ASTRO AOMM-FHM2 User manual

Version 11-2021A
DRAFT VERSION

Contents
Operating manual AOMM-FHM2 - Version 11-2021Apage 2
Contents
Beforestartingoperationofthedevice.................................page03
Symbols and conventions used...........................................page 04
Proper use...........................................................................page 05
Target groups of this manual...............................................page 05
Important safety information................................................page 06
Description of performance.................................................page 10
Warrantyconditions.............................................................page11
Disposal..............................................................................page 11
Device description...............................................................page 12
Preparing for operation........................................................page 15
Getting started.....................................................................page 16
Operating the device...........................................................page 17
Maintenance and repair.......................................................page 25
Technical data.....................................................................page 26
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page 3
Before starting operation of the device
Operating manual AOMM-FHM2 - Version 11-2021A
Before starting operation of the device
NOTE: Read this operating manual attentively! It contains
important information about installation, ambient conditions
and maintenance of the device. Keep this operating manual for
future use and for handover in the event of a change of owner.
A PDF version of this manual is available to download on the
ASTRO website (there may be a more recent version).
The ASTRO company confirms that the information in this
manual was correct at the time of printing, but it reserves the
right to make changes, without prior notice, to the
specifications, the operation of the device and the operating
manual.
DRAFT VERSION

Symbols and conventions used
Operating manual AOMM-FHM2 - Version 11-2021Apage 4
Symbols and conventions used
Symbols used in these instructions
Pictograms are visual symbols with specific meanings. You will
encounter the following pictograms in this installation and operating
manual:
Warning about situations in which electrical voltage and non-obser-
vance of the instructions in this manual pose a risk of fatal injuries.
Warning about various dangers to health, the environment and
material.
Warning about thermal dangers (risk of burns).
Warningabouthighlaserradiationemitted fromadevice,connector
or adapter (risk of eye damage).
Recycling symbol: indicates components or packaging materials
which can be recycled (cardboard, inserts, plastic film and bags).
Used batteries must be disposed of at approved recycling points.
Batteries must be completely discharged before being disposed.
This symbol indicates components which must not be disposed of
with household rubbish being disposed of.
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page 5
Proper use
Operating manual AOMM-FHM2 - Version 11-2021A
Proper use
TheAOMM-FHM2opticalloss testsetcombinesapower meterand
a three-wavelength laser source, for optical fibre network installa-
tion and maintenance. Misuse of the device may result in electric
shock, fire and/or serious personal injury. Modification of the
devices or use for any other purpose is not permitted, and will
immediately void any guarantee provided by the manufacturer.
Target group of this manual
The target group for installation and starting operation of the
ASTRO optical transmission technology are qualified experts who
have training enabling them to perform the work required in accor-
dance with EN 60728-11 and EN 62368-1. Unqualified persons are
not allowed to install and start operation of the device.
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Important safety information
Operating manual AOMM-FHM2 - Version 11-2021Apage 6
Important safety information
To avoid any hazardous situations to the extent possible, you must
adhere to the following safety information:
ATTENTION: Failure to observe this safety
information may result in personal injury due to electrical
and thermal dangers!
Proper use
Only use the device at the approved operating sites and in the
ambientconditions allowed(asdescribed inthefollowing),and
only for the purpose described in the section “Proper use”.
Before starting operation of the device
NOTE: Read this operating manual attentively! It contains
important information about installation, ambient conditions
and maintenance of the device. Keep this operating manual
for future use and for handover in the event of a change of
owner or operator. A PDF version of this manual is available
to download on the ASTRO website (there may be a more
recent version).
Check the packaging and the device for transport damage
immediately. Do not start operation of a device that has been
damaged.
Danger of optical radiation
This product is laser class 1M (according IEC 60825-1 Safety of
Laser Products) and therefore several safety precautions must be
applied.
Exposure to class 1M laser radiation is possible on open
connectors or connected fibre patch cords. Do not view
exposedfibre or connectorends when handlingor maintaining
optical equipment. Do not view with optical instruments into
open connectors or fibre ends on switched on devices. Make
sure all wherever a fibre inspection is required, that the
inspected fibre or connector is completely optical radiation
free.
Due to the high optical radiation and improper handling of
optical fibre connections and devices, there could be risks for
the operating and service personnel. Access should be
restricted to trained personnel only.
