Navman 11 User Manual

37

MN002000A © 2004 Navman NZ Ltd. All rights reserved. Proprietary information and specifications subject to change without notice.

The receiver will always output the best position 

solution it can attain, depending on the number 

and quality of available measurements. The 

Solution Validity Input Message allows the user to 

define the criteria for setting the position validity 

Message ID: 1217
Rate: as required (maximum rate is 1 Hz)
Message length: 13 words

1-4

Message header

5

Header checksum

6

Sequence number (Note 1)

I

0 to 32 767

7.0

Altitude not used

Bit

1 = required

7.1

Differential GPS

Bit

1 = required

7.2

DR measurements required (Note 2)

Bit

1 = required

7.3

Concurrent GPS calibration of DR required 

(Note 3)

Bit

1 = required

7.4

GPS only solution required (Note 4)

Bit

1 = required

7.5-7.15

Reserved

8

Minimum number of satellites used

UI

0 to 12

9-10

Maximum expected horizontal position error

UDI

m

0 to 1000

10

-2

11-12

Maximum expected vertical position error

UDI

m

0 to 1000

10

-2

13

Data checksum

Note 1: The sequence number is a count that indicates whether the data in a particular binary message has been updated or 

changed since the last message input.

Note 2: Must operate with DR. stand-alone GPS not acceptable.

Note 3: DR must be calibrated by concurrent GPS. Stored calibration from past sessions not acceptable.

Note 4: DR must NOT be used, even if available.

status specified in the position output messages. 

The status will be set to ‘invalid’ if any of the 

specified requirements are not met. Storage of this 

message’s parameters requires EEPROM. The 

contents of the ‘solution validity input’ message are 

described in Table 3-30.