Miniature, Ultra-Portable
High Precision & Performance
Atomic Frequency Source
Страница 1: ...Miniature Ultra Portable High Precision Performance Atomic Frequency Source...
Страница 2: ...3 C field 6 2 3 4 Telemetries 6 2 3 5 Frequency adjustment 7 3 The mRO 50 SPECIFICATIONS 7 4 mRO 50 installation and operation 7 4 1 Introduction 7 4 2 Safety 8 4 3 Environmental Responsibility 8 4 4...
Страница 3: ...ator VCXO which is locked to a highly stable atomic transition in the ground state of the 85Rb isotope While the frequency of the VCXO is at the convenient standard frequency of 10 MHz the rubidium cl...
Страница 4: ...The vapour cell is filled with metallic rubidium that contains both isotopes 85Rb 72 and 87Rb 28 In addition the cell is filled with a buffer gas which collides with rubidium atoms so as to keep them...
Страница 5: ...by a photodiode The basic purpose of the EP is to synchronize the entering microwave frequency derived from a temperature compensated crystal oscillator TCXO to this absorption dip It is achieved by t...
Страница 6: ...gnetic field allows fine tuning of the output frequency by shifting the rubidium resonance frequency by the second order Zeeman effect A stabilized current drives the coils The current is adjustable f...
Страница 7: ...art per billion i e 10 9 The microwave frequency at 3 036 GHz can be set in steps of 4 8 Hz by software see 4 8 4 The corresponding fractional resolution is 1 6 ppb 3 The mRO 50 SPECIFICATIONS The spe...
Страница 8: ...ce the RMA is approved we will contact you with shipment process details 4 4 Shipping and receiving information The mRO 50 is packaged and shipped in a foam lined box The unit is inspected mechanicall...
Страница 9: ...en to the operating location of the unit regardless of its application To minimize frequency offsets and or non harmonic distortion the unit should not be installed near equipment generating strong ma...
Страница 10: ...b absorption dip The built in serial interface allows an automatic parameter adjustment during the manufacturing process as well as a fine and coarse adjustment of the center frequency All the working...
Страница 11: ...gh value The light control loop is closed and the current will converge to the value which enables the lock The maximum driving current is 1 8 mAmp 0x1130 DDDD C field current setpoint a small current...
Страница 12: ...8 15 ln 10 5 RNTC 4100 273 14 DEC BBBB 4800 with X 1 T C I mAmp 4100 298 15 298 15 ln 10 5 RNTC 4100 273 15 1000 3 DEC CCCC 4800 3 510 I Amp 106 510 3 4800 DEC DDDD 4800 V Volt 3 DEC EEEE 4800 V Volt...
Страница 13: ...ER ready 0 NO 1 YES bit 12 Need update R1 and R5 0 NO 1 YES bit 13 not used bit 14 clock locked 0 NO 1 YES bit 15 auto start 0 DISABLE 1 ENABLE always in state 0 IMPORTANT NOTE Commands may not be tak...
Страница 14: ...b PIL _ cfield C XXXX CR change the value of C The parameter is used as long as the clock is running a reboot will load the initial value of C XXXX is a 16 bits not signed hexadecimal word settable fr...
Страница 15: ...Spectratime mRO 50 4 9 Lock monitor LED device may be directly connected to the lock monitor output according to Figure 8 Figure 8 electronic scheme for LED lock monitoring...
Страница 16: ...07 June 2020 Spectratime mRO 50 Manual Specifications subject to change or improvement without notice 2020 Orolia www orolia com sales orolia com...
