1.0 PRODUCT DESCRIPTION  

SR804, the operating bandwidth of 4 ~ 862MHz, is a low power consumption, high performance, and excellent cost performance RFTV broadcast network ONU(Optical network unit).  Products with high sensitivity optical receiver tube and Huatai special low noise matching circuit.

SR804 for Analog TV, in Pin =-9dBm when, Vo ≥ 79dBμV, CNR ≥ 44dB.

SR804 for Digital TV, in Pin =-16dBm when, Vo ≥ 74ddBμV, MER ≥ 34dB.

SR804 for Digital TV, in Pin =-20dBm when, Vo ≥ 66dBμV, MER ≥ 27 cal fiber amplifier power resources. For operators, can greatly reduce the cost of building the network. SR804 optical port mode with following three types optional:

     SR804 : operating wavelength 1260~1620nm.

     SR804/WD: Built-in CWDM, suitable for single-fiber triple wavelength system, RFTV

     operating wavelength 1550nm, passwavelength 1310/1490nm, can conveniently connect  the ONU  of EPON, GPON.

     SR804/WF: built-in 1310/1490nm filter,suitable for single-fiber triple wavelength system, RFTV Operating Wavelength 1550nm.

2.0 PRODUCT FEATURE

1. Extra-low noise(3.8% modulate, -9dBm receive, CNR ≥ 44dB)

2. Wide dynamic receiving optical power range: within Pin=-16, MER≥34dB

3. Can save a large number of optical power resource, greatly reduce the network configuration cost

4. In the range of 47~862MHz, all have good flatness (Fl≤± 0.75dB)

5. Built-in inter-stage gain adjustment, can choose high CNR and suitable output level according to different

 Receiving optical power.

6. Four-way high level output, can supply service for more users

7. Zinc. die-casting all-in-one metal shell, supply safeguards to opto-electrical sensing device

8. High output level can supply for many users

9. Low power consumption, high cost performance

3.0 MAIN APPLICATION

1. FTTH,FTTP, FTTO

2. FTTC, FTTN

3. HFC

4.0 TEST DATA(Pin=+2.0dBm~-20dBm)

Performance

Index

Supplement

Optic feature

CATV Work wavelength

(nm)

1260~1620

SR804

1540~1563

SR804/WF,SR804/WD

Pass wavelength

(nm)

1310,1490

SR804/WD

Channel Isolation

(dB)

≥40

1550nm & 1490nm

Responsibitity

(A/W)

≥0.85

1310nm

≥0.9

1550nm

Receiving power

(dBm)

+2~-9

Analog TV(CNR>45dB)

+2~-20

Digital TV(MER>28dB)

Optical return loss

(dB)

≥55

Optical fiber connector

SC/APC

SR804,SR804./WF

LC/APC

SR804/WD

RF Feature

Work bandwidth

(MHz)

47~ 862

Flatness

(dB)

≤±0.75

47~862MHz

Output level

(dBμV)

>88

Analog TV(Pin＝+1dBm)

>74

Digital TV(Pin＝-16dBm)

Output level adjust

(dB)

0~18

MGC

Return loss

(dB)

≥14

47 ~ 862MHz

Output impedance

(Ω)

75

Output port number

1

RF tie-in

F-Female

Analog TV

Link Feature

Test channel

(CH)

59CH(PAL-D)

OMI

(%)

3.8

CNR1

(dB)

52.9

Pin=-2dBm

CNR2

(dB)

46.8

Pin=-10dBm

CTB

(dB)

≤-65

Pin:0~-10dBm

CSO

(dB)

≤-68

Pin:0~-10dBm

Digital TV

Link Feature

MER

(dB)

≥36

Pin:+2~-13dBm

≥35.7

Pin=-15dBm

≥27.7

Pin=-20dBm

BER

(dB)

<1.0E-9

Pin:+2~-20dBm

General feature

Power supply

(V)

DC+12V

±1.0V

Power Consume

(W)

≤3

+12VDC,210mA

Work temp

(℃)

-20 ~ +50

Storage temp

(℃)

-40 ~ 85

Work relative temp

(%)

5 ~ 95

Size

(mm)

118×73×29

(W)×(D)×(H)

7.0 PRODUCT SERIES

8.0 NOTE

1. The power adapter for this equipment: Input 220V, output DC 12V(0.6A)

2. Keep the optical connector clean, the bad link will cause too low RF output level

3. The built-in RF adjustable attenuator(PAD) of equipment can debug suitable level for system users .User Should not adjust by themselves, to avoid the device damage.