EQ Gateway
The EQ Gateway is a computer running EQ Watch and EQ Sight — continuous power quality data collection with built-in visualization and analysis. It connects to EQ Wave sensors via a dedicated Ethernet subnet, records CPOW and power monitoring (PMon) data to local storage, and serves the data through REST and WebSocket APIs.
Hardware Requirements
- Minimum 4 GB RAM
- Minimum 4 GB free space on root filesystem
- Two Ethernet ports (one for sensor subnet, one for facility LAN)
- Debian-based Linux OS (Debian, Ubuntu, etc.)
- Removable storage media for CPOW data (approximately 50 GB/day for a typical 3-phase deployment). Storage media must be rated for sustained high-volume writes. Do not write CPOW data to the root filesystem; use dedicated removable media. See Storage Media for endurance guidance, capacity planning, and setup.
The gateway also requires an EQ Wave sensor with media converter to collect data. These are included with the EQ Wave package; see EQ Wave Installation for details.
Network Architecture
The gateway has two Ethernet ports: one connects to your facility LAN, and the other connects to the EQ Wave sensor subnet via a media converter. The media converter bridges between Cat 5e Ethernet (100Base-TX) and plastic optical fiber (100Base-FX), providing complete electrical isolation between the sensor and gateway.
Sensor Network
- EQ Wave sensor: 192.168.10.10 (fixed IP)
- Gateway sensor interface: 192.168.10.2 (fixed IP)
- Subnet mask: 255.255.255.0
- Isolation: No routing to facility network (fiber optic isolation maintained)
Facility Network
- Gateway LAN interface: DHCP or static IP (configurable via LAN Configuration)
- EQ Watch web interface: HTTP on port 80 (proxied to backend on port 8080)
- EQ Watch REST API: Port 8080 (see API Reference)
System connection diagram
Example system setup
Power Supply
Each device in the system (gateway, media converter, EQ Wave sensor) requires exactly one power source. Do not connect multiple power sources to the same device.
EQ Wave sensor: Self-powered from the monitored AC mains (85–528V) or DC input (5–36V on v1.2).
Media converter (use one):
- USB power from the gateway
- Dedicated DC adapter
Gateway power options vary by hardware. See your platform-specific page for details.
Software
All gateways run the same EQ Watch software stack regardless of hardware platform. Capabilities include:
- REST API: HTTP-based data access (JSON and Arrow IPC formats)
- WebSocket: Live waveform and spectral streaming
- Additional protocols: Modbus TCP, MQTT, DNP3 available upon request
- Remote Support: VPN tunnel for authorized technical support (enabled by default, can be disabled)
- Network Isolation: Sensor network is physically isolated from facility LAN via fiber optic connection
Supported Platforms
| Lab Gateway | Industrial Gateway (Compulab) | Industrial Gateway (Toradex Ivy) | |
|---|---|---|---|
| Temperature range | 0°C to 50°C | -40°C to +80°C | -40°C to +85°C |
| Ethernet ports | 1 built-in + USB adapter | Dual built-in Gigabit | Dual built-in Gigabit |
| Industrial certifications | No | CE, UL | CE, FCC (pending) |
| Boot media | NVMe SSD | eMMC (internal) | eMMC (internal) |
| Data storage | NVMe SSD | microSD via USB adapter | microSD (direct slot) |
- Compulab IOT-GATE / IOT-DIN — Current production industrial gateway
- Toradex Verdin iMX95 + Ivy — Next-generation production gateway (available Q2 2026)
- Raspberry Pi 5 (Lab Gateway) — Lab, workbench, demonstrations, and smaller deployments