product

Passive Hydrogen Maser VCH-1008 new (in development)

  • Product
  • Hydrogen Masers
  • Passive Hydrogen Maser VCH-1008 new (in development)

VCH-1008 Passive Hydrogen Maser is a small size hydrogen maser with the best frequency stability. Extremely high frequency stability is provided by state-of-the-art technology. Full digital processing of modulation and servo loop signals is realized. Ideal for high-accuracy measurements applications. Internal GPS/GLONASS calibrator (option) supports permanent automatic output signals frequency calibration.

Key Applications National Time Keeping Service; Space tracking and navigation; Verification of metrological parameters of frequency signals sources; Scientific researches.

Specifications

Output signals

Sine:5 MHz; 10 MHz; 100 MHz, (1 ± 0.2) V RMS into 50 Ω load. Pulse: 2,048 MHz (square pulse), (1,5 ÷ 2,8) V (pp) into 75 Ω (ITU-T G.703 part13). 1Hz; 1/60 Hz, positive polarity pulse, width (10 ± 0.1) μs, TTL level into 50 Ω, rise time: < 10 ns.

Metrological characteristics are given in the table:

Relative frequency accuracy

±3×10e-13
(factory calibration)

≤±1×10e-13
(in option with GPS/GLONASS calibrator)

Output signals frequency corrector

resolution

1×10e-15

retuning range

1×10e-10

Frequency stability
(Allan deviation at (25±1)C°, environmental effects are excluded)

1 s

≤5.0×10e-13

10 s

≤2.0×10e-13

100 s

≤5.0×10e-14

1 hour

≤9.0×10e-15

1 day

≤4.0×10e-15

Phase noise spectral density
(dBc/Hz)
(5 MHz output)

Frequency offset

Spectral density

1 Hz

≤−105

10 Hz

≤−130

100 Hz

≤−145

1000 Hz

≤−155

Manual synchronization to external 1 pps TTL signal

≤±25 ns

Time synchronization to UTC using GPS

≤±50 ns(in option with GPS calibrator)

Temperature sensitivity in operating temperature range (+5÷+35)C°

≤±2×10e-14 1/C°

Magnetic sensitivity

≤±2×10e-14 1/Oersted

Digital control and monitoring all operating parameters on LCD display or remotely.

Interface: RS-232C; USB; LAN.

Power: AC, 100–240 V, 50-60 Hz, or DC, (22~30) V.

Power consumption: 120 VA AC, 100 W DC.

Options: 1. DC power supply - (38, 4 – 57, 6) V (two inputs); 2. Internal battery for 4 hours autonomous operation; 3. Internal GPS calibrator for automatic output signals frequency calibration.

Dimensions (WxHxD): 470 mm×200 mm×530 mm.

Weight: 33 kg.

Warranty: 3 years.

Life time: 15 years.