Manufactory Wholesale Outdoor CATV Optical Node with Excellent AGC Performance for HFC Networks

Contact:Tomleequan

Email：sales@fmuser.com

whatsapp: +8613922702227

Manufactory Wholesale Outdoor CATV Optical Node with Excellent AGC Performance for HFC Networks Struggling with signal stability in harsh outdoor environments? The Outdoor CATV Optical Node delivers exceptional performance with its advanced GaAs amplifier technology and optimized circuit design. Designed for HFC networks, it ensures smooth photoelectric signal transmission and stable output levels even with input optical power ranging from -9 to +2dBm. Ideal for CATV systems, this node features microprocessor control, LCD parameter display, and a data communication interface for seamless network management.

• High response PIN photoelectric conversion tube | • GaAs amplifier for high gain and low distortion | • Excellent AGC performance | • Microprocessor control with LCD display | • Data communication interface for network management

This 1 GHZ 2 output outdoor optical node has Excellent AGC performance. The input optical power range is －9～＋2dBm.

Outdoor CATV Optical Node

Contact:Tomleequan

Email：sales@fmuser.com

whatsapp: +8613922702227

Contact:Tomleequan

Email：sales@fmuser.com

whatsapp: +8613922702227

SR1012ST is our latest high-grade two-output outdoor CATV optical node. The pre-amplifier adopts full-GaAs MMIC, and the post-amplifier adopts GaAs module. Optimized circuit design, coupled with our 10 years professional design experience, makes the equipment achieve good performance indexes.

Microprocessor control, digital display the parameters, the engineering debug is especially easy.

Performance Characteristics High response PIN photoelectric conversion tube.

Optimized circuit design, with SMT process production, optimized signal path, makes the photoelectric signal transmission more smooth.

Specialized RF attenuation chip, with good RF attenuation and equilibrium linear, high accuracy.

GaAs amplifier device, power doubler output, with high gain and low distortion.

Single Chip Microcomputer (SCM) control equipment working, LCD display the parameters, convenience and intuitive operation, and stable performance.

Contact:Tomleequan

Email：sales@fmuser.com

whatsapp: +8613922702227

Contact:Tomleequan

Email：sales@fmuser.com

whatsapp: +8613922702227

Excellent AGC performance, when the input optical power range is －9～＋2dBm, the output level keep unchanged, CTB and CSO basically unchanged.

Reserved data communication interface, can connect with the Ethernet transponder, access to network management system.

Return emission can select burst mode to sharply decrease the noise convergence and reduce the forepart receiver number.

Technique Parameter

Item Unit Forward optical receiving part Optical Parameters Receiving Optical Power dBm Optical Return Loss dB Optical Receiving nm Wavelength

Outdoor CATV optical node

-9 ~ +2 >45 1100 ~ 1600 FC/APC, SC/APC or specified by the user Single Mode

Optical Connector Type Fiber Type Link Performance C/N C/CTB

dB dB

≥ 51 (-2dBm input) ≥ 65 Output Level 108dBμV

C/CSO

dB

≥ 60

RF Parameters Frequency Range Flatness in Band Rated Output Level Max Output Level

MHz dB dBμV dBμV

Output Return Loss

dB

45 ~862 45 ~1000 ±0.75 ±0.75 ≥ 108 ≥ 108 ≥ 114 ≥ 112 (45 ~550MHz)≥16/(550~1000MHz)≥14 75 75

Output Impedance Ω Electronic Control EQ dB Range Electronic Control ATT dB Range Return Optical Emission Part Optical Parameters Optical Transmit nm Wavelength Output Optical Power mW Contact:Tomleequan

EQ 6dB

0～15

0～15

0～20

0～20

1310±10, 1550±10 or specified by the user 0.5, 1, 2 Email：sales@fmuser.com

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Contact:Tomleequan

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FC/APC, SC/APC or specified by the user

Optical Connector Type RF Parameters Frequency Range Flatness in Band Input Level Output Impedance

MHz dB dBμV Ω

NPR Dynamic Range

dB

5 ~ 65 (or specified by the user) ±1 72 ~ 85 75 ≥15 (NPR≥30 ≥10 (NPR≥30 dB) dB) Use DFB laser

Use FP laser

General Performance Supply Voltage Operating Temperature Storage Temperature Relative Humidity Consumption

