Crystal Clock Oscillator

Wall Clock
Calendar Clock
Talking Analog and Multi
2817
T - Blue

Step movement (+/- 20 seconds per month accuracy)
Talking Time at Intervals of 15 mins
30 mins and 60 mins
Big Japanese Display showing Day
Date
Month
Year? and Temperature Function
Quartz Movement with Citizen Brand Crystal for Accurate Timing
Calendar Clock
1 year warranty

Step movement (+/- 20 seconds per month accuracy)
Big Japanese Display showing Day
Date
Month
Year and Temperature
Function. Quartz Movement with Citizen Brand Crystal for Accurate Timing
Calendar Clock
1 year warranty

Step movement (+/- 20 seconds per month accuracy)
Big Japanese Display showing Day
Date
Month
Year? and Temperature
Function. Quartz Movement with Citizen Brand Crystal for Accurate Timing
Calendar Clock
1 year warranty

Step movement (+/- 20 seconds per month accuracy)
Big Japanese Display showing Day
Date
Month
Year and Temperature
Function. Quartz Movement with Citizen Brand Crystal for Accurate Timing
Calendar Clock
1 year warranty

The ct-dz600a satellite synchronous clock (which is also a network time server) is developed with modular hardware design in a 1u chassis. It receives gps or bd satellite time source, supports multi-format outputs (ntp, sntp, irig-b, pulse, serial ), brings you a highly accurate, powerful and scalable time synchronization server widely used in telecom networks, communications, railway systems as well as power industry etc.

Functions
Stratum 1 operation via gps or bd satellite
Internal precision time-keeping via ocxo
3 optional module slots allow multi-format outputs (ntp/sntp, irig-b, pulse, serial)
Time delay compensation mechanism, compensation range: 20ns~500ms
1x 10/100m ethernet interface for management
Secure web-based management
Snmp simple network management supported


Features
Flexible modular design, easy for outputs configuration
Nanosecond time accuracy to utc
Excellent internal holdover performance when loss of time source
High-precision time synchronization satisfies enterprise class users
3 years limited warranty
Certified ce, rohs


Specifications
Time reference:gps l1 ?bd b1?bd &gps?glonass(optional)?galileo(optional)
OutputsNtp/sntpNetwork interface10/100m ethernet port, rj45
Network time protocols:Rfc-1059(ntp v1)rfc-1119(ntp v2)rfc-1305(ntp v3)rfc-5905(ntp v4)rfc-2030(sntp)
Ntp time sync accuracy:1ms~100ms(rely on the network environment)
Ntp access ability: 1000 requests per second
Time performance
Time accuracy to utc=100 ns (rms)
Holdover accuracy=40µs (after 1 hour) ; =90µs (after 2 hours)
(lose of gps after 30mins locked.)
Installation19?/ 1u rack mount

Ct-ddt200 series digital clocks
(ntp/irig-b/serial)
Ct-ddt200 series digital clock receives time signal from a master clock, supports ntp?irig-b and serial input, provides highly visible time displaying in public places like hospital, school, train station, airport and bank etc.


Key features
Multiple time signal inputs: ntp / irig-b / serial
Time synchronization accuracy = 10ms
High internal holdover accuracy when loss of time signal
High-brightness digital tube with bright and uniform color
Adjustable of light brightness, to satisfy different situation demands
Support ceiling suspending, wall hanging and embedded installation
Support yy:mm:dd, hh:mm:ss, week / temperature / humidity display
Display content, single or double screen, light color, size are all customizable

Functions
Stratum 1 operation via gps and/or bd satellite
Support multi-format inputs: ptp, irig-b, bits, 10mhz
Support multi-format outputs: ntp, ptp, irig-b, pulse, serial, bits, 10mhz
1x 10/100 base-t ethernet interface for management
Internal precision time-keeping via ocxo
Support automatic selection of valid time source
Support iec61850, iec60870-5-104 standard
Fault alarm functions for time source, board cards, power supply and so on.
Time delay compensation mechanism, compensation range: 20ns~500ms
Time continuity judgment mechanism to avoid output time discontinuity
Rigorous frequency calibration algorithm, to obtain high stable frequency holdover accuracy

Features
Flexible module card design, easy for outputs configuration
2 x internal frequency source are configurable, to ensure the internal time reliability and security
Support duplex, hot standby, cold standby configuration
Lcd display with man-machine interaction brings a simple operation
Adapt to the strong electromagnetic interference environments
Redundant dual power supplies
19’’ / 4u rack mount
Specifications
Time reference: Bd b1, gps l1, bd & gps
Inputs:Ptp, irig-b, bits, 10mhz
Outputs:Irig-bTtl?rs422/rs485?rs232?fiber?idle contact
Pulse(1pps/1ppm/1pph):Ttl?rs422/rs485?rs232?fiber?idle contact
Serial (tod)Rs232
Ntp/sntpRj45
Ptp over ethernetRj45
Ptp over e1Bnc
10mhzBnc
BitsBnc
Time performance:
Time accuracy to utc=100ns(rms)
Holdover accuracy=1µs/hr (after 24 hours locked)
Frequency accuracy=1e-12/day (after 24 hours tamed)
Frequency stability