MultiDyne CTV-2000-FTX Series - Manual (Page 6)

CTV2000-FTX Series CATV Fiber Optic Transmitter Users’ Manual
6
Chapter 3 Functional Diagram
RF INPUT
Digital
Attenuator
Pre-Amplifier Power Amplifier
RF Test
Predistortion
Board
DFB Laser Optical Output
ATC APC
MicroProcessor VFD Display Power Supply
AC INPUT
Network
Management
AGC/MGC
-20dB Test
Chapter 4 Specifications
4.1 Link Test Condition
The following test link consists of the CTV2000-FTX transmitter, 10Km standard fiber, an optical
attenuator and standard optical receiver. Input RF channels are 77 NTSC channels. Specifications are with
–1dBm optical input power to an optical receiver.
4.2 Specifications Table
Item Unit Parameter
Optical Output Power mW 4 6 8 10 12 14 16 18 20 22
Optical Link Path Loss dB 7 9 10 11 11.8 12.5 13 13.6 14 14.4
Optical Wavelength nm 1310±20
Type of Laser Cooled DFB in 14 pin butter-fly package with isolator
Optical modulation Direct Modulation
Optical connector Type SC/APC, Single Mode
Frequency Range MHz 45~870/1000
RF Input Level dBmV 15~25
Flatness In Band dB ±0.75
RF Input Impedance
Ω
75
RF Return Loss dB ≥16 （45~870)MHz
C/CTB dB
≥67
C/CSO dB
≥62
C/N dB
≥51
AGC Control Range dB ±5
Power Voltage V AC 90V~250V (50/60 Hz)
Power Consumption W 20
Operation Temperature
℃
0~45
Store Temperature
℃
-20~65
Relative Humidity % Max 95% non-condensing
Dimension mm 433(L) × 325(W) × 44(H)