RUBIDIUM REFERENCE OSCILLATORS AND RUBIDIUM FREQUENCY STANDARDS,
MEASURING EQUIPMENT, DEVELOPMENT AND PRODUCTION
High-Reliable Rubidium Reference Oscillators and Rubidium Frequency Standards
Rubidium Reference Oscillator RRS-002
 

High-reliable Rubidium Reference Oscillator RRS - 002 is a source of high-stable 10 MHz signal in broadcast, telecom, navigation and measuring equipment.

There are two Rubidium Frequency Standards installed into RRS-002. One Rubidium is in active mode, another is in “cold” reserve.

The Unit supplies 15 independent 10 MHz outputs or output frequencies 1.0; 5.0; 10.24; 13.0; 100.0; 2.048 MHz in 3 independent outputs of every frequency or (and) impulse 1 Hz outputs.

High reliability is due to reservation of all the Instrument's systems. In case of active Rubidium failure the reserved Rubidium starts automatically. The manual switch on is possible also. The output signal is not interrupted in that case due to special technical decisions applied.

The main distinctive properties are:

  • 15 high-stable 10 MHz outputs;
  • Diagnostic system installed;
  • Digital control through serial RS-485;
  • High reliability;
  • Life time – 10 years.

 

 

Technical Data:

Specification

Value

1. Output frequency, MHz

10

2. Output level

sinewave
1.0 ± 0.2 Vrms, 50 Ohms

3. Relative frequency offset at production

± 2.0.10-11

4. Relative frequency retrace
(in stable temperature, gravity, pressure and magnetic field conditions)

2.10-11
(within 1 h after 24 h off)

5 . Frequency drift

< ± 1.2.10-11/month

6 . Allan variance

1,4.10-11 /1 s
5.10-12 /10 s
3.10-12/100 s

7. Frequency change within temperature operating range

< ± 1.10-10
over 0 to + 45 C°

8. Analog frequency adjustment (DC voltage of 0 to 5 V)

not less than ± 2.10-9

9 . Harmonics

< -30 dBc

10 . Phase Noise

90 dBc/Hz at 10 Hz
130 dBc/Hz at 100 Hz
140 dBc/Hz at 1000 Hz
150 dBc/Hz at 10000 Hz

11. Warm-up time for 1 . 10 -9 frequency delay @+25° C, minutes
15.0