Detailed Product Description

The DMB-3018 GPS Synchronization Clock Generator is the key equipment for exciter and SFN Adaptor in SFN network, which provides the GPS synchronized 1 PPS and 10MHz clock for Exciter and SFN Adaptor. The DMB-3018 adopts smart predictive algorithm combined with excellent short time stability of the OXCO oscillator to mitigate the effects of inherent GPS noise. And it also complies to the stringent hold over mode requirements of DVB-T/H and GB20600 standards when GPS reference is lost. The DMB-3018 is the best choice of terrestrial digital television operators.

Main features

High performances GPS receiver to receive up to 12 simultaneous satellites

the OXCO oscillator to keep frequency and time accuracy

Generate 1 pps + 10 MHz High Accuracy-High stability signals for SFN applications

Continuous high precision output without GPS signals

Compatible with any SFN MIP inserter

Near rubidium stability incase of loss of satellite signals

Web browser remote control, SNMP is optional

SPECIFICATION

Input signal

Connector         GPS Antenna with TNC connector

Output signal

4  10 MHz standard sine wave, range 10dBm

4  1pps, TTL level

Connector: 50ohm, BNC

Output

10MHzOutput      4 output Connectors

Connector: 50ohm BNC

Accuracy (average over 24 hours when GPS locked) <2E-12

Medium term stability (without GPS) <3E-10

Short term stability:100 ms         <5E-11

                             100ms-1s     <1E-11

                             10s              <3E-11

Phase noise:          10Hz            <-120dBc/Hz

                             100Hz           <-145dBc/Hz

                             1kHz             <-155dBc/Hz

Signal wave form:  10MHz,           sinewave/50ohm

1PPS Output<50ns  

Accuracy to UTC, GPS locked: 50ns

Hold over mode after 4 hours:1us

Hold over mode after1day:16us

Signal waveform and level:1pps TTL / 5ohm

Attenuation:0 to 10 dB in 0.1 dB step

OCXO

2E-10

Power

Voltage                                AC 90~260V

Frequency                           50~60Hz

Consumption                       Max. 30W

Mechanical Parameter

Operational temperature        0~45^oC

Storage temperature             -20~70^oC

Humidity                             10%-95%

Dimension                           318mm(W)×483(L)mm×44mm(H)

Weight                                6 kg