THORLABS PM20 Series Manual de usuario

Fiber Optic Power Meter

PM20 Series

Operation Manual

2020

Version:

Date:

Doc Log:

1.4

09-Mar-2020

M0009-510-606

Foreword

Contents 2

1 General Information 3

31.1 Safety 51.2 Ordering Codes and Accessories 51.3 Parts List

2 Operating Instruction 6

62.1 Operating Elements 82.2 Fiber Connection 92.3 Battery Charging

3 Maintenance and Calibration 10

4 Appendix 11

114.1 Technical Data 124.2 Certifications and Compliances 134.3 Manufacturer Address 144.4 Warranty 144.5 Copyright and Exclusion of Liability 154.6 Thorlabs Worldwide Contacts and WEEE policy

We aim to develop and produce the best solution for your application

in the field of optical measurement technique. To help us to live up to

your expectations and constantly improve our products we need

your ideas and suggestions. Therefore, please let us know about

possible criticism or ideas. We and our international partners are

looking forward to hearing from you.

Thorlabs GmbH

Warning

Sections marked by this symbol explain dangers that might result in

personal injury or death. Always read the associated information

carefully, before performing the indicated procedure.

Please read this advice carefully!

This manual also contains "NOTES" and "HINTS" written in this form.

Attention

Paragraphs preceded by this symbol explain hazards that could

damage the instrument and the connected equipment or may cause

loss of data.

Note

1 General Information

The Thorlabs PM20 Fiber-optic Power Meters is an easy to use, robust and flex-

ible fiber-optic power measurement system with built-in optical sensor.

The PM20 Power Meters feature NIST traceable wavelength calibration over the

specified wavelength range. Please refer to www.thorlabs.com for new ac-

cessories that will enhance the PM20 product line.

The instrument is powered by a 6V, 150mAh nickel-metal-hybrid (NiMH) battery

for long life operation and fast recharging times. The included external power sup-

ply is provided to recharge the battery pack as well as to operate the unit.

1.1 Safety

Attention

All statements regarding safety of operation and technical data in this in-

struction manual will only apply when the unit is operated correctly as it

was designed for.

Use only the power supply that is specified for the PM20 Series.

The PM20 Series must not be operated in wet, damp or explosion en-

dangered environments!

Do not remove covers!

Do not open the cabinet, there are no parts serviceable by the operator in-

side!

Refer servicing to qualified personnel!

Only with written consent from Thorlabs may changes to single compon-

ents be made or components not supplied by Thorlabs be used.

This precision device is only serviceable if properly packed into the com-

plete original packaging. If necessary, ask for a replacement package prior

to return.

Attention

The following statement applies to the products covered in this manual, un-

less otherwise specified herein. The statement for other products will ap-

pear in the accompanying documentation.

This equipment has been tested and found to comply with the limits for a

Class A digital device, pursuant to part 15 of the FCC Rules. These limits

are designed to provide reasonable protection against harmful interference

when the equipment is operated in a commercial environment. This equip-

ment generates, uses, and can radiate radio frequency energy and, if not in-

stalled and used in accordance with the instruction manual, may cause

harmful interference to radio communications. Operation of this equipment

PM20 Series

in a residential area is likely to cause harmful interference in which case the

user will be required to correct the interference at his own expense.

Thorlabs is not responsible for any radio television interference caused by

modifications of this equipment or the substitution or attachment of con-

necting cables and equipment other than those specified by Thorlabs. The

correction of interference caused by such unauthorized modification, sub-

stitution or attachment will be the responsibility of the user.

The use of shielded I/O cables is required when connecting this equipment

to any and all optional peripheral or host devices. Failure to do so may viol-

ate FCC and ICES rules.

Attention

Mobile telephones, cellular phones or other radio transmitters are not to be

used within the range of three meters of this unit since the electromagnetic

field intensity may then exceed the maximum allowed disturbance values

according to IEC 61326-1.

This product has been tested and found to comply with the limits according

to IEC 61326-1 for using connection cables shorter than 3 meters (9.8 feet).

1 General Information

1.2 Ordering Codes and Accessories

PM20A

Silicon Sensor; size 3.6 x 3.6 mm

Power Range -60 dBm to +16 dBm

Wavelength Calibration: 400 to 1100 nm

PM20C

InGaAs Sensor, size Æ2mm

Power Range: -65 dBm to +13dBm

Wavelength Calibration: 800 to 1700 nm

PM20CH

InGaAs Sensor, size Æ2mm

Power Range: -50 dBm to +23 dBm

Wavelength Calibration: 800 to 1700 nm

PMPS12

Power Supply 90 to 264 V AC line voltage to 12 V DC, 0.85 A

with Line Adapters for US, EU, UK

PM20-SC

SC/PC Fiber Adapter Cap with Internal SM05 Thread

PM20-LC

LC/PC Fiber Adapter Cap with Internal SM05 Thread

PM20-SMA

SMA Fiber Adapter Cap with Internal SM05 Thread

PM20-ST

ST/PC Fiber Adapter Cap with Internal SM05 Thread

1.3 Parts List

Inspect the shipping container for damage.

If the shipping container seems to be damaged, keep it until you have inspected

the contents and you have inspected the PM20 Series mechanically and electric-

ally.

Verify that you have received the following items within the package:

1. PM20 Series fiber-optic power meter with FC-PC fiber connector

2. PMPS12 Power Supply 90 to 264 V AC line voltage to 12 V DC, 0.85 A with

Line Adapters for US, EU, UK

3. Operation Manual

If any items are missing or damaged please contact Thorlabs immediately for

return instructions.

PM20 Series

2 Operating Instruction

2.1 Operating Elements

The 8 digit LC Display allows precise 3 digit logarithmic and 4 digit linear power

readings along with units and additional system information.

Figure 1: PM20 Series Front Panel

Operating Keys

Power

The power button switches the instrument on and off. After powering up the

wavelength set value is displayed for 2 seconds.

Auto Shut-Down

Press the Power and the Display buttons simultaneously to enter the shut-down

mode selection. The Display button toggles subsequently 5 minutes auto shut-

down, 60 minutes auto shut-down and manual shut-down mode. Press the Power

button twice to confirm the selection.

2 Operating Instruction

Display

The Display button sets the power reading to linear or logarithmic representation.

If Zero is activated (explanation see Delta button), the Display button toggles

between relative value [dBr] and the absolute values in dBm and W.

Delta

The Delta button enables relative power measurements. The first tap on this but-

ton shows the currently saved offset level. If no offset level is saved, the display

indicates “NO ZERO”. A second tap on this button sets the current power reading

to zero, with dBr unit, and saves the current power value as (new) offset value.

The Display button now toggles between relative value [dBr] and the absolute

values in dBm and W.

Lambda

The Lambda buttons display and set the measurement wavelength.

Note

For accurate power reading it is mandatory to enter the correct wavelength value,

as the optical power is calculated from the wavelength and the appropriate indi-

vidual sensor responsivity at this wavelength that is stored in the non-volatile

memory of the power meter.

Press the up or down button to display the current wavelength setting.

Keep an arrow button pressed or toggle it to set a new wavelength.

After releasing the up or down button, the display automatically jumps back to the

power reading and the new wavelength is stored and also present after a new

power up.

PM20 Series

2.2 Fiber Connection

Figure 2: PM20 Series Top Panel

Fibers with connectors of most available industry standards can be connected to

the optical input on top of the PM20 Series. The unit comes with a FC adapter.

The threaded fiber adapters are easily changeable; please refer to our website

(https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=906) for the com-

plete range of available fiber adapters .

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