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15 result(s) found where the letter starting with "C"

Calibration
The process of identifying and measuring time or frequency errors, offsets, or deviations of a clock/oscillator relative to an established standard, such as UTC(NIST)
 

Calibration tolerance
The allowable offset in ppm from nominal frequency usually referenced to +25ºC
 

CAS
Channel Associated Signaling
 

CC
Composite Clock
 

CCITT
International Telegraph and Telephone Consultative Committee (now ITU)
 

CCS
Common Channel Signaling
 

CDMA
Code Division Multiple Access. A coding scheme, used as a modulation technique, in which multiple channels are independently coded for transmission over a single wideband channel. Note 1 : In some communication systems, CDMA is used as an access method that permits carriers from different stations to use the same transmission equipment by using a wider bandwidth than the individual carriers. On reception, each carrier can be distinguished from the others by means of a specific modulation code, thereby allowing for the reception of signals that were originally overlapping in frequency and time. Thus, several transmissions can occur simultaneously within the same bandwidth, with the nutual interference reduced by the degree of orthogonality of the unique codes used in each transmission. Note 2 : CDMA permits a more uniform distribution of energy in the emitted bandwidth
 

Center frequency
A term describing the frequency at the center of the tuning range. This may differ from the nominal frequency in many designs
 

Clipped sine wave
An output voltage format achieved by driving the output circuit into clipping to achieve a rectangular wave form. Some applications use this format to reduce EMI in the product. However, this technique becomes less reliable as frequency increases and the rise/fall times may be too great at any frequency to make a useful clock oscillator for modern technology
 

Clock
A device for maintaining and displaying time. CMOS see HCMOS
 

COFA
COFA Change Of Frame Alignment
 

Control voltage
A voltage applied to control the frequency of VCXOs
 

Control voltage range
The range of voltage over which the tuning of the oscillator is valid
 

Coordinated Universal Time (UTC)
A coordinated time scale, maintained by the Bureau International des Poids et Mesures (BIPM), which forms the basis of a coordinated dissemination of standard frequencies and time signals. A UTC clock has the same rate as a Temps Atomique International (TAI) clock or international atomic time clock but differs by an integral number of seconds called leap seconds. The UTC scale is adjusted by the insertion or deletion of leap seconds to ensure approximate agreement with UT1
 

Coupling
Description of the connection between the oscillator and the external circuit. The choices are AC or DC