IQCM-100 ocxo specification issue 1; february 2016 outline (mm) workflow diagram 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 1.5s 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-100. a mcu can be used to monitor the working state of the IQCM-100. 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-100 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-100 will operate in holdover mode regardless of the 1pps signal condition. output data word example : $pdp,00,0,f,1,-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, 20 11 -05-16*55 (see table for full description) printed on 26 apr 16 10:46 using model data sheet v1.2550 page 1 of 6 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-100 ocxo specification frequency parameters frequency 10.0mhz 10mhz rf output details, pin 2: hcmos compatible, 15pf load (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 vs temperature change for 1.5s t<5c standard option reference 7 days powered on, 2 days gnss lock temperature varied <1c/min within operating temperature range total temperature change holdover capability t<5c 1.5s max (specified) t<10c 2.4s max t<20c 4.1s max 1.5s holdover capability vs temperature change for 1.5s t<5c standard option reference 7 days powered on, 2 days gnss lock temperature varied <1c/min within operating temperature range total temperature change max time with 1.5s t<5c 24hrs (specified) t<10c 15hrs t<20c 9hrs electrical parameters 5.0v 5% supply voltage 1pps reference input, pin 10 (50? test condition): waveform : hcmos vih : 2.7v min vil : 0.4v max pulse width: 10us min stability: 200ns max state input, pin 8 (<5 m a load ): lock: 2.7v min unlock: 0.4v max power supply details, pin 12: supply voltage : 5.0v 5% current consumption: 2.5 a during warm up , 1 a steady state @25c warm up time : 15mins ac ripple: 50mv pk-pk max, 10hz to 1mhz 12.0v supply voltage also available, please contact our sale o ffice for details . operating temperature ranges -20 to 75c printed on 26 apr 16 10:46 using model data sheet v1.2550 page 2 of 6 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-100 ocxo specification 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: 10s min phase accuracy <30min after gnss lock status: 200ns >30min after gnss lock status: 80ns phase accuracy rms >24hrs after gnss lock status: 25ns 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) ua rt vol and vil : 0.4v max voh and vih : 2.7v min baud rate: 9600 bits: 8 parity: n stop bit: 1 noise parameters phase noise on 10mhz rf output signal (dbm/hz) o ffset typical max 10hz -125 -120 100hz -140 -135 1khz -148 -143 10khz -152 -147 100khz -155 -150 1mhz -155 -150 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 printed on 26 apr 16 10:46 using model data sheet v1.2550 page 3 of 6 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-100 ocxo specification ordering information 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 (standard option) 3.0us t<5c 8.0us t<5c 1.5us t<2c 3.0us t<2c 8.0us t<2c 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 operating temperature range options 0 to 80c -10 to 70c -20 to 75c (standard) -40 to 85c note: holdover stability options will a ffect capability 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 4 of 6 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-100 ocxo specification functional block diagram application information printed on 26 apr 16 10:46 using model data sheet v1.2550 page 5 of 6 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-100 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 abnorm 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 6 of 6 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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