The mode each PHY is displayed by the status LED within the corresponding
membrane button.
Switching LED status between T1S ports (Comet2 only)
RAD-Comet2 has 2x T1S ports but only 1 set of status LEDs.
The color of the LED indicates which T1S port’s status is displayed
as listed below. To change which port’s status
is displayed by the LEDs, hold the “T1S MODE” button for 3 seconds.
SQI is a 3-bit value reported by the PHY that correlates
with the BER (Bit Error Ratio) of the link communication. The behavior of the
SQI LED is shown below.
The PLCA status is reported by the 10BASE-T1S PHY and
displayed below the T1S Mode button according to the following table.
Green
Beacon Present
Red
Collision
Yellow
Jabber Detected
Magenta
Unexpected Beacon
Blue
Empty Cycle
Note:
The settings described in this section can also be modified using neoVI Explorer or Intrepid’s
open source cross-platform device communication API. (explained later in this guide)
You may see all the LEDs on the top label flashing synchronously.
This means the device is in bootloader mode, which should only happen when flashing the device’s firmware.
If this is observed unexpectedly or following a firmware update, please contact customer support for assistance.
The device can be powered using a DC supply between 6-40V volts with a minimum power of 10 Watts.
Using a power supply that does not meet these requirements may cause the device to
malfunction or be permanently damaged.
This serves as a connection to a host computer for configuration, firmware updates, and PHY register access.
The RAD-Comet can also be powered through this connection, provided the host port meets USB 3
power. (RAD-Comet2 cannot be powered using the USB connection)
The industry standard RJ-45 Ethernet jack is a 10/100/1000BASE-T port that can be used to
connect to a host computer or be used as a network port for sending and
receiving Ethernet traffic.
Link LED (Green): Indicates that a valid link has been established between your device and another 10/100/1000 Ethernet device.
Activity LED (Orange): Flashes when traffic passes in either direction over the attached Ethernet cable.
In normal operation you should see the Link LED always on, and the Activity LED flashing at a variable rate, with faster flashing meaning that more data is being transferred.
The mini-50 connector on the left is a 100BASE-T1 port with the following
pin assignments. Looking into the connector, the leftmost pin is Pin #1
with pin indexing increasing from left to right.
The mini-50 connector on the right is a 10BASE-T1S port with the following
pin assignments. Looking into the connector, the leftmost pin is Pin #1
with pin indexing increasing from left to right.
The IX connector in the middle contains two 10BASE-T1S Ports with the following pin assignments.
Note that each port has twisted pair designated “IN” and a twisted pair designated “OUT”.
The redundant signals are tied together electrically inside the RAD-Comet and can
be useful to minimize stub length by inserting the RAD-Comet2 into a mixing segment
such that the connection a daisy-chain “IN” and “OUT” of the RAD-Comet2.
The DB-9 connector on the right holds two CAN FD channels and can also be used to power the RAD-Comet.
Pin assignments are listed in the table below. See this section for
detail on power supply requirements.
The RAD-Comet2 also features a LIN port in this connector.
