Pendulum FDA-301 User manual

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Frequency Distribution Amplifier
FDA-301
User’s Manual
4031 600 30001
2019 – 1st Edition
© 2019, Pendulum Instruments

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Table of Contents
1. GENERAL INFORMATION................................................................................................................. 5
About this Manual............................................................................................................................... 5
Warranty ............................................................................................................................................. 5
Declaration of Conformity................................................................................................................... 5
2. PREFACE........................................................................................................................................... 6
Introduction......................................................................................................................................... 6
Powerful and Versatile Functions ....................................................................................................... 6
3. PREPARATION FOR USE................................................................................................................... 7
Safety................................................................................................................................................... 7
Introduction..................................................................................................................................... 7
Safety Precautions........................................................................................................................... 7
Caution and Warning Statements ................................................................................................... 7
If in Doubt about Safety .................................................................................................................. 8
Environmental Considerations ............................................................................................................ 8
Product End-of-Life Handling .......................................................................................................... 8
Equipment recycling........................................................................................................................ 8
Unpacking............................................................................................................................................ 8
Check list.......................................................................................................................................... 9
Installation........................................................................................................................................... 9
Type number and Serial number..................................................................................................... 9
Supply Voltage............................................................................................................................... 10
Grounding...................................................................................................................................... 10
Power switch ................................................................................................................................. 10
Orientation and Cooling ................................................................................................................ 10
Fold-Down Support ....................................................................................................................... 11
Rackmount Adapter – one instrument (Option 22/90)................................................................. 11
Assembling the Rackmount Kit (Option 22/90)............................................................................. 12
Reversing the Rackmount Kit ........................................................................................................ 12
Rackmount Adapter – two instruments (Option 22/05) ............................................................... 13
Assembling the Rackmount Kit (Option 22/05)............................................................................. 14
4. USING THE CONTROLS................................................................................................................... 16
Front Panel – Inputs .......................................................................................................................... 16
LED – status ....................................................................................................................................... 16

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Rear Panel – Outputs......................................................................................................................... 17
Signal types........................................................................................................................................ 18
Sine ................................................................................................................................................ 18
Pulse .............................................................................................................................................. 18
E1 clock and data........................................................................................................................... 18
Time of Day.................................................................................................................................... 18
Start and Usage ................................................................................................................................. 19
Power on ....................................................................................................................................... 19
Input source redundancy with auto-changeover.......................................................................... 19
Power supply redundancy with auto-changeover ........................................................................ 19
Configuration examples .................................................................................................................... 20
A: Local distribution of a 10 MHz reference via coax to 12 local users......................................... 20
B: Local distribution of a 10 MHz & 1-pps via coax to 8 local users.............................................. 20
C: Remote distribution of 10 MHz, 1 site, 12 users....................................................................... 21
D: Remote distribution of 10 MHz, 6 sites, 72 users..................................................................... 21
E: Remote distribution of 10 MHz & 1-pps, 6 sites, 24 users........................................................ 21
F: Remote distribution of E1 clock & data, 9 sites, 54 users ......................................................... 22
G: Remote distribution of IRIG DCLS time code, 6 sites, 72 users ................................................ 22
Input and output connectors ............................................................................................................ 22
Fiber Optic Ports............................................................................................................................ 22
BNC Ports....................................................................................................................................... 23
5. QUICK PERFORMANCE CHECK....................................................................................................... 25
Recommended Test Equipment........................................................................................................ 25
Power On test.................................................................................................................................... 25
Check of one Distribution unit in local mode (coax in/coax out)...................................................... 26
Sine input coax test ....................................................................................................................... 26
Pulse input coax test ..................................................................................................................... 26
Sine output coax test..................................................................................................................... 27
Pulse output coax test................................................................................................................... 27
Check of two FDA-301 Distribution Amplifiers with fiber in between (coax – fiber – coax) ............ 28
Sine input coax test - transmitter unit .......................................................................................... 28
Pulse input coax test – transmitter unit........................................................................................ 28
Sine output fiber test - transmitter unit........................................................................................ 29
Pulse output fiber test - transmitter unit...................................................................................... 29

