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 riskof fire orelectric shock, donot expose thisapparatus to rainor moisture.
Toavoid electrical shock,do not openthe cabinet. Referservicing 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 suddentemperature changes. Donot attempt touse the driveimmediately after movingit 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 outbatteries for atleast an hour.
Storage
When long timeno use,must takeout the batteriesto avoid destroyingthe device.

Description
LCD
Power Button
1
2
3
4
5
6
InGaAs detector
Wavelength/Unit Select Button
REF setting Button
Charging Socket
1
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
5
Press button will turnon the meter .
Press button againfor two seconds or more will
turn off themeter.
This meter hasa power-saving function,normal
boot and tenminutes without any operation, the devicewill automatically
shut down. Ifyou need to shield this functionand enable the meter keeps
on working, onlyneed to press the button and holdwhen you
boot the instrument.After two seconds, the meterdisplay will show "PERM"
which means permanentpower on.

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

Wavelengths
7
According tothe project, we need to measure
optical signals ofdifferent wavelengths. Then we need
to select acorresponding wavelength to measure the
optical power.If the wavelength needs to bemeasured
does not matchwith the wavelength we select onthe
optical power meter, it willlead to themeasuring values
meaningless.
Press button after booting,the meter will
switch to themeasure status of a corresponding
wavelength successively,and show onthe display.
This series ofoptical power metercalibration measured
wavelength are:850nm, 1300nm,1310nm, 1490nm,
1550nm,1625nm.

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Wavelengths
The instrument hasbeen equipped withactivated
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 shows NO, which meansthe
wavelength identification functionhas been turned off;
but if thecenter of the screen shows EN,which means it
turned on. Whenthe wavelength identification function
starts, and connectswith laser source which has wavelength
identification function, theoptical power meter can identify
the current outputwavelength and automatically switch to
the wavelength tomeasure.

Unit
9
button can beused to change the
display unit ofthe measurement data to meet the
different requirement. Whenpress and holdthis
button for twoseconds, the display will successively
show the dBmvalue and mW/uW value .
The numeric relationshipbetween mW value and dBm valueis:
10lg(mW)=(dBm)

Reference
10
Button is usedto set or check the
reference value. Shortpress this button, the display
will show 'REF'and the dBm value which hasbeen
set up. Whenlong press for two seconds ormore,
the device willuse the current measurements to
overwrite the originalsetting value and set it asa
new preference value.Meanwhile the 'REF' sign
will flash threetimes on the display.After that will
show the difference(dB).
(Each wavelength canset their own reference 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 than 20%

Charge
5V_500mA
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The instrument hasa charging function. When use rechargeable
batteries and alow battery indicationshows on the instrument, you
should promptly shutdown it andrecharge. Long time undervoltage
will shorten the lifetimeof the rechargeable battery.
Connect theAC adapter tothe device correctly, it can charge
Automatically. Besides,computer USB port can also be used for
charging. The batteryremaining indicator keeps flashing during
charging. It will stopwhen the charging isfinished. The battery
has finished thefast recharge andcan be used directly. Ifyou do not
stop recharging atthis time, thein strument will continue the trickle
charge state, usingsmall current tosupply natural discharge. But this
process is not morethan 48 hours.
The instrument canstill be used while charging. But do not plug in
the ACadapter when itis not rechargeable battery inside, or it will
cause a hightemperature and combustion,even explosion.

Meter Maintenance and Calibration
General maintenance
Optical fiber connectthe adapter should avoid contacting withhard objects and keep clean.
Should be storedin a dry and ventilated placeto avoid moisture.
When un usefor long time,should remove the batteriesbefore 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
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
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
+10~-70dBm
+10~-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

Optical Power Meter
MT-7601