Products include OCXO, MCXO, TCXO and VCXO that meet GR-1244-Core.002 standards(Class: 2,3E and 3). These products have been used in several markets such as telecommunications, aerospace, industrial, medical, navigation, test and measurement, and instrumentation systems.
We work closely with customers and take part in the system design to meet their specific application requirements, such as low phase noise, high stability, high shock and vibration, low g-sensitivity, low jitter and extended temperature range.
Oven-controlled Crystal Oscillator.
It has much better temperature Characteristics. The internal Crystal unit operates in a constant ambient temperature by a thermostatic oven.
Temperature compensated crystal oscillator
It is a crystal oscillator with a temperature-sensitive reactance circuit in its oscillation loop to compensate the frequency-temperature characteristics inherent to the crystal unit.
DAPU has a wide range of high stability Temperature TCXOs.
Microcomputer Compensated Crystal Oscillator（belongs to TCXO）
It uses microprocessor to provide high processing capabilitites to provide very efficient compensation.
Voltage Control Crystal Oscillator
VCXO has variable capacitance diodes inserted in series with a Crystal unit, and the capacitance of the diodes are changed by the application of an external voltage which causes the Oscillator to develop frequency variations.
Crystal oscillator is an active device which integrates crystal and oscillator circuit directly.
It includes single-ended crystal oscillator and differential crystal oscillator.
The clock module can achieve the performance of atomic clock based on DAPU's algorithm (over temperature and aging) and DAPU's high performance OCXO. Dapu can provide a variety of the synchronous and holdover clock module, to meet the different demands .
High holdover performance: 1.5US for 24 hours
DAPU has independently developed high-precision time-frequency technology, which perfectly combines the long-term stability of the satellite with the medium-term and short-term stability of local clock. The clock equipment can provide excellent performance of frequency and time reference, meeting PRC/PRTC. The equipment adopts standardized mechanical design to meet the different industries' application.
IEEE® 1588 Precise Time Protocol (PTP)
Network Time Protocol (NTP)
DP3000 is a high-performance GrandMaster(PTC/PRTC) and BC device which supports GPS/BD and IEEE1588v2. Frequency accuracy:±1.0E-12; time accuracy:±30ns; Holdover performance:±1.5us/24H@±10°C