Interceptor PoE Board on exaviz encyclopedia

Getting Started

Mon, 01 Jan 0001 00:00:00 +0000

This guide walks you through installing the Interceptor PoE Board and configuring it for use with your Interceptor Carrier Board.

What You’ll Need

Interceptor PoE Board
Interceptor Carrier Board (already set up)
40-pin FFC cable (included with PoE board)
VOITA 48Vdc Power Converter
ATX PSU with adequate 12V capacity

Pre-Installation Checklist

Before starting:

Carrier board is working correctly
OS is updated to 2025-05-01 or newer
PSU has sufficient 12V capacity (see power requirements)
System is completely powered off (not just shut down - PSU switch off or unplugged)
48V power is NOT connected yet - connect only after FFC cable is installed

Step 1: Connect the FFC Cable

The PoE board connects to the carrier board via a 40-pin Flat Flexible Cable (FFC).

Specifications

Mon, 01 Jan 0001 00:00:00 +0000

Physical Specifications

Parameter	Value
Dimensions	100mm x 68mm
Mounting	Standoffs (compatible with standard spacing)

Environmental Specifications

Parameter	Value
Storage Temperature	-40°C to +85°C
Operating Temperature	0°C to +70°C
Humidity	10% to 90% (non-condensing)

PoE Specifications

Parameter	Value
PoE Standard	IEEE 802.3at (PoE+)
Ports	8x RJ-45
Power per Port	Up to 30W
Total Power Budget	240W maximum (30W × 8)
Voltage	48V DC nominal
Detection	Automatic PoE device detection
Classification	IEEE 802.3at Class 0-4

Network Specifications

Parameter	Value
Speed	10/100 Mbps
Connector Type	RJ-45 (magnetics separate from connector)
Cable Support	Cat5e or Cat6, 8-wire (all 4 pairs required)
Max Cable Length	100m (per IEEE 802.3), verified to 300ft (91m)

Note

The PoE ports operate at 100 Mbps (Fast Ethernet). For Gigabit connectivity, use the carrier board’s 4-port Gigabit switch (J8).

Hardware Interface

Mon, 01 Jan 0001 00:00:00 +0000

Board Layout

Connector Reference:

J6 - Eight port RJ-45 switch
U13, U14 - Ethernet magnetics
J2 - FFC (40 pos) connection to carrier board
J1 - PoE power input (48V DC)
H1, H2, H3 - Mounting holes

Connectors

J1 - Power Input (Terminal Block)

48V DC power input from VOITA converter.

Terminal	Signal
+	+48V DC
-	Ground (GND)

Warning

Ensure correct polarity when connecting the VOITA converter. Reverse polarity may damage the board.

PoE Control

Mon, 01 Jan 0001 00:00:00 +0000

The Interceptor PoE Board is managed through the /proc/pse interface, which provides control over individual PoE ports.

Requirement

The /proc/pse interface requires Exaviz OS image dated:

2025-05-01 or newer for Raspberry Pi CM4/CM5
2025-04-30 or newer for Banana Pi CM4

The /proc/pse Interface

The PoE ports are controlled via a simple text-based interface at /proc/pse.

Checking Port Status

cat /proc/pse

Note

The /proc/pse interface is a streaming interface. Reading it with cat will continuously output status updates. Use Ctrl+C to stop, or capture a single snapshot with head:

Troubleshooting

Mon, 01 Jan 0001 00:00:00 +0000

This guide covers common issues with the Interceptor PoE Board and their solutions.

Detection Issues

PoE board not detected (/proc/pse missing)

Symptoms: The /proc/pse file doesn’t exist. Commands fail with “No such device” error.

Important

The /proc/pse interface requires Exaviz OS - it is not available in standard Raspberry Pi OS or other distributions. The IP808AR driver is Exaviz-specific and not included in mainline kernels.

Solutions:

Check OS version - Requires Exaviz OS 2025-05-01 or newer:

FAQ

Mon, 01 Jan 0001 00:00:00 +0000

General Questions

How many PoE ports can I have?

Single board: 8 ports
Dual boards: 16 ports (maximum supported by the Interceptor Carrier Board)

Each PoE board provides 8 ports. The carrier board has two FFC connectors (J9 and J10) for connecting up to two PoE boards.

What PoE standard is supported?

The Interceptor PoE Board supports IEEE 802.3at (PoE+), which provides up to 30W per port. It is also backward compatible with IEEE 802.3af (PoE) devices.