Pro's Kit MT-7601 User manual

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MT-7601 OpticalPower MeterMT-7601 OpticalPower Meter USER'S GUIDE

Optical Power Meter
Optical Power MeterOptical Power Meter
MT-7601
USER'S GUIDE

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WARNINGWARNING
You arecautioned that changesor modifications not approved in thisdocument
could void yout authorityto operate this equipment.
Toreduce the risk of fire orelectric shock, do not expose thisapparatus to rain or moisture.
Toavoid electrical shock, do not openthe cabinet. Refer servicing to qualifiedpersonnel only.
expressly
Precautions for Use
Use batteries
At the same time, can not usedifferent style ordifferent capacitance batteries.And only chargethe rechargeable batteries.
Avoiding condensation problems
As much aspossible, avoid sudden temperature changes. Donot attempt to use the driveimmediately after moving it from acold
to a warm location,to raising the roomtemperature suddenly, as condensation may formwith in the drive.If the temperature
changes suddenly whileusing the drive, stop using itand take out batteries for atleast an hour.
Storage
When long timeno use,must take out the batteriesto avoid destroying the device.

Description
LCD
Power Button
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2
3
4
5
6
InGaAs detector
Wavelength/Unit Select Button
REF setting Button
Charging Socket
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2
3
4
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1.Pull the batterycover 2.Installing the battery 3.Push the batterycover 4.Complete
Installing the battery
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On/Off and Permanent On
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Press button will turnon the meter.
Press button againfor two secondsor more will
turn off themeter.
This meter hasa power-saving function, normal
boot and tenminutes without anyoperation, the device will automatically
shut down. Ifyou need to shield this functionand enable themeter keeps
on working, onlyneed to pressthe button and hold when you
boot the instrument.After twoseconds, the meter display will show "PERM"
which means permanentpower on.

Backlight Function
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Under boot status,short press the
button, you cancontrol the backlightfunction
on or off.The backlight function is used whenyou want touse the meter
at night ordarker occasions.

Wavelengths
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According tothe project, weneed to measure
optical signals ofdifferent wavelengths.Then we need
to select acorresponding wavelength tomeasure the
optical power.If the wavelengthneeds to be measured
does not matchwith the wavelengthwe select on the
optical power meter, it willlead to the measuring values
meaningless.
Press button after booting,the meter will
switch to themeasure status ofa corresponding
wavelength successively,and show on the display.
This series ofoptical power meter calibration measured
wavelength are:850nm, 1300nm,1310nm, 1490nm,
1550nm,1625nm.

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Wavelengths
The instrument hasbeen equipped with activated
wavelength identification functionby the factory, and users
can manually turnon or offthis function. In the boot mode,
please press thecombination key " " and " ", if
the center ofthe screen showsNO, which means the
wavelength identification functionhas been turnedoff;
but if thecenter of thescreen shows EN, which means it
turned on. Whenthe wavelength identificationfunction
starts, and connectswith laser sourcewhich has wavelength
identification function, theoptical power metercan identify
the current outputwavelength and automaticallyswitch to
the wavelength tomeasure.

Unit
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button can beused to changethe
display unit ofthe measurement datato meet the
different requirement. Whenpress and hold this
button for twoseconds, the displaywill successively
show the dBmvalue and mW/uWvalue .
The numeric relationshipbetween mW valueand dBm value is:
10lg(mW)=(dBm)

Reference
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Button is usedto set orcheck the
reference value. Shortpress this button,the display
will show 'REF'and the dBmvalue which has been
set up. Whenlong press fortwo seconds or more,
the device willuse the currentmeasurements to
overwrite the originalsetting value andset it as a
new preference value.Meanwhile the 'REF'sign
will flash threetimes on thedisplay. After that will
show the difference(dB).
(Each wavelength canset their ownreference value)

Power Indicator
Four levels indicationof power detection
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Represents the remaining80%---100% electricity
Represents the remaining40%---80% electricity
Represents the remaining20%---40% electricity
Represents the remainingelectricity less than20%

Charge
5V_500mA
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The instrument hasa charging function. When use rechargeable
batteries and alow battery indication shows on theinstrument, you
should promptly shutdown it and recharge. Long timeundervoltage
will shorten the lifetimeof the rechargeable battery.
Connect theAC adapter to the device correctly, it cancharge
Automatically. Besides,computer USB port can also beused for
charging. The batteryremaining indicator keeps flashing during
charging. It will stopwhen the charging isfinished. The battery
has finished thefast recharge and can be useddirectly. If you do not
stop recharging atthis time, the in strument willcontinue the trickle
charge state, usingsmall current to supply natural discharge.But this
process is not morethan 48 hours.
The instrument canstill be used while charging. Butdo not plug in
the ACadapter when it is not rechargeablebattery inside, or it will
cause a hightemperature and combustion, even explosion.

Meter Maintenance
General maintenance
Optical fiber connectthe adapter shouldavoid contacting with hard objects and keep clean.
Should be storedin a dryand ventilated place to avoid moisture.
When un usefor long time,shouldremove the batteries before storage.
Fault and solution
Failure name
Cannot boot Check the batteryhas
power or not
Check the batteryhas
power or not
Immediately shutdown
after booting
Failure Cause
Can display,
but all operationsare valid
The instrument program
is disordered
Solution
Replace or rechargethe batteries
Check the batteries are
installed correctly
Reboot
Cannot charge Using did not use
rechargeable batteries Reinstall the rechargeablebatteries
Garbled Incorrect reset Reboot
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Detail Parameters
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MT-7601
Measurement Range
Wavelength cal.
Resolution
Accuracy
Linearity
Detector type
Fiber optic adapter
Power Display Units
Response range
Freq. Identification
Battery Type
Ref
Battery lifetime
Key tone
Backlight
Automatic power off
Waterproof
Operate temp.
Storage temp.
Relative humidity
Size
Weight 180g(W/O battery)
165mm*80mm*35mm
<90% No dew
-20 ~+70
-10 ~+60
Can prevent small splash
>100H
Yes
Yes
Yes
10 min.(Can be cancelled)
270Hz/1KHz/2KHz(Optic power>-30dBm)
700~1700nm
dBm,mW,uW
FC/SC/ST & 2.5mm Universal
InGaAs
2%
850nm,1300nm,1310nm,1490nm,1550nm,1625nm
+6~-70dBm
+6~-60dBm(0.01dB) -60~-70dBm(0.1dB)
AA/LR6 1.5Vx2 pcs
(1550nm,1310nm) 0.2dB/(1490nm,1625nm) 0.3dB/(850nm,1300nm) 0.4dB *
Test conditions: -10dBm@1550nm23 2 degrees Celsius, 40%~60% humidity, using standard test fiber
* +10~+5 dBm and -62~-70dBm measurement data for reference
Application fiber type 9/125 m~62.5/125 m

Optical Power Meter
MT-7601

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