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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 105 s.
Phase noise spectrum measurement range: 0.1 Hz to 100 kHz.
Allan deviation noise floor, not more:
|
Allan deviation |
Averaging time |
Passband |
"Three inputs" mode for the input signal pairs (YX, ZX) |
"Two inputs" mode for the input signal pair YX. "Three inputs" mode for the input signal X |
Specification |
Typical |
Specification |
Typical |
0.01 s |
100 Hz |
5.0·10−12 |
2.5·10−12 |
3.0·10−13 |
3.0·10−14 |
0.1 s |
10 Hz |
6.0·10−13 |
2.5·10−13 |
1.0·10−13 |
9.0·10−15 |
1 s |
1 Hz |
3.0·10−14 |
9.0·10−15 |
1.0·10−14 |
1.0·10−15 |
10 s |
1 Hz |
5.0·10−15 |
1.5·10−15 |
2.0·10−15 |
1.5·10−16 |
100 s |
1 Hz |
2.0·10−15 |
5.5·10−16 |
1.0·10−15 |
8.0·10−17 |
1 hour |
1 Hz |
5.0·10−16 |
8.0·10−17 |
3.0·10−16 |
9.0·10−17 |
1 day |
1 Hz |
1.0·10−16 |
5.0·10−17 |
1.0·10−16 |
7.0·10−18 |
Phase Noise floor, not more
Frequency offset |
Phase Noise L(f), dBc/Hz "Three inputs" mode for the input signal pairs (YX, ZX) |
Specification |
Typical |
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 |
−141 |
−138 |
−119 |
10 Hz |
−143 |
−135 |
−115 |
−145 |
−146 |
−128 |
100 Hz |
−145 |
−143 |
−127 |
−147 |
−147 |
−133 |
1 kHz |
−146 |
−145 |
−133 |
−148 |
−148 |
−134 |
10 kHz |
−147 |
−145 |
−135 |
−148 |
−149 |
−138 |
100 kHz |
−148 |
−146 |
−140 |
−148 |
−150 |
−143 |
Frequency offset |
Phase Noise L(f), dBc/Hz "Two inputs" mode the input signal pair YX. "Three inputs" mode for the input signal (X) |
Specification |
Typical |
Frequency of input signals |
Frequency of input signals |
5 MHz |
10 MHz |
100 MHz |
5 MHz |
10 MHz |
100 MHz |
1 Hz |
−135 |
−130 |
−110 |
−148 |
−144 |
−128 |
10 Hz |
−150 |
−145 |
−127 |
−160 |
−156 |
−142 |
100 Hz |
−155 |
−153 |
−140 |
−168 |
−165 |
−152 |
1 kHz |
−160 |
−158 |
−143 |
−172 |
−170 |
−157 |
10 kHz |
−163 |
−160 |
−150 |
−175 |
−172 |
−164 |
100 kHz |
−163 |
−160 |
−155 |
−176 |
−173 |
−168 |
Interfaces: LAN.
Software: calculates relative frequency difference, Allan deviation, phase noise spectrum.
Temperature in use: +5°Ñ to +40°Ñ.
Power supply: AC(198÷242)V, DC(50÷60)V.
Power consumption: not more 60 V·A.
Size (H×W×D): 184×449×339 mm.
Weight: not more 12 kg.
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