REBEL CTPinout

REBEL CT: connector pinouts

Updated

Find the pin assignments and electrical limits for the REBEL CT CAN FD USB connector, 25-way OBD and INST connector and antenna sockets.

Connectors on REBEL CT

REBEL CT CAN FD (ordering code INF2105.01P) records 2 CAN 2.0 buses, 2 CAN FD buses and 2 LIN channels. It has these connectors:

  • USB. A USB type B receptacle for data transfer between the PC and the logger.
  • OBD and INST. A male 25-way D-Sub with nuts carrying every network, the analogue and digital channels, the supply and the wake-up pin.
  • GPS. A male SMB socket for the external antenna of the optional GNSS upgrade.
  • Cellular. A male RP-SMA socket for the antenna of the optional 4G LTE module, labelled GPRS on older units.
  • Wi-Fi. A female RP-SMA socket for the antenna of the optional Wi-Fi module.
  • SD card slot. It sits behind a splash-proof flap. Press the flap at the top and lift it to reach the card.
INF4204.1 multi-connect cable: one 25-way D-Sub fanning out to five labelled leads, Dig/An, AUX/CAN1, CAN2/LIN0, CAN0/PWR and CAN3/LIN1
The supplied INF4204.1 multi-connect cable breaks the 25-way connector out to five leads.

For the INF4204.1 lead pinouts, see REBEL breakout cables: INF4203 and INF4204.1 multi-connect pinouts.

USB connector

REBEL CT and LT USB connector, type B USB TYPE B · FEMALE REBEL CT and LT USB connector, type B Front view looking into the USB receptacle on the logger. 1 2 3 4 2D− 1VBUS +5 V 3D+ 4GND Power Ground Linked pins are a differential pair
REBEL CT USB connector, type B receptacle
Pin Signal
1 VBUS, USB supply 5 V
2 D−, USB data minus (NRZI line coding)
3 D+, USB data plus (NRZI line coding)
4 Ground

USB and the enclosure are galvanically isolated. This isolates the measurement from the rig and protects the PC connected to the logger.

OBD and INST connector

The OBD and INST connector is a male 25-way D-Sub with nuts. The drawing shows the face of the connector on the logger.

REBEL CT OBD & INST connector, 25-way D-sub D-SUB 25 · MALE REBEL CT OBD & INST connector, 25-way D-sub Front view of the male connector on the logger. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1Analogue in 3 2LIN1 3CAN3-L (FD) 4Analogue in 1 5Wake-up 6CAN1-L 7CAN0-L 13CAN2-L (FD) 12Digital I/O 0 11Digital I/O 2 10+4.5 V instr. supply 9Supply +4.5 to +36 V 8NC 14Analogue in 2 15LIN0 16CAN3-H (FD) 17Analogue in 0 18Analogue GND 19CAN1-H 25CAN2-H (FD) 24Digital I/O 1 23Digital I/O 3 / +Vd 22Power GND 21GND 20CAN0-H Power Ground CAN bus pins Linked pins are a differential pair NC: not connected
REBEL CT OBD and INST connector, male 25-way D-Sub
Pin Signal Notes
1 Analogue input 3 Keep within -10 to +10 V
2 LIN 1 LIN channel 1
3 CAN-L, CAN 3 CAN 2.0 or CAN FD
4 Analogue input 1 Keep within -10 to +10 V
5 Wake-up Pull to ground for more than 20 ms to wake the logger from sleep
6 CAN-L, CAN 1 Medium-speed bus (MS), CAN 2.0
7 CAN-L, CAN 0 High-speed bus (HS), CAN 2.0
8 Not connected Leave unwired. K-Line is a REBEL LT function.
9 Supply 4.5 to 36 V DC
10 +4.5 V instrumentation supply 100 mA maximum, see the limits below
11 Digital I/O 2 Input or output, see the limits below
12 Digital I/O 0 Input or output, see the limits below
13 CAN-L, CAN 2 CAN 2.0 or CAN FD, labelled the instrumentation bus
14 Analogue input 2 Keep within -10 to +10 V
15 LIN 0 LIN channel 0
16 CAN-H, CAN 3 CAN 2.0 or CAN FD
17 Analogue input 0 Keep within -10 to +10 V
18 Analogue ground Reference for the analogue inputs
19 CAN-H, CAN 1 Medium-speed bus (MS), CAN 2.0
20 CAN-H, CAN 0 High-speed bus (HS), CAN 2.0
21 Ground Signal ground, for example to pin 5 of the vehicle OBD connector
22 Power ground For example to pin 4 of the vehicle OBD connector
23 Digital I/O 3 or auxiliary power output +Vd Can power one instrumentation module
24 Digital I/O 1 Input or output, see the limits below
25 CAN-H, CAN 2 CAN 2.0 or CAN FD, labelled the instrumentation bus

