The VCH-103 is a high-performance hydrogen maser with low phase noise output signals. Extremely high frequency stability is provided by state-of-the-art technology and internal stand-alone Cavity Auto Tuning system.

Key Applications
– National Time Keeping Service;
– Deep space tracking … ► “Active Hydrogen Maser VCH-103”

Primary reference clock (PRC) is intented for use as the redundant first class SDH synchronization equipment of digital networks telecommunication. PRC VCH-001 meets all requirements of ITU-T G.811.
VCH-001 is based on a Passive Hydrogen Maser having relative frequency accuracy … ► “Primary Reference Clock VCH-001”

Key Applications
– national Time Keeping Service;
– deep space tracking … ► “Active Hydrogen Frequency Standard VCH-1005”

Secondary master oscillator model VCH-002 is intended for use as slave node clock in SDH networks. In normal operation it is operating as a slave clock, traceable to a primary reference clock. For purposes of redundancy it has multiple reference … ► “Secondary Master Oscillator VCH-002”

Key applications:
– National Time Keeping Service;
– deep space tracking and … ► “Active Hydrogen Frequency Standard VCH-1003A”

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 … ► “Multichannel Frequency Comparator VCH-315”

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… ► “Phase Comparator-Analyzer VCH-323”

High-Frequency Switch VCH-604 is designed for switching high-frequency (1−100 MHz) and pulse TTL signals. VCH-604 contains two groups of channels; each group has 25 (or 2 optional) inputs and 2 outputs. VCH-604 can be controlled from PC via GPIB and … ► “High-Frequency Switch VCH-604”

Frequency distribution amplifier is designed for ultra-low-noise distribution of sinusoidal signals 1–100 MHz with unity gain. It allows checking for signals availability via RS-232 interface. The basic model has 3 inputs / 12 outputs (3 modules 1 / 4). For … ► “Frequency Distribution Amplifier VCH-605”