DSA-100E
eLoran Standalone Platform
The DSA-100E is a Standalone (SA) Platform designed for real-time recording and playback of eLoran signals. Built on a Linux-based embedded CPU with an FPGA-driven digital signal processing core, it captures eLoran waveforms with 16-bit resolution at 10 MHz sampling rate and stores them continuously for up to 12 hours on an internal 1TB SSD.
At its core, the DSA-100E features a 3-Stage Decimation and Interpolation filter architecture for efficient signal processing, along with an integrated oscilloscope analysis mode and GRI-based eLoran signal detection for real-time signal quality monitoring. The platform also incorporates GNSS-based time synchronization, enabling precise UTC-referenced signal capture and position data logging alongside eLoran recordings.
Designed with user convenience in mind, the DSA-100E features an 8.8-inch touch LCD display and dedicated GUI for intuitive control. With its compact form factor and comprehensive signal analysis capabilities, this instrument serves as an essential tool for eLoran system testing, monitoring, and research.
Function
Signal Recording & Playback
- Real-time eLoran signal recording and playback via Antenna or High Level input
- Waveform visualization with adjustable gain and attenuation settings
Oscilloscope & Signal Analysis
- Time-domain waveform visualization during recording and playback
- GRI-based eLoran signal detection and amplitude display per GRI Chain
GNSS Integration
- Real-time GNSS position data recording (.csv) synchronized with eLoran signal capture
- Playback of stored GNSS position data alongside eLoran signal replay
Input/Output Control
- Independent gain control for Antenna input (up to 30 dB), High Level input, and signal output
- External 10 MHz and 1PPS reference signal synchronization support
File Management
- Built-in file explorer supporting file selection, renaming, deletion, and USB file transfer
Specs
| Performance | |
| Frequency Range | 10 kHz – 500 kHz |
| Antenna Input Connector | Standard Circular Connector (E-Field Antenna only) |
| Antenna Input Power Range | −70 dBm to −40 dBm |
| High Level Input Connector / Impedance | BNC / 50 Ω |
| High Level Input Power Range | −10 dBm to +10 dBm |
| Output Connector / Impedance | BNC / 50 Ω |
| Output Power Range | 0 dBm or above |
| External Reference Signal | Sine Wave, 0 dBm ±3 dB / BNC / 50 Ω |
| ADC Sampling Rate / Resolution | 10 MHz / 16-bit |
| DAC Sampling Rate / Resolution | 10 MHz / 16-bit |
| Decimation / Interpolation Factor | ×8 (3-Stage) |
| Data Transfer Rate (CPU ↔ FPGA) | 2.5 Mbyte/s via SMI Interface |
| Storage Capacity | 1 TB NVMe SSD (≥ 12 hours continuous recording) |
| Display | 8.8-inch Touch LCD, 1920 × 480 resolution |
| Connectivity | Ethernet (RJ45), USB 2.0 Type-A (Front & Rear) |
| Input Voltage | 110 – 240 V AC, 50/60 Hz |
