GSI

On the Survey tab, in the Import group: Click GSI to import data from a Leica Total Station GSI (Geo Serial Interface) file. GSI file data is stored as ASCII text, with one line per measurement. On each line there can be several blocks of data, with a blank space as the separator between them.

Input

GSI file

Navigate to the location of the .GSI file you want to import. From version 2.20 onwards there are two variants of file format (GSI-8 and GSI-16) with word lengths of 8 and 16 characters respectively. When 16 characters are supported:

A measurement block is tagged with an * at the first position.
A data word includes the data at position 7 to 23 instead of at 7 to 15.

Output

File

Select a (DAT, SVY, or STR) output file type and then enter (or navigate to) the name of the file. If the file does not exist it will be created. If the file exists, but one or more nominated fields do not exist, they will also be created.

Point field

Each measurement block in the file contains a point number and measurement information, which will vary depending on the format which is set on the survey instrument.

Specify the field to which the point numbers will be written.

Ignore points that are not numbers

Pickup point numbers can contain non-numeric characters which are typically station identifiers. It may be necessary to select this option to ignore such records.

Word Index	Description
11	Point number (includes block number)
21	Horizontal circle (Hz)
22	Vertical angle (V)
31	Slope distance

Coding

Choose which coding information to write to the output file. Code blocks primarily record identification and data processing information, but can also be used to store measurement information such as instruments, target heights and tie distances.

Code word

(Optional) A code block can be between 1 and 8 words. The first word of a Code block is a Code word index (block ID). To only write coding information for code blocks with a particular Code word index, enter the Code word value.

For example, only extract coding information where the Code word index is "41”:

Word Index	Description
41	Code number (includes block number)
42 - 49	Information 1-8

Code index

If the Code word input is left blank, the process will write the chosen Code index value to the file irrespective of the Code word that precedes it.

Code field

Specify the field to which the chosen coding information will be written.

Import as strings

Select this option to import the point numbers in the file as strings. You will need to choose how to increment the Join values as the input file is processed:

Point number jumps

Select this option to increment the Join value wherever the point number value jumps (forwards or backwards) by more than 1.

Point number is reset to 1

In some cases the point numbers are reset back to 1 to indicate the start of a new pick-up type. Select this option to only increment the Join value where the point value is equal to 1.

Since a reset is also a jump in point number, this option is disabled when the Point number jumps option is selected (see above).

Record number jumps

Select this option to increment the Join value wherever the Record number jumps by more than an increment of 1.

Observations

Select this option to map the observed HORIZONTAL ANGLE, VERTICAL ANGLE and SLOPE DISTANCE values to fields in the output file.

Word Index	Description
21	Horizontal circle (Hz)
22	Vertical angle (V)
31	Slope distance

Coordinates

Select this option to map EAST, NORTH and HEIGHT coordinate values to fields in the output file. Records with EAST, NORTH and HEIGHT coordinates that are all zero are ignored.

Word Index	Description
81	Easting (target)
82	Northing (target)
83	Elevation (target)

Auto load

If coordinates are written to the file, select this option to load the points and strings you have imported into Vizex.