Spectracom NetClock 9400 Series, Руководство пользователя

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TCXO (Temperature-Compensated Crystal Oscillator)
one of two different types of OCXO (Oven-Controlled Crystal Oscillator) oscillators, or
one of two different types of Rb (Rubidium) oscillators.
The two different types of OCXO oscillators are a precision OCXO oscillator and a high-pre
cision (low phase noise) OCXO oscillator. The two different types of Rubidium oscillators are a
precision Rubidium oscillator and a low-phase noise Rubidium oscillator. All of these internal
oscillators are self-calibrating and can be disciplined to a 1PPS input reference for maximum
accuracy.
To determine which oscillator is installed in your NetClock unit, navigate to MANAGEMENT >
OTHER: Disciplining . The first entry in the Status panel on the left indicates the type of oscil
lator:
Because of its high degree of stability, the Rubidium oscillator provides the greatest ability to
extend the hold-over period when input references are not present. Extending the hold-over
period allows the unit to provide very accurate and useable time stamps and a 10 MHz output
for a longer period of time once time synchronization has been lost.
Note: Oscillators are installed at the factory, in accordance with order spe
cifications; an oscillator cannot be swapped/retrofitted later in the product life
cycle (with the exception of repairs).
The Rubidium oscillator is atomic in nature but requires no MSDS (Material Safety Data Sheet).
Note: External Oscillator : It is possible for an external oscillator to be locked to
NetClock's 10 MHz output via an external PLL, with the lock state of the external
PLL monitored by NetClock. Contact Spectracom for more information.
3.5.2 Configuring the Oscillator
NetClock is equipped with an internal oscillator. To configure the oscillator settings:
3.5 Managing the Oscillator
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