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page 7
Important safety information
Operating manual AOMM-FHM2 - Version 11-2021A
Never look directly or with optical inspection tools into the end
ofafibrewhichisconnected toatransmitteroroptical amplifier
and which is in operation. If the eyes are exposed to optical
radiation, which are above the acceptable maximum, this
could cause permanent damage to the eye.
Installation, operation, maintenance
The electrical connection conditions must correspond to the
specifications on the device type plate.
Theambienttemperaturesspecifiedinthetechnicaldatamust
be complied with, even when climatic conditions change (e.g.
due to sunlight). If the device overheats, the insulation used to
isolate the mains voltage may be damaged.
The device may only be operated away from radiant heat and
other sources of heat.
To avoid trapped heat, ensure there is good ventilation on all
sides.
No objects may be placed on the device.
The device does not feature protection against water and may
therefore only be operated and connected in dry rooms. It
must not be exposed to spraying or dripping water, to conden-
sation, or to similar sources of moisture.
All adhere to all applicable national safety regulations and
standards.
The device is operational when connected to the mains power
or if the provided Lithium battery is charged and inserted into
the battery compartment of the device.
Excess mechanical loads (e.g. falling, impacts, vibrations)
may damage insulation used to provide protection from mains
voltage.
High excess currents (lightning strike, surges in the power
utility grid) may damage insulation used to provide protection
from mains voltage.
If there is no information about intended use (e.g. operating
site, ambient conditions), or the operating manual does not
include the corresponding information, then you must consult
the manufacturer of this device to ensure that the device may
be installed. If you do not receive any information on this from
the manufacturer, do not start operating the device.
Do not operate the instrument in the presence of flammable
gases or fumes.
Operating personnel must not remove instrument covers.
Component replacement and internal adjustments must be
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Important safety information
Operating manual AOMM-FHM2 - Version 11-2021Apage 8
made only by qualified service personnel.
Stop using the device when it malfunctions. (See section
„Maintenance and repair“).
Use only the AC adapter / battery charger designed for this
device. Using an improper AC power source may cause
fuming, electric shock or equipment damage and may result in
personal injury, death or fire.
Do not disassemble or modify the device, AC adapter or
battery. In particular, do not remove or bypass any electrical or
mechanical device (e.g. a fuse or safety switch) incorporated
into the design and manufacturing of this equipment. Modifica-
tion could cause damage that may result in personal injury,
death, electric shock or fire.
Never operate the device in an environment where flammable
liquids or vapors exist. Risk of dangerous fire or explosion
could result from the splicer’s electrical arc in such an environ-
ment.
Do not use compressed gas or canned air to clean the device.
They may contain flammable materials that could ignite during
the electrical discharge.
Do not modify, abuse, heat or excessively pull on the supplied
AC cord. The use of a damaged cord may cause fuming,
electric shock or equipment damage and may result in
personal injury, death or fire.
Do not short-circuit the terminals of AC adapter and optional
battery.Excessive electrical current maycausepersonalinjury
due to fumes, electric shock and equipment damage.
Do not touch the device,AC power cord and AC plugs with wet
hands.This may result in electric shock.
Do not operate the device near hot objects, in hot temperature
environments, in dusty/humid atmospheres or when
water-condensation is present on the device. This may result
in electric shock or malfunction.
Do not store the device in any area where temperature and
humidity are extremely high. Possible equipment failure may
result.
Operating personnel is not allowed to remove instrument
covers. Component replacement and internal adjustments
must be made only by qualified service personnel.
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page 9
Important safety information
Operating manual AOMM-FHM2 - Version 11-2021A
Maintenance
Read carefully: EN 60728 - Part 1 Safety requirements: No
service work during thunderstorms.
Repair
Repairs may only be performed by the manufacturer. Improp-
erly performed repairs may result in considerable dangers for
the user.
If malfunctions occur, the device must be disconnected from
the mains and authorised experts must be consulted. The
device may need to be sent to the manufacturer.
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Description of performance
Operating manual AOMM-FHM2 - Version 11-2021Apage 10
Description of performance
The optical multimeter AOMM-FHM2 can operate as an optical
power meter or as a laser source.
When operated as an optical power meter, three different modes
can be used:
Testing mode: In this mode you can either use the laser
source output of the device to measure the attenuation of
cablesor splitters or you can use the optical input of the device
to measure the incoming optical power.
Reference Setting mode: In this mode you can first measure
a refernece value of the optical power for just the cabling
betweentransmitter and receiver.Youmaythenput spliiters or
attenuatorsinto thesignalpath. Afterthatyoucan measurethe
attenuation of these elements without the influence of the
cabling.
