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수소 메이저, 수소 시계 > Active Hydrogen Maser VCH-1003M |
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| Active Hydrogen Maser VCH-1003M |
| The VCH-1003M is a state-of-the-art, high-performance maser with low phase noise option. It utilizes the latest maser technologies, including Stand-alone Auto Cavity Tuning (no external reference required), remote IP control, monitoring and self-diagnostics. |
Key Applications
- National Time Keeping Service;
- Deep space tracking and navigation
- VLBI
- GNSS satellite monitoring
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| Specifications |
Output signals
- Sine: two outputs 5 MHz (sine), 1 ± 0.2 V RMS into 50 Ohms,
- two outputs 10 MHz (sine), 1 ± 0.2 V RMS into 50 Ohms,
- two outputs 100 MHz (sine), 1 ± 0.2 V RMS into 50 Ohms,
- one output 1400 MHz (option)
- Pulse: two outputs 1 Hz (pps); Amplitude: > 2.5 V into 50 Ohm ; Width: 10-20 μs ; Rise time: <3 ns
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Standard |
Option L |
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3 Hz |
3 Hz |
0.5 Hz |
| Frequency stability (Allan deviation) |
1 s |
≤1.5×10e-13 |
8.0×10e-14 |
6.0×10e-14 |
| 10 s |
≤2.5×10e-14 |
1.4×10e-14 |
1.3×10e-14 |
| 100 s |
≤6×10e-15 |
4.0×10e-14 |
3.6×10e-14 |
1000 s* |
≤2×10e-15 |
1.5×10e-15 |
1.3×10e-15 |
3600 s* |
≤ 1.5×10e-15 |
1.5×10e-15 |
1.0×10e-15 |
1 day* |
≤7×10e-15 |
5.0×10e-16 |
5.0×10e-16 |
| Long term: ** |
<3.0e-16 per day |
Synthesized Frequency Resolution
Frequency control range |
1×10e-16
1×10e-10 |
Harmonic distortion:
Non-harmonic distortion: |
< 30 dB (for 5 MHz output)
< -100 dB in the range from 10 Hz to 10 kHz |
| Temperature sensitivity |
≤ 2×10e-15 / C° |
| Magnetic sensitivity |
≤ 1×10e-14 / Gauss |
| Phase noise (dBc/Hz) |
offset |
standard |
Option L |
| 1 Hz |
-118 |
-130 |
| 10 Hz |
-135 |
-142 |
| 100 Hz |
-149 |
-152 |
| 1000 Hz |
-156 |
-156 |
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* Specified only under laboratory conditions: at ±1 °C ambient temperature change in 10-35 °C operating temperature range.
** Achieved after extended period of unperturbed, continuous operation. |
Manual synchronization to external 1 pps TTL signal with 50 ns accuracy.
Operating temperature range: +5 C° to +35 C°
Power: 85 to 264V, 50 Hz; 22-30V dc
Power consumption: 150 VA ac, 100 W dc
Dimensions (WxHxD): 550 mm × 990 mm × 550 mm
Weight: 105 kg
Full data monitoring and functions control (local or remote through any network) performs by personal computer
Application software runs under Microsoft WindowsTM
Lifetime: 15 years |
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