Crystal Clock Type R405

This document is a technical specification for the Type R405 Crystal Clock. It utilizes a series resonant crystal oscillator, a squaring circuit, and an output pulse amplifier. The device maintains a frequency accuracy of 0.01% within an operating temperature range of 0°C to +55°C, with custom frequencies available between 5 kHz and 2 MHz. The unit provides a 100-nanosecond, -3V pulse output capable of driving a 70 mA external load, and operates on power supplies of +10V (5.4 mA) and -15V (50 mA).