GPS/GLONASS disciplined rubidium frequency standard model VCH-311 contains multi-channel GPS/GLONASS receiver, time scale comparison unit and automatically adjustable Rubidium reference oscillator. The instrument is intended to use as a high stable frequency signal source (STANDARD mode), or precision frequency calibrator … ► “GPS/GLONASS Disciplined Rb Oscillator VCH-311”

Frequency calibrator VCH-313 is intended for calibration and verification of different frequency signal sources, using precision time scale signal, transmitted by satellite navigation systems GPS/GLONASS.The instrument can provides periodical frequency correction of the calibrating frequency standard in automatic mode. … ► “Frequency Calibrator VCH-313”

Frequency comparator VCH-314 is intended for precise phase and frequency instability measurements. It contains two identical measuring channels (four input signals).Using cross-correlation technique in allows to obtain super-low measurement error and to calculate frequency instability of each single signal … ► “Precision Frequency Comparator VCH-314”

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”

Multichannel Frequency Comparator VCH-315M Multichannel frequency comparator VCH-315M is intended for precise phase and frequency instability measurements. It contains 8 identical measuring channels and performs synchronous high precision phase and frequency comparison of 5, 10 and 100 MHz signals, which … ► “Multichannel Frequency Comparator VCH-315M”

Phase comparator-analyzer VCH-325 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-325”