OCXO Specification IQCM-200 ISSUE 1; February 2016 Description A GNSS disciplined OCXO incorporating sync to a 1pps input and 1pps output. Compatible with GPS, GLONASS, BEIDOU and GALILEO. Holdover stability up to 1.5µs over 24hours, achieved using an adaptive algorithm. Internal parameters of the algorithm, including maintenance alarms and message are available to the user via serial port. Frequency stability better than 1E-12 Application Information (Reference Drawing): Connect the 1PPS output of your GPS system to the IQCM-200. A MCU can be used to monitor the working state of the IQCM-200. 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. 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-200 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. Note3: When State input (Pin 8) is set low the IQCM-200 will operate in Holdover mode regardless of the 1PPS signal condition. Output Data Word Example: $PDP,00,0,F,Q,-3095,32768.0000,32768.0000,000,000,00000. 0000,00000.0000,00000.0000,00000.0000,3-23,+000.0000,-00 00,www.iqdfp.com,1.1,2011-05-16*55 Outline (mm) Workflow Diagram (See table for full description) Sales Office Contact Details: UK: +44 (0)1460 270200 France: 0800 901 383 Germany: 0800 1808 443 USA: +1.760.318.2824 Printed on 26 Apr 16 10:45 using Model Data Sheet V1.2550 Email: [email protected] Web: www.iqdfrequencyproducts.com Page 1 of 5 OCXO Specification IQCM-200 Frequency Parameters 10.0MHz Frequency 10MHz RF Output Details, Pin 14: HCMOS Compatible, 15pF load (Sinewave 50Ω option available) 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 25°C, 1s, using PN9000 test equipment): 2E-11 max Ageing (Vs and temperature constant, reference to T=25°C, Vs = 5.0V and after 30 days operation): ±0.2ppb per day, ±10ppb per year 24Hrs Holdover Capability Reference 7 days powered on, 2 days GPS lock Temperature varied <1°C/min within operating temperature range Total temperature change ΔT<±2°C Holdover capability ±1.5µs Note: Other options availible on request Electrical Parameters 5.0V ±5% Supply Voltage 1PPS Reference Input, Pin 10 (15pF test condition): Waveform: HCMOS ViH: 2.7V min ViL: 0.4V max Pulse Width: 10us min State Input, Pin 8 (<5mA load): Lock: 2.7V min Unlock: 0.5V max Power Supply Details, Pin 3: Supply Voltage: 5.0V ±5% Current Consumption: 1.4A during warm up, 600mA steady state @25°C AC Ripple: 50mV pk-pk max, 10Hz to 1MHz Operating Temperature Ranges -10 to 70°C Output Details Output Compatability HCMOS 1PPS Reference Output, Pin 12 (50Ω test condition): Waveform: HCMOS VoH: 2.7V min VoL: 0.4V max Pulse Width: 10µs min Lock Status Indicator, Pin 5: Module Locked: 2.7V min Module Holdover: 0.4V max Module Locked means Working State is = Run2 Serial interface (pin6 and pin7) UART VoL and ViL: 0.4V max VoH and ViH: 2.7V min Baud rate: 9600 Bits: 8 Paraty: N Stop Bit: 1 Sales Office Contact Details: UK: +44 (0)1460 270200 France: 0800 901 383 Germany: 0800 1808 443 USA: +1.760.318.2824 Printed on 26 Apr 16 10:45 using Model Data Sheet V1.2550 Email: [email protected] Web: www.iqdfrequencyproducts.com Page 2 of 5 OCXO Specification IQCM-200 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 -145 1MHz -150 -150 Environmental Parameters Operating Temperature Range: -10 to 70°C Storage Conditions: Temperature: -55 to 105°C Humidity: 