Foxcom Satlight 7320 User manual

7320 Interfacility Link
Installation and User’s Guide
Copyright 2000

7320 IFL Installation and User’s Guide
Foxcom Proprietary Information 2
Document No. 93-005-28-C
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Toll Free: 1-866-OnePath
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Israel
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Fax: [phone]
Website: www.onepathnet.com
e-mail: [e-mail]
This manual contains PROPRIETARY and CONFIDENTIAL information of OnePath
Networks Inc. Reproduction, release to any third party, or any other unauthorized use, of any
information contained herein is expressly prohibited.

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Foxcom Proprietary Information 3
Document No. 93-005-28-C
Table of Contents
1. Front Chapter.......................................................................................................................5
1.1 Warranty and Repair Policy.............................................................................................5
1.2 Reporting Defects.............................................................................................................6
1.3 Certification .....................................................................................................................7
1.4 Conventions .....................................................................................................................7
1.5 Precautions.......................................................................................................................7
2. Introduction to the 7320 IFL...............................................................................................9
2.1 Options.............................................................................................................................9
2.2 Product Drawings...........................................................................................................10
2.3 Block Diagrams..............................................................................................................11
3. Set Up..................................................................................................................................12
3.1 Setting Up ......................................................................................................................12
3.2 Panel Descriptions..........................................................................................................17
4. Product Technical Description .........................................................................................18
4.1 7320 IFL Specifications.................................................................................................18
4.2 Alarm Pinouts ................................................................................................................19
4.3 Model Dimensions.........................................................................................................22
5. Manual Gain Control ........................................................................................................23
5.1 Transmitter Gain Control...............................................................................................23
5.2 Receiver Gain Control ...................................................................................................23
6. Trouble Shooting................................................................................................................24
7. Appendix I Cleaning Fiberoptic Connections.................................................................26
8. Appendix II Installing a Standalone Unit........................................................................26

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List of Figures
Figure 1 - System 7320 Transmitter Front and Rear Panels ....................................................10
Figure 2 - System 7320 Receiver Front and Rear Panels.........................................................10
Figure 3 - Transmitter Block Diagram.....................................................................................11
Figure 4 - Receiver Block Diagram .........................................................................................11
Figure 5 - Basic Setup of a System 7320.................................................................................12
Figure 6 - System 7320 Transmitter Pinout.............................................................................20
Figure 7 - System 7320 Receiver Pinout..................................................................................21
List of Tables
Table 1 - 7320 Transmitter LEDs ............................................................................................17
Table 2 - 7320 Receiver LEDs.................................................................................................17
Table 3 - 7320T Transmitter Pinout.........................................................................................20
Table 4 - 7320R Receiver Pinout.............................................................................................21
Table 5 - Receiver RF Signal Voltage .....................................................................................23
Table 6 - Trouble Shooting......................................................................................................24

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1. Front Chapter
1.1 Warranty and Repair Policy
Foxcom performs testing and inspection to verify the quality and reliability of our
products. Foxcom uses every reasonable precaution to ensure that each unit meets
specifications before shipment. Customers are asked to advise their incoming
inspection, assembly, and test personnel as to the precautions required in handling and
testing our products. Many of these precautions are to be found in this manual.
Nullification of Warranty
The Warranty is null and void if the product casing is opened.
The products are covered by the following warranties:
A) General Warranty
Foxcom warrants to the original purchaser all standard products sold by Foxcom
to be free of defects in material and workmanship for one (1) year from date of
shipment from Foxcom. During the warranty period, Foxcom will repair or
replace any product that Foxcom proves to be defective. This warranty does not
apply to any product which has been subject to alteration, abuse, improper
installation or application, accident, electrical or environmental over-stress,
negligence in use, storage, transportation or handling.
B) Specific Product Warranty Instructions
All Foxcom products are warranted against defects in workmanship, materials
and construction, and to no further extent. Any claim for repair or replacement of
units found to be defective on incoming inspection by a customer must be made
within 30 days of receipt of shipment, or within 30 days of discovery of a defect
within the warranty period.
This warranty is the only warranty made by Foxcom and is in lieu of all other
warranties, expressed or implied. Foxcom sales agents or representatives are not
authorized to make commitments on warranty returns.

