45-862MHz 4 Outputs Outdoor Bidirectional CATV Optical Receiver with AGC Control

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Overview
Quick Details
Place of Origin:
Zhejiang, China
Brand Name:
Snow-Sea
Model Number:
CATV Optical Receiver
Operating wavelength range:
1540~1563 nm
Input optic power:
-6~+2 dBm
Optic power detection:
10V/mW
Optic connector type:
SC/APC (option SC/UPC)
Optic return loss:
≥40 dB
RF return loss:
≥16 dB (47-550MHz) ≥14 dB (550-750MHz)
In-band flstness:
±0.75 dB(47~750MHz)
Voltage:
A: 220V±10%; B: 30~60VAC
DC comsumption voltage:
0.8A/24V
Signal AC ratio:
66dB
Supply Ability
Supply Ability:
200 Piece/Pieces per Week
Packaging & Delivery
Packaging Details
Export Carton Packing
Port
Ningbo

HFC 45-862MHz 4 Outputs Outdoor Bidirectional CATV Optical Receiver with AGC Control

Main difference between 9924 and the normal receiver

The receivers in the current market have the following problems:

Without bi-directional function

Frequency division is not changeable

Forward bandwidth cannot be widened

9924 is designed with the purpose of solving these problems, as a HFC bi-directional communication platform, all the components are plug-in type, it can be configured and upgraded flexibly according to the development of network.

 

Main function and features of 9924

Aluminum-casting housing, surface passivation, waterproof, heat-dispersing, electric conduction, antisepticising.

Flexible: (configurable, upgradeable)

HFC bi-directional communication platform, all the components are plug-in type; it can be configured and upgraded flexibly according to the development of network.

Function is configurable:

Uni-directional

Bi-directional

Frequency division is changeable:

Duplex filter, adopting mini plug-in component, a few kinds of filters are optional. Users can change uni-directional into bi-directional, low frequency division into high frequency division by filter.

In uni-directional network, choose 9940208/0 (47-862MHz).

In bi-directional network, choose:

9940207/0 (5-35/47-750MHz) (keep 1CH)

9940207 (5-42/53-750MHz) (no keep 1CH)

9940208 (5-65/87-860MHz) (high division)

Bandwidth can be widened:

9924 is designed as 1GHz passive platform, both the forward splitter and distributors are plug-in structure, with the development of integrated circuit technology, user can change the amplifier module to change 550MHz into 750MHz, 751MHz into 860MHz (or higher).

 

Maintainable:

With perfect operating select display and test port.

Each RF output level has -30dB test port.

Each RF return input level has -30dB test port.

Forward receiving, with 10V/mW optic power detect, <-8dBm power lacking alarm.

Return path transmitter module, with 10V/mW power and 0.01V/mA bias current, <0.5 dBm power lacking alarm, -20dB RF input level test port.

 

Convenient to install and adjust:

Each RF output level, slope can be adjusted separately.

Each RF return input level can be adjusted separately.

Input of Return path transmitter module can be adjusted separately.

 

Main functional components of 9924

9920216       Return path optic transmitter module, adopting FP laser, 1~2mW, transmit 1~2 video

9920217       Return path optic transmitter module, adopting un-cooled DFB laser, 2mW, transmit 2~4 video

9920218       Return path optic transmitter module, adopting un-cooled DFB laser, 4mW, transmit 2~4 video

FLT-35/47    duplex filter 5-35/47-750MHz

FLT-42/53    duplex filter 5-42/53-750MHz

FLT-65/87    duplex filter 5-65/87-862MHz

Z112             -12dB splitter plug-in component

D204            two distribution plug-in component

AT                fixed attenuator plug-in component

ATT                     0~15dB adjustable attenuator plug-in component

EQT                    adjustable equalizer plug-in component


Select detecting

TP1: receiving power detect. With power meter DC 20V, can test TP1 grounding voltage, each 1V DC is 0.1mW (10V/mW), accuracy±5%.

TP2: output 1#level -30dB detect

TP3: output 2#level -30dB detect

TP4: output 1#return path level-20dB detect

TP5: output 2#return path level-20dB detect

TP6: return path transmitter module input level -20dB detect

 

Select display and alarming

Power-lacking alarm (RX-LOW): if receiving power is too low (default value is -8dBm) display Red. If receiving power is normal (>-8dBm), display Green.

Power select display (POWER): Normal is Green.

 

Main performance index of 9924

Item

Out-door

Output port

(main/sub)

2/2

4/0

Forward bandwidth

(MHz)

47~750, 53-750, 87-862

Reverse bandwidth

(MHz)

5~35, 5-42, 5-65

Wavelength

(nm)

1310/1550

Equivalent noise current

()

7

Input optic power

(dBm)

-6~+2

Optic power detection    

(mW/V)

10V/mW

Optic connector type

 

SC/APC (option SC/UPC)

Optic return loss

(dB)

≥40

RF return loss

(dB)

≥16 (47-550MHz) ≥14 (550-750MHz)

In-band flstness

(dB)

±0.75dB(47~750MHz)

Interstep gain adjustment

(dB)

ADJ adjustable plug-in component: 0~18dB;

ATT fixed plug-in component: 0~21dB

Interstep slope adjustment

(dB)

EQT adjustable fixed plug-in component: 0~18dB;

EQ fixed plug-in component: 0~21dB

Fixed

Level

distortion

Typical power

(dBm)

-1.5

Channel

(PAL-D)

59

Main output level

(dBμV)

95±1

90±1

CNR

(dB)

52

CSO

(dB)

60

CTB

(dB)

65

Signal AC ratio

(dB)

66

Thunder-resisting voltage

(KV)

5(10/700μs)

Voltage

(V)

A: 220V±10%; B: 30~60VAC

DC comsumption voltage

(A/V)

0.8A/24V

0.8A/24V

[remark]CNR, CTB, CSO is the link index from optic transmitter to receiver. Unit index is CNR=62dB, CTB=87dB, CSO=77dB.

 

Principle and block diagram of 9924

Inner structure of 9924