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The 8200 Line of Rubidium Oscillators
2. Product Description
This section contains a description of the 8200 rubidium oscillator. It lists its typical applications, and
gives information on dimensions, performance, and connector pin-outs.
The 8200 Line of Rubidium Oscillators
The 8200 Rugged Rubidium Oscillator is a high precision, reliable 10 MHz
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RF signal source. It is
specifically designed to operate in harsh environments consistent with military, avionics and indus-
trial applications, where signal medium-term, and long-term frequency stability is essential for mis-
sion success. It is designed using COTS (Commercial-Off-The-Shelf) components.
Owing to its overall design, long life Rb lamp, and extended crystal control range, the 8200's permits
extended operating periods without maintenance. The 8200 design produces a stable frequency with
good short and long term stability, and excellent spur performance.
The 8200 provides a 5V CMOS-compatible Built-in Self Test (BIST) Service and a LOCK alarm signal
derived from the basic physics operation.
This lock signal indicates when the output frequency is locked to the atomic resonance of rubidium.
When more control over the device is desired, an extensive command control status dialog is avail-
able.
In addition to controlling the operation of the oscillator, the microprocessor's built-in firmware allows
an external host computer to communicate with the embedded controller through a serial port con-
nection. This allows precise frequency control, the dynamic frequency selection, the ability to enable
and disable outputs, to query the system's health, and acquire information about the unit's serial
number, operating temperature, fault history, initiate a self test, and other performance indicators. The
protocol used is Symmetricom's proprietary Symmetricom Serial Interface Protocol (see " 6. Sym-
metricom Serial Interface Protocol" on page 22), or SSIP.
The simplified block diagram that follows, shows the importance of the digital control in the unit, how
it controls and monitors all aspects of operation, such as the heater circuits of the physics package,
as well as the selection of outputs.
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Other frequencies are available. Consult factory for details.
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