Gssip Message Format - Spectracom SecureSync User Reference Manual

APPENDIX
the official NMEA RMC MESSAGE (that corresponds to the 3.01 NMEA 0183 standard and is
another time code format supported by SecureSync.
The BBC RMC message (BBC-05) corresponds to Version 2 of the NMEA 0183 standard, fol-
lowing the description below:
E x a m p l e m e s s a g e :
$GPRMC,123519,A,4807.038,N,01131.000,E,022.4,084.4,230394,003.1,W*6A
Where:
RMC
123519
A
4807.038,N
01131.000,E
22.4
84.4
230394
003.1,W
*6A
8.1.14

GSSIP Message Format

The GSSIP 1 format includes 3
a SAASM GPS used in a SINCGARS interface. The messages are the Buffer Box (253), Time
Transfer (5101), and the Current Status (5040).
The ICD-GPS-153C protocol defines the format of these messages. The Current Status and Time
Transfer are sent once per second (1Hz). The Buffer Box is sent once every 6 seconds (1/6 Hz).
The purpose of these three messages is to emulate a SINCGARS interface connection to a
SAASM GPS. SecureSync generates these messages emulating the Time and 1PPS transfer
behavior of the SINCGARS interface. An external device compatible with the SINCGARS inter-
face can attach to an ASCII Output from SecureSync and receive time and 1PPS as if com-
municating with and ICD-GPS-153C compatible SAASM GPS.
1
GSSIP = GPS STANDARD SERIAL INTERFACE PROTOCOL
484
Recommended Minimum sentence C
Fix taken at 12:35:19 UTC
Status: A=active or V=Void.
Latitude 48 deg 07.038' N
Longitude 11 deg 31.000' E
Speed over the ground in knots
Track angle in degrees True
Date—23rd of March 1994
Magnetic Variation
The checksum data, always begins with *
ICD-GPS-153C messages which are used to support emulation of
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