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Phase Comparator-Analyzer VCH-323new

Phase 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 to +40.
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.

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"VREMYA-CH" JSC, Russia
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