Download Telemetry and Telecommand (TMTC)

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PRODUCT SHEET
COTS-based Avionics
Telemetry and Telecommand (TMTC)
SITAEL Telemetry/Telecommand (TMTC) is a communication device suitable for LEO orbits. The TMTC is capable to receive
telecommands from Ground Station and send telemetry data to Earth at a datarate up to 153.6 kpbs.
The digital architecture is based on ARM Cortex-M4 32 Bit microcontroller and is equipped with watchdog, OVP and SEL
protection. It includes redundant CAN BUS and redundant RS-422 interfaces and up to 48 Mbytes of flash memory for data
storage.
Computing units have undergone TID ( > 30 Krads) and SEE test. SEU protection is implemented at board level.
The RF front-end is based on low power, low cost integrated circuit. It provides transmission capability including ReedSolomon channel coding, modulation and frequency up-conversion and telecommand reception with Reed-Solomon decoding
and low noise amplification. The TX chain is HPA-ready in order to select the most appropriate RF output power.
Its internal components are guaranteed for a standard lifetime of about 2 years that could be extended depending on the
operating conditions.
Features
SITAEL TMTC

Datarate up to 153 kbps @ UHF frequency band

Downlink for telemetry data (transmission)

Uplink for telecommand (reception)

JTAG interface

Pulse Command I/F for switch OBC control and
firmware update
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
SMA RF connectors

Hybrid coupler and antenna system available
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PRODUCT SHEET
COTS-based Avionics
Technical Information
SPECIFICATIONS
Receiver sensitivity
Up to -118 dBm
Transmitter output power
-20 to +10 dBm
Data rate
4.8 to 153.6 kbps
Bus Input Voltage (V)
+15 V to +50 V
Interfaces
RS232, CAN-Bus
Storage Temperature: -40 °C to +85 °C
Environment
Operating Temperature: -25 °C to +70 °C
Power Consumption
2 W (peak, 10 dBm RF power) / 1.8 W (typ.)
Size
287x185x15 mm (L x W x H)
Mass (g)
≤ 300
General remarks

Industrial and military grade components have been extensively tested for space operations

Computing units have undergone:
-
Total Ionizing Dose ( > 30 Krads)
-
Single Event Effect test

SEU protection is implemented at board level

SEFI mitigation techniques applied at SW level
SITAEL S.P.A | Via San Sabino, 21 - 70042 Mola di Bari (BA) Italy | [email protected] | www.sitael.com
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Copyright © 2015 SITAEL S.p.A. All Rights Reserved.
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