(see also complete list of DBCP recommended formats)
SVP Barometer Drifter Message Format
La Jolla, CA 92093-0230
Andrew Lowy Sybrandy
Barometer Data Record:
A data record reports twelve archived hourly pressure samples, the most recent pressure, sea surface temperature (SST). instrument status and checksum.
Argos Message Format:
The barometer data record is divided into two 128 bit Argos messages (page 0, and page 1). Each message consists of seven bytes of header data followed by nine of eighteen bytes of archived pressure data for a total of 16 bytes per message. The header data include most recent pressure, sea surface temperature (SST), instrument status and checksums. The archived pressure of page 0 are pressures with ages of 2, 3, 6, 8, 10 and 12 hours relative to the most recent pressure sample. The archived pressure of page 1 are pressures with ages of 1, 4, 5, 7, 9 and 11 hours relative to the most recent pressure sample.
Transmission sequence is Page 0 followed by page 1.
Pressure: (Pressure (mB) × 10) - 8000 Range 805 to 1209.5 mB SST: Manufacturer Specific (-2° to 38°C; 0.1° resolution) Battery Voltage: ((Current Battery Voltage ÷ New Battery Voltage) × 300) - 75 Drogue Sensor: Manufacturer Specific (0-255)
Each message begins with 7 bytes of header data in the following format:
Least significant 8 bits of the sum of the last 15 bytes of message.
Page 0 archived data are 9 bytes in the following format:
Page 1 archived data are 9 bytes in the following format:
General Sampling Specification:
Specification for Hourly Pressure Measurements:
Specification for 15-minute SST Measurements:
Posted February 27, 1997