Optical Receiver

Bidirectional HFC Broadband Transmission Optical Receiver

Item No.: RTOR-6604

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DESCRIPTION

RTOR-6604 The standard optical workstation is configured as two bidirectional outputs with a standard output level that is equal to and larger than 108dBmV (-3dBm @optical power input).

What’s more, with its waterproof cast aluminum shell inner tank design is adopted for shell, being suitable for field work. Various options and accessories can meet the various functional

requirements. Working voltage 60 V, AC operating voltage 35 V~90 VAC, and it can be set to one-way or two-way working mode.

Functional Characteristics

* 5-1000MHz two-way platform design

* External programmed bidirectional filter with multiple frequency split points optional,plug-and-play

* The adjustment of balance and tilt is realized by adopting fixed attenuator, which is convenient for users.

* Import receiving module equipped with import amplifier module, high index, good reliability.

* External plug-in program-type back-transmission light emitting element to achieve network upgrade.

* Directional coupler is adopted for both upperlink and downlink test ports (-20 dB) to ensure accuracy.

* Optical power monitoring and low power alarm indication are set.

* High efficiency switching power supply is used in the .The voltage adaptation range is wide.

Downstream Optical Specification
No.	Item	Technical parameters		Remarks
1	Receiver optical wavelength	1290-1600nm
2	Input light reflection loss	>45dB		4.3 of SJ/T10663-1995
3	Photoelectric module response	0.85A/W(1310nm typ value)
4	Maximum input optical power	2mW（3dBm）
5	Receiving optical power	-7~+3dBm		Recommended using scope: -3~0dBm
6	Type of optical fiber	Single mode (9/125mm)
7	Type of optical fiber connector	FC/APC or SC/APC
8	Receiving optical power monitoring voltage	1V/mW
9	Equivalent noise input current	≦8PA/ÖHz		4.21 of SJ/T10663-1995
Downstream RF Specification
No.	Item	Technical parameters		Remarks
1	Frequency bandwidth	105 -1000MHz		Customization accepted
2	Flatness in RF band	±0.75dB(fH-1000MHz)
3	RF reflection loss	³16 dB (fH-550MHz)
		³14 dB (550MHz-1000MHz)
4	Frequency band Segment (fL/fH)	30/46MHz，40/52MHz，42/54MHz，55/70MHz，65/87MHz, 85/105 MHz
5	Nominal output level	³108dBmV±1dB		-3 to-10dBm
6	AGC range	-3 to -10dBm
7	System link indicator	C/N³48dB		*
		C/CTB≥65dB
		C/CSO≥60dB
8	Test port level	-20dB		Relative to main output
9	Gain adjustment range	1 dB Stepping external procedure		Exfactory 0dB
10	Pre-inclined quantity	1 dB step-out procedure		Exfactory 0dB
11	RF output connection	F-type joint or 5/8²,24 tooth through head
12	AC supply voltage	~60V(35-90VAC)
13	Overcurrent capacity	10A		Maximum over current
14	Maximum power consumption	≤40W
Note: the link index of the system is : transmit digital modulation signals in the range of 59 TV channels TV channel and 550~862 MHz frequency in the PAL-D signal input.The digital modulation signal level (within 8 MHz bandwidth) is 10 dB lower than the analog signal carrier level. Standard optical transmitters is to be adopted to be measured under -3 dBm optical power reception (10 km optical fiber loss+ optical attenuator loss), 108 dBmV output 10 dB tilt.
Upstream Optical/RF Specification
No.	Item	Technical parameters			Remarks
1	Frequency bandwidth	20-85MHz
2	Flatness in RF band	±1dB(5- fL MHz)
3	RF reflection loss	³16 dB (5- fL MHz)
4	RF total input power	75-85dBmV
5	Hybrid amplifier gain	34dB
6	Total input power of the laser	98 dBmV			The level of test port is 78 dBmV.
7	Output optical power	³-3dBm
8	Uplink output optical power	1mW or 2mW
9	Output optical power stability	±1.5dB
10	The type of uplink laser	FP or DFB
11	The optical wavelength of uplink laser	1610nm±20
12	Noise Power Ratio （NPR） Dynamic range	DFB（2mW）	FP(1mW/2mW)
		³15 （NPR³30 dB）	³10 （NPR³30 dB）