146031-01 is the part number * * of the rear I/O board (backplane/small card) of the 3500/22M (TDI) module, and when combined with 288055-01 (front board), it forms the complete 3500/22M**
1、 Model relationship (crucial)
Complete module: 3500/22M (TDI transient data interface)
Front panel (display/interface surface): 288055-01
Rear panel (I/O/bus surface): 146031-01
Full name writing: 3500/22-01-01-00 (front panel+back panel combination)
Simple note: 288055-01=front panel; 146031-01=Rear panel; Combined=3500/22M.

2、 146031-01 Rear Panel Function
Rack bus interface: Connect to the 3500 backplane and communicate with various monitoring cards (40M/42M/44M…)
Ethernet interface (back panel):
Electrical port: 10/100Base TX
Optical port: 100Base FX (multimode fiber)
System power connection: Take power from the rack power supply (+5V, ± 12V)
No user operable components: only sockets/connectors, status lights are on the front board 288055-01
3、 Key parameters (back panel+whole machine)
Power consumption: 10.5 W
Installation slot: Rack slot 1 (adjacent to the power supply), each rack must have one piece
Data capability: up to 48 channels of synchronized waveforms, with a maximum bandwidth of 500 kHz
Role: Network administrator+data collection, not involved in protection tripping (protection is completed by 4xM card hard circuit)
4、 Difference from 288055-01 (distinguish at a glance)
288055-01 (front panel): Exposed, with OK/TX-RX lights, USB-B port, nameplate
146031-01 (Back Panel): Inserted into the rack, only the Ethernet cable/fiber optic socket, bus/power outlet are visible, not visible
5、 Common uses
Thermal power/nuclear power turbine/generator TSI (vibration, displacement, speed monitoring)
Compressor, gas turbine, high-speed motor status monitoring
Send waveform/trend to System 1 and Modbus/4-20mA data to DCS