Olson Technology LP-CAN User Manual

LaserPlus Model LP-OLAT/LP-OLAR

Advanced L-Band Series

10-4,000 MHz

OPERATING MANUAL

24926 Highway 108
Sierra Village, CA 95346
Phone: [phone]
Fax: [phone]
025-000580 Rev. X1 E-Mail: [e-mail]

05/05/11

TABLE OF CONTENTS

Table of Contents....................................................................................................................2

Safety.......................................................................................................................................3

Safety Precautions..................................................................................................................3

Laser Safety Procedure..........................................................................................................3

GENERAL FEATURES ............................................................................................................4

TRANSMITTER DESCRIPTION...............................................................................................5

Transmitter Control Overview ...................................................................................... 5

RECEIVER DESCRIPTION......................................................................................................7

Receiver Control Overview ............................................................................................ 7

TRANSMITTER BLOCK DIAGRAM ........................................................................................9

RECEIVER BLOCK DIAGRAM..............................................................................................10

RF PERFORMANCE..............................................................................................................11

LINK GAIN .............................................................................................................................12

NOISE FIGURE......................................................................................................................13

TRANSMITTER & RECEIVER 1dB COMPRESSION PERFORMANCE...............................14

TRANSMITTER & RECEIVER IP2 & IP3 PERFORMANCE..................................................15

TRANSMITTER & RECEIVER RF LEVEL DETECTOR PERFORMANCE............................16

OPTICAL PERFORMANCE...................................................................................................18

CONNECTIONS AND CONTROLS - TRANSMITTER...........................................................19

CONNECTIONS AND CONTROLS - RECEIVER..................................................................19

INSTALLATION......................................................................................................................20

Optical Connectors..................................................................................................... 200

Cleaning Optical Connectors..................................................................................... 200

Mounting .................................................................................................................... 200

ORDERING INFORMATION ..................................................................................................21

Transmitter Part Numbers ......................................................................................... 21

Receiver Part Numbers................................................................................................ 21

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SAFETY

Safety Precautions

The optical emissions from the units are laser-based and may present eye hazards if improp­erly used. NEVER USE ANY KIND OF OPTICAL INSTRUMENT TO VIEW THE OP-
TICAL OUTPUT OF THE UNIT. Be careful when working with optical fibers. Fibers can
cause painful injury if they penetrate the skin.

Laser Safety Procedures

ALWAYS read the product data sheet and the laser safety label before powering the product.
Note the operation wavelength, optical output power and safety classifications.

If safety goggles or other eye protection are used, be certain that the protection is effective at
the wavelength emitted by the device under test BEFORE applying power.

ALWAYS connect a fiber to the output of the device BEFORE power is applied. Power must
never be applied without an attached fiber. If the device has a connector output, attach a
connector that is connected to a fiber. This will ensure that all light is confined within the fi­ber waveguide, virtually eliminating all potential hazard.

NEVER look at the end of the fiber to see if light is coming out. NEVER! Most fiber optic laser
wavelengths (1310 nm and 1550 nm) are totally invisible to the unaided eye and will cause
permanent damage. Shorter wavelengths lasers (e.g., 780 nm) may be visible and are very
damaging. Always use instruments, such as an optical power meter, to verify light output.

NEVER, NEVER, NEVER look into the end of a fiber on a powered device with ANY sort of
magnifying device. This includes microscopes, eye loupes and magnifying glasses. This WILL
cause a permanent and irreversible burn on your retina. Always double check that power is
disconnected before using such devices. If possible, completely disconnect the unit from any
power source.

If you have questions about laser safety procedures, please call Olson Technology before
powering your product.

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GENERAL FEATURES

The LaserPlus LP-OLAT Advanced L-Band Transmitters and the LaserPlus LP-OLAR Ad­vanced L-Band Receivers form a feature-rich L-Band Fiber Optic Distribution System in a
very compact package. The wide bandwidth, as low as 10MHz and as high as 4,000MHz, al­lows for a wide variety of communications applications including L-Band satellite antenna
remoting, trunking radio, telemetry tracking and time and frequency reference distribution.
The extended frequency range to 4,000MHz and digital gain adjustment range of 25dB in the
transmitter and a digital gain adjustment range of 25dB in the receiver allow these products
to accommodate additional transponders including European and multiple satellite commu­nications applications. The enhanced bandwidth also facilitates stacked LNB applications to
accommodate additional transponders containing enhanced DBS services (HDTV, local
channels, etc.) over single-mode fiber for DBS distribution.

