Recently, our company has producedCDMA clock successfully put into operation at China Resources Cement (Luchuan) Co., Ltd

Developed by Shanghai Ruicheng Electric Co., LtdCDMAclockIt is a high-tech intelligent, independently working basedNTP/SNTPProtocol time server, built-in in the productCMDASignal receiver as a time signal source,No need to buy a card,No payment required,as long asCDMAThe signal can be used in any location, as there is no need to install outdoor satellite receiving antennas, which avoids damage to equipment caused by lightning strikes.CDMAThe network operation requires high-precision time synchronization, which can provide reliable time accuracy guarantee. The time source of Ruicheng products comes fromCMDADevices in the network that require time signals, such as computers and controllers, can synchronize with standard clock signals. Standard clock information is transmitted throughTCP/IPNetwork transmission, Ruicheng products support multiple time release protocols, such asNTP,time/UDP,It can also support customizable settingsUDPThe time broadcast packet of the port's sharp presentation.NTPandtime/UDPThe port numbers are fixed atRFC-123andRFC-37specified123and37.

CDMAclockThe basic principle of

1．CDMASignal receiver: This receiver is used to receiveCDMACoordinated Universal Time (UTC) transmitted by base stations（UTC）The signal serves as an external time reference signal. The output time accuracy is3mSof1PPS(namely1Pulse Per Second)Pulse and pass throughRS232Serial port outputs standard time, date, and other information.

2Pulse circuit: Output seconds through front panel programming(1PPSThat is1 Pulse Per Second), minutes(1PPMThat is1 Pulse Per Minute), hour(1PPHThat is1 Pulse Per Hour )Waiting for controllable synchronous pulse signals. Pulses can be active and optically isolatedTTLLevel422Output in the form of voltage level or static idle contact.

3Central processing unit: monitors and processes the entire system.

4Digital display and keyboard control: Time information and other status information are displayed on the front panel, and human-computer interaction and setting values are performed through the keyboard interface.

5．RS-232/422/485Interface: Output configurable local time Date and other information, with optional baud rate.

6．IRIG-BGenerate and output interface: Generate and outputIRIG-B（AC）TheIRIG-B（TTL）TheIRIG-B（422）TheIRIG-B（232）Signal.

7．DCF77Generation and output interface: output active or passiveDCF77Signal.

8Network timing interface: toRJ45Oral form outputNTP/SNTPNetwork timing signal.