FREETEST Digital Oscilloscope User Manual
Wireless Digital Oscilloscope Datasheet : F28M6D/F28M7D/F21M6D/F21M7D
FREETEST Digital Oscilloscope
F2xMxD Series Summary
Horizontal sensitivity : 1nS/Div~10S/Div
Input impedance ≥1MΩ±2%；
Equivalent capacitance ≤ 20pF±2pF
Measuring range ： ±32V（X1）/±300V（X10）
Tantalum capacitive screen, multi-touch (mobile
phone) operation
Coupling ： AC/DC
Low frequency response ： ≤10Hz
DC gain accuracy ： ±2‰
FreeTest Digital OscilloscopeIt is a wireless digital
storage oscilloscope that Connect Mobile-Phone
with WIFI (currently supports Android) for test and
measurement. It only needs a mobile phone +
charging treasure size wireless oscilloscope to
complete the test anytime, anywhere. Full
dual-channel analog path with built-in
high-energy-density lithium battery and full charge
for up to 5 hours of independent test application.
Small size, easy operation and flexible application
scenarios. The interface is beautiful and supports
DC Vertical accuracy : ±2%
Frequency resolution ≤ 0.1%
Charging voltage ： 5V DC
Endurance ： 5 hours （ 2800mAh ） /7.5 hours
（3600mAh）
Charging time：about 7 hours
Reference signal：1KHz/3.3V
Chinese and English menu
Two-in-one function: use only CHA for higher
sampling rate
gestures; WIFI connection allows you to bring your
own lab all the time. Can meet the basic
requirements of school experiments, home appliance
repair, business travel / field testing, electronic
engineering.
Performance Indicators
2-analog channels
Analog channel bandwidth : 40M~50M
Real-time sampling rate : 160Msps ~ 200Msps
Sampling accuracy : 8 bits
Sampling depth : 3000 points/channel ， 6000
points max
Maximum data cache : 128Mb
Horizontal scanning speed : 10nS/Div~10S/Div
Vertical resolution : 7.5 bit
Vertical sensitivity : 4mv/Div~10V/Div(x1probe)
40mv/Div~30V/Div(x10probe)
Feature
Small size and light weight; length, width and
height: 160mmx84mmx28mm, body weight
about 600g.
Support retina phone screen with resolution
greater than 300ppi.
WIFI Connection，IEEE802.11n& IEEE802.11b/g
Support one key screenshot , video function.
ARM®Thumb®Processor，400M Frequency;
Powerful digital signal processing capability.
Application
Teaching experiment
Maintenance
Outside field testing
R&D and test of Electronic Engineering
General application of laboratory
FREETEST Wireless Digital Oscilloscope V2.0
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Wireless Digital Oscilloscope Datasheet : F28M6D/F28M7D/F21M6D/F21M7D
-
Avoid
fireorpersonal
injury.
-
Use
the
appropriate
power
line.
Please
use
only
-
Correctly
connect
and
disconnect
the
connection
-
Compliance
with
all
terminal
ratings.
To
avoid
-
Do
not
operate
inawet
environment.
-
Do
not
operate
inaflammable
and
explosive
-
please
keep
the
surface
of
the
product
clean
and
-
C
heck
the
existence
of
damage
caused
by
-
Ifitis
found
that
the
packing
carton
or
foam
-
Check
the
whole
machine.
If
the
appearance
of
-
If
there
is
any
damage
to
the
instrument
caused
Functional
examination
-
turnonthe
device
power
switch
to
seeifthe
-
use
the
oscilloscope
probe
to
connect
the
signal
-
Turn
on
the
mobile
WIFI
connection
device,
turn
Parameter
Available：MAX/MIN/Mean/Freq/Vp-p/Avg
Trigger Way: Rising/Descent edge trigger
Trigger Mode：Auto、Single、Require、Normal
Trigger Source：CHA/CHB
External triggering: non support
Automatic Adjustment：Auto/Auto range
Algorithm：FFT/CHA+CHB/CHA-CHB
Storage Space: depending on the user's cell
General safety summary
Read the following safety precautions carefully to
avoid personal injury and prevent any product that is
damaged or connected to this product. In order to
avoid possible danger, please use this product in
accordance with regulations.
the power cord that is specially used for this
product and is certified by the country or region
in which it is located.
correctly. Do not plug or connect the probe or
test conductor to the voltage source. Before
connecting the current probe or disconnecting
phone
Battery：2800mAh/3600mAh
Input Voltage：-32V~32V（x1），-300V~300V（x10）
Charging Connector：Micro-USB
Monitor: color
Screen Size: mobile phone display, consistent
with mobile phone screen.Support One key
screenshot.
Support Video screen function.
the current probe, please turn off the circuit
under test.
fire or electric shock, observe all the ratings and
markings on the product. Before you connect the
product, please consult the product manual first
to find out the detailed information about the
rating.
environment.
dry.
General examination
When you get a new FreeTest wireless oscilloscope, it
is recommended that you check the instrument
according to the following steps:
transportation;
plastic protective pad is seriously damaged,
please keep it until the whole machine and
accessories are tested by electrical and
mechanical properties.
the instrument is broken, the instrument is not
working properly, or the performance test is not
carried out, please contact us.
by transportation, please keep the packing.
Inform the transport department or us that we
will arrange maintenance or replacement.