History Data mode: In this mode you can store measured
data or recall stored data.
The AOMM-FHM2 features the following performance characerti-
stics:
three wavelengths (1310 nm, 1490 nm and 1550 nm)
combined in one port
the output of laser source stables at -5 dBm
lasersourcesuppliesCW and modulated 270 Hz, 1 kHz, 2 kHz
output
laser source transmits wavelength recognition code
optical power meter displays linearity and logarithmic optical
power values; automatic shifting of measurements in optical
power meter
automaticwavelengthrecognitionandshiftingtothemeasured
wavelength in optical power meter
storage of 999 sets of tested data in optical power meter
screen backlight
rechargeable batteries
auto-off at low voltage
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page 11
Warranty conditions
Operating manual AOMM-FHM2 - Version 11-2021A
auto-off after 10 min without operation
display of battery capacity
Typical operation:
optical power measurements (dBm and W)
fibre-link loss testing (dB)
insertion loss testing (dB)
fibre identification with 270 Hz, 1 KHz, 2 KHz signals
fibre installation and maintenance applications
FTTx: testing of passive optical networks
Warranty conditions
The general terms and conditions of ASTRO Strobel GmbH apply.
You will find these in the current catalogue or on the Internet under
“www.astro-kom.de”.
Disposal
All of our packaging material (cardboard boxes, inserts, plastic film
and bags) is completely recyclable. Electronic devices must not be
disposed of with household waste, but rather – according to DIREC-
TIVE 2012/19/EC OF THE EUROPEAN PARLIAMENT AND OF
THE COUNCIL from 4 July 2012, on waste electrical and electronic
equipment – must be properly disposed of. When it is no longer of
use, please bring the device for disposal to one of the public collec-
tion points for this purpose.
ASTRO Strobel is a member of the Elektro system solution for the
disposal of packaging materials. Our contract number is 80395.
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Device description
Operating manual AOMM-FHM2 - Version 11-2021Apage 12
Device description
Scope of delivery
main unit (including batteries)
quality check report
carrying bag
interchangeable FC, SC, ST connector for both power meter
and laser source
charger / AC adapter
PC software
USB connecting cable
operating manual
The AOMM-FHM2 features a CE marking. This confirms that the
product conforms to the relevant CE directives and adheres to the
requirements specified therein.
Battery compartment
The battery compartment is located on the rear side of the
device.You can open it by turning the black clip upwards. Put in two
AA type batteries and lock the clip again.
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Device description
page 13Operating manual AAOMM-FHM2 - Version 11-2021A
AOMM-FHM2 - Display
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Device description
Operating manual AOMM-FHM2 - Version 11-2021Apage 14
AOMM-FHM2 - Buttons on the front side
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Preparing for operation
Operating manual AOMM-FHM2 - Version 11-2021A
Preparing for operation
Unpacking the instrument
We suggest that you keep the original packing material. Using the
original packing material is your guarantee of protecting the instru-
ment during transit.
Green light: working state or fully charged
Red light: charging state
Checking the package contents
After unpacking the instrument, check to see whether it was dam-
aged during transit. This is particularly likely if the outer casing is
clearly damaged. If there is damage, do not attempt to operate the
instrument or to repair it without authorization. Doing so can cause
further damage and you may lose your warranty qualification.
Rechargeable batteries
There is a battery indicator on the screen to show if it is charged.
Therearefour states the indicator may show,full, with 2 blacks, with
1 black and empty. An empty battery indicator means there is al-
most no power left (see pictures below).
When the battery charge is too low to supply the necessary power,
the instrument will automatically switch off.
AC adapter operation
There is a DC input jack on the bottom side of the AOMM-FHM2 in-
strument casing into which the output cable of the AC adapter must
be plugged. When the AC adapter is plugged in, the indicator on the
LCD will be displayed.
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Getting started
Operating manual AOMM-FHM2 - Version 11-2021Apage 16
NOTE: Make sure that the operating voltage is within the
range of the local AC voltage.
AC adapter supply isn‘t allowed when dry batteries are used in
the instrument!
Getting started
USB interface
You can use the USB interface to connect the instrument to a PC
and download the stored data. There is a socket on the bottom side
of the instrument right beside the DC input jack (see picture below).
The USB cable supplied can be used to connect it to the USB inter-
face of a PC. When the USB cable is connected, the indicator on the
LCD screen will be displayed.
