Dataman 520 Series - Manual (Page 6)

Spectrum analyzer
User’s guide
warrant, guarantee or make any representations regarding the use, or the results of
use, of the SOFTWARE, device or written materials in terms of correctness, accuracy,
reliability, currentness, or otherwise. The entire risk as to the results and performance
of the software is assumed by you.
Precautions (DATAMAN 520 and 570 series)
Please follow these recommendations to avoid any possible problems that might occur
while using the oscilloscope of DATAMAN 520 or 570 series:
- read the User’s Guide
- always connect the device using the cable which is part of the package. If it is not
possible, always use a USB 2.0 specification cable.
- never connect a signal with absolute voltage higher than 200V to the measuring
inputs. This value is valid for frequencies lower than 100kHz. Over this frequency,
the voltage lowers with raising frequency. For example frequency 200kHz of 100V,
400kHz of 50V is the limit. However we do not recommend connecting a voltage
higher than 50V, because touching it can be dangerous.
- never connect a voltage lower than –10V and higher than +13V to the external
triggering input (frequency lower than 20kHz). Over 20kHz, voltage lower than -0.5V
or higher than +4V is not recommended.
- never connect a voltage to the oscilloscope ground, it may result in device or
computer damage
- never disassemble the device, since there are no user serviceable parts inside
Precautions (DATAMAN 770 series)
Please follow these recommendations to avoid any possible problems that might occur
while using the oscilloscope:
- read the User’s Guide
- always connect device using USB cable, which is the part of the package.
- never connect voltage higher than 200Vp between the measuring ground and the
input. This value is valid for frequencies lower than 100 kHz. Over this frequency, the
voltage lowers with rising frequency. For example voltage of 100Vp with frequency
200 kHz is the limit. You can always connect voltage with peak value up to 4 times
the input range set (32 time the sensitivity in v/div) independent on frequency.
- never connect voltage lower than –10V and higher than +13V to the external
triggering input (frequency lower than 20 kHz). Over 20 kHz, voltage lower than –
0.5V or higher than +4V is not recommended.
- the measuring ground is common for all of the measuring connectors. The voltage
connected to one of these grounds appears also on the other two of them. Do not
connect different voltages to the grounds of the measuring connectors. It can destroy
the measuring instrument and/or the measured device.
- when the voltage above 50V is connected to one of the measuring connector’s
ground, touching the other two of them can be dangerous for your health.
- when you connect the voltage higher then 50V to the measuring ground, please be
sure that the instrument is dry. If you brought the instrument from the colder
environment please wait until it warms up to the temperature of the new environment.
- when the voltage higher than 50V is connected to the measuring ground, for safety
reasons we recommend connect the chassis ground of the instrument (connector on
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