1310nm or 1550nm forward optical transmitter 19 inches ,220V AGC control switching pre-distortion circuit SNMP function
Summarize
TFT1000M Series optical transmitter is specially designed for CATV optical fiber transmission system, used for the transmission of simulation electrical signals. It uses standard 19 inches frame installation, just needs AC 220V 50Hz power supply, the only input signal is the transmitted RF signal.
Features
adopt high quality high linear DFB laser moduleunique pre-distortion correcting circuit, fully guarantee excellent link performance excellent APC (automatic power control),ATC (automatic temperature control) function, ensure the stability of the laser output power and its long time work high quality RF exciting circuit, lower RF exciting power requirements high quality RF channel AGC control circuit, adapt to 72~82 dBuV (loaded 59 channels ) wide range of RF input signalhigh quality inserted type switch power supply, voltage range is wide, support double power thermal back-up perfect protection circuit (boot time delay, working parameters alarm, RF excited too high,too low shut off alarm) perfect LCD display control and RJ45 network management condition monitoring interface, built-in network management unit, support SNMP network management, can be convenient to monitor by local computer excellent thermal design to ensure the equipment long-term reliability
Diagram
Specifications
NO. | Item | Unit | Description | Remark |
1 | Operating Bandwidth | MHz | 47~860/1000 |
|
2 | RF Input Range | dBµV | 72~82 | loaded 59 channels |
3 | RF Test Point | dB | -20 |
|
4 | RF Input Impedance | Ω | 75 |
|
5 | RF Input Return Loss | dB | ≥16 |
|
6 | Flatness | dB | ± 0.75 |
|
7 | Optical Wavelength | nm | 1310 ± 20 | Remark 1 |
8 | Laser Type |
| DFB |
|
9 | Optical Connector Type |
| FC/APC or SC/APC |
|
10 | Optical return loss |
| >45.0 dB |
|
11 | CTB | dBc | ≥65 | Remark 2 |
12 | CSO | dBc | ≥60 | |
13 | CNR | dB | ≥51 | |
14 | Operating Temperature | °C | 0~ +50 |
|
15 | Storage Temperature | °C | -25 ~+65 |
|
16 | Dimension | mm | W×H×L 485×43×300 |
|
17 | Weight | kg | 4.5 |
|
18 | Installation |
| 19-inch standard rack |
|
Remark 1: 1550nm wavelength optional is option, this loss value only aimed at 1310nm wavelength
Remark 2: C/N, CTB, CSO are all tested when meet the predict link(10 km above optical fiber). C/N is PAL-D within 550 MHz loaded 59 television channels; CTB, CSO value is the typical value when PLA-D loaded 59 channels in 550 MHz, the receiver's distortion contribution isn't counted.
TFT1000M AGC 1U (1310 nm&1550nm) Forward Optical Transmitter
