Home Amplifier + 28dB upstream noise blocker

Essential key element of CMTS-CABLE Modem Synchronization

Solving the “Funneling Effect” at HFC & RFoG networks.

Innovative Home amplifier with upstream 28dB RF Noise Blocker (US PATENT ), that allows carrier signals from customer premises into the network only when the home devices are actively transmitting.  

DOCSIS 3 Approved    

Safecom's new IGDA is a revolutionary cost-effective next generation CATV home Amplifier with 28dB Upstream Noise Blocker  based on the patented IngressGate™ technology that enables CATV operators to optimize the upstream bandwidth and add advanced services with no interference by eliminate the RF and ingress noises reside in the upstream path.  Unlike standard solutions for ingress detection and monitoring, Safecom's  Patented technology eliminates 90-99.9% of the upstream ingress noise by addressing the source of the problem where most ingress noise is created while providing the amplified signal - at the customer premises.

How does it work?

Safecom's IngressGate™ technology is based on the burst nature of the return path and the random presence of ingress noise. The technology functions as a upstream gateway that allows carrier signals from customer premises into the network only when the home devices are actively transmitting. This mode of operation eliminates most of the ingress noise without any adverse effect on the upstream and downstream signals.  Safecom's IngressGate™ technology supports DOCSIS 3.0 + that requires switching speed faster than 1.6  μS  and ensures the most reliable and cost effecting solution for upstream ingress noise.

Conclusion:

Blocking upstream noise on the RFoG & HFC network using Safecom's noise blocker will allow designers to reach highest performances before expensive upgrading and installing special fiber optics components.

  • Upstream RF & ingress Noise reduction by > 28dB.

  • Without RF switch or relay.

  • Response time < 1 m sec. (Docsis 3 & Docsis 2)

  • No impact of an active return transmission.

  • Life time operation.

  • Eliminates the use of filters or other expensive ingress protection components.

  • Lowering the noise floor.

  • Plug and play device.

  • No need for expensive monitoring or useless detection.

  • Simple integration outdoor or indoor.

  • Without any RF or Mechanical switch.

  • Best performance in the market.

INGRESS GATE Technology : Open upstream only when Modem transmitting

 Home Ingress detection and 6dB attenuation

 Frequency Division

 Upstream path to ON, OFF, or

6 dB attenuation

 Technology

Very Low

Med

High

Med

Cost

No

Yes

Yes

Yes

Needs ingress detection system

Home (by customer or technician )

Home pass/ Network

Network

Network

Installation

No RF disconnections during installation.

Disconnect RF signal to large area during installation.

Disconnect RF signal to large area during installation.

Disconnect RF signal to large area during installation.

Broadcast continues during installation.

 

IngressGate™ Solution

Opposite Phase concept.

 

Operates as upstream gate that opens only when the modem transmits.

Opposite phase merging.

Technology

Full

28 dB ingress isolation.

Partial

0- 6 dB only ingress reduction.

Effectiveness

INGRESS GATE -CABLE Modem Synchronization 

Assumes ingress noises are at the same phase or from the same source.

Operating

principle.

Solves and blocks all upstream RF noise from customer premises by 28dB.  

Cannot solve ingress problems from customer premises.

Solution

 

 

Electric Performance- DOCSIS 3 Approved         

IGDA 1510 /  TA,TE,MA  1-output  Drop Amplifier & upstream noise blocker (All in One)   

Parameter

Unit

Min value

Typical value

Max value

Forward (Downstream) path

Frequency range

MHz

70

1000

Gain

dB

14

Flatness

dB

±0.75

±1.0

Return loss

dB

16

18

Output level 1

dBmV

25

Noise figure

dB

3.5

4

Group delay

Channel 2

ns

25

Channel 3

ns

10

After CH5

ns

5

CTB 1

dBc

-73

CSO 1

dBc

-62

Xmod1

dBc

-70

HUM

dBc

-70

Reverse (Upstream) path

Frequency range

MHz

5

55

UpstreamNoise Isolation

>28

Gain

dB

10

Flatness

dB

±0.5

±0.75

R/L RF OUT

Upstream“ON”

dB

16

>18

R/L RF IN

Upstream “ON”

>18

R/L RF OUT

Upstream “OFF”

Modem not Active

dB

>8

Upstream Blocked

Noise figure MODEMActive

dB

6.5

7

Group delay

5-42MHz

ns

20

10-36MHz

ns

5

2nd Inter modulation 2

dBc

>60

3rdInter modulation 2

dBc

>57

Thresholdlevel 3

dBuV

75±1

Operating time

ns

1000

INGRESS GATE Display

LED ON when upstream ON

1.Input flat 10dBmV77 chennels/6MHz

2.Input 2 un modulated series carriers @ 27, 33MHz, out level 58dBmV.

3.One un-modulation carrier wave.

Ingress Gate Drop Amplifier ordering info.

 
 
  

For improving system implementation and reducing cost integrated ingress protection drop amplifier enables the simplest way to resolve the upstrream RF & ingress noise problems while at the same time saving the need for additional common drop amplifiers. Safecom offer range of Ingress gate solutions with or /without RF gain at the upstream /downstream.

 

 

 

 

  

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