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reference frequency

    0.01 sec.
reference frequency [′ref·rəns ‚frē·kwən·sē]
(communications)
Frequency having a fixed and specified position with respect to the assigned frequency.


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The lock-in amplifier is controlled by a computer which sets the lock-in internal reference frequency and reads the resulting PMT signal.
Two optional clocks with 32,768 Hz (low power mode) or 10 MHz (high power mode) provide a reference frequency.
The Model 9552 is a high performance oven-controlled quartz crystal oscillator that produces a highly stable, low noise reference frequency output.
 
 
 
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