CONFIGURATION

The transmitter and receiver are housed in rugged, compact, standalone enclosures that plug
into the Olson Technology, Inc. LaserPlus platform. Up to fifteen modules can be plugged into
a single LaserPlus chassis.

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TRANSMITTER DESCRIPTION

The LP-OLAT Transmitter carries 10MHz to 4,000MHz RF signals over single-mode optical
fiber. Model LP-OLAT includes an adjustable 25dB digital gain control. Laser power options
include +4dBm/2.5mW (DFB, CWDM), +5dBm/3mW (DFB) or +10dBm/10mW (DFB, DWDM).
Built-in test points, LED indicators and alarms allow the transmitter to be easily set up and
maintained.

Figure 1 - Annotated Front & Rear View of Transmitter

TRANSMITTER CONTROLS OVERVIEW

On the front of the transmitter, the user can change the gain of the transmitter over a 25dB
range using S1 & S2. Higher gain allows the transmitter to be used with lower level RF sig­nals and vice versa. S1 is a 16-position, hexadecimal, rotary switch. The “0” setting is mini­mum gain and the “F” setting is the maximum gain. Each position is equal to a 1dB gain
change. So the gain of the “F” setting compared to the gain of the “0” setting will be 15dB
higher. The bottom switch of S2 is a high/low gain setting. When it is in the “Lo” position, the
incremental gain is 0dB. When it is “Hi” position, the gain increases by 10dB. To set the
transmitter for minimum gain, set S1 to “0” and the bottom switch of S2 to the left. To set the
transmitter for maximum gain, set S1 to “F” and the bottom switch of S2 to the right.

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J1 & J3 allow easy measurement of the transmitter optical output power using a Digital Volt
Meter (DVM). J1 is a ground. J3 gives an indication of the laser power. The scale factor is 0.1
V/mW. J2 is the optical output.

D1 indicates that the Laser Power is OK. It will be green if the laser control circuitry is be­having normally. If the laser or control circuitry fails, then D1 will turn red.

D2 indicates the input RF Level. Figure 2 indicates the thresholds at which D2 will switch. D2
will be yellow if the RF level is below the low threshold, red if the RF level is above the high
threshold and green if the RF level is between the low and high thresholds. For most applica­tions, if D2 is green, then the RF level is in the optimum range. J4 is the RF Input. It is a
high-frequency F-Type Female (75Ω) Connector. Alternately a 50Ω SMA connector can be
provided.

Figure 2 - RF Level (D2) Behavior

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RECEIVER DESCRIPTION

The OLAR L-Band Receiver can handle 10MHz to 4,000MHz RF signals. The receiver includes
a 25dB digital gain control. Optical input power ranges from -15 to +3dBm in the wavelength
range of 1270-1610nm. The receiver offers high sensitivity for an expanded optical link budget
from -22dBm to -3dBm. Built-in test points, LED indicators and alarms allow the receiver to
be easily set up and maintained.

Figure 3 - Annotated Front & Rear View of Receiver

RECEIVER CONTROLS OVERVIEW

Figure 3 shows the front and rear panels of the receiver.

On the front of the transmitter, the user can change the gain of the transmitter over a 25dB
range using S1 & S2. Higher gain allows the transmitter to be used with lower level RF sig­nals and vice versa. S1 is a 16-position, hexadecimal, rotary switch. The “0” setting is mini­mum gain and the “F” setting is the maximum gain. Each position is equal to a 1dB gain
change. So the gain of the “F” setting compared to the gain of the “0” setting will be 15dB
higher. The bottom switch of S2 is a high/low gain setting. When it is in the “Lo” position, the
incremental gain is 0dB. When it is “Hi” position, the gain increases by 10dB. To set the

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