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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

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:

Applications

C-, extended C-, X-, and Ku-band earth stations

IF and L-band IFLs

Rain-fade site diversity

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

Century by con-

verting microwave signals into continuously variable

amplitude-modulated optical signals.

Data Sheet, Rev. 0

System 8000 Fiber-Optic Interfacility Links

March 6, 2003

Description

(continued)

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.

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

Tstg

—

Min

–20

115/60

—

Max

+60

230/50

5.2

—

Unit

°C

Vac/Hz

—

*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

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

—

OPT

Min

—

Specification

Typ

—

–22

Max

200

—

Unit

MHz

dBm

—

∆G

—

±0.25/40

0.02

±0.15/24

—

dB/MHz

dB/hr

Linearity (Third-Order Intermodulation Products

Max Input Gain, P

= –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)

—

1.3:1

—

BNC

1310 nm, Single Mode

FC/APC (Tight-fit Keying),

Return Loss > 60

—

–5

1.0

0.05

0.015

—

ns/MHz

Ω

—

dBm

—

SDFR

—

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

), where P

= input RF/carrier for two carriers.

ORTEL a Division of EMCORE

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

—

Max

—

Fiber-Optic Link Output Amp

8063A

8064A

Typ

–33 – 2 L

OPT

—

–1

–11

Typ

—

System

(without RSU)

Min

Max

–2 L

OPT

9 – 2 L

OPT

—

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

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

8604A

8604A-001

(km)

dBm

Unit

Min

Gain

Noise Fig.

OutPut IP3

—

Max

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

—

OPT

—

∆G

SDFR

—

IN MAX

—

0.5

0.02

0.01

—

ns/MHz

Ω

—

dBm

Min

950

—

–10

—

Specification

Typ

—

–30

—

±0.2/48

±1.0/500

0.02

±0.15/24

Max

2050

—

Unit

MHz

dBm

dB/MHz

dB/hr

dB/Hz

2/3

—

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

), where P

= 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

—

Max

Fiber-Optic

Link

Typ

–22

Output Amp

Min

Max

System

(without RSU)

Min

–7

Max

dBm

Unit

ORTEL a Division of EMCORE