External Connections - pico Technology PicoScope 4000 Serie Guia De Inicio Rapido

PicoScope 4444 High-Resolution Differential Oscilloscope
WARNING
Signals exceeding the voltage limits in the table below are defined
as "hazardous live" by EN 61010. To prevent electric shock, take all
necessary safety precautions when working on equipment where
hazardous live voltages may be present.
Signal voltage limits of EN 61010-1:2010
±70 V DC
WARNING
To prevent injury or death, the oscilloscope must not be directly
connected to hazardous live signals as defined by EN 61010. To measure
such voltages, use a differential probe specifically rated for this use, such
as the PicoConnect 442 1000 V CAT III differential probe.
CAUTION
Exceeding the overload protection range of the oscilloscope and
its recommended accessories can cause permanent damage to the
oscilloscope and other connected equipment.
If the signal voltage exceeds the measurement input range, the PicoScope software
displays the red overrange indicator
the message "Channel overrange". A smaller version appears next to the vertical
axis of the affected channel. The waveform will be clipped: no data outside the
measurement input range will be shown. In the software, increase the input range
of the affected channel until the indicator disappears.
If the common-mode voltage of the differential input exceeds the scope's common-
mode input range, the yellow common-mode overrange indicator
the messsage "Common-mode overrange". Again, a smaller version appears next
to the vertical axis of the affected channel. Exceeding the common-mode input
range of the scope causes inaccurate measurements and can lead to severe signal
distortion.
1.2.3 Grounding
WARNING
The oscilloscope's ground connections through the USB cable and
through the ground terminal are for measurement purposes only. The
oscilloscope does not have a protective safety ground.
2
33 V AC RMS ±46.7 V pk max.
in the top left corner of the display, with
appears, with
Copyright © 2017 Pico Technology Ltd. All rights reserved.
WARNING
Never connect the ground terminal (chassis) to any electrical power
source. To prevent personal injury or death, use a voltmeter to check
that there is no significant AC or DC voltage between the oscilloscope
ground and the point to which you intend to connect it.
CAUTION
Applying a voltage to the ground input is likely to cause permanent
damage to the oscilloscope, the attached computer, and other
equipment.
CAUTION
To prevent measurement errors caused by poor grounding, always use
the high-quality USB cable supplied with the oscilloscope.
1.2.4

External connections

WARNING
To prevent injury or death, only use the power cord and adaptor
supplied with the product. These are approved for the voltage and plug
configuration in your country.
USB connection
Voltage (V)
USB 3.0 5 V
Depending on the combined power requirements of the accessories connected
to it, the PicoScope 4444 can operate with or without a DC power input. If the
USB connection alone is insufficient to power all the accessories connected, the
PicoScope 6 software will prompt you to connect the DC power supply.
1.2.5 Environment
WARNING
To prevent injury or death, do not use in wet or damp conditions, or near
explosive gas or vapor.
CAUTION
To prevent damage, always use and store your oscilloscope in
appropriate environments, as specified below.
Storage
Temperature –20 °C to +60 °C
5% to 95% RH
Humidity
(non-condensing)
Quick Start Guide
DC power input
Current (A pk) Total power (W)
3 A 15 W
Operating Quoted accuracy
0 °C to 45 °C 15 °C to 30 °C
5% to 80% RH
N/A
(non-condensing)
DO282-2