Ingress Gate Solution

IngressGate™ - Indoor Ingress suppression (patent p)

  • Cost-effective Patent P. technology for ingress suppression.
  • No need for expensive monitoring or useless detection.
  • Simple integration outdoor or indoor. 
  • Plug and play device.
  • Best performance in the market.
  • Drop amplifier integration.

Safecom's new IngressGate™ is a revolutionary cost-effective ingress suppression technology that enables CATV operators to increase upstream bandwidth and add advanced services with no interference .  Unlike standard solutions for ingress detection and monitoring, Safecom's patent-pending technology eliminates 70-90% of the ingress noise by addressing the source of the problem where most ingress noise is created - at the customer premises.

How it works?

Safeom's patent-pending 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 Ingress gate ™ (patent p) 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.

Ingress Gate drop amplifier.

Common Drop amplifiers (active return)

The average noise floor at customer houses -59dB (mV)

A: Typical drop amplifier NF is          + 6 dB

B: typical Amp gain-upstream          +10dB

C: ingress gate isolation is                -31dB

Results – Noise decrease less       -15 dB

Noise level *(calculated) =   -74dB ( mV)

* Floor noise

The average noise floor at customer houses -59dB (mV)

A: Typical drop amplifier NF is        + 6 dB

B: typical Amp gain-upstream         +10dB

Results – Noise increase almost +16 dB

Noise level (upstream)            –43dB (mV)

For improving system implementation and reducing cost integrated ingress protection drop amplifier enables the simplest way to resolve the ingress 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.

Upstream Ingress Protection with RF Active forward/return gain

Electric Performance- DOCSIS 3 READY 

Model

IGDA 10/10TA

IGDA15/10TA

Ingress Gate Parameter

Unit

Min value

Max value

Min value

Max value

Gate upstream level 4

dBmV

20

20

Gate upstream time

μs

1.5

1.5

Gate insert loss

dB

1.5

1.5

Gate switch isolation

dB

35

35

Forward (downstream) path

Frequency range

MHz

47/54/70/85

1000

47/54/70/85

1000

Gain

dB

10

14

Flatness

dB

1.0

1.0

Output level

dBμV

80

85

Noise figure

dB

4.0

4.0

Group delay

Front 1st chl

ns

25

25

2 nd chl

ns

10

10

From 3th chl

ns

5

5

CTB 

dBc

-73

-73

CSO

dBc

-62

-62

Cross modulation

dBc

-75

-75

Reverse (upstream) path

Frequency range

MHz

5

30/47/55/65

5

30/47/55/65

Gain

dB

10

10

Flatness

dB

1.0

1.0

Max output level

dBmV

60

60

Noise figure

dB

6.8

6.8

Group delay

5MHz

ns

20

20

Within band

ns

25

25

Middle

ns

5

5

2 nd Inter modulation

Reverse

dBc

-70

-70

Forward

dBmV

-40

-40

3 rd Inter modulation

Reverse

dBc

-60

-60

Forward

dBmV

-35

-35

Cross modulation

dBc

-75

-75

General performance

Resistance

Ohm

75

Return loss

dB

18

Hum modulation

dBc

-75

RFI shielding

dB

100

Surge withstand

RF input

IEEE C62.41 B3 6kV/300kA combo wave+A3 6kV/ ring wave

Other ports

IEEE C62.41 Category A36kV/ ring wave

Power consumption

mA

320

Waterproof

/cm 2

1

F port conductor Gold-plated, beryllium

360°pin structure push or pull force ≥ 8 Newton

Measurement

mm

85×75×23

Weight

g

350

 

  

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