Trimble Outdoors THUNDERBOLT 64057-00-ENG User Manual
Page 62
A Trimble Standard Interface Protocol
60 Trimble ThunderBolt E GPS Disciplined Clock User Guide
Command Packet 0x70: Filter Configuration
This packet provides control for the available filters. The PV filter smoothes position
data when the antenna is moving and attempts to reduce the effects of position
disturbances, which include reflected signals and small outages of DGPS corrections.
Command Packet 0x70 enables or disables the P/V Filter, Static Filter, Altitude Filter,
Kalman filter. Filter selection is restricted by the following:
•
The PV filter must be turned on before the Static Filter can operate.
•
The Kalman filter takes precedence, i.e., enabling the Kalman filter will disable
the PV, Static, and Altitude filters
To request the filter operation state, send Command Packet 0x70 with no data bytes.
Report Packet 0x70: Filter Configuration
This packet reports the current configuration for the available filters.
9-12
VDOP
Single
VDOP
13-16
TDOP
Single
TDOP
17 - n
SV PRN
SINT8
± (1-32)
PRN
Byte
Item
Type
Value
Meaning
0
PV filter
UINT8
0
1
Off
On
1
Static filter
UINT8
0
1
Off
On
2
Altitude filter
UINT8
0
1
Off
On
3
Kalman filter
UINT8
0
1
Off
On
Byte
Item
Type
Value
Meaning
0
PV filter
UINT8
0
1
Off
On
1
Static filter
UINT8
0
1
Off
On
2
Altitude filter
UINT8
0
1
Off
On
3
Kalman filter
UINT8
0
1
Off
On
Byte
Bit
Item
Type
Value
Meaning