implement the gyro calculation program. The red laser beam of its reflectorless EDM can be utilized
   as a directional reference for tunnel excavation, a pointer for setting out, etc. Four model of differing angle accuracy levels are available.

GP1 Gyroscope
Accuracy of azimuth determination: 20"/6mgon/.01mil (standard deviation)
Running up time: Approx. 60 seconds
Half period (at middle latitudes): Approx. 3 minutes
Minimum Interval between main divisions: Approx. 10' (.0185gon, 3mil)/div
Operating Temperature: -20 to + 50°C (-4 to + 122°F)
Operating Area: Up to 75° Latitude
Size: W145 x D186 x H416mm (W5.7 x D7.3 x H16.4in.)
Weight: Approx. 3.5kg (8.4lb.)

Power Supplies for GP1
Inverter (plugs into GP1)      Input - 12V DC
                                            Output - 115V AC, 400Hz/12V DC
                                            Size - W130 x D55 x H240mm (W5.1 x D2.2 x H9.4 in. )
                                            Weight - Approx. 1.7kg (3.8 lb.)

BDC7 Battery                       Type - Ni-Cd external rechargeable battery
                                            Output - 12V DC
                                            Operating Time - Approx. 3 hours at 25°C (77°F)
                                            Size - W140 x D50 x H250mm (W5.5 x D2.0 x H9.8 in. )
                                            Weight - Approx. 2.0kg (4.4 lb.)