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 |
