Specifications

2 inputs optical receiver
optic AGC
114dBuV output level
LED indicator
SNMP

Brief

TFR78000 is an optical receiver designed to meet the requirements of modern HFC networks, it is equipped with two optical receivers which allow redundancy for forward path.

Adjustment of the optical receiver TFR78000 has been simplified due to its microprocessor control unit that enables uninterruptible adjustment (AGC,slope,gain,etc.), what is extremely important especially for modern services. This solution allows to reduce costs of network maintenance, eliminate the necessity of plug-in modules stock and simplify installation and adjustment of the device.

TFR78000 is equipped with Ethernet Communication Module (ECM), which enables remote monitoring and control of particular receiver parameters. It enables to monitoring and manage status of AGC settings, slope and level adjustment. Additionally it’s possible to monitor optical power of the receiver. The AGC circuit compensates changes in the optical power providing stable RF output level regardless of input signal fluctuations. Integrated LED display helps in installation and network diagnostic, shows optical input power level, RF output level eliminating the need for additional measuring equipment for technical staff.

TFR78000 ptical optical receiver power range is at 2~ -8dBm. When receiver input power at 0dBm, and dual outputs, each RF output level up to 110dBuV; single output level up to 114dBuV; when optical receiver power at -5dBm, C/N > 49dB.

~220V power-supply modes is available, the high-performance transforms circuit become + 24V, + 9V straight to optical receiver internal devices.

 

 

Feature

l  Perfect surge suppression circuit, improved the anti-thunder stroke and surge impact prevention ability

l  The input stage adopt imported low noise GaAs amplifier, the output stage adopt imported CATV GaAs high performance module, improved C/N and the non-line distortion characteristic greatly, simultaneously reduced the power consumption

l  Strict reliability test, MTBF is longer than 100,000 hours

l  Excellent optic detector: responsibility > 0.9 A/W, light alarm instructions when input power too low

l  RF output level and slope are adjustable. Output port 1-2 are available, tap/split are available.

l  Reserve international standard network interface, easy to field upgrade

l  Optical AGC function,the output level changed within ±0.5dB, while input power changed at +1dBm~-6dBm

l  Open network management to meet the national standard, comply with SCTE HMS and IEC network management standard.

 

  Overview Diagram

 

 

Technique Parameter

Project		Unit	Performance	note
Optic	wavelength	nm	1290~1560
	Opticalconnectors		FC/APC or SC/APC
	Input power range	dBm	2~-8
	AGC range	dBm	1~-6
	Input power indicate voltage	mW/V	1.0±10%
RF	Frequency range	MHz	47~860
	Flatness	dB	±0.75
	RF ports number		1~2
	Standard output power(at input power 1~ -6dBm)	dBuV	114	Single output
			110	Double output
	Impedance	Ω	75
	Gain adjusting range	dB	0~20	1dB step
	Slope adjusting range *	dB	0~15	1dB step
	Output return loss	dB	>16dB	860MHz bandwidth range
Link (note)	C/N	dB	>46	Optical receiver power at-6dBm,single output power at 110dBuV
	CTB	dBc	>66
	CSO	dBc	>62
General	voltage	Vac	220
	Power Consumption	VA	<14
	working temperature	°C	-25~+55
	Storage temperature	°C	-25~+65
	Weight	Kg	3.0
note:load 59 PAL-D analog signal and 35 IPQAM digital modulation signal, and the level is lower 10dB than analog carrier