iqcm- 110 ocxo specification issue 1; february 2016 outline (mm) workflow diagram description a gps disciplined ocxo incorporating gps receiver unit , to give 1pps and 10mhz output. holdover stability up to 1.5s over 24hours, achieved using an adaptive algorithm. standard nmea0183 data is available to the user via serial port. frequency stability better than 1e-12 working states (reference drawing): run1: fast track. adjust the ocxo 10mhz output frequency quickly to track the gps. run2: slow track. adjust the ocxo 10mhz output frequency slowly when phase error is in the defined range. holdover: no gps 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 gps input. note1: the iqcm- 110 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- 110 will operate in holdover mode regardless of the 1pps signal condition. nme a data words the following standard gnss data is available to the user via the interface on pin 6 and pin 7. gprmc, gpvtg, gpgga, gpgsa, gpgsv, gpgll, gpzd a these are broadcast every second in sync with the 1pps output frequency parameters frequency 10.0mhz 10mhz rf output details, pin 2: hcmos compatible (sinewave 50? 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 25c, 1s, using pn9000 test equipment): 2e- 11 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 reference 7 days powered on, 2 days gps lock temperature varied <1c/min within operating temperature range total temperature change holdover capability t<2c 1.5s note: other options available on request printed on 26 apr 16 10:45 using model data sheet v1.2550 page 1 of 4 sales office contact details: usa: +1.760.318.2824 france: 0800 901 383 uk: +44 (0)1460 270200 germany: 0800 1808 443 email: info@iqdfrequencyproducts.com web : www.iqdfrequencyproducts.com
iqcm- 110 ocxo specification electrical parameters 5.0v 5% supply voltage 1pps output from internal gps receiver, pin 10: waveform : hcmos test condition : 15pf vih : 2.7v min vil : 0.4v max pulse width: 100ms min state input, pin 8 (<5 m a load ): lock: 2.7v min unlock: 0.4v max pin 8 has an internal pull-up cct. power supply details, pin 12: supply voltage : 5.0v 5% current consumption: 2 a during warm up , 1 a steady state @25c ac ripple: 50mv pk-pk max, 10hz to 1mhz gps internal receiver specification: type : gps position lock number of channels: 50 frequency band: l1 (1575.42mhz) tracking code : c/ a code tracking capability : 12 satellites sensitivity: tracking and navigation 162dbm reacquisition -157dbm cold start (autonomous) -148dbm antenna input sma-ke (active antenna recommended) operating temperature ranges -20 to 75c output details output compatability hcmos 1pps reference output, pin 3 (15pf test condition): waveform : hcmos voh : 2.7v min vol : 0.4v max pulse width: 100ms min lock status indicator, pin 5: module locked: 2.7v min module holdover: 0.4v max module locked means working state is = run2 current 5 m a max serial interface (pin6 and pin7) nmea-0183 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) o ffset typical max 10hz - 118 - 113 100hz -138 -133 1khz -148 -143 10khz -150 -145 100khz -150 -145 1mhz -150 -150 printed on 26 apr 16 10:46 using model data sheet v1.2550 page 2 of 4 sales office contact details: usa: +1.760.318.2824 france: 0800 901 383 uk: +44 (0)1460 270200 germany: 0800 1808 443 email: info@iqdfrequencyproducts.com web : www.iqdfrequencyproducts.com
iqcm- 110 ocxo specification environmental parameters operating temperature range: -20 to 75c storage conditions: temperature : -55 to 105c humidity: 30 to 80% shock: iec68-2-27 test ea , severity 50a, 50g 11 ms 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 80c -10 to 70c -20 to 75c (standard) -40 to 70c -40 to 85c note: holdover stability options will a ffect capability holdover options ref 24hrs holdover period max error max temp change 1.5us 0 to 60c 3.0us 0 to 60c 8.0us 0 to 60c 1.5us t<5c 3.0us t<5c 8.0us t<5c 1.5us t<2c 3.0us t<2c 8.0us t<2c 1.5us t<2c (standard option) holdover options ref 12hrs holdover period max error max temp change 12.0us t<5c holdover options ref 8hrs holdover period max error max temp change 1.5us t<5c 3.0us t<5c 8.0us t<5c 1.5us t<2c 3.0us t<2c 8.0us t<2c for other combinations please contact our sales o ffices compliance compliant rohs status ( 20 11 /65/eu) compliant reach status ms l rating (jdec-std-033): not applicable packaging details loose in bulk pack pack style: bulk pack size: 1 printed on 26 apr 16 10:46 using model data sheet v1.2550 page 3 of 4 sales office contact details: usa: +1.760.318.2824 france: 0800 901 383 uk: +44 (0)1460 270200 germany: 0800 1808 443 email: info@iqdfrequencyproducts.com web : www.iqdfrequencyproducts.com
iqcm- 110 ocxo specification 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 transmit and receive flag (0=upper computer transmit, 1=upper computer receive) 1 3 cstatus c current status (f=warm up, l=lock, h=holdover) 1 4 trackstatus d track status (q= fast track, s = slow track) 1 5 cphdi ff sdddd current phase di fference , 1 unit = 6.25ns 5 6 cpwm1 ddddd.dddd current pwm1 ( voltage control value1) 10 7 cpwm2 ddddd.dddd current pwm2 ( voltage controlled value 2), not used, defult value =32769.000000 10 8 syncnt ddd the synchornous times 3 9 hcnt ddd power on hours count 3 10 h pavg ddddd.dddd the average of the pwm in the last half hour 10 11 vch1 ddddd.dddd voltage controlled compensation value every half hour 10 12 hpmod ddddd.dddd the module pwm value 10 13 vcm10 ddddd.dddd voltage controlled compensation value every 10mins 10 14 pos d-dd the position of the product. (layer-no), just for the inner test. 4 15 temp sdddd.ddd the temperature monitor inside the module 9 16 alarmflag sdddd only the last 1 byte indicates alarm flag (0=normal, 1=ocxo warmup abnormal, 2=ocxooutput abnormal, 3=internal temperature sensor abnormal 5 17 website ww w.iqdfp.com 13 18 version d.d version 3 19 date dddd-dd-dd date 10 20 dd 55 2 21 end 2 printed on 26 apr 16 10:46 using model data sheet v1.2550 page 4 of 4 sales office contact details: usa: +1.760.318.2824 france: 0800 901 383 uk: +44 (0)1460 270200 germany: 0800 1808 443 email: info@iqdfrequencyproducts.com web : www.iqdfrequencyproducts.com
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