catv Trunk Amplifier

Function:Adjust the forward trunk input signal to normal network operation level and correct the attenuation value.

To recover the amplitude value of forward input signal to the normal operation level, then revises the coaxial cable to produce to the wide band signal along with the frequency changing s ATT.

     Power supply:  input protection circuit and suppresses the network out of the influence of the instant power supply surge.

    KBTE  trunk amplifier: Front and back combined using can transmit the long distant signal efficiently. That will be more suitable for the characteristic of the system if used in conjunction with it.

    There has card surge-discharger, coordinating current absorption point, double lightening-proof measure.

    Independent module group design to make the ATC and interstage adjusting to handle skillfully.

    Signals are branched and distributed inside for minimizing the components regarding branching and distribution outside, which can save cost and increase reliability.

    Inside up, down independent input and output test port are convenient for the adjusting and maintenance of the network device.

    KBTE reverse subassembly parts: Choosing and setting reverse amplifier module which can transmit the reverse signal and provide the front , back slope and gain control.

   Card two-way wave filter can realize the partition of different frequency. Suitable frequency is from 5~30/42/65MHZ, which can satisfy the choice of different system.

   Outside +24VDCpower indicator are convenient for testing the working status of the equipment.

The Technical parameter:

Items	Unit	Technical parameter			Note
		Forward		Reverse
Frequency range	MHz	47/87~750/550	5~65		Custom other frequency  segmentation ways
Rated gain	dB	32	22		Forward reference frequency point is 750MHz, and reverse for 65MHz
Operating gain(two-way, AGC)	dB	30			Forward reference frequency point is 750MHz, and reverse for 65MHz
Flatness in band	dB	±0.5	±0.5		Two-way is  0.75
Rated output level(OUT1)	dBuV	Branch104 distribution100	108		Forward reference frequency point is 750MHz, and reverse for 65MHz
C/CTB	dB	66			Forward 79 way PAL-D analogue channel
C/CSO	dB	64	≥52		Forward 79way PAL-D analogue channel, reverse for 10/.60MHz
Noise figure	dB	≤8	≤10
AGC characteristics	dB	±3/±0.3
Reflection loss	dB	≥16	≥16
Group time delay	ns	≤10	≤20		112.25/116.68MHz(forward) 57/59MHz(reverse)
Signal alternating voice ratio	%	<2
Concussion resistant voltage	KV	5			10/700us
Standard power voltage	V	A:60V   B:220V			AC

catv Trunk Amplifier