Turning the instrument on and off
Press the "ON/OFF" key briefly.
The instrument powers on, and backlighting switches on. Please
check the battery capacity if it fails.
Press the "ON/OFF" key briefly again.
The instrument powers off, and backlighting switches off.
Activating the automatic shutdown function
The instrument powers off automatically if there is no key press
within 10 minutes. Press the "ON/OFF" key for about 2 seconds to
power on the instrument with "auto-off" function deactivated.
Switching backlighting of the LCD on and off
Press the backlighting key .
Backlighting switches on.
Press the backlighting key again.
Backlighting switches off (see figure below).
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page 17
Operating the device
Operating manual AOMM-FHM2 - Version 11-2021A
Operating the device
When used as a power meter, the AOMM-FHM2 will measure the
optical power or loss and can be operated in three different modes
(„Testing“, „Reference Setting“ and „History Data“). Depending on
the selected mode, the functions of the buttons are as follows:
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Operating the device
Operating manual AOMM-FHM2 - Version 11-2021Apage 18
Using the laser source of the device
To use the laser source of the AOMM-FHM2, you must connect the
output [7] of the device.
The button can be used for shifting the wavelength of the laser
source.
The laser source module defaults to be closed when the user turns
on the equipment. Press this button and the wavelength LED of
1310 nm, 1490 nm or 1550 nm will be on circularly or the
wavelength LED will be off.
NOTE: It is suggested to turn off the laser source
module when it is not needed to save battery power.
The button can be used for shifting the modulated wavelength
and CW of the laser source.
When the laser source works on any wavelength of 1310 nm, 1490
nmor 1550 nm, press thisbuttontoselectthemodulation of 270 Hz,
1 kHz and 2 kHz circularly and the LED of the modulated wave-
length will be on correspondingly. Pressing the key can also turn off
the modulation and shift to the CW.
The buttoncanbeusedtoswitchonor off the auto-recognition
mode of fhe power meter and laser source.
Press this button to turn on the auto-recognition mode and "TWIN"
will be displayed on the LCD. Press again to turn off the mode.
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Operating the device
Operating manual AOMM-FHM2 - Version 11-2021A
NOTE: The "TWIN" mode is on or off at the same time in
the laser source and power meter modules of the AOMM-
FHM2.
It is suggested to turn off the "TWIN" mode when you don't use
it. The output of laser source will be fluctuated.
The function of "TWIN" and Modulation cannot work
together. When "TWIN" mode is on, the modulation of the
laser source module is closed automatically.
Wavelength will be shifted automatically according to the
recognition when the "TWIN" mode of the power meter
module is on. In words, the modulated signal of 270 Hz, 1 kHz
and 2 kHz cannot be recognized and received now.
Operation in „Testing“ mode
„Testing“ is the standard mode of the device. Use the laser source
output of the device (as described above) to measure the attenua-
tion of cables or splitters or use the optical input [1] of the device to
measure the incoming optical power.
The button can be used for shifting the wavelength of the
power meter module. By pressing this button it is possible to cycle
though the different wavelength (1490 nm, 1550 nm, 1625 nm, 850
nm, 1300 nm and 1310 nm, see figure below). The instrument
defaults to 1310 nm.
NOTE: The power meter defaults to auto-recognize the
modulated signal of 270 Hz, 1 KHz and 2 KHz and displays
the signal on the LCD screen. If the signal is CW, no modu-
lated signal will be displayed.
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Operating the device
Operating manual AOMM-FHM2 - Version 11-2021Apage 20
The button is used to adjust the unit in which the optical power
is displayed. The power meter defaults to the unit of "dBm". Press
this button to shift to "dB" and "mW".
NOTE: "dB" and "mW" are the unit representing the
absolute value of the meausred power value. If this power
value is less than 1 mW in the unit of "mW", the unit will be
shifted to "uW" automatically.
"dB" is the relative value of the measured power value. Firstly,
the user should set a reference value. Then, the current value
can be compared to the reference value. The formula is "dB"
value equals to "the reference value" minus "the current power
value in dBm".
The buttoncan be used to set the reference value ofthepower
meter.
The reference value defaults to 0,00 dBm on the optical power
meter module. Long press the button for over 2 seconds and the
instrument will set the current optical power value as the reference.
Short press the key to read the current reference value. The instru-
ment will return to the testing state after two seconds without oper-
ation. If there's operation, the instrument will shift to the reference
editing state.
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