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 |
| Display Resolution | 320×240 |
| Display Color | 65K |
| 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 |
| Input impedance | >500KΩ |
| Max input voltage | 80Vpp (by ×1 probe) |
| Coupling | DC |
| Trig modes | Auto, Norma, Single, None and Scan |
| Functionalities: |
|
| 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,
"Firmware Upgrading..."
"Please Wait"
"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.
