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Why doesn't my YBGPS1 GPS Timing Reference Unit improve the frequency accuracy of my YBT250? I've connected it to the Frequency Reference input.

問題:

Why doesn't my YBGPS1 GPS Timing Reference Unit improve the frequency accuracy of my YBT250? I've connected it to the Frequency Reference input.

答案:

The YBGPS1 output should be connected to the Timing Input on the YBT250. The reason is that the GPS receiver is putting out one second clock pulses, not a 10 MHz reference signal. The YBT250 takes this information and uses it to improve the frequency accuracy to .015 PPM, or 30 Hz at 2 GHz.

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常見問答集 ID 64396

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