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Phase Comparator-Analyzer VCH-323newPhase comparator-analyzer VCH-323 is intended for precise frequency instability and phase noise measurements (Allan deviation, L(f)).
Key applications:
- Metrological characteristics monitoring of the of precise signal sources, including crystal oscillators and quantum frequency standards;
- Scientific research measurements.
Specification:
The comparator has two identical measuring channels (three inputs) and uses correlation processing providing extremely low measurement error and the frequency instability calculation of each input signals.
Input signals: sinusoidal in frequency range from 1 up to 100 MHz (different frequencies at all inputs are allowed), level (0.6−1.2) Vrms, 50 Ohm load.
Noise bandwidth: 1, 10, 100, 1000 Hz.
Averaging time range: 0.001 s to 106 s.
Phase noise spectrum measurement range: 0.001 Hz to 100 kHz.
Allan deviation noise floor, not more:
|
Allan deviation |
Averaging time |
Passband |
For the input signal pairs (YX, ZX) |
For the input signal X |
0.01 s |
100 Hz |
3.0×10−12 |
3.0×10−13 |
0.1 s |
10 Hz |
3.0×10−13 |
7.0×10−14 |
1 s |
1 Hz |
2.0×10−14 |
7.0×10−15 |
10 s |
1 Hz |
3.0×10−15 |
1.0×10−15 |
100 s |
1 Hz |
7.0×10−16 |
2.0×10−16 |
1 hour |
1 Hz |
1.5×10−16 |
1.0×10−16 |
1 day |
1 Hz |
1.0×10−16 |
1.0×10−16 |
Phase Noise floor, not more
Frequency offset |
Phase Noise L(f), dBc/Hz |
For the input signal pairs (YX, ZX) |
For the input signal (X) |
Frequency of input signals |
Frequency of input signals |
5 MHz |
10 MHz |
100 MHz |
5 MHz |
10 MHz |
100 MHz |
1 Hz |
−130 |
−127 |
−107 |
−135 |
−130 |
−110 |
10 Hz |
−143 |
−135 |
−115 |
−150 |
−145 |
−127 |
100 Hz |
−145 |
−143 |
−127 |
−155 |
−153 |
−140 |
1 kHz |
−146 |
−145 |
−133 |
−160 |
−158 |
−143 |
10 kHz |
−147 |
−145 |
−135 |
−163 |
−160 |
−150 |
100 kHz |
−148 |
−146 |
−140 |
−163 |
−160 |
−155 |
Interfaces: LAN.
Software: calculates relative frequency difference, Allan deviation, phase noise spectrum.
Temperature in use: +5°Ñ to +40°Ñ.
Power: 220 V AC, (50 – 60) Hz.
Power consumption: not more 60 VA.
Size (H×W×D): 184×449×339 mm.
Weight: not more 12 kg.
Download manual

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