30 to 80% Shock: IEC68-2-27 Test Ea, severity 50A, 50G 11ms half sinewave, 3 times in three mutually perpendicular axies Vibration: IEC 68-2-06 Test Fc, 10G, 0.75mm acceleration, 10Hz to 500Hz, 3 times in three mutually perpendicular axies Manufacturing Details ESD Level: ANSI/ESDA/JEDEC JS-001-2010; HBM Class 2; 2kV to 4kV ANSI/ESDA/JEDEC JS-001-2010; Machine Model Class B 200V to 400V Ordering Information 10MHz Output Compatability Options HCMOS (Standard) Sinewave Operating Temperature Range Options 0 to 80°C -10 to 70°C (Standard) -20 to 75°C Holdover Options ref 24hrs holdover period Max error Max temp change ±1.5us 0 to 60°C ±3.0us 0 to 60°C ±8.0us 0 to 60°C ±1.5us ΔT<±5°C ±3.0us ΔT<±5°C ±8.0us ΔT<±5°C ±1.5us ΔT<±2°C ±3.0us ΔT<±2°C ±8.0us ΔT<±5°C ±1.5us ΔT<±2°C (standard) Holdover Options ref 12hrs holdover period Max error Max temp change ±12.0us ΔT<±5°C Holdover Options ref 8hrs holdover period Max error Max temp change ±1.5us ΔT<±5°C ±3.0us ΔT<±5°C ±8.0us ΔT<±5°C ±1.5us ΔT<±2°C ±3.0us ΔT<±2°C ±8.0us ΔT<±2°C For other combinations please contact our sales offices Sales Office Contact Details: UK: +44 (0)1460 270200 France: 0800 901 383 Germany: 0800 1808 443 USA: +1.760.318.2824 Printed on 26 Apr 16 10:45 using Model Data Sheet V1.2550 Email: [email protected] Web: www.iqdfrequencyproducts.com Page 3 of 5 OCXO Specification IQCM-200 Compliance RoHS Status (2011/65/EU) REACh Status MSL Rating (JDEC-STD-033): Compliant Compliant Not Applicable Packaging Details Pack Style: Bulk Pack Size: 1 Loose in bulk pack Functional Block Diagram Application Information Sales Office Contact Details: UK: +44 (0)1460 270200 France: 0800 901 383 Germany: 0800 1808 443 USA: +1.760.318.2824 Printed on 26 Apr 16 10:45 using Model Data Sheet V1.2550 Email: [email protected] Web: www.iqdfrequencyproducts.com Page 4 of 5 OCXO Specification IQCM-200 Output Data Word (Format Key: c=Character, d=Numerical Digit, s=Sign) Field NO. Name Format Description Length 0 $PDP $ccc Message ID, Protocal Header 4 1 No dd Message No 2 2 TxRxFlag d 1 3 CStatus c 4 TrackStatus d 5 cPHDiff sdddd 6 cPWM1 ddddd.dddd 7 cPWM2 ddddd.dddd 8 SYNCNT ddd Transmit and Receive Flag (0=upper computer transmit, 1=upper computer receive) Current Status (F=warm up, L=lock, H=holdover) Track status (Q= fast track, S = slow track) Current phase difference, 1 unit = 6.25ns Current PWM1 (Voltage control value1) Current PWM2 (Voltage Controlled Value 2), not used, defult value =32769.000000 The synchornous times 9 HCNT ddd Power on hours count 3 10 HPAVG ddddd.dddd 10 11 VCH1 ddddd.dddd 12 HPMOD ddddd.dddd The average of the PWM in the last half hour Voltage Controlled compensation value every half hour The Module PWM Value 13 VCM10 ddddd.dddd 10 14 POS d-dd 15 inT sdddd.ddd Voltage controlled compensation value every 10mins The position of the product. (Layer-No), just for the inner test. NA 16 TcPHDiff sdddd The product current phase difference www.IQDFP.com 5 1 1 5 10 10 3 10 10 4 9 17 Website 18 Version d.d version 3 19 Date dddd-dd-dd Date 10 55 2 <CR><LF> 2 20 21 dd END 13 Sales Office Contact Details: UK: +44 (0)1460 270200 France: 0800 901 383 Germany: 0800 1808 443 USA: +1.760.318.2824 Printed on 26 Apr 16 10:45 using Model Data Sheet V1.2550 Email: [email protected] Web: www.iqdfrequencyproducts.com Page 5 of 5