V ℃ ℃ % VA

A: AC (150~265)V; B: AC (35~90)V -40~60 -40~65 Max 95% no condensation ≤ 22

Dimension

mm

260（L）* 200（W）* 130（H）

Common Failure Analysis and Troubleshooting

Failure phenomenon Failure cause

Solution

After connecting the 1. The input optical power of 1. Check the input optical power and the make network, the image o f the optical receiver is too high, appropriate adjustments to make it in make the the optical contact point has output level of the optical specified range; or adjust the receiver attenuation of obvious netlike curve or module too high and RF signal optical receiver to reduce the output index level and large particles highlig hts deteriorate. improve index. but the image backg 2. The RF signal (input the Contact:Tomleequan

2. Check the front end machine room

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round

optical

optical

is clean.

transmitter) index is poor.

transmitter RF signal index and make appropriate adjustments.

1. Check the received optical power of the optical contact point and make appropriate

1. The input optical power of the

adjustments to make it in the specified range.

optical receiver is not high enough,

2. Recover the received optical power of the

results in the decrease of C/N. optical contact point by cleaning the optical 2. The optical fiber active fiber connector or adapter etc connector After connecting the methods. or adapter of the optical network, the image of receiver has Specific operation methods see the “Clean and been polluted. optical contact point maintenance method of the optical has 3. The RF signal level input the fiber obvious noises.

optical transmitter is too low, make

active connector”.

3. Check the RF signal level input the modulation degree of the laser optical is not transmitter and adjust to the required enough. input 4. The C/N index of system link range. (When the input channels number less signal is too low. than 15, should higher than nominal value.)

4. Use a spectrum analyzer to check the Contact:Tomleequan

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whatsapp: +8613922702227

system link C/N and make appropriate adjustments. Make sure the system link signal C/N﹥51dB.

1. Check if there is strong interference signal source; change the optical contact point location if possible to avoid the influence of After connecting the strong interference signal source. network, the images 2. Check the cable lines of the optical of The optical contact point has contact open several optical contact points randomly appear obvious noises or bright

point, if there is shielding net or circuit signal interference or s situation that trong interference signal intrusion.

the RF connector shielding effect is not good.

3. Tightly closed the equipment enclosure to

traces.

ensure the shielding effect; if possible add shielding cover to the optical contact point and reliable grounding.

After connecting the Power supply AC ripple network, the images interference

Check grounding situation of the equipment,

of

make sure that every equipment in the

because of the bad earth of Contact:Tomleequan

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whatsapp: +8613922702227

Contact:Tomleequan

Email：sales@fmuser.com

whatsapp: +8613922702227

several optical contact equipment

line

points appear one or or power supply. two

has been reliably grounding and the grounding resistance is﹤4Ω.

horizontal bright traces.

After connecting the

1. Check the type of optical fiber active network, the received The optical fiber active connector connector and adopt the APC type optical power of the optical types do not match, maybe the optical APC fiber active connector to ensure the contact point is unstable type connect to PC type, make normal the transmission of optical signal. and has large continuous optical signal cannot normal 2. Clean the polluted optical fiber change. The output RF

active

transmission.

The optical fiber active signal is unstable, too. connector or But adapter may be polluted the detected output seriously or optical the adapter has been power of the optical damaged.

connector or adapter. Specific operation methods see “Clean and maintenance method of the optical fiber active connector”.

3. Replace the damaged adapter.

transmitter is normal.

Contact:Tomleequan

Email：sales@fmuser.com

whatsapp: +8613922702227

Contact:Tomleequan

Email：sales@fmuser.com

whatsapp: +8613922702227

Contact:Tomleequan

Email：sales@fmuser.com

whatsapp: +8613922702227

Contact:Tomleequan

Email：sales@fmuser.com

whatsapp: +8613922702227

About Us FMUSER is a company specializing in broadcasting and television transmission systems and integrating hotel IPTV systems. The company was established in 2009 and has served over 180 countries worldwide. More than 20,000 television stations, radio stations, and hotel clients from different.

Contact:Tomleequan

Email:sales@fmuser.com

Contact:Tomleequan

whatsapp:+8613922702227

Email：sales@fmuser.com

whatsapp: +8613922702227