iSXblue/SXBlue II GNSS Series Technical Reference Manual
95
5.4.2
$PCSI,1 and $PCSI,2
This command is used to obtain beacon status data from channel 0 or channel 1 of the internal beacon
demodulator. The resulting $PCSI,CS0 or $PCSI,CS1 message will be returned to the same port from
which the command was sent and at the desired rate. It has the following format:
$PCSI,1,n<CR><LF> LF or $PCSI,2,n<CR><LF> LF
($PCSI in Capital letters)
where “n” is the desired output rate of the CSx message. Two responses will be sent by the receiver: the
“Acknowledge” and the CSx responses. The acknowledge response is sent once and if “n” is not
specified, the CSx message is also sent once by the receiver.
Acknowledge Response:
$PCSI,ACK,1,n or $PCSI,ACK,2,n
CSx Response:
$PCSI,CSx,Pxxx-y.yyy,SN,fff.f,F,mmm,M,SS,SNR,MTP,WER,ID,H,T,G
Data Field
Description
CSx
CS0 for channel #0 (from $PCSI,1) or CS1 for channel #1 from ($PCSI,2)
Pxxx-y.yyy
Resident Beacon engine firmware version
SN
Internal Beacon engine serial number
fff.f
Beacon frequency (being searched or tracked) in kHz (283.5 to 325)
F
Frequency mode of the receiver, either Manual “M” or Automatic “A” or Database “D”
Mmm
MSK bit rate being searched or tracked
M
MSK rate mode of the receiver, either Manual “M” or Automatic “A” or Database “D"“
SS
Signal Strength of the received signal. Higher the better.
SNR
Signal to Noise Ratio. Higher the better.
MTP
Message Throughput. Higher the better.
WER
Word Error Rate. It displays the percentage of bad 30-bit RTCM words is the last 25 words. Lower
the better.
ID
Beacon Station ID
1024 (undefined), 0 – 1023 (valid range)
H
Health of tuned Beacon Station
8 (undefined), 0 – 7 (valid range)
T
$PCSI,1 or $PCSI,2 output period (0 to 99)
G
Automatic Gain Control in dB (0 to 48 dB)
After a power cycle, the $PCSI,CSx will no longer be output. If you wish to have the CS0 message output
for every power cycle, use the following derivative of this command:
$PCSI,1,n,S<CR><LF>
($PCSI and S in Capital letters)
Response:
$PCSI,ACK,1,n,S
Where “n” is the desired output period in seconds (from 0 to 99). The ‘S’ field must be present and be
capitalized as well as ‘$PCSI’.
