Comtech EF Data FOT3 User manual

Product Guide Sept, 2018
FOT3 HIGH PERFORMANCE FORWARD PATH OPTICAL TRANSMITTER
•Frequency range up to 1.2 GHz
•Electronic configuration interface on the frontal
surface
•Thermal control
•Connection to the Common or SN P monitoring
system
•Automatic gain control
•Optional powering redundancy
TECHNICAL SPECIFICATIONS___________________________________________________________
Optical parameters FOT3-C FOT3-S
Wavelength [nm] 1310±10
Output optical power [mW] 4-31 (6-15dBm)
Optical output return loss [dB] >55
Optical connector SC/APC, EURO2000
Laser type DFB Cooled
RF parameters
Frequency range [ Hz] 47…1218
Impedance [Ω] 75
Return loss [dB] >16
Level control GC/AGC
RF input level range [dBµV] 73…88
AGC deviation [dB] ±1
Flatness [dB] ±0.5
Slope [dB] ±0.5
RF testpoint [dBµV] (4.5% O I) 78±1
CTB [dBc] -65( )
CSO [dBc] -57( )
CNR [dB] >51( )
Communication parameters
Internal communication RS485
AC (SCTE 25-2 H S004)  
SN P v1  
General parameters
Current consumption [mA] 350
Power supply voltage [V] 24
Power consumption [W] 8.5
Specifications are subject to change without notice!
1PG-01-FOT3-EN

Product Guide Sept, 2018
Temperature range [°C] 0…+50
Dimensions [mm] 230x130x35
Weight [kg] 0.8
(1) Test conditions: OMI=3.2%, 110 NTS channels, received power=-1dBm
BLOCK DIAGRAM___________________________________________________________________
ORDERING INFORMATION_____________________________________________________________
F O T 3 X X -X X -X
Specifications are subject to change without notice!
2PG-01-FOT3-EN
Optical connector
SA SC/APC (Recommended type)
EU EURO2000
Output power
02 2mW / 3dBm
04 4mW / 6dBm
06 6mW / 8dBm
08 8mW / 9dBm
10 10mW / 10dBm
13 13mW / 11dBm
16 16mW / 12dBm
20 20mW / 13dBm
22 22mW / 13.5dBm
25 25mW / 14dBm
28 28mW / 14.5dBm
31 31mW / 15dBm
Communication standard
C Comtech (Default)
S SN P standard
MICRO
CONTROLLER
FRONT
PANEL
NARROWCAST
INPUT LASER
LASER CONTROL &
MONITORING
TP
ATT1 EQ
DET.
AMP
AMP1
AMP2 ATT2
RF
DET.
AMP3
FOT3
POWER
SUPPLY
A SUPPLY
B SUPPLY
RS485
SUMMARY ALARM