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C) Returns
In the event that it is necessary to return any product against above warranty, the
following procedure shall be followed:
1. Return authorization is to be received from Foxcom prior to returning
any unit. Advise Foxcom of the model, serial number, and discrepancy.
The unit may then be forwarded to Foxcom, transportation prepaid.
Devices returned collect or without authorization may not be accepted.
2. Prior to repair, Foxcom will advise the customer of our test results and
any charges for repairing customer-caused problems or out-of-warranty
conditions etc.
3. Repaired products are warranted for the balance of the original warranty
period, or at least 90 days from date of shipment.
D) Limitations of Liabilities
Foxcom's liability on any claim, of any kind, including negligence for any loss or
damage arising from, connected with, or resulting from the purchase order,
contract, quotation, or from the performance or breach thereof, or from the
design, manufacture, sale, delivery, installation, inspection, operation or use of
any equipment covered by or furnished under this contact, shall in no case exceed
the purchase price of the device which gives rise to the claim.
EXCEPT AS EXPRESSLY PROVIDED HEREIN, FOXCOM MAKES NO
WARRANTY, EXPRESSED OR IMPLIED, WITH RESPECT TO ANY
GOODS, PARTS AND SERVICES PROVIDED IN CONNECTION WITH
THIS AGREEMENT INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE. FOXCOM SHALL NOT BE LIABLE FOR
ANY OTHER DAMAGE INCLUDING, BUT NOT LIMITED TO,
INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF OR IN CONNECTION WITH FURNISHING OF GOODS,
PARTS AND SERVICE HEREUNDER, OR THE PERFORMANCE, USE
OF, OR INABILITY TO USE THE GOODS, PARTS AND SERVICE.
1.2 Reporting Defects
The units were inspected before shipment and found to be free of mechanical and
electrical defects. Examine the units for any damage which may have been caused in
transit. If damage is discovered, file a claim with the freight carrier immediately.
Notify Foxcom as soon as possible.
Note
Keep all packing material until you have completed the inspection.

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1.3 Certification
The 7320 IFL has CE, FCC, FDA, and UL certification.
1.4 Conventions
In this manual the following special formats are used:
Note
Notes contain information detailing the current topic.
CAUTION
Cautions contain information regarding situations or materials which could
damage your product.
WARNING
WARNINGS CONTAINS INFORMATION REGARDING DANGEROUS
FUNCTIONS.
1.5 Precautions
1.5.1. Personal Safety
WARNING
OPTICAL RADIATION
APPLYING POWER TO THE TRANSMITTER UNIT WILL CREATE A
LASER ENERGY SOURCE OPERATING IN CLASS I AS DEFINED BY
IEC 825-1. USE EITHER AN INFRARED VIEWER, OPTICAL POWER
METER OR FLUORESCENT SCREEN FOR OPTICAL OUTPUT
VERIFICATION.
AC POWER HAZARD
THE RACKMOUNT POWER SUPPLY LINE IS EMI FILTERED AND
FUSED. THE CHASSIS IS CONNECTED TO EARTH GROUND IN
COMPLIANCE WITH SAFETY REQUIREMENTS. ALWAYS USE THE 3
PRONG AC PLUG WITH EARTH GROUND TO AVOID POSSIBILITY OF
ELECTRICAL SHOCK HAZARD TO PERSONNEL.

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1.5.2. Equipment Safety
To avoid damaging your product, please observe the following:
1. Fuses: To avoid possibility of fire hazard, always replace fuses with the
same type and rating of fuse as recommended on the power supply rear
label.
2. The input of the transmitter has an optional built-in bias for inserting DC
power up the coax to the LNB. Make certain any equipment or test
equipment connected to the transmitter input can withstand this bias.
3. The output of the receiver is AC coupled and can withstand the bias from a
satellite receiver. Do not exceed 25V DC bias.
4. Do not allow any dirt or foreign material to get into the optical connector
bulkheads. This may cause damage to the polished optical connector end
faces.
5. The optical fiber jumper cable bend radius is 3 cm. Smaller radii can cause
excessive optical loss and/or fiber breakage.
6. If multiple transmitters are installed in the chassis allow sufficient room for
adequate ventilation; otherwise the units may overheat causing possible
safety hazard or equipment damage.
7. When several units are installed on one 7000M chassis, ensure that the total
units’ current (including any LNB bias) does not exceed 2A per power
supply (e.g. if there are two power supplies the current should not exceed
4A.)

