Vremya-Ch| Products

ENG

Print version

Phase Comparator-Analyzer VCH-323^new

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°С to +40°С.
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.