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iSource+® StarLPRO-1500 Manual
th
11
August 2015
Low Cost & Low Profile Rubidium Oscillator (StarLPRO-1500)
High Precision & Performance
Telecom | Navigation | Broadcast | Defense | Instrument
©SpectraTime
sales@spectratime.com
spectratime.com
Rubidium Source
Applications
Europe Headquarters
+41.32.732.16.66
North America Sales Offices
+1.512.470.3980
An
Orolia Group
Business
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Table of Contents
Summary of Contents for spectratime iSource Plus StarLPRO-1500
- Page 1 StarLPRO-1500 Manual August 2015 Low Cost & Low Profile Rubidium Oscillator (StarLPRO-1500) High Precision & Performance Rubidium Source Telecom | Navigation | Broadcast | Defense | Instrument Applications ©SpectraTime Europe Headquarters North America Sales Offices sales@spectratime.com +41.32.732.16.66 +1.512.470.3980 spectratime.com...
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Page 2: Table Of Contents
SERIAL INTERFACE CONNECTION ....................12 4.6.3 Standard RS-232 control & Monitoring commands ................12 LOCK MONITOR and XTAL MONITOR OUTPUTS ................. 12 TTL OR CMOS LEVEL ‘LOCK MONITOR’ GENERATION..............13 4.7.1 ©SpectraTime Europe Headquarters North America Sales Offices Page 2 of 12 sales@spectratime.com +41.32.732.16.66 +1.512.470.3980... -
Page 3: Introduction
The pump light comes from a Rb resonance lamp which emits the light of Rb87 atoms. This light, which intersects the absorption cell, is filtered in such a way that mainly one optical frequency, which corresponds to a ©SpectraTime Europe Headquarters... - Page 4 1500 consists of three different packages. The optical elements, which include the Rb absorption cell and microwave cavity, form the atomic resonator, while the electronics package is constituted of the generator and the detection circuitry. ©SpectraTime Europe Headquarters North America Sales Offices Page 4 of 12 sales@spectratime.com...
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Page 5: Physics Package
The difference between i1 and i2 produces the error signal used for the quartz crystal center frequency adjustment until the mean value of f1 and f2 is exactly equal to the rubidium hyperfine frequency. ©SpectraTime Europe Headquarters North America Sales Offices Page 5 of 12 sales@spectratime.com... - Page 6 The Rb absorption cell is heated to ~85°C and also stabilized within 0.3°C over the full operating temperature range. The heating by a heater wire and the temperature control follows the same pattern as for the lamp heater. ©SpectraTime Europe Headquarters North America Sales Offices Page 6 of 12 sales@spectratime.com...
- Page 7 ® iSource StarLPRO-1500 Manual ©SpectraTime Europe Headquarters North America Sales Offices Page 7 of 12 sales@spectratime.com +41.32.732.16.66 +1.512.470.3980 spectratime.com Orolia Group Business...
- Page 8 The synchronization of the three converters is achieved by the use of a common ramp generator given by an internal 156.25 kHz signal derived by direct division of the 10 MHz main VCXO. A detailed block diagram of the STARLPRO-1500 is given by Fig. 2-4. ©SpectraTime Europe Headquarters North America Sales Offices Page 8 of 12 sales@spectratime.com...
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Page 9: Starlpro-1500 Specifications
Upon receipt of the unit, a thorough inspection should be made to ensure that no damage has occurred during shipping. If any damage is discovered, please contact Orolia Switzerland SA / Spectratime PHONE: +41 32 732 16 66... - Page 10 The general information for the mechanical interface of the STARLPRO-1500 unit is given in the package drawing of Fig. 4-4 Option M3 (code 'M3') Fig. 4-4 Fig. 4-5. Connector front view ©SpectraTime Europe Headquarters North America Sales Offices Page 10 of 12 sales@spectratime.com +41.32.732.16.66...
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Page 11: Pin Function Layout
All the working parameters are stored in a built-in EEPROM memory. In addition an 8 channel A/D converter is used for monitoring the main internal signals such as: light level, signal level, thermostats heating currents etc... ©SpectraTime Europe Headquarters North America Sales Offices Page 11 of 12 sales@spectratime.com... -
Page 12: Serial Interface Connection
5.12 x 10 step FC+99999 : interrogation LOCK MONITOR and XTAL MONITOR OUTPUTS The STARLPRO-1500 contains a ‘lock monitor’ function which consist in a monitoring of the internal parameters ©SpectraTime Europe Headquarters North America Sales Offices Page 12 of 12 sales@spectratime.com +41.32.732.16.66... -
Page 13: Ttl Or Cmos Level 'Lock Monitor' Generation
The lock monitor output can be directly connected to the CMOS load while protected with 1Kohm serial resistor. (Output impedance 1Kohm) . Lock: < 0.5V (Logical ‘0’) Unlock: > 4.2V (logical ‘1’) ©SpectraTime Europe Headquarters North America Sales Offices Page 13 of 12 sales@spectratime.com +41.32.732.16.66...
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