OPERATION
• Connect the USB plug of the USB power meter, e.g with the USB socket of a USB power
adapter or a computer.
• Connect the USB device to the USB socket of the USB power meter. The data cables are
looped through so that you can use any USB device.
• Voltage and current are displayed alternately.
In this way you can, for example, control the output voltage of the USB power adapter
or the USB port of a computer as well as the current required by the USB device (for
example, the current to charge a smartphone or a tablet computer).
The voltage should be within the range from 5.2....4.8 V. If the display shows a lower
voltage, the current required by the USB device is generally too high.
If this is the case, use e.g. a USB power adapter with a higher output current. Further-
more, preferably use a thicker and shorter USB cable, if possible, if the current values
are high.
CLEANING AND MAINTENANCE
The product does not require any maintenance and should never be disassembled for any
reason.
Clean the product carefully, e.g. with a soft, clean cloth.
Never use aggressive cleaning agents and no chemicals at all for cleaning; these can lead
not only to discolouration, but can also damage the product.
DISPOSAL
Electronic devices are recyclable material and do not belong in the household
waste.
Please dispose of the device, when it is no longer of use, according to current
statutory requirements.
TECHNICAL DATA
Power supply ........................................via USB
Measurement range .............................Voltage: 3 - 7 V/DC
..............................................................
Current: 0 - 2 A
Resolution .............................................Voltage: 10 mV
..............................................................
Current: 10 mA
Accuracy ...............................................± (2% +0.1 digit)
Ambient conditions ............................... Temperature 0 °C to +40 °C; humidity 0% to 75%,
non-condensing
Dimensions ...........................................34 x 53 x 15 mm (D x W x H)
Weight ..................................................16.2 g
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OPERATING INSTRUCTIONS
USB POWER METER “PM-37”
ITEM NO. 1299043
INTENDED USE
The USB power meter is used to measure and display voltage and current at a USB port. For
this purpose, the USB power meter is connected between the USB port (e.g. a USB power
adapter or a computer) and the USB device.
Always observe the safety instructions and all other information included in these operating
instructions.
This product complies with the applicable national and European requirements. All names of
companies and products are the trademarks of the respective owners. All rights reserved.
PACKAGE CONTENTS
• USB power meter
• Operating instructions
EXPLANATION OF SYMBOLS
An exclamation mark in a triangle indicates important instructions in this operating
manual which absolutely have to be observed.
The “arrow” symbol is used where special tips and notes on operation are provided.
SAFETY INSTRUCTIONS
The warranty/guarantee will be void in the event of damage caused by failure
to observe these operating instructions! We do not assume any liability for
any resulting damage!
We do not assume any liability for material and personal damage caused by
improper use or non-compliance with the safety instructions! In such cases,
the warranty will be null and void.
• The unauthorised conversion and/or modification of the product is not permitted
for safety and approval reasons (CE). Never dismantle the product.
• The product is not a toy and should be kept out of the reach of children.
• Never overload the product. For more information about the admissible voltage/
current range, see the chapter “Technical Data”.
• The product must not be exposed to extreme temperatures, strong vibrations or
heavy mechanical stress. The product must not get damp or wet.
• The manufacturer does not accept any liability for incorrect or inaccurate readings
or any consequences resulting from such readings.
• Handle the product with care; it can be damaged by impacts, blows, or accidental
falls, even from a low height.
• Do not leave packaging material carelessly lying around. It may become a dan-
gerous plaything for children!
• If you are not sure about the correct operation or if questions arise which are not
covered by the operating instructions, please do not hesitate to contact our techni-
cal support or another specialist.
VERSION 03/15
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Legal notice
This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in electronic data
processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited. This publication represent
the technical status at the time of printing.
© Copyright 2015 by Conrad Electronic SE.