7320 IFL Installation and User’s Guide Introduction to the 7320 IFL
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2. Introduction to the 7320 IFL
The Sat-Light7320 IFL transmits an L-Band RF signal over singlemode fiber from a
satellite antenna LNB to control room equipment up to two kilometers away. The 7320 IFL
consists of an optical transmitter (7320T) which receives the L-Band signal from the LNB
and an optical receiver (7320R) which connects to a satellite receiver.
The 7320T and 7320R modules plug into a 7000M 3U chassis/power supply which enables
expansion of the system to accommodate any 6 Sat-Light modules. Accessories include the
Model 7000S Standby Power Supply, the Model 2000 1:1 Redundant Switch, the Model
2100 Amplifier, and the Model 7050-4 Serial Data Multiplexer, an asynchronous data link.
The 7320 IFL is a broadband transmission link; all standard satellite modulation formulas can
be transmitted (i.e. QPSK, FM, etc.).. The RF signal is directly modulated and adds virtually
no phase noise to the original signal. The direct modulation, coupled with the 7320 Links RF
circuitry, guarantees superior signal quality. The 7320 gives more than 25 dB carrier to noise
performance in a full multichannel environment.
Gain Control provides for optimization of the RF signal. LEDs, and back panel monitors and
alarms allow for complete system status monitoring and for interfacing with M & C systems.
2.1 Options
The 7320 IFL comes with a variety of options:
1. LNB powering - The transmitter unit can provide 15 VDC for optional LNB
powering.
2. 50 ΩInput/Output Impedance/BNC RF connector. Standard impedance is
75 Ω/F type, female connectors are standard.
3. Standalone unit - The 7320 IFL can be installed as a standalone unit. If the 7320
is used as a standalone, a separate power supply must be used.
On the side of the 7320T and the 7320R units is a sticker1which lists options 1 & 2.
Under each option is a square. If the unit includes a particular option the square under
the option should be marked. For example in Figure 1 the LNB option is marked.
1550 LNB 50 25
Options
Figure 1 - Option Sticker
1The sticker includes options which are not relevant to the 7320 IFL.

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2.2 Product Drawings
Figure 2 shows the front and rear panels of the System 7320 Transmitter units.
7320T
Figure 2 - System 7320 Transmitter Front and Rear Panels
Figure 3 shows the front and rear panels of the System 7320 Receiver units.
7320R
Figure 3 - System 7320 Receiver Front and Rear Panels

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2.3 Block Diagrams
Laser
Optical Power &
Temperature
Control
Pre-
Amp
Figure 4 - Transmitter Block Diagram
The 7320T Transmitter accepts RF input signal levels ranging from -40 to -20 dBm
total power (i.e. at 10 channel loading this is equivalent to -50 to -30 dBm per
channel). The unit amplifies the signal, and feeds it to a laser diode which linearly
converts the broadband RF signal to light intensity.
Power & Monitors
Preamp Postamp
Gain
Control Output
Photodiode
Bias &
Optical Power
Monitor
Figure 5 - Receiver Block Diagram
The 7320R Optical Receiver receives the optical intensity signal, and linearly converts
the signal back to RF. The Receiver then amplifies and reproduces the L-Band RF
signal.

7320 IFL Installation and User’s Guide Set Up
Foxcom Proprietary Information 12
Document No. 93-005-28-C
3. Set Up
The following section details:
• How to setup the System 7320units
• The System 7320 Front Panels
3.1 Setting Up2
Setting up the System 7320 Transmitters and Receivers consists of the following steps:
1. Setting up the transmitter.
2. Connecting the fiberoptic cable.
3. Setting up the receiver.
4. Monitoring the input/output signals.
5. Power requirements.
Observe all warnings and cautions mentioned at the beginning of this manual (page 7).
If after set-up you experience problems, refer to Trouble Shooting on page 24.
Figure 6 - Typical Application of a 7320 Link
2This section gives instructions on installing the transmitter and receiver in a chassis rackmount. For
instructions on installing a standalone unit refer to Appendix II Installing a Standalone Unit.

