Globalstar SmartOne - Manual (Page 61)

SmartOne Manual Rev 1.4 DOC# 9100-0268-01 p.61
Type 3 Message Class
The SMARTONE will use the Type 3 message class for the following message
types:
Diagnostic Message – Subtype 21.
Replace Battery Message – Subtype 22.
Contact Service Provider Message – Subtype 23.
• Accumulate / Count Message – Subtype 24. Subtypes 0 – 3 are used by
earlier tracker products.
Diagnostic Message
The Diagnostic Message includes battery status, GPS average acquisition time,
GPS fails and number of transmissions since the last Diagnostic Message.
The format and fields of the SMARTONE Diagnostic Message is shown in
table 8 below.
Byte Number Variable Description
0
Type Field 2
Bit (1:0) = 3 Non Standard
message type:
0
Subtype 6
Bit (7:2) = 21 for Diagnostic
Message
1
Number of
transmissions
per burst.
4
Bits(3:0) = Number of
Transmissions (1 to 15
Transmissions)
1 Battery
Condition
1
Bit 4: 0 = Good battery. 1 =
Replace Battery
1 GPS Subsystem
Fault
1
Bit 5: 0 = GPS system OK. 1 =
Fault
1 Transmitter
Subsystem Fault
1
Bit 6: 0 = Transmitter OK. 1 =
Fault.
1 Scheduler
Subsystem Fault
1 Bit 7: 0 = OK. 1 = Fault
2
Min Interval 8
Minimum Interval between
transmission attempts ( 5
second resolution) Default is
300 seconds
3
Max Interval 8
Maximum Interval between
transmission attempts. Default
is 600 seconds
4
GPS Mean Search
Time
8
Unsigned binary count in
seconds for mean GPS search to
acquire
5,6
# GPS Fails 16
Unsigned binary count of failed
GPS attempts since last
Diagnostic Message
7,8
# Transmissions 16
# of transmissions since last
Diagnostic message
Table 8 - Diagnostic Message