Overview
The GPS-DR-6 by Digital Instruments is a high-stability signal generator designed for generating Time and Frequency signals using two independent GPS radios. It features six independent outputs for both Time and Frequency, ensuring reliability through independent amplification and electrical insulation. The device constantly monitors signals from both GPS radios, excluding one in case of failure, thus ensuring security against signal interruptions. It is user-friendly, with all functions accessible via PC in both local and remote modes, and provides operational status through dry contacts.

Switch Unit Features
- Six independent BNC connectors at 10 MHz frequency with 13 dBm power level.
- Six independent PPS connectors with TTL level terminated at 50 Ohm.
- Seven dry contacts for electrical signaling.
- Four photo-coupled inputs for remote management.
- RS232 serial connection and Ethernet 10/100 network connection with TCP/IP protocol.
- Integrated web server for browser management.
- Dual power supply with logical OR configuration.
- AC power range: 85 Vac - 265 Vac, 50/60 Hz.
- 19’’ rack mountable, 1U height.

Generator Module Features
- 12-channel GPS receiver with automatic tracking and timing error management.
- Removable drawer container (120x220 mm).

Technical Specifications
Frequency Reference:
- Signal: 10 MHz sine wave.
- Spectral purity: -70 dBc (harmonics), -75 dBc (non-harmonics).
- Phase noise: -130 dBc at 1 kHz.
- Six independent outputs with 13 dBm each.
- Output impedance: 50 Ohm, BNC connectors.
- Stability: 1e-12 daily average OCXO locked at GPS.

Time Reference:
- Signal: 1 PPS, 100 µs Duty, Rising Edge.
- Six independent outputs, TTL 5 Vpp, Square wave.
- Output impedance: 50 Ω, BNC connectors.

GPS Section:
- 12 Channels L1 1575.42 MHz receiver.
- Tracks up to 12 satellites.
- PPS precision: < 50 ns.
- Antenna connector: TNC.
- Capture time: < 4 min.

PTP Section:
- Protocol: IEEE1588-2008 (PTPv2).
- Role: Grandmaster Clock Source or slave.

Supply:
- Network: 85 Vac – 265 Vac, IEC320 plug, EMI/RFI filter.
- Battery: Two independent power suppliers.

Signaling:
- RS-232 connection, DB9 Male ± 15 kV (ESD).
- Ethernet interface 10/100, TCP/IP protocol.
- Seven dry contacts over Weidmuller connector.
- Four photo-coupled contacts for remote management.

Size:
- Width: 1U 19'' rack.
- Depth: 300 mm (excluding connectors).
- Weight: 1.5 Kg.