Technical Manual 90-20-DA-36 AK1.doc
Fiber & Coax Distribution Amplifier
DA-36
Users Manual
About this manual
About the contents of this manual
The informatio
n in this document may be changed at any time without
notice.
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Table of Contents
About the contents of this manual
Table of Contents
Version and revision history.
Revision history for product:
Revision history for this docum
ent.
Safety Precautions
If in doubt about safety
Functional
Fiber optic distribution.
Universal distribution amplifier.
Easy operation.
LED indicators.
Grounding
Technical specifications
Fiber optic
Electrical
Power Supply.
Physical size
Environmental conditions
Product DA-36 consists of:
Serial number.
Front Panel/Output Panel.
Back Panel/Input Panel.
Fiber Optic Port.
Functional earth/ground. 8
BNC-ports 8
Configuration. 10
Power on. 10
LED-status. 11
Sales and Service office 12
Disclaimer 13
CE - mark 13
1
Version and revision history.
Revision
history for product:
Revision 0.
Valid for serial number: FS-02555 - (2004-06-03).
Revision history for this document.
Revision AK0.
2004-05-10, AnNy, document created.
Revision AK1.
2017-05-17, AnNy, text corrected.
Document properties.
Last saved: 2017-05-17
Filename: Technical Manual 90-20-DA-36 AK1.doc
Author.
Created by Anders Nyström.
Last saved by Ewa Bartłomiejczyk
2
Safety
Read this page carefu
lly before you install and use the product.
This product has been designed and tested according to safety Class 1
requirements of EN61010-1 and CSA 22.2 No.1010.1, and has been supplied in
a safe condition. The user of this product must have the required knowledge of it.
This knowledge can be gained by thoroughly studying this manual.
This product is designed to be used by trained personnel only. Removing the
cover for repair, maintenance, and adjustment of the product must be done by
qualified personnel who are aware of the hazards involved.
Safety Precautions
To ensure the correct and safe operation of this product, it is essential that you
follow generally accepted safety procedures in addition to the safety precautions
specified in this manual.
Do not exceed maximum power, voltage and current ratings for inputs and outputs.
SAFETY
Fig.
2-1 Do not overlook the safety instructions!
If in doubt about safety
Whenever you suspect that it is unsafe to use the product, you must make
it inoperative by doing the following:
– Discon
necting the line cord
– Clearly marking the product to prevent its further operation
– Informing your Pendulum representative.
For example, the product is likely to be unsafe if it is visibly
damaged.
3
General description
Functional
The DA-36, Fiber & Coax Distribution Amplifier is intended to extend distance
and g
alvanic isolate distribution of 10MHz reference frequency.
Fiber optic distribution.
In coaxial distribution nets, there is always a risk for unwanted ground loops
and other types of EMI. Also distances are limited to a few meters
depending on environment and the quality of the coax cables used. By
converting the galvanic 10MHz signal to a fiber optic signal, ground loops are
avoided and the distance can be extended up to more than 1km.
Universal distribution amplifier.
The DA-36 includes all functions in one unit.
Coax input.
Fiber optic input.
4
Coax outputs.
Fiber optic output.
10MHz
AGC
AGC
1
2
This enables the DA-3
6 to be used in any distribution
situations. Coax to fiber conversion.
Fiber to coax conversion.
Coax to coax amplification and splitting.
Fiber to fiber amplification.
4
Fiber
Fiber
10MHz
AGC
AGC
DA-36
Signal
source
10MHz
AGC
AGC
DA-36
Coax
User
Coax
Coax
User
Easy operation.
There are no front panel controls.
Both coax input and fiber input has Automatic Gain Control, AGC.
If the input signal is outside the AGC’s limits, the signal is to low or to high, the
signal for that input is blocked.
If both inputs have a signal within AGC limits, the signal from the fiber input is
used.
LED indicators.
At the output panel, there are 2 LED’s – INPUT STATUS .
Th
ey are marked – FIBER- and – COAX - .
They can both individually take the state of red or green.
Green indicates that the input has detected a signal within the AGC limits –
Signal good.
Red indicates that the input signal is outside the AGC-limits, as when there is
no signal attached. Red also indicates that the signal for this input is blocked.
If both LED’s are green, the coax input signal is internally blocked and the fiber
input signal is switched to the outputs, both fiber and coax outputs.
If both LED’s are turned off , there is no power supplied to the DA-36.
Grounding
As ground loops are the cause of most problems in coaxial networks, all coaxial
ports, both input and outputs are individually configurable to be galvanic
isolated or connected to case/chassis ground.
The case also has a chassis ground screw.
Remember that ground connections shall be low impedance also at high
frequencies, a bad ground connection can introduce unwanted ground loops, and
degradation of signal quality.
Short distances and large conductor areas are essential.
5
Technical specifications
Fiber optic
Wavelength
Fiber optical connector
Fiber type
Maximum optical
attenuation Typical distance
Electrical
Coa
x Input
Connector
Impedance
Amplitude
RF power
DC current
Coax Output
Connectors
Impedance
Amplitude
Period-to-period Jitter
Power Supply.
Input voltage range
AC connector
Power consumption
820nm
ST
Multimode fiber, 62.5/125µm or 50/125µm
8dB (including all connectors, splices and
fiber). 2km
BNC
coax connector
50 Ohm nominal
0.2Vrms – 2Vrms (sine).
max 0.25W
max 30mA
4 x BNC coax connector
50 Ohm nominal
1Vrms (sine)
< ( 50ps + optical jitter ).
