INTELLIGENT REFERENCE/TM-4™ and TM-4/OEM™

1 INTELLIGENT REFERENCE/TM-4 and TM-4/OEM INSTRUMENTS, INC. 8271 WEST McDURMOTT SUITE F IRVINE, CA 92614 TEL:(714) 544-3000 INSTRUMENTS, INC. 570 E. ARROW HIGHWAY SUITE D SAN DIMAS, CA 91773 TEL:(909) Standard 1 PPS output with separate ASCII serialtime message 25ns timing accuracy Optional Network Time Protocol output Optional IRIG and NASA-36 time codes Very high spectral purity sine wave output Very low phase noise (OCXO versions) Small size ( x x excluding connectors) Available as OEM board-only product Simple RS-232C ASCII command and message set,includes navigation information and NMEA-0183 subset Wide input power range: 9-35 VDC Standard input and output connectors Windows based control software included Choice of GPS antennas (antenna kit sold separately) Optional multiple sine wave outputs Highly customizable Standard 1 PPS output with separate ASCII serialtime message 25ns timing accuracy Optional Network Time Protocol output Optional IRIG and NASA-36 time codes Very high spectral purity sine wave output Very low phase noise (OCXO versions) Small size ( x x excluding connectors) Available as OEM board-only product Simple RS-232C ASCII command and message set,includes navigation information and NMEA-0183 subset Wide input power range.

2 9-35 VDC Standard input and output connectors Windows based control software included Choice of GPS antennas (antenna kit sold separately) Optional multiple sine wave outputs Highly customizable State-of-the-art 12-channel GPS timing receiver Choice of oscillator type and qualities, includingultra-low power OCXO and low cost TCVCXO MTIE Stratum-1 compliant INTELLIGENT Holdover provides near-Rubidiumstability during temporary GPS unavailability FastStart technology provides high accuracywithin just minutes of startup Simultaneous event time-tag and programmedoutput pulse functions Optional programmable wide-range filtered timingpulse, synchronous to PPS, with ultra-low jitter Optional GPS-corrected PLL frequency synthesizergenerates almost any frequency up to 125 MHz Multiplexer outputs for divide-down multiples of theprimary oscillator output, TTL level Optional CTCSS tone generator State-of-the-art 12-channel GPS timing receiver Choice of oscillator type and qualities.

3 Includingultra-low power OCXO and low cost TCVCXO MTIE Stratum-1 compliant INTELLIGENT Holdover provides near-Rubidiumstability during temporary GPS unavailability FastStart technology provides high accuracywithin just minutes of startup Simultaneous event time-tag and programmedoutput pulse functions Optional programmable wide-range filtered timingpulse, synchronous to PPS, with ultra-low jitter Optional GPS-corrected PLL frequency synthesizergenerates almost any frequency up to 125 MHz Multiplexer outputs for divide-down multiples of theprimary oscillator output, TTL level Optional CTCSS tone generatorFEATURES and PERFORMANCEFEATURES and PERFORMANCEThe INTELLIGENT Reference/TM-4 is our most advanced standard product, and we designed it toachieve new levels of performance, quality and value. The TM-4 and TM-4/OEM deliver a vastand useful array of standard and optional features in a very small and easy to integrate better, it isn t limited to our idea of what a reference should be.

4 The flexibility of the TM-4platform allows for custom modifications to meet your exact requirements, often at little or noadditional INTELLIGENT Reference/TM-4 is our most advanced standard product, and we designed it toachieve new levels of performance, quality and value. The TM-4 and TM-4/OEM deliver a vastand useful array of standard and optional features in a very small and easy to integrate better, it isn t limited to our idea of what a reference should be. The flexibility of the TM-4platform allows for custom modifications to meet your exact requirements, often at little or noadditional FREQUENCY AND SYNCHRONIZATON REFERENCEFROM SPECTRUM INSTRUMENTSPRECISE FREQUENCY AND SYNCHRONIZATON REFERENCEFROM SPECTRUM INSTRUMENTSS pecifications: INTELLIGENT REFERENCE/TM-4 and TM-4/OEM PHYSICAL (In Enclosure) in.( mm) in.( mm) in.( mm) ozs.( kg)PERFORMANCE (FREQUENCY)PRIMARY FREQUENCY: 10 MHz. Meets MTIE requirement for Stratum-1 primary clock STABILITY: 1x10-12 after 24hours of tracking.

