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”

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

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”

Pulse distribution unit is designed for distribution of high quality TTL pulse signals. The unit has 16 independent outputs for 50 Ohm loads. RS-232 interface allows selecting of trigger level and monitoring status information.

Key applications:
-time and frequency high … ► “Pulse Distribution Unit VCH-606”