Navman 11 - Manual (Page 26)

26 MN002000A © 2004 Navman NZ Ltd. All rights reserved. Proprietary information and specifications subject to change without notice.
Message ID: 1117
Rate: Variable
Message Length: 10 words
Word No. Name Type Units Range Resolution
1-4 Message header
5 Header checksum
6-7 Set time (Note 1) UDI 10 ms ticks 0 to 4 294 967 295
8 Sequence number (Note 2) I 0 to 32 767
9 Power management on duty cycle (Note 3) I s
0 = off
1 to 4 = on
10 Data checksum
Note 1: Set time is an internal 10 millisecond (T10) count since power-on initialisation enabled the processor interrupts. It is not used
to derive GPS time, but only serves to provide a sequence of events knowledge. The set time or T10 count references the receiver’s
internal time at which the message was created for output. The T10 range is approximately 71 weeks.
Note 2: 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 output.
Note 3: In power management mode, the RF power may be switched off to reduce power consumption. The digital circuitry may be
gated off and the processor idled when not needed. This field gives the measurement engine permission to turn off the RF for the
minimum off time in seconds.
Table 3-16 Message 1117 (power management duty cycle in use)
3.5.1.12 Message 1117 (power management duty
cycle in use).
This message controls the use of power
management in the receiver. The contents of the
‘power management duty cycle in use’ message
are described in Table 3-16.