LBVM920 Series 1.2 GHz Indoor High Output Optical Node
Installation & Operation Manual
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The LBVM920 85/102 high output optical node is designed for various applications from HFC to advanced fiber deep architecture networks. The LBVM920 node
features a 1218 MHz bandwidth, high RF output level up to 50 dBmV at 1218 MHz, 85/102 MHz split, Automatic Gain Control (AGC), and a wide selection of return
lasers including CWDM wavelengths as an option to overcome fiber limitations in a network for two-way services. All of these features and flexibility are packaged in a
compact, diecast aluminum housing.
FEATURES
•
85/102 MHz split
•
AGC -8 to 0 dBm
•
High RF output 50 dBmV at 1218 MHz
•
Compact, diecast aluminum housing
•
Low power consumption
•
-20 dB directional coupler test points for forward & reverse RF
•
Optional return 1310, 1550 & CWDM wavelengths
•
1218 MHz forward bandwidth
•
Optional WDM technology available for bi-directional services on a single fiber
•
Superior heat dissipation
•
I/O optical level test points
•
Optional diplex filters 42/54
PRODUCT OVERVIEW
•
Model: LBVM920
•
Bandwidth: 5-85 MHz/102-1218 MHz
•
Powering: 12-30 VDC
CAUTION
Risk of electric shock. Do not open.
No serviceable parts inside. Refer servicing to qualified service personnel.
Invisible laser radiation! Avoid eye injury. Never look into the optical cable or connector.
SPECIFICATIONS
Parameter
Specification
Forward Receiver
Optical Receive Wavelength
1200-1600 nm
Monitor Voltage
1 V/mW
Optical Input Power (Optical AGC)
-8 to 0 dBm
Optical Input Return Loss (Min.)
45 dB
RF Frequency Range
(1)
102-1218 MHz
Flatness of Frequency Response (f = fmin-1218 MHz)
± 1 dB
Output Return Loss (f = fmin-1218 MHz)
16 dB
Reference Output Level (± 2 dB @ -1 dBm optical input)
36-50 dBmV
Slope (± 1 dB)
14 dB
FUNCTIONAL SCHEMATIC
DC-DC
CONVERTER
L
H
ATT
AGC
CPU
ATT
EQ
LED
LED
1 V/mw
1 V/mw
Receiver
Transmitter
Rev TP
-20 dB
Fwd TP
-20 dB
Optical
IN
Optical
OUT
RF+PWR
In/Out
DC Input From
Power Pack
Vcc
LBVM920
(front angled view)
