GPSDO-10MHz GPS Disciplined Oscillator GPSDO GPS Clock (Square Wave Version) with 10MHz Output

GPSDO-10MHz GPS Disciplined Oscillator GPSDO GPS Clock (Square Wave Version) with 10MHz Output

Description:
The locking speed of GPSDO-10MHz is fast. In open ground, its frequency accuracy can reach 5E-9 within 3-5 minutes, that is, the accuracy can reach 0.05Hz at 10MHz.

Specifications:
- Model No.: GPSDO-10MHz
- Item name: GPS Disciplined Oscillator
- Output: 10MHz
- Waveform: Square wave
- Product power supply: DC 11.7-12.9V/15W
- GPS antenna power supply: DC 3.3V
- 1PPS output waveform & amplitude: square wave, 3.3Vpp
- 10M output waveform amplitude: square wave, 1Vrms (13dBm±3dB)
- RS232 output: GPS NMEA signal
- Accuracy: 2 orders of magnitude higher than OCXO
- Dimensions (WxDxH): 107mm x 122mm x 55mm/4.2" x 4.8" x 2.2" (including front connectors)

Package Included:
- 1 x GPS Disciplined Oscillator
- 1 x AC110-220-DC12V Adapter
- 1 x 5m/16.4ft GPS Antenna

Packaging Details:
- G.W.: 0.65kg

FAQ:
1.What is GPS and what is GPS DO?
Answer: GPS is the abbreviation of Global Positioning System. What we often use on a daily basis is its positioning function. Another important use of GPS is timing. GPSDO is the abbreviation of Global Positioning System Disciplined Oscillator. We can use the GPS timing function to adjust a clock to make it more accurate.

2. What is the basic principle of GPSDO? Why is it more accurate than atomic clocks?
Answer: GPSDO uses the standard time signal output by a GPS module, generally a second pulse (1pps), to control or compare the frequency of an OCXO, and then output the signal to correct the frequency error of the OCXO. There is no cumulative error in the output of the GPS signal and the long-term accuracy is very high, so GPSDO is more accurate than atomic clock.

3. In which scenarios is GPSDO used?
Answer: Most often, GPSDO is used in the base station of mobile phones, as a standard signal source and a reference.

4. Can I use it without the GPS antenna?
Answer: Yes. Not connected to the GPS antenna, GPSDO is equal to an ordinary OCXO.

5. How do I place the GPS antenna? Can I place the antenna indoors or near a window through the glass? What should I do if GPS cannot be locked?
Answer: The GPS antenna needs to be placed outdoors. It is directly facing the sky, not through the glass, because glass will attenuate the 1.5G signal a lot.

The antenna should be facing the sky, at least 1/5 of the sky. Otherwise, the sky area is small, leading to poor GPS signal and poor corresponding frequency accuracy.

GPS can't be locked, mainly because the antenna is facing a relatively small area of the sky. You can place the antenna in an open area, or you can place an iron plate on the back of the antenna, and adjust the distance between the iron plate and the antenna to enhance the signal.

6.What should I do if the antenna is not long enough due to the constraints?
Answer: You can add an extension cable. We used an 8-meter extension cable in our test environment. And you can buy a long GPS antenna, such as a marine GPS antenna. Some of marine GPS antennas are up to 30 meters, 50 meters, and even up to 100 meters long.

7.Can the GPS antenna be connected to the cable TV antenna at home?
Answer: No, because cable TV does not have a 1.575G GPS signal.

8. How to use the circuit board when I get the product?
Answer: Connect the GPS antenna. The antenna is facing the sky. Connect a DC12V/1.5A power supply, and the corresponding SMA port can output a 10MHz standard signal.

9. Can it be used in the HIFI field or for audio?
Answer: Yes, but it is rare to use in these two fields. The GPSDO can be used in audio because of the precise frequency. The detail of the sound is enhanced, the resolution is increased, and the background noise can be reduced.