Data Sheet, Rev. 0
March 6, 2003
System 8000 Fiber-Optic Interfacility Links
Designed to interface directly with earth station equipment, the multifaceted System 8000 interfacility link offers a wide
variety of unique, site-specific interconnectivity solutions for satellite earth stations.
Features
n
n
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n
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Single thread, 1:1, and 1:2 redundancy
EIRP monitoring capability
RS-232 or RS-485 serial interface
RS-232 or RS-422 data link
RFI/EMI immunity
CE approved
Consisting of a high-performance, highly flexible fam-
ily of fiber-optic transmitter and receiver plug-ins,
system 8000 allows both microwave and RF signals
to be transmitted over long distances through fiber-
optic cable, and thereby eliminates the need for
coaxial and waveguide interconnections. A fiber-
optic link between the control room and antenna site
allows for convenient remote monitoring and control
as well.
The system can be tailored for a wide range of trans-
mit/receive frequency bands and offers an extensive
selection of unique, site-specific interconnectivity
solutions for satellite earth stations, including:
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Applications
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C-, extended C-, X-, and Ku-band earth stations
IF and L-band IFLs
Rain-fade site diversity
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Configurable 19 in. x 3u (5.25 in.) equipment chas-
sis that includes redundant power supplies; redun-
dancy switching options: single thread, 1:1, and
1:2; and selectable serial interfaces, RS-232 or
RS-485.
Economical 70 MHz/140 MHz links for uplink
antenna remoting, downconverter output distribu-
tion, and intersite connections for backup or
antenna diversity.
L-band links cover the 950 MHz—2050 MHz and
can be used for block downconverted C-, extended
C-, X-, or Ku-band signals, or for L-band Inmarsat
transmit and receive applications.
C-, extended C-, X-, and Ku-band uplink and
downlink systems carry the main transmit and
receive signals between the control room and the
antenna site.
Description
The system 8000 fiber-optic interfacility links repre-
sent a comprehensive and simplified approach to
satellite earth station signal management and con-
trol. Essentially, the system is designed to bring
microwave technology into the 21
st
Century by con-
verting microwave signals into continuously variable
amplitude-modulated optical signals.
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Data Sheet, Rev. 0
System 8000 Fiber-Optic Interfacility Links
March 6, 2003
Description
(continued)
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Remote RF monitor links measure the composite
uplink signal at the uplink EIRP monitor coupler
located at the antenna’s input feed flange.
Monitor and control data link provides a full-duplex,
fiber-optic path for either RS-232C or RS-422 data
for the earth station’s monitor and control system.
Status information, including alarms and warnings, is
indicated by front panel LEDs and through standard
system monitor and control serial data ports on the
chassis rear panel.
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Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Operating Temperature Range
Storage Temperature Range
Power Requirements:
8001A Chassis With 8010A (Factory Set)
Status and Control Plug
Transmitter Plug-in
Receiver Plug-in
RF Input
Surge Protection*
Humidity, Noncondensing
Symbol
T
C
Tstg
—
Min
0
–20
115/60
—
—
—
—
—
5
Max
50
+60
230/50
5
18
5.2
2
—
95
Unit
°C
°C
Vac/Hz
W
W
W
V
—
%
RF
IN
—
RH
*A 500 V transient developed across 100 pF is discharged through 1500
Ω
to each connector pin without damaging the system.
Typical Block Diagram
As indicated in the block diagram below, the input and output amplifiers are integral to the system 8000. The tables
presented throughout the following sections, however, give the expected performance of each functional block in
the link with respect to their corresponding performance bands, including 70 MHz—140 MHz, L-band, and C-, X-,
and Ku-band interfacility links. These specifications, along with those for remote RF signal monitor interfacility links
and fiber-optic data links, are presented to aid in generating level diagrams for overall system analysis.
REDUNDANCY
SWITCHING UNIT (RSU)
INPUT
AMP
FIBEROPTIC LINK
OUTPUT
REDUNDANCY
AMP
SWITCHING UNIT (RSU)
RF IN
LOSS = 4 dB
NF = 4 dB
LOSS = 2 dB
NF = 2 dB
RF OUT
2
ORTEL a Division of EMCORE
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
Passband
Optical Loss
Nominal RF Input at Max Input Gain
Link Gain (–2 dB L
OPT
; –6 dB with Redundancy
Switching):
8603A/8604A
8603A-001/8604A-002
8603A-001/8604A
8603A-002/8604A-001
Flatness
Gain Slope
Gain Stability at Constant Temperature
Noise Figure at Max Input Gain
(Add 4 dB with Redundancy Switching):
8603A
8603A-001/8603A-002
Symbol
—
L
OPT
RF
IN
G
Min
40
0
—
Specification
Typ
—
—
–22
Max
200
30
—
Unit
MHz
dB
dBm
—
—
∆G
T
NF
0
11
23
35
—
—
—
—
—
—
—
±0.25/40
0.02
±0.15/24
9
20
32
44
—
—
—
dB
dB
dB
dB
dB/MHz
dB/MHz
dB/hr
Linearity (Third-Order Intermodulation Products
Max Input Gain, P
IN
= –27 dBm/Carrier for Two
Equilevel Carriers)
Group Delay:
Peak-to-Peak
Linear
Parabolic
Input/Output Impedance:
Standard
Option 050
Input/Output VSWR
Spur-Free Dynamic Range*
RF Connector
Optical Fiber
Optical Connector
Absolute Maximum RF Input (Max Input Gain)
—
—
—
—
—
—
—
—
25 (1)
38 (10)
28 (10)
34 (24)
37 (40)
52 (65)
C/I = 60
—
—
—
—
—
—
—
dB (km)
dB (km)
dB (km)
dB (km)
dB (km)
dB (km)
dB
—
—
—
—
Z
—
—
—
—
75
—
50
—
1.3:1
—
—
—
BNC
1310 nm, Single Mode
FC/APC (Tight-fit Keying),
Return Loss > 60
—
—
–5
1.0
0.05
0.015
—
—
—
ns
ns/MHz
ns/MHz
2
Ω
Ω
—
—
—
—
—
dB
dBm
—
SDFR
—
—
—
RF
IN MAX
* 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 – P
IN
), where P
IN
= input RF/carrier for two carriers.
