NavCom LAND-PAK Rev.N - Manual (Page 159)

Technical Reference Manual Rev. N
Blk = All; Blu = IOP w/Internal Radio ; Red = IOP & LBM ; Grn = Engine only
157
0xd3 - LBM DSP Status Block - 70 bytes
Record
Usage Command - No
Response - Yes Input: Not used;
Output: reports LBM performance information
Ref Message Field Description
Data
Type
Units Range Scale
Byte
Count
STX 02 (hex) U08 1
PRA1 99 (hex) U08 1
PRA2 66 (hex) U08 1
ID d3 (hex) U08 1
Length 0x0046 U16 2
W1
DSP Status – used for DSP Software
Debug
U16 2
W2 SF channel number S32
500-180=320
to
500+180=680
-180 to 180 =
Satellite
Longitude
4
W3
SF signal FEC quality.
20 or less is considered good
U16 2
W4 Expected baseband frequency S16 Hz 2
W5 Tracked baseband frequency R64 Hz 8
W6 SF signal C/N0 R64 dBHz 8
W7 Oscillator frequency error R64 Hz 8
W8 SF downlink circular buffer input pointer U16 2
W9 SF downlink circular buffer output pointer U16 2
W10 DSP Software major version U08 1
W11 DSP Software minor version U08 1
W12
True if SF parser is receiving valid
packets from downlink
U08 1
W13
True if DSP is locked on to downlink
signal
U08 1
W14
SF parser packet framing re-
synchronization count
U16 2
W15 Authorization Status (See 0xd1.W3) U08 1
W16
True if SF is set to an alternate channel
(manual override)
U08 1
W17
Percentage of idle packets in received
SF data
U08 1
W18
Percentage of bad packets in received
SF data
U08 1
W19 Reserved U16 2
W20 Reserved U16 2
W21 Reserved U16 2
W22 Reserved U16 2
W23 Reserved U16 2
W24
SF downlink circular buffer lost data
count
U16 2
W25
SF downlink Doppler (Filtered tracked-
expected)
R32 Hz 4
W26 Last Doppler Frequency S16 Hz 2
CKSM Checksum U08 1
ETX 03 (hex) U08 1