IQCM-300 ocxo specification issue 1; february 2016 outline (mm) working states diagram 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 i p backhaul supports ieee 1588v2,can 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 messages are available to the user via serial interface. 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-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 pt p & 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 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 printed on 26 apr 16 10:47 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-300 ocxo specification 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 <5 m a load lock: 2.7v min force hold: 0.4v max power supply details, pin 9: supply voltage : 5.0v 5% current consumption: 2.0 a during warm up , 1 a steady state @25c ac ripple: 50mv pk-pk max, 10hz to 1mhz pt p 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 operating temperature ranges -20 to 75c 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) o ffset typical max 10hz - 118 - 113 100hz -138 -133 1khz -148 -143 10khz -150 -145 100khz -150 -150 1mhz -150 -150 printed on 26 apr 16 10:47 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-300 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 alternative options may be available regarding operating temperature range, output type and holdover stability time and temperature change. please contact our sales department for details. 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 typical application printed on 26 apr 16 10:47 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-300 ocxo specification pin configuration pin number name description 1,6,8 gnd ground 2 sgmii_rxn pt p port, sgmii interface 3 sgmii_rxp pt p port, sgmii interface 4 sgmii_txn pt p port, sgmii interface 5 sgmii_txp pt p port, sgmii interface 7 bit_in building integrated timing supply input referance clock 9 vs supply voltage 4.75v to 5.25v 10 1pps_input 1pps input signal, from gnss or other referance source 11 force_hold when low the unit opperates in holdover mode 12 1pps_output 1pps output signal 13 ck_output frequency aligned output : 1hz and programmable frequency from 1khz to 180mhz 14 txd serial interface for acces to date word 9600-n-8-1 15 rxd serial interface for acces to date word 9600-n-8-1 16 s tatus lock status: 1 = locked, 0 = free run or holdover 17 sys_mode0 see notes 18 rf output 10mhz output from ocxo 19 reset reset the clock module 20 topsync_fault fault alarm 21 sys_mode1 see notes 22 spi_clk serial periferal interface slave port for comm's with microprocessor control serial clock 23 spi_sdi serial periferal interface slave port for comm's with microprocessor control slave input 24 spi_sdo serial periferal interface slave port for comm's with microprocessor control slave output 25 spi_cs serial periferal interface slave port for comm's with microprocessor control slave select 26 spi_int serial periferal interface slave port for comm's with microprocessor control interupt 27 tod_rx time of day input nmea 0183 or ubx protocol. ua rt has intergrated baud rate generator, 1 sopt bit, no parity, max baud 19200 28 tod_tx time of day input nmea 0183 or ubx protocol. ua rt has intergrated baud rate generator, 1 sopt bit, no parity, max baud 19200 printed on 26 apr 16 10:47 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
|
