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M-Max 400 USO-U

Rugged Industrial Error-Free Computer System for Railroad Applications
  • Details
  • Specification
  • 2 independent subsystems in a single frame
  • Shock handling up to 6g, Vibration up to 2g
  • IP66 rated dust and moisture protection
  • Operating Temperature: -40 to +65 °C

M-Max® 400 USO-U is a compact, highly reliable rugged computer system for onboard and stationary applications. It is a significantly upgraded version of our M-Max® 400 ST/USO system, which has proved extremely successful on stationary objects of railway infrastructure. The system provides error-free data processing for railroad signaling systems.

M-Max® 400 USO-U consists of two independent units that repeatedly synchronize / swap data and perform a series of cross-checks. Both subsystems of the M-Max® 400 USO-U are separated into two independent units combined in a frame for 19″ rack mounting. Each unit has its own SBC, 128 GB industrial grade SSD, and capacitive energy storage, providing up to 4 seconds of uptime in case of power loss. Watchdog timer has been added to the power supply.

To increase maintenance abilities, the system was modified to enable replacement of the RTC batteries and data storage without removal of the entire frame from the rack.

Technical specifications (per each subsystem):
Processor: Intel Atom E3845 1.91 GHz
Storage: 128 GB SSD, 2.5" SATA3, MLC
Interfaces: 2x CAN (isolated)
3x RS-232/422/485 (isolated)
2x Gigabit Ethernet
Service connector:
1x VGA
2х USB 2.0
1х RS-232
Operating system: Linux / Windows / QNX
Power: +12 to +36 V DC (isolated)
Power consumption: 17 W maximum
Indication: 2x Ethernet
2x per each serial port (Rx/Tx)
1х Power ON
1х External power
Special features: Watchdog timer
Enclosure: Aluminum enclosure
Passive cooling system (no fans)
Mechanical (W x H x L): Each subsystem: 184 х 153 x 214.8 mm
A single 4U frame for 19” rack mounting

Environmental and physical specifications

Dust/Moisture: IP66
Operating temperature: -40 to +65 °C
Humidity: Operating: 5 to 95 % at +25 °C, non-condensing
Vibration: Operating acceleration amplitude up to 2g (5–500 Hz)
Shock: Maximum peak shock acceleration up to 6g (3 ms)
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