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
