Repeater Compositions / ISDB-T Digital TV Broadcasting Relay Systems

Product code: 3275DV

Outline

This equipment is a distributor to distribute a standard signal. The circuit that is 10 distribution of 10MHz reference frequency and the circuit that is 5 distribution of one second pulse (1PPS) are built into by 2 methods.

Structure

Main body
External size: 480(W) x 99(H) x 350(D)mm (Including Fan unit. Excluding protrusions.)
Mass: 7.0kg or less

Specification

10MHz input (2 methods)	Number	1
	Level	0dBm±3dB
	Connector	BNC-J
	Impedance	50Ω
1PPS input (2 methods)	Number	1
	Level	VIL:0 to 0.8V, VIH:2.0 to 5.0V
	Connector	BNC-J
	Impedance	50Ω
10MHz output (2 methods)	Number	Back panel:10, Front panel: monitor 1
	Level	Input level±1dB
	Connector	BNC-J
	Impedance	50Ω
1PPS output (2 methods)	Number	Back panel: 5, Front panel: monitor 1
	Level	VOL:0 to 0.4V, VOH:2.4 to 5.0V
	Connector	BNC-J
	Impedance	50Ω(The pull-down at the terminal. The pull-up is improper.)
Power supply		DC+48V±15% or less 2 methods
Power consumption		20 W or less
Use conditions		Continuous use
Environmental requirements	Temperature	-10°C to +45°C (Range for in-spec)
		-20°C to +60°C (Range for spec restorable)
	Humidity	45% to 90%RH  (Without dew.)

Performance

10MHz output level stability		±1dB or less
1PPS pulse delay time		50ns or less
Alarm Monitoring Item	Power failure	The DC power supply input in two methods is observed after the diode synthesizing, and warning is output when the voltage decreases to +36V or less.
	10MHz inputLevel down	The level decrease in 10MHz input in two methods is independently observed, and warning is output when decreasing to -4dBm or less.
	1PPS pulseInput detect	Warning is output when the 1PPS pulse input cannot be detected as TTL level (VIL:0.8V or more, VIH:2.0V or less).
	1PPS pulseLevel down	Warning is output when any 1PPS pulse output without monitor output cannot be detected as TTL level (VIL:0.8V or more, VIH:2.0V or less).