Ads by Google
1550nm External Modulation Optical Transmitter feature:
1. External optical transmitter adopt American JDUS pump laser.
2.optical transmitter compressed digital signal long-distance transmission for the CATV and telephone
communications.
3.Optical transmitter adopt international brand and system optimize control technique, SMNP network control technique
4.SBS value can be modulate in 13,16,18 condition, for different network transmission.
5. Adopt 19'' standard framework, built-in high performance switch power supply, which can
work in 85~265VAC
Principle Drawing
Optical Parameters
GENERAL | CONDITIONS | UNITS | MANUFACTURING SPEC. |
Laser Type | Cooled DFB LD with isolator | ||
Optical Wavelength | nm | 1550 ± 10 | |
Connector Type | SC/APC with shutter | ||
Laser RIN Noise Density | dB/Hz | ≤-160 | |
Optical Power | dBm | ≥7 or 9 (Optional) | |
Optical Output Port | 2 | ||
SBS Suppression Threshold | dBm | 13,16,18 |
RF Parameters
GENERAL | CONDITIONS | UNITS | MANUFACTURING SPEC. |
Operating Bandwidth | MHz | 45 to 870 | |
Channel Loading | NTSC | ch | 45 to 550MHz for 77ch NTSC |
RF Input Impedance | unbalanced | Ω | 75 |
RF Input Return Loss | dB | ≤-16 | |
RF Input Level | dBμV/ch | 75 to 85 (75 dBμV/ch nominal value @ 77 NTSC channels loading) | |
OMI | 3%±0.25 | ||
Flatness | dB | ± 0.75 | |
Connector Type | F type female | ||
Test Point | MOD. Monitoring | dBuV | +75±1 |
Electrical/Environmental/Mechanical
GENERAL | CONDITIONS | UNITS | MANUFACTURING SPEC. |
Control Interface | RS-485 | ||
Power Supply | 90 to 260 VAC, 50/60 Hz, 100W(Max.) | ||
Operating Temperature | °C | 0 to +50 | |
Storage Temperature | °C | -20 to +60 | |
Operating Humidity | % | 85% Max | |
Dimensions | mm | 350 L x 480 W x 49 H |
Link Performance
Standard Products
C/N table | Typical value |
LINK LOSS(dB) | |
CNR | 52dB (typical) |
CSO | ≤-65 dBc @ Port1 ≤ -63 dBc @ Port2 |
CTB | ≤-65 dBc |
XM | ≤-65 dB |
1550nm External modulation Optical Transmitter