Novatel 15a Car Satellite TV System User Manual


 
66 EuroPak-15a Receiver User Manual Rev 5
Chapter 5 Commands
5.3.16 STHRESHOLD Control Signal Thresholds
This command controls signal acquisition and steady-state-lock signal thresholds. The sigchan, acqui, lock and
crosscorr fields must have values. They set the thresholds for the specified L1 channel.
See also
Table 56 on Page 120 for the mapping of signal channels.
When you change this command, the selected channel loses lock and the locktime for its tracking satellite
is reset to zero.
Syntax: Message ID: 803
Example:
STHRESHOLD 0 35 20 35
STHRESHOLD SIGCHAN ACQUI LOCK CROSSCORR
Field
Field
Name
Valid Values Description Format
Binary
Bytes
Binary
Offset
1 header
This field contains the Abbreviated ASCII command name. See Section
4.1 on Page 31.
H 0
2 sigchan 0-15
The parameters should be applied
to this signal channel.
Ulong 4 H+20
3 acqui 25-80
Acquisition power threshold in
dBHz.
ULong 4 H
4 lock 10-80
Steady-state tracking lock
threshold in dBHz.
ULong 4 H+4
5 crosscorr
10-80
Specifies the cross-correlation
power threshold in dBHz, at which
point, the checks are performed.
ULong 4 H+8