Table 19: Command Parameters; Table 20: Command Parameter Examples - NorthStar 8700 Technical Reference Manual

Section 10 - NMEA protocols
Extended command
$PSLIB,304,100,M(CR)(LF)
$PSLIB,304,100(CR)(LF)
PAGE 44
bitrate is unknown, in which case it's determined automatically.) If a cor-
rect broadcast bitrate is specified, the beacon receiver uses that additional
information to improve acquisition and tracking of weak and noisy sig-
nals.
$PSLIB,f,b,command,(CR) (LF)
Special beacon receiver DGPS receiver functions are requested by
extended NMEA 0183 format commands, which include a command
parameter. Unless otherwise indicated below, the frequency and bitrate
parameters are ignored. The command parameter is optional and can be
one of the following capital letters:

Table 19: Command parameters

Command Description
letter
Output parsed RTCM SC-104 ASCII messages to the
A
monitor port.
Do not output parsed RTCM SC-104 messages
B
(default).
Erase the stored beacon directory and perform a
C
power-on reset.
List the stored beacon directory to the monitor port.
D
(Test Mode 2) Tune both channels to the specified
F
frequency and bitrate with AFC disabled.
Perform a power-on reset.
R
Skip channel 2 to next search frequency.
S
(Test Mode 1) Tune both channels to the specified
T
frequency and bitrate with AFC enabled.
Add to the stored beacon directory a tentative entry
M
with the specified frequency and bitrate (this entry
will be deleted after some time if the 8800 doesn't
confirm its validity).
Delete the specified frequency and bitrate entry from
E
the stored beacon directory.

Table 20: Command parameter examples

Description
Create a beacon directory for 304.000 kHz
@ 100 bps.
Demodulate 100-bps data from a DGPS
beacon broadcast at 304 kHz.
05/01/97 REV H