ORTEL a Division of EMCORE
3
Data Sheet, Rev. 0
System 8000 Fiber-Optic Interfacility Links
March 6, 2003
70 MHz/140 MHz Interfacility Link Specification
(continued)
,
Table 2. 70 MHz/140 MHz Interfacility Link: 8603A Tx and 8604A Rx, (0 km to 10 km)
Parameter
Symbol
Input Amp
Min
Gain
Noise Figure
0 km
10 km
Output IP3
0 km, 0.5 dB L
OPT
10 km, 5 dB L
OPT
G
NF
12
17
—
—
30
—
—
Max
21
8
—
—
30
—
—
Fiber-Optic Link Output Amp
8063A
8064A
Typ
–33 – 2 L
OPT
—
45
59
—
–1
–11
Typ
21
4
—
—
26
—
—
System
(without RSU)
Min
Max
dB
dB
dB
dB
dB
dB
dB
–2 L
OPT
9 – 2 L
OPT
—
—
34
25
47
38
—
—
15
15
7
7
Unit
—
Table 3. 70 MHz/140 MHz Interfacility Link: 8603A-001 Tx and 8604A-002 Rx (10 km to 30 km);
8603A-001 Tx and 8604A Rx (25 km to 45 km);
8603A-002 Tx and 8604A-001 Rx (45 km to 70km)
Paramete
r
Symbol
Input Amp
Fiber-Optic Link
8063A-001/8603A-002
Typ
–10 – 2 L
OPT
48 55 54 59 57 71
(10) (30) (25) (45) (40) (65)
26 – 2 L
OPT
Fixed Output Amp
Typ
8604A-002
9
4
26
8604A
21
4
26
8604A-001
33
4
26
dB
dB
(km)
dBm
Unit
Min
Gain
Noise Fig.
OutPut IP3
G
NF
—
12
17
30
Max
21
8
8
4
ORTEL a Division of EMCORE
Data Sheet, Rev. 0
March 6, 2003
System 8000 Fiber-Optic Interfacility Links
L-Band Interfacility Link Specifications
The L-band links can carry a downconverted C-, X-, or Ku-band polarization. They can also carry the L-band trans-
mit or receive signals for a satellite mobile communications feederlink station for systems such as Inmarsat. Each
link is designed to meet and exceed all of the requirements for use in Intelsat Standard A and C earth stations even
under the highest signal-loading conditions. The links are especially useful for routing signals to and from a diverse
antenna site. One fiber is used in single-strand links and two are used in 1:1 redundant paths. Optionally, the path
may share a fiber-optic link with another path in 1:2 redundant configurations.
Table 4: L-Band Interfacility Link Specifications: 8710A Tx and 8720A Rx
Parameter
Passband
Optical Loss Budget
Nominal RF Input at Max Input Gain
Link Gain (–6 dB with Redundancy Switching)
Flatness
Gain Slope
Gain Stability at Constant Temperature
Noise Figure at Max Input Gain
(Add 4 dB with Redundancy Switching)
Spur-Free Dynamic Range*
Group Delay:
Peak-to-Peak
Linear
Parabolic
Input/Output Impedance
Input/Output VSWR
RF Connector
Optical Fiber
Optical Connector
Absolute Maximum RF Input (Max Input Gain)
Symbol
—
L
OPT
RF
IN
G
—
—
∆G
T
NF
SDFR
—
—
—
—
Z
—
—
—
—
RF
IN MAX
—
—
0.5
0.02
0.01
—
—
—
ns
ns/MHz
ns/MHz
2
Ω
—
—
—
—
dB
dBm
Min
950
—
—
–10
—
—
—
—
—
—
Specification
Typ
—
>6
–30
—
±0.2/48
±1.0/500
0.02
±0.15/24
20
96
Max
2050
—
—
17
—
—
—
—
—
—
Unit
MHz
dB
dBm
dB
dB/MHz
dB/MHz
dB/MHz
dB/hr
dB
dB/Hz
2/3
50
—
1.5:1
—
N Jack
1310 nm, Single Mode
FC/APC (Tight-fit Keying),
Return Loss > 60
—
—
–15
* 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 – P
IN
), where P
IN
= input RF/carrier for two carriers.
Typical L-Band Performance
Table 5. L-Band Interfacility Link Specifications: 8710ATx and 8720A (6 dB Optical Loss Budget)
Parameter
Symbol
Input Amp
Min
Gain
Noise Figure
Output TOI
G
NF
—
15
17
28
Max
30
8
31
Fiber-Optic
Link
Typ
–22
48
8
Output Amp
Min
0
13
16
Max
15
7
27
System
(without RSU)
Min
–7
34
3
Max
23
19
19
dB
dB
dBm
Unit
ORTEL a Division of EMCORE
5
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