The TIDE/PSI command mnemonics are listed below by command group. There are three types of commands: spacecraft pulse commands and major and minor instrument commands. The spacecraft pulse commands are Polar spacecraft commands. For some the spacecraft pulse commands, there is no indication in the TIDE telemetry that the command was executed. The major instrument commands require no input parameters, just the command. The minor commands require at least one input parameter. Whenever a major or minor command is issued, the command counter changes as does the corresponding engineering data value or instrument parameter(s).
The tables below include the command mnemonic, its type (major, minor, pulse), whether or not the command is hazardous, when the command is executed, the number of fields in the minor command, the op code, limits for each minor command field, the housekeeping and/or instrument parameter tide_lz processing software variable name, and a brief description. The when column indicates when the command is executed. All pulse and PSI commands are executed on receipt. The TIDE major and minor command can be executed on receipt (1), spin boundary (2), superspin boundary (3), stored superspin (4), other command required (5), spin or superspin boundary (6), or unknown (0). The operations software at GSFC converts the command mnemonic to the appropriate serial command. The serial command is sent to the spacecraft. The op code is the hex code used in the serial command. See the TIDE Flight Software Requirements Document for details about serial commands.
TIDE Home Page | Documentation Menu | Operations Menu
Last Updated: September 2008