Optical jitter is due to optical attenuation and
depends on quality and length of fiber used.
Optical jitter is 0ps for 1m and typically
<100ps for 1km.
90 - 264VAC, 47 – 63Hz, 0.8A
Euro, 2 pin.
<25W.
Physical size
The unit is intended to be used stand alone or mounted on a
wall
.
Heigh
Width
Depth
Weight
Shipping weight
E
nvironmental conditions
Operating temperature
Storage temperature
Safety
EMC
30 mm (rubber feet or
wallmount brackets
excluded).
125 mm
190 mm (from BNC input to BNC output, no
cables connected).
0,7kg
Xkg, including power supply.
0 - 50oC
-40 …+70oC
CSA22.2 No. 231, EN61010-1 + A1 (1992),
+ A2 (1995), Cat II, Pollution degree 2
EN61326/A1 (1998)
6
Unpacking.
Check that all packing material has no damage. If damages are discovered on
packing material, contact you
r shipping company, before unpacking.
The delivered product consists of several parts. Check that all part are
present according to list, and have no damage.
Product DA-36 consists of:
Quantity Part number Description
1
1 DA-36
Fiber & Coax Distribution Amplifier
(Part number includes all parts in this list).
2 2
60
-00-5437
Wall Mounting Bracket
3 6
50
-65-1673
Screw, MFX-H M3x5 FZB
4
4t
50-65-5030 Rub
ber feet
5
5
50
-65-5101
Isolating washers for BNC
6 1
60
-00-5538
Power supply.
7
1
50
-65-5128
Power cord
8
1
90
-20-DA-36
This manual
DA-36, (Part number includes all parts in list above).
Wall mounting kit, rubber feet and isolation washers.
7
Installation.
Serial number.
The products serial number 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 Fiberdata System.
Front Panel/Output Panel.
Back P
anel/Input Panel.
4 x BNC Output
I
nput Status indicators
B
NC Input
Fib
er optic Input
Fib
er optic Output
DC
Power
Functional ground
8
Fiber Optic P
ort.
The fiber optic connectors are of ST type.
The quality of the signal very much depends on the attenuation of the fiber
optic cable and splices.
For example the optical jitter is due to optical attenuation and depends on quality
and length of fiber used. Optical jitter is 0ps for 1m and typically <100ps for 1km.
It is therefore essential to keep the attenuation low. Patch cables and splices should
be kept as few as possible. Connectors shall be kept clean. Use a dry clean cotton
cloth, or similar, for polishing . If alcohol or any other solution is used for
cleaning, always polish with a dry cloth, to make sure that there is no residue left.
If a small amount of jitter can be accepted the AGC can control up to 8dB in
link attenuation, which equals approximately 2km fiber.
Two or more DA-36 can be cascaded to extend link length.
Make sure that the source fiber optic transmitter, marked Tx, is connected to
the remote units fiber optic receiver, marked Rx.
Functional earth/ground.
C
onnect to the functional ground screw if DA-36 chassis needs to be referenced
to ground.
This connection must be low impedance also at RF-frequencies.
BNC-ports
All BNC-ports are referenced to DA-36 chassis at delivery. They can
individually be configured to be isolated.
This is done by:
Functional ground
9
1. Loosen nut at BNC – 14mm nut.
2. Add one of the isolation washers delivered with the DA-36.
The isolation washer shall be added closest to the panel.
3
. Reassemble the washers and the nut in reverse order.
Use gentle force while tightening the nut.
Isolation washer
Isolation washer
10
Configuration
Configuration.
Th
ere are no parameters to be configured or set.
The DA-36 can be used in many distribution situations.
Coax to fiber conversion.
Fiber to coax conversion.
Coax to coax amplification and splitting.
Fiber to fiber amplification.
The DA-36 can be cascaded to form large tree-structures of distributed
reference signal nets.
Start and usage.
Power on.
The DC-cable from the power supply shall be connected to DA-36.
C
onnect power supply AC-cord to mains.
Allow DA-36 to warm-up for some minutes. Wait to connect fiber- or coaxsignal to input until both Input Status indicators are red.
11
LED-status.
There are two LED-ind
icators at the output panel – INPUT
STATUS.
They are marked – FIBER- and – COAX - .
They can both individually take the state of red or green.
Green indicates that the input has detected a signal within the AGC limits –
Signal good.
Red indicates that the input signal is outside the AGC-limits, as when there is
no signal attached. Red also indicates that the signal for this input is blocked.
If both LED’s are green, the coax input signal is internally blocked and the fiber
input signal is switched to both fiber and coax outputs.
If both LED’s are turned off/black , there is no power supplied to the DA-36.
Note that the Input Status indications do not evaluate the quality of the input
signals, only the amplitude.
12
Service
Sales and Service office
For additional product information, customer support and service,
please contact Pendulum Instruments at the following address:
Altaria Services Sp. z.o.o
ul. Lotnicza 37
80-298 Banino
Poland
Visiting address:
as above
Delivery address:
as above
Phone:
Fax:
Email:
Internet:
+48 (58) 681 89 01
+48 (58)684 86 49
service@pendulum.se
www.
pendulum.se
13
Warranty
The Warranty Statement is part of the folder Important Information that is
included with the shipment.
Declara tion 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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