Check any REXGEN Air figure before you design an installation: networks, inputs, positioning, LTE, storage, security, electrical limits and physical data.
Dimensions in millimetres. Allow extra length for the antenna cables at the front and the Mini50 plug at the back.The numbers match the elements table.
Logger elements
Number
Element
1 to 4
Status LEDs 1 to 4
5
Micro USB connector
6
FAKRA Code C connector (blue) for the GNSS antenna
7
SIM slot, behind a lid
8
FAKRA Code D connector (Bordeaux) for the LTE antenna
9
Mounting holes (four)
10
Molex Mini50 dual-row 24-way connector
Networks and protocols
CAN, CAN FD and LIN
Function
REXGEN Air
CAN and CAN FD
2 or 4 buses, depending on the model. CAN to ISO 11898-1 up to 1 Mbit/s. ISO and Bosch CAN FD up to 8 Mbit/s. CAN 2.0 parts A and B.
Physical layer
Meets ISO 11898-2:2016 and ISO 11898-5:2007
Identifiers
11-bit (CAN 2.0A) and 29-bit (CAN 2.0B)
Throughput
Up to 20,000 messages per second
Bit rate
Auto-detected or set manually. Bit timing selectable.
Error frames
Logs bit-stuffing, form, CRC, bit and acknowledgement errors
Retransmission
Configurable retransmission of frames that lost arbitration or were disturbed by errors
Prescaling
Record by time (every X ms) or by data (when a chosen byte changes)
Filters
Up to 200 standard or extended ID filters per channel (range and acceptance). J1939 source address, destination address and PGN filters.
Triggers
CAN ID, CAN signal, digital input and J1939 DM1 counter
Transmit
Periodic transmit lists per channel, for example OBD-II requests, with message linking
Silent mode
Configurable listen-only mode
DBC
Supported for decoding and transmit
LIN
1 bus, master or slave mode, publisher or subscriber. LIN 1.3, 2.0, 2.1 and SAE J2602. Custom frame lengths.
Parallel recording
Up to 4 CAN buses and the LIN bus at the same time
Protocols
Raw CAN and CAN FD, LIN, SAE J1939 (including DM1), FMS, CANopen, NMEA 2000, OBD-II and UDS (service 0x22)
Inputs and outputs
Analogue and digital inputs
Function
REXGEN Air
Analogue inputs
2 bipolar single-ended inputs, ±10 V, 12-bit, up to 1 kHz, input impedance over 50 kΩ
Analogue safe applied voltage
±28 V
Digital inputs
2 unipolar single-ended inputs. Low below 0.8 V, high above 2.5 V, up to 28 V
Digital safe applied voltage
±28 V
Relay driver
1 power stage relay driver output, optional
Instrumentation supply
5 V for external sensors, 100 mA maximum
GNSS and IMU
Positioning and motion sensors
Function
REXGEN Air
GNSS module
u-blox M8U, 30 Hz, with dead reckoning and geofencing. Some units have the u-blox M8Q, 18 Hz, which supports neither.
Amazon S3, S3-compatible storage, FTPS servers and the managed web app
Protocols
FTP, FTPS, HTTP and HTTPS. Data and over-the-air updates can travel over HTTPS (TLS 1.2).
FTPS
Encrypts the log-in. Data channel encryption (PROT P) is not supported, so files travel unencrypted.
Over the air
Configuration and firmware over the air (COTA and FOTA), signed. Configurable sync rate. Can be disabled.
Heartbeat
Status file to the server and upload state reporting. Optional CAN heartbeat frame with device information, status, storage used, RTC time and configuration details.
Snapshot
Decodes chosen CAN signals and sends them to the server periodically
Access control
Access rights across loggers and users through S3 policies (AWS upload). S3 credentials can be stored encrypted in the configuration on the logger.
Storage, software and security
Storage, software and security
Function
REXGEN Air
Storage
16 or 32 GB eMMC, soldered in and not removable
Cyclic logging
FIFO, enabled by default. Once the eMMC is full, the oldest data makes way for new data.
Data integrity
FIFO and partitioning keep the most recent data safe
File split
By size (10 to 500 MB) and by time period
Device ID
Globally unique, so every log file name is unique
Real-time clock
Battery-backed, with 10 µs timestamp resolution. Local time zone configurable (default UTC). Synchronised from the LTE network time or from a CAN message, such as the internal GNSS time.
File formats
Native RXD and RXE. Export to ASAM MDF4, CSV, MATLAB, ASC, BLF and TRC. Parquet through the cloud conversion function.
Software
REXDESK configuration software (free), API and command line interface. REXLIBRARY file conversion library, with source on GitHub. AWS Lambda example application for conversion in the cloud.
Security
Signed firmware, device locking and SHA
Firmware
Free updates that add features
Status LEDs
4
PC interface
Micro USB 2.0 as standard. USB through the Mini50 connector as a factory option.
The USB connection through the Mini50 connector needs a hardware change. Ask for it when you order. Otherwise, the logger must go back to Influx Technology for the change.
Electrical data
Operating voltages
Bus or signal
Operating voltage
Power supply (Molex connector)
+5 V to +27 V
Power supply (USB)
+4.5 V to +5.5 V
CAN and CAN FD
+2 V to +3 V
LIN
0 V to +24 V
Digital inputs
0 V to +28 V
Analogue inputs
±10 V
Protection and power
Function
REXGEN Air
CAN transceiver protection
Bus fault protection ±58 V, thermal shutdown, common mode input ±12 V, TXD dominant timeout and under-voltage protection
LIN transceiver protection
±8 kV HBM and ±2 kV CDM ESD, bus fault protection and TXD dominant timeout
Supply protection
Reverse voltage protection, lost if the housing is grounded externally
Running current
Under 120 mA at 12 V without cloud upload. Under 300 mA with cloud upload.
Sleep current
Under 21 mA in sleep. Under 10 mA in deep sleep.
Power saving
Wake on CAN, wake on movement, power down and sleep modes
Physical and environment
Physical data
Function
REXGEN Air
Dimensions
100 × 65 × 30 mm (L × W × H). 109.5 mm long over the antenna ports.
Weight
112 g
Enclosure
PC and ABS, stackable
Mounting
4 mounting holes, screws supplied
Connector
Molex Mini50 dual-row 24-way
Protection rating
IP50. Cover the logger where water may get in.
Operating temperature
-40 °C to +85 °C
Humidity
Up to 90%
Warranty
12 months, with support during the warranty period
