Navman 11 - Manual (Page 43)

43 MN002000A © 2004 Navman NZ Ltd. All rights reserved. Proprietary information and specifications subject to change without notice.
Message ID: 1317
Rate: As required - maximum rate 1 Hz
Message Length: 8 words
Word No. Name Type Units Range
1-4 Message header
5 Header checksum
6 Sequence number (Note 1) I 0 to 32 767
7 Power management on duty cycle (Note 2) I s
0 = off
1 to 4 = on
8 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: 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 3-37 Message 1317 (power management control)
3.5.2.15 Message 1317 (power management
control).
This message controls the use of power
management in the receiver. The contents of
the ‘power management control’ message are
described in Table 3-37.
Note: Message 1317 is primarily used to input key
parameters from GPS systems without non-volatile
storage. This is why the format of output message
1117 is exactly the same. In other words, the output
message is used to capture data while the input
message is used to restore data.