VCL-2145-LC
GPS Primary Reference Clock

GPS Receiver:

• 50 Channel GPS Receiver
• GPS L1 frequency, C/A Code Receiver
• Tracks up to 12 satellites simultaneously
• Synchronizing Time:
• Acquisition time - Hot Start: Less than 15 sec.
• Acquisition time - Warm Start: Less than 45 sec.
• Acquisition time - Cold Start: Less than 140 sec.
• GPS Signal:
• Tracking and Navigation: -162 dBm
• Reacquisition -160 dBm
• Cold Start -148 dBm
• Antenna Connector: TNC
• Accuracy Of Time-Pulse Signal referenced to GPS: +/-30ns (raw)
• Accuracy Of Time-Pulse Signal referenced to GPS: +/-15ns (compensated)
  (Note: with all satellites in view at -130db)
• Phase Accuracy: As per ITU-T G.8272

Clock performance - GPS

• ITU-T G.811

Frequency Accuracy:

• <1x10-11; (24 hour average)
• G.811 quality when locked to GPS

Internal (G.812) Synchronization Options:

• Rubidium
• OCXO (Oven-Controlled Crystal Oscillator)

Frequency Holdover

• Long-term stability: 1x10^-10/day, 2x10^-8/year
• Frequency stability: 6x10^-10(-50°C to +55°C)

System Access, Control and Management Options:

• Telnet, CLI
• CLI Control Interface (HyperTerminal or VT100)
• GUI (Graphical User Interface) - Runs on any PC operating on Windows XP, Windows 7, Windows 8 OS or Windows 10 OS.
• SNMP V2 Traps (MIB File provided)
• RS-232C
• USB
• 10/100BaseT Ethernet - RJ-45
• 2 x External Alarm Relay Contacts.

MTBF:

MTBF for VCL-2145-LC with RbXO Option:

• Per MIL-HDBK-217F: ≥ 17 years @ 40°C
• Per Telcordia SSR 332, Issue 1: ≥ 20 years @ 40°C

MTBF for VCL-2145-L C with OCXO Option:

• Per MIL-HDBK-217F: ≥ 21 years @ 40°C
• Per Telcordia SSR 332, Issue 1: ≥ 24 years @ 40°C

Redundant Power Supply Options:

• AC (100V AC to 240V AC, 50/60 Hz)
• DC (24V DC, 48V DC, 110V DC to 220V DC