Payload Interface Unit (PIU)

Payload Interface Unit (PIU) is the on-board equipment used for relaying telecommands received from on-board computer to the Ku-band and X-band equipment respecting to the equipment interface. PIU is also tasked for collecting telemetries from the Ku-band and X-Band Payload equipment and sending them to on-board computer.

​​​​ ​Technical Specifications
​​​​Controlled and monitored Payload equipment Active Equipment
​Switch Matrices
​Antenna Deployment and Positioning Mechanism
​​​​Redundancy ​​​​Internal Redundancy
​​​​Satellite Platform Data Interface ​​​​MIL-STD-1553B
​​​​Satellite Power Bus Interface ​​​​100V DC
​​​​Payload Equipment Interface ​​​D-Sub Connectors
​​​​Nominal Input Voltage ​​​​100V ± 3V
​​​​Maximum Operational Voltage ​​​​110V
​​​​Low Voltage Turn-off ​​​​85V ± 3V