8000A Datasheet, PDF (3/19 Pages) Emcore Corporation – System 8000 Fiber-Optic Interfacility Links

Data Sheet, Rev. 0
March 6, 2003
System 8000 Fiber-Optic Interfacility Links
70 MHz/140 MHz Interfacility Link Specification
These links are designed to interconnect the up- and downconverters with the satellite modems or video exciters
and demodulators. They are specified to meet and exceed Intelsat requirements to 70 km. They are ideal for inter-
connections on site, to and from a diverse antenna site and for local access between a teleport and the end user.
The 70 MHz/140 MHz links are available as nonredundant or 1:1 redundant links only.
Table 1. 70 MHz/140MHz Interfacility Link Specification: 8603A Tx/8604A Rx, Options -001, -002, -050
Parameter
Specification
Symbol Min
Typ
Max
Unit
Passband
Optical Loss
Nominal RF Input at Max Input Gain
Link Gain (–2 dB LOPT; –6 dB with Redundancy
Switching):
8603A/8604A
8603A-001/8604A-002
8603A-001/8604A
8603A-002/8604A-001
Flatness
—
LOPT
RFIN
G
—
40
—
200
MHz
0
—
30
dB
—
–22
—
dBm
0
—
11
—
23
—
35
—
—
±0.25/40
9
dB
20
dB
32
dB
44
dB
—
dB/MHz
Gain Slope
Gain Stability at Constant Temperature
Noise Figure at Max Input Gain
(Add 4 dB with Redundancy Switching):
8603A
8603A-001/8603A-002
—
—
0.02
—
dB/MHz
∆GT
—
±0.15/24
—
dB/hr
NF
—
25 (1)
—
38 (10)
—
28 (10)
—
34 (24)
—
37 (40)
—
52 (65)
—
dB (km)
—
dB (km)
—
dB (km)
—
dB (km)
—
dB (km)
—
dB (km)
Linearity (Third-Order Intermodulation Products
—
—
C/I = 60
—
dB
Max Input Gain, PIN = –27 dBm/Carrier for Two
Equilevel Carriers)
Group Delay:
Peak-to-Peak
Linear
Parabolic
—
—
1.0
—
ns
—
0.05
—
ns/MHz
—
0.015
—
ns/MHz²
Input/Output Impedance:
Standard
Option 050
Input/Output VSWR
Z
—
75
—
Ω
—
50
—
Ω
—
—
1.3:1
—
—
Spur-Free Dynamic Range*
RF Connector
SDFR
—
—
—
—
—
BNC
—
Optical Fiber
—
1310 nm, Single Mode
—
Optical Connector
Absolute Maximum RF Input (Max Input Gain)
—
RFIN MAX
FC/APC (Tight-fit Keying),
Return Loss > 60
—
—
–5
—
dB
dBm
* Spur-free dynamic range (SFDR) = 2/3(IP3 – NF + 173.8) dB/Hz^2/3; IP3 = input third-order intercept, NF = noise figure. SFDR is the range
where the carrier is above the noise and the third IM is below the noise, C/I = 2x(IP3 – PIN), where PIN = input RF/carrier for two carriers.
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