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 etalone 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: ±5.0x10–9.
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 | ≤1.5x10–13 |
10 s | ≤2.0x10–14 |
100 s | ≤3.0x10–15 |
1000 s | ≤5.0x10–16 |
3600 s | ≤5.0x10–16 |
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 °С to +40 °С.
Interface: RS-232; USB.
Power: 220 V, 50 Hz.
Power consumption: ≤60 V⋅A.
Dimensions (WxHxD):483x133x312 mm.
Weight: 8 kg.
Warranty: 3 years.
Live time:15 years.