5 ( t=24 hours)SHORT-TERM STABILITY:1x10-11 ( t=1 second)ACCURACY WHILE COASTING: 5x10-10 perday after 3 days of locked operation, NOISE, 1 HZ BANDWIDTH:10 Hz:< -124 dBc100 Hz: < -139 dBc1 kHz:< -149 dBc10 kHz: < -151 dBc100 kHz: < -155 dBcHARMONIC OUTPUTS: <-50 dBcSPURIOUS OUTPUTS: <-70 dBcINPUTS & OUTPUTS1 PPS OUTPUTC onnector: BNCD rive: TTL levels into 50 Rise Time: 10 ns, maximumPulse Width: Positive pulse, 1 ms edge on-time. PPS connector can befactory-reconfigured to deliver IRIG, multiplexer,or other output instead of MHz OUTPUTC onnector: BNCD rive: High spectral-purity sine wave, +10 dBminto 50 , 2dBGPS ANTENNAC onnector: TNCCONTROL and AUXILIARY I/OConnector: DB-15HD (female)SERIAL CONTROL I/O: RS-232C, 9600bpsALARM OUTPUT: Open collectorSERIAL TIME MESSAGE: RS-232C, 1200-19200bps standard, ASCII date and time of next 1 PPS epoch. NMEA-0183 message configurable for optional NTP rates of 38400, 57600 and 115200 EVENT INPUT: TTL/CMOS level,edge-triggered, polarity selectablePROGRAMMED OUTPUT PULSE:Drive: TTL levels into 50 Rise/Fall Time: 10 ns, maximumPulse Width: User-selectable, 1 sec-250 msPolarity: SelectableMULTIPLEXER OUTPUTS:Drive: TTL levels into 50 Rise/Fall Time: 10 ns, maximumMux 1: 1,10,100 kHz, 1,5,10 MHz, PPS,baseband IRIG (optional)Mux 2: 10 MHz, Mux 1 mirror, PPS,baseband IRIG (optional), baseband NASA-36(optional), custom outputs 1-3 (special option)OPTIONAL IRIG/NASA-36 OUTPUT:Type: TTL and modulatedOutput Level: Vptp into 600 Modulation Level: :1 OPTIONAL PLL FREQUENCY SYNTHESIZER:Frequency: Virtually any frequency desiredfrom to 125 MHz.

6 Factory : TTL levels into 50 Accuracy: Same as primary frequency Time: 2 ns, maximumOutput: 50% duty-cycleOPTIONAL AUXILIARY FREQUENCY OUTPUT:Frequency: VCXO-derived. Divide or multiplypossible. Factory : TTL levels into 50 Accuracy: Same as primary frequency Time: 10 ns, maximumOutput: 50% duty-cycleOPTIONAL FILTERED TIMING PULSE:Frequency: Virtually any frequencyup to 100 kHz, such as 1 Hz, 25 Hz, Hz, etc. Factory : TTL levels into 50 Rise/Fall Time: 10 ns, maximumOutput: Positive pulse, 10 sec,nominal. Rising edge : Same as primary frequency : Coherent with primaryfrequency output. Leading edge synchronizedwith average value of PPS from GPS low , E. ARROW HIGHWAY, SUITE DSAN DIMAS, CA 91773 TEL: (909) 971-9710 FAX: (909) 971-9330 subject to change without notice. Consult factory for performance specifications for optional 2005 Spectrum Instruments, Inc. All rights (GPS)RECEIVER TYPE: Twelve parallel channel,code + carrier tracking, CA code, L1 carrierTIME TO FIRST FIX (typical):Hot Start: <15 seconds (validalmanac, time, date, position & ephemeris)Warm Start: <40 seconds (validalmanac, time, date & position)Cold Start: <60 seconds (no information)POSITION UPDATE RATE: Once per second, ACCURACY: Less than 25m SEPOSCILLATORSHIGH-PERFORMANCE OCXO: standardLOW-POWER OCXO: optionalTCVCXO: optionalSTANDARD FREQUENCY: 10 MHzOPTIONAL FREQUENCIES: 5, , 13 MHz consult factory for additional oscillator optionsPOWERINPUT SUPPLY VOLTAGE: 9 to 35 VDC,24 VDC nominalINPUT CONNECTOR: DB-15HD (female)POWER CONSUMPTION: watts afterwarm-up.

7 Low-power option POWER OUT: 5 VDC, 20 mAGPS BACKUP: Rechargeable lithium batteryENVIRONMENTALOPERATING TEMPERATURE: -20 to +70 C,extended range optionalSTORAGE TEMPERATURE: -40 to +85 CHUMIDITY: Up to 95% , non-condensingACCESSORIES GPS antenna kits Power/Control/Data cable 1U Rack mount kit Distribution amplifiers Connection (breakout) board AC power adapter, US or by country Rechargeable battery pack/UPSPERFORMANCE (TIME)1 PPS OUTPUT: (Referenced to UTC)Accuracy: 25ns RMSA ccuracy while coasting: Same asprimary frequency outputOPTIONS IRIG and/or NASA-36 serial time code NTP output Filtered timing pulse GPS-corrected PLL frequency synthesizer GPS-corrected auxiliary frequency output CTCSS (PL) tone generator Higher baud rates for serial time messages Low-power OCXO and other oscillator choices Extended operational temperature range Substitute other frequency for primary output Custom multiplexer and/or other output Multiple sine wave outputs Custom functions Customized user softwar