The Spirent GSS4300 is a GPS simulator that generates accurate, repeatable GPS signals for testing receivers and navigation systems across development and manufacturing environments. This 3U rack-mount instrument enables performance evaluation under controlled conditions and supports E-OTD location simulation. The product line is now part of VIAVI Solutions.
Technical Specifications
Power
• Input: 100–240 Vac ±10%, 50–60 Hz ±3 Hz
• Consumption: <100 W
• Dual power supplies recommended for operational reliability
Reference Outputs
• 10 MHz sine-wave frequency output at 1 Vrms into 50 Ω
• Output impedance: approximately 50 Ω
• 1 pps output derived from internal Rubidium oscillator
• 1 pps logic levels: TTL into 50 Ω
Environmental
• Operating temperature: 0–40 °C
• Storage temperature: 0–50 °C
• Humidity: up to 90% non-condensing
Physical
• 3U 19" rack-mount chassis
• Depth: 17.3" (439 mm)
• Maximum weight: 8.4 kg
– Key Features
• Internal Rubidium oscillator for stable timing references
• Low power consumption suitable for continuous operation
• TTL and sine-wave reference outputs for diverse receiver interfaces
• Compact form factor optimized for lab and field deployments
– Typical Applications
• GPS receiver functional and performance validation
• Navigation system simulation and testing
• E-OTD location service verification
• Autonomous vehicle positioning evaluation
• Defense systems positioning assurance
– Compatibility & Integration
The GSS4300 supports remote control and ATE integration via standard interfaces. SimGEN software provides control capabilities over GNSS simulator operation.