Perform a quick function check to verify that the
equipment is running normally. Please follow the
following steps:
power indicator is on normal (the initial
equipment may be insufficient and recharged for
a period of time to try again).
to the channel A or B, and connect the
measuring terminal to the 1KHz reference
output point (the other point is the grounding
point).
on the test software, and operate the test
normally.
FREETEST Wireless Digital Oscilloscope V2.0
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Wireless Digital Oscilloscope Datasheet : F28M6D/F28M7D/F21M6D/F21M7D
Mechanical dimension of instrument
Instrument interface description
Interface Description
LED-A: The data acquisition lamp, green and flashing,
represents the function of data acquisition.
LED-S: The battery indicator light is green. When the
electricity is sufficient, the battery will always
shine. The battery will flash slowly at 80%~30%
and flash quickly when the battery is
insufficient. Please charge it in time.
POWER: Power indicator light, red; often at work.
CHARG: The charging indicator is orange; it is always
bright during charging and automatically
extinguished after filling.
Charging Port: Charging interface, using Micro USB as charging
interface, please use official accessories to
charge.
ON/OFF: Switch, turn off the "OFF" side device and work
on the "ON" side device (charging function is
not affected by this switch, it is recommended
to recharge the device when the equipment is
closed).
Status Reset: Status Reset Key, if the device is unable to
connect, use the slender object (toothpick and
other non-metallic objects) to press the button
for one second from the small hole.
1KHz: Equipment calibration reference signal,
frequency is 1KHz, the amplitude is about 3.3V.
GND: Reference ground for equipment calibration.
Channel A/B: Analog signal input channel, the input
frequency range is: 0Hz to 10MHz, the input
voltage range is: + 16V (X10 gear probe can be
from the measuring end, that is, the probe end
joint does not exceed the + 120V signal;
attention: X10 measurement may lead to the
decrease of measurement precision).
FREETEST Wireless Digital Oscilloscope V2.0
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Wireless Digital Oscilloscope Datasheet : F28M6D/F28M7D/F21M6D/F21M7D
More support：
Please scan the following two-dimensional code or access
links to get more information.
：
a. FreeTest Introduction
b. Datasheet
c. Software usage description
d. Latest APP
e. Latest firmware
f. Others
www.fescale.com / www.fescale.com.cn
Functional introduction
FreeTest is the world's leading mobile laboratory equipment
research and development expert, and is committed to
creating a new generation of electronic measurement
equipment for the "industry 4" era. FreeTest is the laboratory
equipment R & D center of Guangzhou flet Precision
Electronic Technology Co., Ltd., the center is composed of a
high quality and rich electronic industry practitioner, with
100% of undergraduate and above education. FreeTest
wireless digital storage oscilloscope is the main product of
FreeTest. After a long period of research and evolution, the
third generation of wireless oscilloscopes have been
introduced. With the extreme stability of the system
performance and excellent signal acquisition function, it can
help users to obtain the most real and detailed measurement
results.
At the same time, the FreeTest wireless digital storage
oscillograph is used by the oscilloscope body as the front end
data acquisition device, and through the built-in Linux system
and the WIFI connection with the mobile phone. The wireless
bandwidth up to 150Mbps can seamlessly display the sample
results before the customer's face; we also specially customize
the custom for the user. The mobile phone operation software
for Android system allows users to use the most popular and
high-performance desktop mobile phones as the client to
perform equipment operation and algorithm processing; at
the same time, the user can introduce the most fluent and
convenient display mode of user experience.
The biggest feature of FreeTest wireless digital storage
oscilloscope is to use WIFI to connect the mobile phone for
operation display; let the oscillograph, the traditional and
important laboratory instrument, get a more humanized
operating interface and have more possibilities. FreeTest has
introduced commercial wireless measurements before the
industry, and the mature multi-stage physical sampling
architecture brings you higher measurement progress, stable
wireless connection, and more than 20 meters of remote
operation and results for you to get the distance.
Full dual channel analog sampling; FreeTest provides you with
the mainstream two independent sampling links, and has a
multilevel physical distributary sampling function that is
superior to the industry mainstream two level sub voltage all
hardware automatic switching. The more precise signal carry
selection provides you with more accurate sampling results.
The 1KHz/3.3V reference source; the mainstream digital
voltage reference signal output based on the mobile test
application optimization, provides you with more debugging
possibilities in addition to accurate calibration signals.
The latest Android software technology automatically
matches your mobile client. The display precision of your
mobile phone determines the degree of the display of the
waveform. It can support the highest 2K screen at present and
bring you Retina Display's measurement display.
The WIFI connects to support the IEEE802.11n&
IEEE802.11b/g protocol; the effective wireless communication
distance is over 20 meters, but you can get the latest test
results even if you are not in the laboratory. This function is
especially suitable for Outfield measurement scenarios, such
as vehicle measurement and maintenance, communication
tower detection, UAV field test and maintenance, etc. So that
you can keep the oscilloscope on your body at all times.
FreeTest Wireless Digital Oscilloscope Using
FreeTestwireless oscilloscope is giving you a more free
measurement environment, and speeds up every stage of
debugging - from the quick discovery and capture of the
exception events, to the search waveform records to find the
concerned events, and then to the analysis of the event
characteristics and device behavior.
Remote high speed waveform capture
If you want to debug the design problem, you must first know
the problem. Each design engineer will spend a lot of time
looking for problems in the circuit. If there is no suitable
debugging tool, this task will take a long time and be very
troublesome.
FREETEST Wireless Digital Oscilloscope V2.0
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