Special Features:

Accuracy +/- 7x10-12; settability +/- 3x10-12; operating temp range 0 to 50deg. C; stability +/-3x10-12 over the life of the tube; spectral purity >81db for 10mhz and >87 for 5mhz; amplitude 1vrms into 50 ohm load; monitor output is a type d connector; warmup time is 20min for 10 mhz and 45 min for 5mhz; front panel connectors for 1pps, sync input, zeeman input, rf outputs; operating humidity, 95% up to 50c; option -116 is time of day display and a 1pps output; opt -075 is for an 8 year warranty on cesium beam tube; internal microprocessor provide for power up automatic lock routine; controlled by front panel switches and remote control through rear panel connector

Properties:

An item that can generate a fundamental frequency with a high degree of accuracy. Harmonics of this fundamental are then used as a reference point for checking throughout the radio spectrum. The standard may be stable crystal oscillator, noncrystal oscillator, tuning fork, atomic beam, molecular beam, gas cell, quantum mechanical resonator, or the like.