Template:SEDSAT-2 Interface CDH

Inputs edit inputs

To: Command and Data Handling - ADCS - Input attitude and orientation
To: Command and Data Handling - ADCS - Input on/off state
To: Command and Data Handling - ADCS - Input state of attitude control system (inactive/adjusting orbit)
To: Command and Data Handling - Power - Input current draw
To: Command and Data Handling - Power - Input voltage level
To: Command and Data Handling - Power - Input state-of-charge (SOC) *may be derived from other inputs
To: Command and Data Handling - Power - Input active solar panel info per panel (*expand to SOC, temperature, etc.)
To: Command and Data Handling - Payload - Input on/off state
To: Command and Data Handling - Payload - Input active mode (is payload imaging)
To: Command and Data Handling - Payload - Input compressed images
To: Command and Data Handling - Communications - Input on/off state
To: Command and Data Handling - Communications - Input xmit/non-xmit state
To: Command and Data Handling - Communications - Input reset signal (force reset of CDH in the event of critical failure)
To: Command and Data Handling - Structure - Input separation from launch vehicle (LV) signal

Outputs edit outputs

From: Command and Data Handling - ADCS - Output power on/off
From: Command and Data Handling - Payload - Output power on/off
From: Command and Data Handling - Payload - Output signal indicating proper orientation for imaging
From: Command and Data Handling - Payload - Output signal for compression/no compression
From: Command and Data Handling - Power - Output ability to drain power-positive (excess) power
From: Command and Data Handling - Communications - Output stored science data (images)
From: Command and Data Handling - Communications - Output stored state-of-health data (telemetry)
From: Command and Data Handling - Ground - Output formatted information

Environments edit environments

On: Command and Data Handling - CDH will continually collect and store state-of-health (SOH) data from all systems
On: Command and Data Handling - CDH will be shielded from radiation (as much as possible)
On: Command and Data Handling - CDH will react to low power information from the Power subsystem
On: Command and Data Handling - CDH will react to communications commands received from Ground via Communications system
On: Command and Data Handling - CDH will remain powered on at all times after separation from launch vehicle (LV)
On: Command and Data Handling - CDH will have emergency reset ability (via Communications subsystem) in the event of non-responsiveness