CAN 0 and CAN 1 are the CAN 2.0 buses. CAN 2 and CAN 3 carry CAN FD in ISO or non-ISO frames, or classic CAN 2.0.

Electrical limits

The REBEL CT manual gives no separate digital I/O table. The figures below are the REBEL LT ones, which the REBEL CT pin tables also carry.

REBEL CT pin limits
Pin or function Limit
Analogue inputs Keep within -10 to +10 V
Digital input thresholds Low below 2 V, high above 2.5 V
Digital input voltage Up to 36 V absolute maximum. Keep inputs within 0 to +12 V.
Digital output current 50 mA maximum, open collector
+4.5 V instrumentation supply (pin 10) 100 mA maximum. Above that the output voltage drops.
Supply (pin 9) 4.5 to 36 V DC

For wiring examples, see REBEL and K-Series: wiring the wake-up pin and digital I/O.

Antenna connectors

REBEL CT antenna sockets (optional)
Socket Type Pin 1 Pin 2
GPS Male SMB RF signal input Ground
Cellular (GPRS) Male RP-SMA RF signal input Ground
Wi-Fi Female RP-SMA RF signal input Ground

Each socket is fitted only when the logger is ordered with that upgrade. GNSS, the accelerometer, the gyroscope, Wi-Fi and 4G LTE are all upgrades on REBEL CT.

CAN termination

Terminate each end of a CAN bus with a 120 Ω resistor across CAN-H and CAN-L. The logger has DIP switches inside for this. Set a channel's switch to on when the logger is at the end of that bus. If you cannot reach the switches, terminate the bus with an external 120 Ω terminator.

A linear CAN bus with a terminator at each end CAN BUS · TOPOLOGY A linear CAN bus with a terminator at each end CAN-H CAN-L 120 Ω terminator 120 Ω terminator ECU ECU Logger Stub: keep it short Logger ground tied to the vehicle ground Terminate only the two physical ends of the bus. With the power off, CAN-H to CAN-L measures about 60 Ω.

To check a bus before you fit the logger, see CAN bus wiring: termination, cable length and grounding.

Safety warnings

Cables for REBEL CT

Cables that connect to REBEL CT
Part What it does Guide
INF4204.1 Multi-connect cable, supplied with the logger, with CAN0/PWR, AUX/CAN1, CAN2/LIN0, CAN3/LIN1 and Dig/An leads REBEL breakout cables
INF4213 Screw terminal for the Dig/An lead REBEL breakout cables
INF4102 OBD type B plug straight to the 25-way connector OBD and power adapter cables
INF4103 OBD type B plug to a 9-way D-Sub, used with the CAN0/PWR lead OBD and power adapter cables

Discontinued REBEL variants use other cables. See Legacy REBEL cables: INF4100, INF4202 and the CT FlexRay port.

Next: REBEL breakout cables: INF4203 and INF4204.1 multi-connect pinouts.

Products in this guide

REBEL CT

Automotive engineering logger

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