AR- 133A-03
Rubidium Frequency Standard
High Stability Under Vibraꢀon
AR-133A-03
Applications
Features
• Short-term-stability: <1.2E-11 @ 1s (typical, improved version)
• Phase noise: -159dBc/Hz floor (typical)
• Outputs: 10MHz and 1PPS
• Secure Communicaꢀon
• ELINT
• C41
• Input: 1PPS for discipling
• Supply voltage: 15 Vdc
• Steady-state power: <8W
• Size: 77 x 77 x 49.65 mm
• Vibraꢀon isolated
Description
The AR133A-03 is a ruggedized version of Rubidium Frequency Standard model AR133A which is designed for airborne applicaꢀons. A
vibraꢀon isolator included in the AR133A-03 enables the unit to maintain high frequency stability and accuracy in vibraꢀon environments
such as airborne plaꢂorms.
The unit features very fast warm-up and could be disciplined to an external 1PPS from GPS or other sources. It is one of the smallest, high
performance disciplined rubidium frequency standards available today. The AR133A is comprised of a unique DFLL (Digital Frequency Lock
Loop) where a high performance crystal oscillator is locked to the rubidium atomic line using an embedded microprocessor and a special
patented algorithm.
Performance SpecificaƟons
All specificaꢀons defined at 25°C, quiescent condiꢀons, ambient sea level and nominal supply voltage unless otherwise specified.
Input & Outputs
- 10MHz sine wave +12±2 dBm into 50Ω
1PPS, 3V TTL into 50Ω
Rise ꢀme < 10nSec
Pulse width <20μSec (in AR-133A-03-02 the pulse width is 400μSec
Outputs
1PPS IN
10MHz out
Input
1PPS TTL 50Ω
RS-232 control and monitor interface provides: ID, Status, frequency
adjustment.
Protocol: 9600, 1, 8, 1, no parity for details see soꢃware ICD
COM (Rx, Tx)
Power Supply
1PPS Out
Lock (BIT)
AR-133A
Monitor &
Control
Digital frequency adjustment: 7.6E-13 steps over > 5E-7 range
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Vectron Internaꢀonal • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • hꢁp://www.vectron.com
Rev 1.0 May 2015