cable tv headend equipment modulator

Pls contact: Phone No: 0086-15868850503 ; Skype:sherry12082

Adjacent Channel Agile Modulator is headend equipment for adjacent channel modulation of image and acoustical signals. Carrier frequency of output signal can be changed with internal phase-locked loop local oscillator circuits controlled by microcomputers. Medium frequency treatment technique and phase locked loop technology are adopted to improve frequency stability and reduce signal distortion. It's the best choice for large and medium-sized CATV systems.

Products Features

Medium frequency treatment technique and dual-phase locked loop technology for CPU control are adopted to improve frequency stability.Number of output channels are within the limit of 48~550/750/870MHz.Standard channels and added channels were installed.Carrier frequency or each channel is within the limit of 48~550/750/870MHz.4 standards of sound carrier frequency: 4.5, 5.5, 6.0, 6.5MHz.The vision signal modulation, audio deviation, A/V ratio and output level can be adjusted on the front panel.Independent RF Power Amplifiers are inside. The output level is up to over 110dBμV. It's easier to operate, because of the digital channel number of front panel, the uplink of back panel, memory channels and power failure memory function.Output power of B machine is 48~550MHz.Output power of C machine is 48~750MHz.Output power of D machine is 48~870MHz.Two lines 20-bit LCD display is on front panel. Add medium frequency interfaces.

Item	Unit	Technique Parameter
		RZB	RZC	RZD
RF Parameter
Output Frequency Range	MHz	47 ~550	550 ~750	47 ~ 866.25
Maximum Output Level	dBμV	≥ 110	≥ 110	≥ 110
Output Level Range	dB	20	20	10
V/A Power Ratio	dB	-13 ~ -20	-13 ~ -20	-13 ~ -20
Out-of-band Output Suppression	dB	-60	-60	-65
Video Parameter
Input Level	Vp-p	0.7~1.4	0.7~1.4	0.7~1.4
Differential Gain	%	≤ 3 @87.5%	≤ 3 @87.5%	≤ 4 @87.5%
Differential Phase	°	≤ 3 @87.5%	≤ 3 @87.5%	≤ 4 @87.5%
C/L Delay	ns	≤ 45	≤ 45	≤ 40
Vidio Modulation	dB	87.5 TYP	87.5 TYP	87.5 TYP
Audio Parameter
Input Level	Vp-p	0.4(±50 KHz)	0.4(±50 KHz)	0.7(±50 KHz)
Input Impedance	KΩ	0.6(Unbalance)	0.6(Unbalance)	10(Unbalance)
Distortion	%	≤ 0.6	≤ 0.6	≤ 1
Audio with Frequency	MHz	4.5,5.5,6.0,6.5 can be optional
General Characteristic
Supply Voltage	V	AC 180 ~ 250 ( 50Hz )
Power Consumption	W	≤ 8
Dimension	mm	483(L)× 210(W)	483(L)× 210(W)	483(L)× 250(W)
		× 44(H)	× 44(H)	× 44(H)

cable tv headend equipment

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Pls contact me: Phone No: 0086-15868850503 ; Skype:sherry12082

Dear Friend,

Thanks for your visiting, we RZ fiber supply CATV& FTTx products, including Outdoor & indoor fiber optic cable, Installation tools,Test and inspection equipments, accessories etc...

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Sherry Lian