Print version Print version 

Multichannel Frequency Comparator VCH-315Mnew

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 allows using cross-correlation methods for instability estimation. Each channel includes two inputs for measured signals (fx and fy).
Key applications

- verification of metrological parameters of precision frequency signals sources;
- time and frequency etalon systems;
- computed control measurement systems;
- scientific research measurements;

Device control, collecting and display of measurement results are carried out by computer using RS-232, USB or LAN interfaces.

Specifications

Input signals: 5, 10 or 100 MHz nominal frequency, (0.8−1.2) V into (501) Ohm load.
Maximal measured relative frequency difference: 5.0×109
Noise passband: 3 Hz.

Frequency instability, introduced by multichannel frequency comparator VCH-315m (at zero frequency difference between input signals, and on condition of temperature changing not more than 1,0 per hour within the operating temperature range), is displayed in the table:

Averaging interval Frequency instability, noise floor by Multichannel frequency
comparator VCH-315m
1 channel mode (ADEV) 2 channel mode (cross-ADEV)
1 s ≤6.0×1014 ≤2.0×1014
10 s ≤2.0×1014 ≤3.0×1015
100 s ≤3.0×1015 ≤1.0×1015
1 h and more ≤3.0×1016 ≤2.0×1016

Power: AC (22022) V, (502) Hz, or DC (22−30) V.

Power consumption is not more than 40 VA (for AC) and not more than 35 W (for DC)
Weight is not more than 12 kg.
Dimensions (W×H×D): 133.0×483.0×325.0 mm.


Download manual

Instruments for Space Applications
 
 
Active Hydrogen Masers
 
 
Passive Hydrogen Masers
 
 
Frequency comparators
 
 
Output Signal Generators and Distributors
 
 
Atomic Clock Ensemble Etalons
 
 
Telecommunication Networks Synchronization Equipment
 
 
"VREMYA-CH" JSC, Russia
Instruments for
Space Applications
 
 
Active
Hydrogen Masers
 
 
Passive
Hydrogen Masers
 
 
Frequency
comparators
 
 
Output Signal Generators
and Distributors
 
 
Atomic Clock
Ensemble Etalons
 
 
Telecommunication Networks
Synchronization Equipment
 
 
Documentation
Active
Hydrogen Masers
 
 
Passive
Hydrogen Masers
 
 
Documentation
Frequency
comparators
 
 
Output Signal
Generators
and Distributors
 
 
Software