UTMZONE

Sets UTM parameters

Platform:

OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7, SMART2

This command sets the UTM persistence, zone number or meridian. Refer to https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system.

 

  1. The latitude limits of the UTM System are 80°S to 84°N, so if your position is outside this range, the BESTUTM log outputs a northing, easting and height of 0.0, along with a zone letter of “*” and a zone number of 0, so that it is obvious that the data in the log is dummy data.

  2. If the latitude band is X, then the Zone number should not be set to 32, 34 or 36. These zones were incorporated into other zone numbers and do not exist.

Message ID: 749

Abbreviated ASCII Syntax:

UTMZONE command [parameter]

Factory Default:

UTMZONE auto 0

ASCII Example 1:

UTMZONE SET 10

ASCII Example 2:

UTMZONE CURRENT

The UTM grid system is displayed on all National Topographic Series (NTS) of Canada maps and United States Geological Survey (USGS) maps. On USGS 7.5-minute quadrangle maps (1:24,000 scale), 15-minute quadrangle maps (1:50,000, 1:62,500, and standard-edition 1:63,360 scales) and Canadian 1:50,000 maps the UTM grid lines are drawn at intervals of 1,000 metres and are shown either with blue ticks at the edge of the map or by full blue grid lines. On USGS maps at 1:100,000 and 1:250,000 scale and Canadian 1:250,000 scale maps a full UTM grid is shown at intervals of 10,000 metres.

Field

Field Type

ASCII Value

Binary Value

Description

Format

Binary Bytes

Binary Offset

1

Command header

-

-

UTMZONE header

This field contains the command name for abbreviated ASCII or the message header for ASCII (see page 1) or Binary (see page 1).

-

H

0

2

command

See Table: UTM Zone Commands

Enum

4

H

3

parameter

See Table: UTM Zone Commands

Long

4

H+4
UTM Zone Commands

Binary

ASCII

Description

0

AUTO

UTM zone default that automatically sets the central meridian and does not switch zones until it overlaps by the set persistence. This a spherical approximation to the earth unless you are at the equator (default = 0) (m)

1

CURRENT

Same as UTMZONE AUTO with infinite persistence of the current zone. The parameter field is not used

2

SET

Sets the central meridian based on the specified UTM zone. A zone includes its western boundary, but not its eastern boundary, Meridian. For example, zone 12 includes (108°W, 114°W) where 108° < longitude < 114°

3

MERIDIAN

Sets the central meridian as specified in the parameter field. In the BESTUTM log, the zone number is output as 61 to indicate the manual setting (zones are set by pre-defined central meridians not user-set ones)