Features

• Aluminum-alloy casing with IP65 protection has high resistance to dust, water and corroding;
• Omni-directional coverage antenna can be adopted for 360-degree coverage;
• Digital TV signal and control/alarm messages can be transmitted via one fiber optic cable;
• Stable and improved signal transmission quality;
• One Donor Unit can support up to 8 Remote Units to maximize utilization of fiber optic cable;
• Support both star topology and cascaded topology;
• RS-232 ports provide links to a notebook for local supervision and to the built-in wireless modem to communicate with the NMS (Network Management System) that can remotely supervise repeater’s working status and download operational parameters to the repeater.

Application

To expand signal coverage or fill signal blind area where digital TV signal is weak or unavailable.

• Outdoor: Airports, tourism regions, golf courses, tunnels, factories, mining districts, villages, highways…
• Indoor: Hotels, exhibition centers, basements, shopping malls, offices, parking lots, …

The DTV FOR is mainly applicable to such case:

• Underground fiber optic cable network already exists beneath the area to be covered;
• There is huge obstructive terrain between the DTV transmitter and the area to be covered;
• The distance between the DTV transmitter and the area to be covered is 20 km around.

In comparison with RFR (RF repeater) and FSR (frequency shift repeater), the FOR has the following benefits and disadvantages:

Pro	Con
No more self-oscillation and easy to choose installation location; Pure DTV signal picked up by the Donor Unit will greatly reduce the signal noise; The Remote Unit can be installed out of the DTV transmitter coverage; A full 360-degree coverage can be realized; No need to occupy additional frequency resource.	The total cost of equipment is higher; A fiber optical connection between the Donor Unit and Remote Unit is required.

Specifications

		DTV Fiber Optic Repeater
Working Frequency (customizable)		167~223MHz / 470~862MHz
Bandwidth of Each Channel		8MHz
Transmission Distance		≤ 20km
Output Power (customizable)		40~43 dBm (10~20 W)
Gain		≥ 65dB
Gain Adjustment Range		1~31dB @ step of 1dB
Frequency Error		≤ 0.05ppm
ALC (Automatic Level Control)		@ maximum output power: input signal level increases by 10dB, increase of output level will be < 2dB or closed
MER (Modulation Error Rate)		≤ 0.8dB and variation < 1dB @ 10dB compression
BER (Bit Error Rate)		Degradation ≤ 1*10-2
Voltage Standing Wave Ratio (VSWR)		≤ 1.5
Max. Input Level		+10dBm
Spurious Emission		≤ -36dBm
Shoulder Level	Per Channel	±4MHz offset from central frequency: ≤ -36dBc/30kHz
	Per Band	Offset from edge of working band ≥ 8MHz: ≤ -40dBc or ≤ -13dBm/30kHz
		Offset from edge of working band ≥ 16MHz: ≤ -60dBc or ≤ -33dBm/30kHz
In-Band Intermodulation Attenuation		≤ -40dBc/30kHz
System Delay		≤ 5.0μSec
I/O Impedance		50Ω
Fiber Optic Light Source		Laser unit (wavelength: 1310nm / 1550nm)
Optical Output Power		≥ 0dBm (1310nm) / ≥ 3dBm (1550nm)
Optical Receiver Sensitivity		≤ -15dBm
RF Connector		N-Type (Female)
Temperature Range		Operation: -25°C ~ +55°C / Storage: -30°C ~ +60°C
Relative Humidity Range		≤ 95% (non condensing)
Power Supply (customizable)		DC +24V / DC -48V / AC 220V±15%, 50Hz / AC 110V±15%, 50Hz
Backup Power Supply (optional)		4 hours
Casing Level		Donor Unit: -- / Remote Unit: IP65
Dimensions		Donor Unit: 418mm X 90mm X 290mm Remote Unit: 630mm X 400mm X 230mm
Weight		Donor Unit: 6kg / Remote Unit: 35kg
Remote Monitoring/Control via NMS		Supported