1550NM Direct Modulated Transmitter delivers high performance signal transmission of NTSC, PAL, ATC, QAM, and related digital information for CATV and/or telephony applications.
Product Description
HKTOT-1550 Direct Modulated Transmitter delivers high performance signal transmission of NTSC, PAL, ATC, QAM, and related digital information for CATV and/or telephony applications. It is based upon custom high-linearity optically isolated DFB (Distributed Feedback) lasers, specifically designed for multi-channel AM video applications. The built-in control circuits provide an exceptionally low noise and inter-modulation characteristics. Automatic output power control, coupled with temperature stabilization provided by a thermoelectric cooler ensures maximum performance and longer laser life.
The units are packaged in slim 1.75-inch high (1RU), 19-inch aluminum rack-mounted enclosures. Each unit is fitted with redundant self-contained power supplies with 90-265VAC inputs.
All internal laser parameters and monitoring functions are under microprocessor control: the front panel displays status information related to laser operation, temperatures, and RF input.
Main Features
Transmits NTSC, PAL, ATC, and related digital information for CATV and/or telephony applications.
Available in a variety of output levels.
High linearity, optically isolated, distributedAM feedback DFB laser.
54-1000MHz RF input bandwidth.
Front panel laser diode and rear panel RF input test points (-20dB).
Operation wavelength: 1550nm.
Product Specification
| Type | Item | Values | Notes |
| General | Operating temp. (ºC) | 0 – 50 | 32 – 122 ºF |
| Storage temp. (ºC) | -40 – 85 | ||
| Operating relative humidity (%) | 5 – 95 | Non-condensing | |
| Power supply (Volt AC) | 100 – 240 | ||
| Power consumption (W) | 25 | ||
| Size (WxDxH in inches) | 19×14.25×1.75 | ||
| Interface port | RJ45, RS232 | ||
| Optical | Wavelength (nm) | 1530 – 1563 | |
| Output power (dBm) | 6 and 10 | Depending on model | |
| Optical connector | SC/APC | ||
| RF | RF bandwidth (MHz) | 45 – 1000 | |
| Input level (dBmV) | 15 – 25 | AGC | |
| Flatness (dB) | -0.75 – +0.75 | ||
| Return loss (dB) | 16 | 75Ω impedance | |
| RF connector (main input) | F type | ||
| CSO (dB) | -57 | 78 channel load, back to back at 0dBm receive power | |
| CTB (dB) | -63 |
