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Current location:Home > Product > Rubidium oscillator > Symmetricom X72 rubidium oscillator
Symmetricom X72 rubidium oscillator

Symmetricom X72 rubidium oscillator

X72 rubidium atomic clock is a high-performance rubidium atomic oscillator produced by American symmetricom company. It is characterized by supporting external 1PPS domestication, and can be connected with external GPS receiver or other time reference signals to output high-precision frequency reference signals. When the GPS signal is invalid, rely on the excellent punctuality performance of X72 to continue to provide high-precision time and frequency reference signal performance.
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X72 is suitable for providing high-precision time benchmark for GSM, CDMA and other mobile communication base stations, SONET / SDH Networks, time unified systems, test equipment and other systems.



Frequency output
Output 1 Output 2 Output 3 Output 4
Derived sine Master XO* Derived square wave* 1pps*
5,10,15MHz 60MHz 5,10,15MHz yes
13MHz 52MHz 13MHz yes
10.24MHz 61.44MHz 2.048MHz yes
10.29MHz 61.76MHz 1.544MHz yes
*: number

Note:the x72 provide 4 outputs.Typical factory settings are shown abobe.Other standard teltcom frequencies are available.

All outputs are programmable to enabled or disabled.

Sinusoidal output (for 10MHz)
Power Supply 7.8dBm±10% into 50Ω
phase noise 1Hz <-72dBc/Hz
10Hz <-90dBc/Hz
100Hz <-128dBc/Hz
1kHz <-140dBc/Hz
10kHz <-148dBc/Hz
Spurious
harmonic <-60dBc
Non harmonic <-60dBc
Digital output 5V ACMOS
Instability <10ps RMS

stability

(Allan Deviation)

t=1sec <3x10 -11
t=10sec <1x10 -11
t=100sec <3x10 -12
Accuracy <&plusmn;5x10 -11 ( 25 ℃ )
Retrace <&plusmn;2x10 -11 (on-off-on:24h,48h,12h@ 25 ℃ )
Control range Digital input: &plusmn; 1x10 - 6 with granularity of 1x10 - 12
Analog input: &plusmn; 1.5x10 - 9, 0-5V inti 50K Ω
Hot start time
Lock time 5min (locking accuracy < 5x10 - 8)
< 1x10 - 9 time 7.5min
Support voltage 5VDC&plusmn;10% or 10 to 32V
heating 17W max( -40 ℃ - 85 ℃ )
work 15W@ -40 ℃ ,10W@ 25 ℃ ,5W@ 85 ℃
Voltage coefficient 04.95v-05.05v: absolute value (DF / F) < 3x10 - 11 PP
10.00v-32.00v: absolute value (DF / F) < 3x10 - 11 PP
Emissions / sensitivity Meet the requirements of CE and FCC when using coaxial cable
Test / status Self test (BIST)
Acmos - service / fault - out of lock
Serial:DSIP
reliability
Benign,ground MTBF:527,000hrs@ 40 ℃
Environmental indicators
working temperature -40 ℃ - 85 ℃
Magnetic field range sensitivity dc(&plusmn;2Gauss)<&plusmn;4x10 -11 /Gauss
humidity GR-CORE-63,<5 TO 90%,RH Non-condensing
Vibration
work GR-CORE-63, 4.5.2 /4,locked to 1.0g
Storage and transportation
temperature -55 ℃ - 100 ℃
Shock / vibration GR-CORE-63 4.4.1 to 1.5g
Physical index
weight 250g
size 89mmx76mmx 17.7mm
volume 124ml.
application
AP3 ageing temperature coefficient temperature range performance

day

month year
&plusmn;4x10 -11 &plusmn;3x10 -10 &plusmn;1x10 -9 <3x10 -9 over -40 ℃ to 85 ℃ -40 ℃ to 85 ℃ Meets GSM Specification,<5E-8


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