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Hangzhou Hongfeng Cable Co., Ltd.

Adjacent Headend Equipment, Catv Adjacent Modulator, 860mhz Adjacent Headend Equipment manufacturer / supplier in China, offering Good Quality 860MHz Fixed Channel Modulator, 75 Ohm Telecommunication CATV RF RG6 Standard Shield Coaxial Cable, Steel Tape Armored Aerial Overhead Optcial Fiber Cable and so on.

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Supplier Homepage Product Network Modulator Good Quality 860MHz Fixed Channel Modulator

Good Quality 860MHz Fixed Channel Modulator

FOB Price: Get Latest Price
Min. Order: 1 Piece
Production Capacity: 1000 PCS / Month
Transport Package: Neutral Carton Package
Payment Terms: L/C, T/T, D/P, Paypal, Western Union

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Basic Info
  • Frequency Range: 47-- 860MHz
  • Output Impedance: 75
  • Vision MID Frequency: 38MHz
  • Sideband Rejection: ≥ 62dB
  • Supply Voltage: 220V±15%(50Hz)
  • Trademark: Hongfeng
  • Output Level: 110(20 dBm Adjustable)V
  • V/a Power Ratio: 10--20 Continuously Adjustabledb
  • Frequency Accuracy: ≤ 5kHz
  • Output Return Loss: ≥ 12dB
  • Dimension: 483(L)X 200(W)X 44(H)Mm
  • Origin: Hangzhou Zhejiang China
Product Description
Good quality 860MHz Fixed Channel Modulator

1. Summary
Adjacent Channel Modulators are headend equipment for adjacent channel modulation of image and acoustical signals. Medium frequency treatment technique and phase locked loop technology are adopted to improve frequency stability. It is characterized by good out-of-band rejection and excellent vestigial sideband. It's the best choice for large and medium-sized front-end OF CATV systems...

2. Performance Characteristic
N Medium frequency treatment technique and dual-phase locked loop technology for CPU control is adopted to improve frequency stability.
N High performance Surface Acoustic Wave Filters and Spiral Bandpass Filters are adopted to improve out-of-band rejection.
N Independent RF Power Amplifiers are inside. The output level is up to over 110dBμ V.
N The vision signal modulation, audio deviation, A/V ratio and output level can be adjusted on the front panel.
N It's easier to operate, because of the digital channel number of front panel and the uplink of back panel.

Item

Unit

Technique Parameter

RF Parameter

Frequency Range

MHz

47 ~ 860

Output Level

dBμV

110±(20 dBm Adjustable)

Output Impedance

Ω

75

V/A Power Ratio

dB

10 ~ 20 Continuously Adjustable

Vision Mid Frequency

MHz

38

Frequency Accuracy

KHz

≤ 5

Sideband Rejection

dB

≥ 62

Output Return Loss

dB

≥ 12

Video Parameter

Input Level

Vp-p

0.7 ~ 1.4

Modulation

%

87.5

Differential Gain

%

≤ 3

Differential Phase

°

≤ 3

S/N Ratio

dB

≥ 51

C/L Delay

ns

≤ 40

Frequency Response

dB

±1.5

Audio Parameter

Input Level

Vp-p

0.7 ~ 1.4 

Input Impedance

Ω

600 (Unbalance)

Pre-emphasis

μs   

50   

Distortion

%

≤ 1.5

Frequency Response

B

±2 (50Hz ~ 15KHz)

Audio to Noise ratio

dB

≥ 55

General Characteristic

Supply Voltage

V

~ 220V±15%(50Hz)

Power Consumption

VA

8

Dimension

mm

483 ( L ) x 200 ( W ) x 44 ( H )

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