DSO mobile is a pocket size digital storage oscilloscope fulfills basic electronic engineering requirements. It is base on ARM CortexTM-M3 compatible 32 bit platform, equipped with 320*240 color display, SD card capability, USB connection, and chargeable batteries.
|Display||2.8" Color TFT LCD|
|Analog bandwidth||0 - 1MHz|
|Max sample rate||1Msps 12bits|
|Sample memory depth||4096 Point|
|Horizontal sensitivity||1uS/Div ~ 10S/Div (1-2-5 Step)|
|Horizontal position||adjustable with indicator|
|Vertical sensitivity||10mV/Div ~ 10V/Div (with ×1 probe)|
0.5V/Div ~ 10V/Div (with ×10 probe)
|Vertical position||adjustable with indicator|
|Max input voltage||80Vpp (by ×1 probe)|
|Trig modes||Auto, Norma, Single, None and Scan|
|Test signal||Built-in 10Hz~1MHz (1-2-5 Step)|
|Waveform storage||SD card|
|PC connection via USB||as SD card reader|
|Upgrade by bootloader||via USB|
|Power supply||3.7V Chargeable Lithium battery / USB|
|Dimension (w/o probe)||105mm X 53mm X 8mm|
Green waveform - current signal being monitored
Purple waveform – reference waveform loaded from SD card.
Voltage measure marker V1 and V2 (Dot, vertical) – A voltage measure value between V1-V2 could be displayed.
Time measure marker A and B (Dot line, horizontal) – A time measure value between A and B could be displayed.
Y positions marker (Purple) – Y position center line for adjustment reference
Trigger level marker (Yellow) – Used to set trigger level
Horizontal main menu on top of screen, Navigate by ◄ , ►, adjust by ▲ , ▼
Sync. Mode: When blinking, press ▲ and ▼ to select 4 different synchronization mode: AUTO, NORM, SING, and NONE.
Vertical Scale: When blinking, press ▲ and ▼ to select different level of sensitivity. Total 19 scales are optional from 10mV/Div to 100V/Div. Note 1: If you use scale above 20V/Div, please use probe with attenuation of 10:1). Note 2: If newly set scale does not match reference waveform, the latter will be cleared.
Horizontal sensitivity: When blinking, press ▲ and ▼ to select different sensitivities, from 1uS/Div to 10S/Div total 22 grades. Note 2: If newly set sensitivity does not match reference waveform, the latter will be cleared.
Y position: When blinking, press ▲ and ▼ to adjust the vertical position of the waveform. Press M to hide/activate Y position marker if needed.
Calculation Mode: Auto calculation modes include:
Power supply mode: Power supply by internal battery or USB port. Battery bar will be displayed when powered from internal.
Trigger sensitivity: When blinking, press ◄ and ► to adjust trigger sensitivity, trigger level marker (Yellow dotted area) changes correspondingly.
Trigger Type: When blinking, press ◄ and ► to choose trigger mode of rising edge or falling edge.
Probe attenuation scale: When blinking, press ◄ and ► to choose 1:1 or 1:10 probe.
Save waveform: When blinking, status bar will display “ Save Filexxx”, press ◄ and ► to select file name with xxx = 000-255. Press M to save current waveform on display to SD card.
Load waveform: When blinking, status bar will display “ Save Filexxx”, press ◄ and ► to select file name with xxx = 000-255. Press M to load current waveform to display from SD card.
Note: current version has no file creation function, a FILEXXX.DAT must be prepared by connecting to PC by USB.
Ref. square wave freq.: When blinking, press ◄ and ► to adjust the frequency of reference square wave.
Horizontal position adj.: When blinking, press ◄ and ► to scroll waveform horizontally.
Index Bar: Show current display position of total loaded wavefrom
Time markers.: When blinking, press ◄ and ► to adjust T1 or T2 time measure marker, the time difference ∆T=T1-T2 will be displayed.
Voltage markers: When blinking, press ◄ and ► to adjust V1 or V2 time measure marker, the Voltage difference ∆V=V1-V2 will be displayed.
Trigger level: When blinking, press ◄ and ► to adjust trigger level, trigger level marker (Yellow dotted line) changes correspondingly.
Hold “R/S” Button and press “M” button to save current settings as default.
It’s easy to upgrade firmware with USB bootloader.
1. Download “DfuSe USB Device Firmware Upgrade” from http://www.st.com/stonline/products/support/micro/files/um0412.zip and install. Instruction available at http://www.st.com/mcu/familiesdocs-110.html#Application%20Note.
2. Connect Oscilloscope with PC, press and hold – , switch on power, until oscilloscope displays:
"Please Connect to USB Host!"
"DS0201 Device Firmware Upgrade Ver 1.0"
When PC connection is detected,
"DS0201 Device Firmware Upgrade Ver 1.0"
3. Run “Dfuse Demo” on PC, check (1 , select firmware to be uploaded (e,g."DS0201_FW_V2.00.DFU") at (2)
4. In the next screen, press (1) "Upgrade", when upgrade finishes successfully, status bar will notify (2)
5. Shut down and reactivate power to use new firmware.