4220A RUBIDIUM FREQUENCY STANDARD

The ptf 4220A is an Ultra Low Noise Disciplined Frequency Standard with rubidium and OCXO clean-up oscillator.
The instrument contains a high performance rubidium module, with an extended life design, and very low aging rate, with high quality OCXO o/p for low phase noise.
For even better long term stability the unit will accept a 1PPS input that can be derived from a reference such as caesium or GPS.
An ideal laboratory or system frequency reference, which includes a range of options that are available to enhance the functionality of the unit.

• 10MHz Rubidium Frequency Reference
• 100kHz Capability (with MOPS option)
• 1PPS Disciplining Input (standard)
• Ultra Low Phase Noise (-128dBc at 10Hz)
• RS 232 Monitor/Control
• Convenient 2U bench or 19″ rack mount

Outputs 10MHz @ +7dBm(RF sinewave)
  1PPS TTL Level
  1,5 &10 MHz @ +13dBm(1Vrms)sinewave

Stability  
Short-term:  
1s 2E-11
10s 1E-11
100s 2E-12

Aging <5 E-11/month (after 30 days)
  <5 E-10/year
Accuracy 5E-11 (at shipment)

Phase Noise at 10MHz  
Offset from carrier Phase Noise (dBc)
1 Hz -108
10 Hz -128
100 Hz -150
1000 Hz -170
10000 Hz -170
Spurious -75 dBc (100kHz bw)
Phase Noise at 10MHz  
AC Input (±15%) 120 or 230 VAC, <10W
DC Input (optional) 20 to 70 VDC, 10W

Dimensions  
(HxWxD) 2U x 19” x 16”

Configuration Options  
Option # Description
PPSI External 1 PPS
EXP4 4 ch. Expansion Module
RF01 1MHz Sinewave out (x4)
RF05 5MHz Sinewave out (x4)
RF10 10MHz Sinewave out (x4)
PULS Pulse Distribution (x4)
OCXO High Performance OCXO
ULNO Ultra Low Noise Output
FPOC Front Panel Outputs
DCPS DC Power Supply
RSLD Mounted Rackslides

4220A RUBIDIUM FREQUENCY STANDARD PDF DOCUMENT