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The 180A divides down the clock signal using synchronized monostable multivibrators. | The 180A divides down the clock signal using synchronized monostable multivibrators. | ||
This scheme does not require precision in the time constant of the monostable multivibrators. | This scheme does not require precision in the time constant of the monostable multivibrators. | ||
The only precision component in the 180A is the OCXO (part number 158-007). | The only precision component in the 180A is the OCXO (part number [[158-007]]). | ||
The manual suggests an interesting procedure for calibrating the OCXO, | The manual suggests an interesting procedure for calibrating the OCXO, | ||
by attaching a small antenna to deliberately interfere with the national time standard broadcast, | by attaching a small antenna to deliberately interfere with the national time standard broadcast, |