OCXO Specification Part No. + Packaging: LFOCXO067293BULK Description High Holdover Capability PTP, 1588 Clock Module. Designed to provide easy-to-use holdover capability for GPS receivers. Ideal protection against deliberate or accidental GPS jamming and weather-related outages Applications include Base Station, Clock Source, Clock Server and IP Backhaul Supports IEEE 1588V2can be1588 master or slave Holdover stability up to 1.5s over 24hours, achieved using an adaptive algorithm. Internal parameters of the algorithm, including maintenance alarms and me Model IQCM-300 Model Issue number 1 Working States (Reference Drawing): Run1: Fast track. Adjust the OCXO 10MHz output frequency quickly to track the 1PPS to 10MHz with 1PPS reference. Run2: Slow track. Adjust the OCXO 10MHz output frequency slowly when phase error is in the defined range. Outline (mm) Holdover: No 1PPS input present an algorithm enables adaptive modelling of the frequency stability of an OCXO with reference to the GPS timing signal. Free Run: Clock module powered up with no 1PPS input. Note1: The IQCM-300 should be left powered and running for 7 days minimum before operation to allow for the OCXO s internal drift to stabilise. Note2: The adaptive module algorithm can be built after two days operation with good GPS signal, however this data will be lost at power down. System Mode SYS MODE0 SYS MODE1 Operation pin17 pin21 0 0 Combined PTP & Phy Layer Timing 0 1 SGMII/Ethernet self test port 0 1 0 SGMII/Ethernet self test port 1 1 1 Restor factory defult setttings Frequency Parameters Frequency 10.0MHz Operating Temperature Range -20.00 to 75.00C 10MHz RF Output Details, Pin 18: HCMOS Compatible, 15pF load VoH: 2.7V min VoL: 0.4V max Rise and Fall time: 8ns max Duty Cycle: 45/55% max Accuracy (24-hour averaging when locked to 1PPS): 1E-12 Short Term Stability (tested after power for 1hr ref to 25C, 1s, using PN9000 test equipment): 5E-12 max Ageing (Vs and temperature constant, reference to T=25C, Vs = 5.0V and after 30 days operation): 0.2ppb per day, 10ppb per year 24Hrs Holdover capability vs temperature change 1.5s max T<5C during holdover period Reference 7 days powered on, 3 days GNSS lock Temperature varied <1C/min within operating temperature range Sales Office Contact Details: UK: +44 (0)1460 270200 France: 0800 901 383 Email: info iqdfrequencyproducts.com Germany: 0800 1808 443 USA: +1.760.318.2824 Web: www.iqdfrequencyproducts.com Printed on 15 Mar 17 9:57 using Part Data Sheet V1.00014 Page 1 of 4OCXO Specification Part No. + Packaging: LFOCXO067293BULK Electrical Parameters 5.0V 5% Supply Voltage 1PPS Reference Input, Pin 10 (50 test condition): Supplied from your GNSS system, or alternative 1PPS source. Waveform: HCMOS ViH: 2.7V min ViL: 0.4V max Pulse Width: 10us min Force Hold Input Pin 11: Used to force the unit into holdover mode regardless of GNSS lock status. Test condition <5mA load Lock: 2.7V min Force Hold: 0.4V max Power Supply Details, Pin 9: Supply Voltage: 5.0V 5% Current Consumption: 2.0A during warm up, 1A steady state 25C AC Ripple: 50mV pk-pk max, 10Hz to 1MHz PTP Interface pin 2, 3, 4, 5: Serial Gigabyte Media Independent Interface SGMII supply voltage levels: Rx analogue DC, 1.2V: -0.5V min 1.4V max Tx analogue DC, 1.2V: -0.5V min 1.4V max Rx analogue DC, 3.3V: -0.5V min 3.7V max TX analogue DC, 3.3V: -0.5V min 3.7V max Digital DC, 1.2V: -0.5V min 1.4V max RX analogue DC, 1.2V: -0.5V min 1.4V max TX analogue DC, 1.2V: -0.5V min 1.4V max RX analogue DC, 3.3V: -0.5V min 3.7V max TX analogue DC, 3.3V: -0.5V min 3.7V max Output Details Output Compatability HCMOS 1PPS Reference Output, Pin 12 (15pF test condition): Waveform: HCMOS VoH: 2.7V min VoL: 0.4V max Pulse Width: 100ms min Lock Status Indicator, Pin 16: Module Locked: 2.7V min Module Holdover: 0.4V max Module Locked means Working State is = Run2 Serial Interface (pin14 and pin15) VoL and ViL: 0.4V max VoH and ViH: 2.7V min Baud rate: 9600 Bits: 8 Paraty: N Stop Bit: 1 Noise Parameters Phase Noise on 10MHz RF output signal (dBm/Hz) Offset Typical Max 10Hz -118 -113 100Hz -138 -133 1kHz -148 -143 10kHz -150 -145 100kHz -150 -150 1MHz -150 -150 Sales Office Contact Details: UK: +44 (0)1460 270200 France: 0800 901 383 Email: info iqdfrequencyproducts.com Germany: 0800 1808 443 USA: +1.760.318.2824 Web: www.iqdfrequencyproducts.com Printed on 15 Mar 17 9:57 using Part Data Sheet V1.00014 Page 2 of 4