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3.1.1. Setting Up the Transmitter
1. Place the 7320T in the 7000M Chassis. The operating base plate
temperature must be between -10°C to 55°C.
2. Apply AC power to the chassis. The Power Supply’s LED should be lit.
3. Mount the 7320T into the chassis. The Laser LED should be lit.
4. Using an optical power meter, measure the optical power. Insert the meter’s
cable into the Transmitter’s optical connector. Power levels should be
between 0.3 - 1 mW.
Alternatively, use a DVM to measure the voltage at pin #6 on the back panel
connector. The power level should be -4.5 ±0.3 VDC.
5. On the rear panel, connect the coax cable to the RF Input Connector.
6. On the rear panel, connect the fiberoptic cable to the Optical Connector.
Note
If either LED is not lit, refer to Trouble Shooting on page 24.

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3.1.2. Connecting the Fiberoptic Cable
Before connecting the cable:
1. The fiberoptic cable must be either fusion spliced or connected via FC/APC
connectors.
2. Wipe the connector with a lint-free cotton cloth.
3. Note the polarity key of the optical connector before inserting.
To connect the cable:
1. Line Up the Polarity Key.
FC/APC
2. Insert the connector.
3. Tighten the connector.

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3.1.3. Setting Up the Receiver
1. Place the 7320 Receiver in the 7000M Chassis. The operating base plate
temperature must be between -10°C to 55°C.
2. Apply AC power to the chassis. The Power Supply’s LED should be lit.
3. Mount the 7320R into the chassis.
4. On the rear panel connect the fiberoptic cable to the Optical Connector. The
Opt. LED should be lit.
5. Using an optical power meter, measure the optical power coming to the
Receiver from the fiberoptic cable. The power levels of the Receiver should
be the power level measured at the Transmitter minus the fiber loss3.
Alternatively, use a DVM to measure the voltage at pin #6 of the
D type connector. The power level should be 1V to each 1 mW measured at
the Receiver input.
6. On the rear panel, connect the fiberoptic cable to the Optical Connector.
The Opt. LED should be lit.
7. On the rear panel, connect the coax cable to the RF Output Connector.
Note
If either LED is not lit, refer to Trouble Shooting on page 24.
3.1.4. Measuring the RF Signal Strength
The Receiver’s RF signal strength can be monitored during operation via a DC
RF signal-strength monitor. Maintenance personnel can perform a simple
verification process.
To measure the RF signal strength:
1. Using a Digital Volt Meter, measure the voltage at the connector pin #4
(both Rackmount or Standalone).
2. Refer to Manual Gain Control on page 23 for further details regarding
voltage levels.
3Fiber loss is defined as:
(0.4 dB/km x length (km) of the fiberoptic cable) + (0.5 dB x number of connectors).
For example if a link was 10 kilometers long and had two connectors the loss would be:
(0.4 dB/km x 10 km) + (0.5 dB x 2) = 5.0 dB.

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3.1.5. Powering the IFL
• Transmitter power requirement - 15VDC @ 300 mA (excluding LNB Drive
Option)
• Receiver power requirement - 15VDC @ 230 mA
• The Standalone Transmitter/Receiver can be powered by a Foxcom-supplied
external DC power supply.
• The Rackmount Transmitters/Receivers are plugged into the 7000M
rackmount chassis. The chassis can accept and power up to six units.
Note
At temperatures below 10
° C, the Transmitter’s internal heater will require an
additional 100 mA. The Transmitter’s total power requirement will then be
400 mA.
CAUTION
Ensure that there is a good airflow around the chassis rackmount.
7000M Chassis
The 7000M Chassis provides power to the plug in units. The power supply is
a linear unregulated type. Each plug in unit regulates its own voltage. The
7000M provides:
• 15 -18 VDC (unregulated) @ 2.2 amps power
• AC input @ 110/220 VAC (user selected)
• Units can be plugged in “hot standby”
• An internal 5 amp fuse
7000S (optional) Hot standby power supply
For applications demanding the utmost in reliability and uptime, the 7000S
standby power supply can be optionally plugged in to the standard chassis. The
7000S features hot swapping - supplies may be installed and removed even
during operation. Each power supply is fully redundant and can power a
completely loaded chassis on its own should its "partner" fail. During normal
operation the two units share the load by means of current steering diodes
located on the rear panel.