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Sine input fiber test - receiver unit................................................................................................ 29
Pulse input fiber test - receiver unit.............................................................................................. 29
Sine output coax test - receiver unit ............................................................................................. 30
Pulse output coax test - receiver unit ........................................................................................... 30
6. PREVENTIVE MAINTENANCE ......................................................................................................... 31
Fan Replacement............................................................................................................................... 31
7. TECHNICAL SPECIFICATIONS.......................................................................................................... 32
Inputs................................................................................................................................................. 32
Outputs.............................................................................................................................................. 32
Power Supply..................................................................................................................................... 33
Dimensions and Weight .................................................................................................................... 33
Environmental conditions ................................................................................................................. 33
8. SERVICE.......................................................................................................................................... 34
Sales and Service office ..................................................................................................................... 34
USA: ............................................................................................................................................... 34
Rest of the world:.......................................................................................................................... 34

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1. GENERAL INFORMATION
About this Manual
This manual contains instructions on how to install and use the FDA-301 Frequency Distribution
Amplifier.
Warranty
The Warranty Statement is part of the folder Important Information that is included with the
shipment.
Declaration of Conformity
The complete text with formal statements concerning product identification, manufacturer and
standards used for type testing is available on request.

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2. PREFACE
Introduction
Congratulations on your choice of instrument. It will serve you well for many years to come. Your
instrument is designed to bring you the most efficient way of distributing a reference frequency and
pulsed signals. It gives significantly increased performance compared to traditional Distributors of
signals. The FDA-301 offers the following advantages:
-Multiple signal types:
Low noise sine wave (default 10MHz)
Timing reference signals, 1-pps and IRIG DCLS
Serial ToD
Telecom signal E1 clock & data
-Distribution via optical fiber or electrical coax
-No noise pick-up, no ground current loops and up to 2km range using fiber
-Three modular output boards providing up to 12 coax, or 18 fiber outputs
-Power source redundancy: AC and optional DC power
Powerful and Versatile Functions
A unique feature of your new instrument is modularity. The output signal cards are interchangeable,
which allows for any configuration chosen by the user without the need to send the instrument to
the manufacturer. One of the advantages of distribution via fiber is transmission to remote sites,
over long distances, up to 2 km.

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3. PREPARATION FOR USE
Safety
Introduction
Please take a few minutes to read through this part of the introductory chapter carefully before
plugging the power cable into the wall outlet. This instrument has been designed and tested for
Measurement Category I, Pollution Degree 2, in accordance with EN 61010-1:2011 and EN 61326
:2013, increased test levels according to EN 61000-6-2:2008, Group 1, class B, CE. It has been
supplied in a safe condition. Study this manual thoroughly to acquire adequate knowledge of the
instrument, especially the section on Safety Precautions hereafter and the section on Installation on
next pages.
Safety Precautions
All equipment that can be connected to line power is a potential danger to life. Handling restrictions
imposed on such equipment should be observed. To ensure the correct and safe operation of the
instrument, it is essential that you follow generally accepted safety procedures in addition to the
safety precautions specified in this manual. The instrument is designed to be used by trained
personnel only. Removing the cover for repair, maintenance, and adjustment of the instrument must
be done by qualified personnel who are aware of the hazards involved.
The warranty commitments are rendered void if unauthorized access to the interior of the
instrument has taken place during the given warranty period.
Caution and Warning Statements
CAUTION: Shows where incorrect procedures can cause damage to, or destruction of equipment or
other property.
WARNING: Shows a potential danger that requires correct procedures or practices to prevent
personal injury.
Shows where the protective ground terminal is connected inside the instrument.
Never remove or loosen this screw.
This symbol is used for identifying the functional ground of an I/O signal. Itis always
connected to the instrument chassis.

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If in Doubt about Safety
Whenever you suspect that it is unsafe to use the instrument, you must make it inoperative by doing
the following:
- Disconnect the line cord
- Clearly mark the instrument to prevent its further operation
- Inform your Pendulum-Instruments representative.
For example, the instrument is likely to be unsafe if it is visibly damaged.
Environmental Considerations
This section provides information about the environmental impact of the product.
Product End-of-Life Handling
Observe the following guidelines when recycling an instrument or component:
Equipment recycling
Production of this equipment required the extraction and use of natural resources. The equipment
may contain substances that could be harmful to the environment or human health if improperly
handled at the product's end of life. To avoid release of such substances into the environment and to
reduce the use of natural resources, we encourage you to recycle this product in an appropriate
system that will ensure that most of the materials are reused or recycled appropriately.
This symbol indicates that this product complies with European Union requirements
according to Directives 2012/19/EU and 2006/66/EC on waste electrical and
electronic equipment (WEEE) and batteries.
Batteries
This product does not contain any built-in battery
Unpacking
Check that the shipment is complete and that no damage has occurred during transportation. If the
contents are incomplete or damaged, file a claim with the carrier immediately. Also notify your local
Pendulum sales or service organization in case repair or replacement may be required.

