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Multichannel Frequency Comparator VCH-315

Frequency comparator VCH-315 is intended for precise phase and frequency instability measurements. It contains eight identical measuring channels and performs high precision phase and frequency comparison.

Key applications
- verification of metrological parameters of precision frequency signals sources;
- time and frequency etalon systems;
- computed control measustem;
- scientific research measurements.

Specifications

Input signals: 5 or 10 or 100 MHz nominal frequency, (0.8÷1.2) V into 50 Ω load.
Input impedance: 50 Ω.
Noise passband: 10 Hz.
Maximal measured relative frequency difference: 5.0×109.
Averaging time range: from 1 s up to 106 s.

Metrological characteristics are given in the table:
Main measurement error (Frequency
instability, inserted by noises of
measurement channels)
Averaging time,
(τ)
Allan deviation
noise floor
1 s ≤1.5×1013
10 s ≤2.0×1014
100 s ≤3.0×1015
1000 s ≤5.0×1016
3600 s ≤5.0×1016


Interface: RS-232; USB.
Application software
- runs under Microsoft Windows 2000,XP, Vista, 7;
- calculates phase changing and frequency difference for each signals pair, two-samples Allan deviation, N-samples Allan deviation;
- represents measurement results as tables and plots, stores information in files.
Operating temperature range: +5 to +40 .
Interface: RS-232; USB.
Power: 220 V, 50 Hz.
Power consumption: ≤40 V⋅A.
Dimensions (W×H×D): 483×133×312 mm.
Weight: 8 kg.
Warranty: 3 years.
Live time: 15 years.

Download manual


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