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3.2 Panel Descriptions
On the Front Panel of the 7320 Transmitter and Receiver unit are two LEDs. The
following tables describe the LEDs.
Table 1 - 7320 Transmitter LEDs
LED Name LED Function
Laser Indicates if the optical output power control is functioning
RF Indicates if the RF signal is above the minimal level
Table 2 - 7320 Receiver LEDs
LED Name LED Function
Opt. Indicates if the optical reception power is within limits
RF Indicates if the RF signal is above the minimal level

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4. Product Technical Description
• 7320 IFL specifications
• Alarm and Monitor Pinouts
• Model Dimensions
• 7320 IFL Front Panels
4.1 7320 IFL Specifications
RF Characteristics
Frequency Range 950 -2150 MHz
Flatness ±2.0 dB (typical); ±2.5 dB (max.)
Input/Output Impedance 75 Ω(50 Ωoptional)
Input VSWR 2:1 (max.)
Output VSWR 2:1 (max.)
Input Signal Range (Total Power) -40 to -20 dBm
Output Signal Range (Total Power) -45 to -15 dBm
CNR >30 dB in 35 MHz BW (single channel)
Link Gain adjustable ±10 dB
Gain Control Manual
RF Connector F type female (BNC - optional)
Optical Characteristics
Optical Wavelength 1310 ±10 nm
Optical Power Output 0.2 - 0.5 mW
Optical Link Budget 3 dB/ 2 km (min.)
Optical Connector FC/APC (or fusion splice)
Receiver Sensitivity -9 dBm optical (min.)
Miscellaneous
Chassis Capacity 6 plug-ins
Chassis Size 19” x 3U x 7”
Plug-in Unit size 5.1” x 4.9” x 1.6”
Power for Chassis 110 or 220 VAC
Power for Standalone
Transmitter 15 VDC @ 300 mA (max.)
(400 mA < 100 C)
Receiver 15 VDC @ 210 mA (max.)
Operating Temperature Range -10°C to 55°C
Storage Temperature -20°C to 85°C

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4.2 Alarm Pinouts
The unit’s pins are found at the backplane of the 7000M chassis. The 7000M
backplane incorporates 6 slots, each of which has its own 6 pin blank header associated
with it. Any monitor voltages to be measured may be done between the chassis ground
and the required pin. The pins are numbered as follows:
6
5
4
3
2
1

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Table 3 - 7320T Transmitter Pinout
Standalone
9 Pin
Connector
Rackmount 6
Pin Back Panel
Connector
Function Description
1 +15V Power 300 mA4(excluding LNB Option)
2 Not Used
3 Power Ground DC Return
4 4 RF Signal Strength
Monitor RF Signal Strength Indicator; Range 2 - 10V
5 6 PDI Measures Laser Optical Power;
Range -3.0 to -4V
6 1 LSRI Measures Laser Bias;
Range -4.5 ±0.2V
7 2 RF Alarm Open collector interface. Sinks
current when RF level is low.
8 3 LSR Alarm Open collector interface. Sinks
current when optical level is low.
9 5 LNB Bias (optional) External LNB Bias
9 Pin D-Type Male Connecter
Power Ground
+15V Power
1
2
3
4
5
6
7
8
9
7320T Transmitter
Laser Current Monitor
RF Signal Strength Monitor
Laser Photodiode Current Monitor
Not Used
AGC Alarm
LSR Alarm External LNB Bias
Figure 7 - System 7320 Transmitter Pinout
4400 mA below 100C