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Check list
The shipment should contain the following:
-FDA-301 with options installed according to your ordered configuration
-Line cord
-Important Information fact sheet
-Certificate of Calibration
-CD including the following documentation in PDF format:
oUser's Manual
The actual configuration of your ordered instruments is readable from the last 5 digits in the “NC”
field of the product label on the rear panel.
NC: 9446 130 XYZZZ
X = Input options
Y = Power options
Z = Output options (3 slots)
X=1: 10 MHz only (std)
X=2: 10 MHz, pulse
X=3: 10 MHz, ToD
X=4: 10 MHz, E1 clock & data
X=5: 10 MHz, pulse + ToD
X=6: 10 MHz, pulse + E1 clock & data
X=7: 10 MHz, ToD + E1 clock & data
X=7: 10 MHz, pulse, ToD + E1 clock & data
Y=1: AC power
Y=2: AC + DC power
Z=0: module not installed
Z=1: 4x10 MHz coax
Z=2: 6x10 MHz fiber
Z=3: 4x pulse coax
Z=4: 6x pulse fiber
Z=5: 4x ToD electrical
Z=6: 2x 2.048 MHz + 2x 2.048 Mbps coax
Z=7: 3x 2.048 MHz + 3x 2.048 Mbps fiber
Example: NC = 9446 130 11021 = FDA-301 with 10 MHz input only (X), no DC option (Y) plus one empty output
slot, one 6x 10 MHz fiber output, and one 4x 10 MHz coax output (ZZZ).
Installation
Type number and Serial number
The products type number label, including the configuration (NC) and the serial number (SN), is the
best way for Pendulum Instruments to identify the product. If the serial number is not noted on your
delivery notes, please add the serial number to your own product documentation. This will be useful
at future contact with Pendulum Instruments.

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Supply Voltage
-Setting
The Frequency Distribution Amplifier may be connected to any AC supply with a voltage rating of
90 to 265 Vrms, 45 to 440Hz.The Frequency Distribution Amplifier automatically adjusts itself to
the input line voltage.
-Fuse
The secondary supply voltages are electronically protected against overload or short circuit. The
primary line voltage side is protected by a fuse located on the power supply unit. The fuse rating
covers the full voltage range. Consequently there is no need for the user to replace the fuse
under any operating conditions, nor is it accessible from the outside.
CAUTION: If this fuse is blown, it is likely that the power supply is badly damaged. Do not
replace the fuse. Send the Frequency Distribution Amplifier to the local Service Center.
Removing the cover for repair, maintenance and adjustment must be done by qualified and
trained personnel only, who are fully aware of the hazards involved.
The warranty commitments are rendered void if unauthorized access to the interior of the
instrument has taken place during the given warranty period.
Grounding
Grounding faults in the line voltage supply will make any instrument connected to it dangerous.
Before connecting any unit to the power line, you must make sure that the protective ground
functions correctly. Only then can a unit be connected to the power line and only by using a three-
wire line cord. No other method of grounding is permitted. Extension cords must always have a
protective ground conductor.
CAUTION: If a unit is moved from a cold to a warm environment, condensation may cause a shock
hazard. Ensure, therefore, that the grounding requirements are strictly met.
WARNING: Never interrupt the grounding cord. Any interruption of the protective ground
connection inside or outside the instrument or disconnection of the protective ground terminal is
likely to make the instrument dangerous.
Power switch
There is no power switch in this Distribution Amplifier. The unit is automatically powered when
connected to an AC source. It is also automatically powered when connected to a DC source, when
option 49 is installed.
Orientation and Cooling
The Frequency Distribution Amplifier can be operated in any position desired. Make sure that the air
flow through the ventilation slots at the side panels is not obstructed. Leave 5 centimeters (2 inches)
of space around the unit.