CLOCKMODEL

Current clock model status

Platform:

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

The CLOCKMODEL log contains a filtered representation of the receiver's clock bias relative to GPS system time.

Message ID: 16

Log Type: Synch

Recommended Input:

log clockmodela ontime 1

ASCII Example:

#CLOCKMODELA,USB1,0,65.0,FINESTEERING,2209,502563.000,02000020,98f9,16809;
VALID,0,502563.000,502563.000,1.645927507e-01,-3.828977102e-02,0.000000000,
3.705045540e-02,8.770260153e-04,0.000000000,8.770260153e-04,3.242199713e-03,
0.000000000,0.000000000,0.000000000,0.000000000,0.227,-4.714598090e-02,FALSE
*6572f493

The CLOCKMODEL log can be used to monitor the clock drift of an internal oscillator once the CLOCKADJUST mode has been disabled. Watch the CLOCKMODEL log to see the drift rate and adjust the oscillator until the drift stops.

Field	Field type	Description	Format	Binary Bytes	Binary Offset
1	Log header	CLOCKMODEL header For information about log headers, see ASCII, Abbreviated ASCII or Binary.		H	0
2	status	Clock model status. See Table: Clock Model Status	Enum	4	H
3	reject_count	Number of rejected instantaneous clock errors	Ulong	4	H+4
4	propagation_time	Time of last propagation	GPSec	4	H+8
5	update_time	Time of last update	GPSec	4	H+12
6	bias	Receiver clock bias (m)	Double	8	H+16
7	rate	Receiver clock bias rate (m/s)	Double	8	H+24
8	Reserved		Double	8	H+32
9	bias_variance	Receiver clock bias variance (m²)	Double	8	H+40
10	covariance	Receiver clock bias/bias rate covariance (m²/s)	Double	8	H+48
11	Reserved		Double	8	H+56
12	Reserved		Double	8	H+64
13	rate_variance	Receiver clock bias rate variance (m²/s²)	Double	8	H+72
14	Reserved		Double	8	H+80
15	Reserved		Double	8	H+88
16	Reserved		Double	8	H+96
17	Reserved		Double	8	H+104
18	instantaneous_bias	Last instantaneous receiver clock bias (m)	Double	8	H+112
19	instantaneous_rate	Last instantaneous receiver clock bias rate (m/s)	Double	8	H+120
20	Reserved		Bool	4	H+128
21	xxxx	32-bit CRC (ASCII and Binary only)	Hex	4	H+132
22	[CR][LF]	Sentence terminator (ASCII only)	-	-	-

Clock Model Status
Clock Status (Binary)	Clock Status (ASCII)	Description
0	VALID	The clock model is valid
1	CONVERGING	The clock model is near validity
2	ITERATING	The clock model is iterating towards validity
3	INVALID	The clock model is not valid