GPS/GNS Freq. and Time Ref., 3207A
The ptf 3207A GlobalTyme2 GNSS Receiver introduces a new level of advanced capability from a second generation, based on the highly successful ptf 3203A and ptf 3204A GlobalTyme receivers.
The unit is both a frequency standard and a time standard and has been used as a precision frequency reference with low phase noise, in satellite communications applications around the world.
With its extraordinary stability and highly flexible approach, this unit provides numerous input source options and the latest updates in industry standard protocols. Available in both 1U and 2U versions, the GlobalTyme 2 unit can be configured as a high performance frequency standard, comprehensive time standard, or both.
Frequency standard performance is application tailored with a range of local oscillator options including, OCXO (standard), Ultra Low noise oscillator, rubidium, and high-performance rubidium. In standard configuration the GlobalTyme 2 is equipped with 10MHz (options to add 100kHz, 1MHz, and 5MHz), 1PPS and IRIG B(am) outputs. Additional options for selectable output clock frequencies are also available.
For timing, synchronization and time keeping, the unit provides NTP(v4), in addition to the standard 1PPS and IRIG B outputs. The 1PPS output is accurate within 20nS of UTC (option for 10nS). The optional 1PPS, IRIG, and 10MHz inputs offer system redundancy or simply alternative master reference inputs to GNSS if desired.
For monitoring and control the unit houses both RS232 serial and Ethernet (RJ 45) with various protocols suited to different user needs including Telnet, SNMP(optional) and a browser driven web interface.
- GNS Tracking: 34 parallel channels
- GPS, Beidou/Galileo Glonass, QZSS, SBAS
- Optional Count down Time Code (-TC)
- Accuracy (1PPS): <20ns
- 100/10 Base T Ethernet
- NTP v4
- Monitor/ Control i/f
- Web Browser
- Telnet
- Serial
- Alarm indicator and output
- GNS antenna and cable included
- Available in 1U and 2U

Electrical | |
GNS Sub system | 26 Channel |
Front Panel Display | Vacuum Fluorescent |
10MHz sine | 1V rms (13dBm) 50 ohm |
1PPS/Digital | 5V CMOS 50 ohm |
Pulse Rates | 1PPS,1PPM,1PHH, 1PPH |
Pulse Range | 1Hz to 10MHz |
Time Code | IRIG B(am) IEEE 1344 |
IRIG B DCLS | |
NASA 36(opt) | |
IRIG A, E, G, H | |
Harmonics | < -40dB |
Non-Harmonics | < -80dB |
Connectors | BNC |
Alarm Output | Summary alarm (9 pin 'D') |
Indicators | Power/Lock(Green LED) Alarm(Red LED) |
Additive SSB Phase Noise (db/Hz) | |
Offset | Phase Noise (dBc/Hz) |
1Hz | -94 |
10Hz | -130 |
100Hz | -155 |
1000Hz | -162 |
10kHz | -162 |
Accuracy | |
10MHz | <2E-12(locked to GNS) |
1PPS | |
NTP | <10ms(typical) |
Stability | |
1s | <3E-11(OCXO) <2E-11(Rub) |
10s | <2E-11(OCXO) <9E-12(Rub) |
100s | <2E-11(OCXO) <1E-12(Rub) |
Environmental and Physical | |
Temperature | 0 to 50 deg C |
Rel Humidity | 0 to 95% non-condensing |