Wireless Scope Meter, model VM10ac, Oscilloscope with Digital Multi-meter

 

Copyright 2019 Micro Seven, Inc.

 

Micro Seven, Inc. â's model VM10ac is a peripheral device that transmits measurement result to BLE controller like a smartphone. After an app is opened, VM10ac connects to a BLE controller automatically when the device ID on the app matches with VM10ac device ID. The device ID is a 4-digit code that is unique to each VM10ac.

 

When the app is closed, BLE connection is turned off. When the app is opened again, “Restart” or “scanning” button is required to be pushed. VM10ac and BLE controller or smartphone app provide remote measurement of DMM functions and oscilloscope via wireless BLE. Received data and/or trace information may be stored in the BLE controller by manually or automatically.

 

Various trigger methods are included. Measurement result including DMM readings and oscilloscope trace data may be obtained continuously with or without storing in app memory with measurement date and time.

 

 

 

 

MICRO SEVEN-Model VM10ac, Scope Meter, oscilloscope/Digital Multi-meter is shown in above picture.



 

Screenshot of smart phone app for VM10ac is shown above.

Features

-       Remote measurement of digital multi-meter and oscilloscope via BLE wireless and smart phone app

-       Manual or automatic start/time interval mode and recording data/traces

-       Banana jacks

-       Floated power supply measurement

-       Optional internal rechargeable battery

Specifications:

Device ID: 4-digit alphanumeric like “DD29”

Note: The BLE connection to BLE controller and data communication require matching of the programmed Device ID in the app and Device ID that is advertised by VM10ac.

Oscilloscope signal bandwidth: 5kHZ

Measurement ranges:

DC volt and RMS: +/-200mV, +/-2.000V, +/- 20.00V, +/- 200.0V, +/- 500V, +/- 1 % (for DC volt), and +/- 3% for 50Hz to 5 kHz in RMS measurement

Oscilloscope input range: same as DC volt except +/-100mV, +/-1.000V, +/- 10.00V, +/- 100.0V, +/- 500V for battery option

Resistance: 2.000k ohm, 20.00k ohm, 200k ohm, 2.000meg ohm, +/- 5%

True-RMS measurement including DC+AC component

Measurement inputs:

Common input may be elevated up to +/- 120VRMS with respective to the earth ground with provided AC/DC power adapter.

Front-panel controls:

Power indicator, steady when the power is on, or flashing when BLE connection is made.

SW4: Power switch

J1, J2: Input terminals for volt DC, volt AC, and resistor

Rear panel description:

12VDC input connector (from 117V AC/DC adapter)

Trace display or oscilloscope display:

Time base: 100ms/div, 50ms/div, 20ms/div, 10ms/div, 5ms/div, 2ms/div, 1ms/div, 0.5ms/div, 0.2ms/div, 0.1ms/div, 50μs/div, or 20μs/div where ‘TB<’ for slower time base (maximum 100ms) or ‘TB>’ for faster time base (minimum 20us)

Wireless standard: IEEE 802.15.1 transparent UART operation, BLE operation

Optional battery operation with Ni-Cad battery pack:
  Power: 2.5 hours of battery operation

  Recharging time: 24 hours

  Charge/discharge cycles: 100 times minimum

AC/DC Adapter and battery charger: 12VDC unregulated, 200mA maximum  with 117VAC input power

Dimensions: 19 cm (4") W x 4.5 cm (1.75") H x 10 cm (7.5") L

Weight: 500g (1.1 lbs.)

Environmental: Operating temperature: 0 to 35 degree C, Humidity: 85% RH at 35 degree C

Warranty/Service: one year limited warranty. No warranty if any factory seal is broken. Service is performed at the factory.

Calibration procedure: included in the app

Other VM10 models:
VM10a: everything on VM10ac and stand-alone voiced DMM with recording with your own voice.

VM10: RS232 interface version without wireless interface

Optional features:

1.    International AC/DC power adapter for 90-250VACRMS and 50/60Hz power input

2.    Rechargeable battery

The input waveform and its RMS value is displayed in the screenshot below with time, date, and year, time-base, vertical scale factors, and trigger line (red line). The screen may be saved by manually or automatically under the Auto Run mode.


App operation:

Displaying “Scanning” will be changed to “Go/Run” when VM10AC is scanned, found and connected automatically to smart phones. Push “Go/run” button every time measurement is required unless “Auto” is enabled for continuous operations. The “Auto” mode may be stopped when either “Auto” mode is disabled, or “Stop” button is pushed.

Automatic operation with your own timing

App Mode selection of Meter, Scope, or Scope Meter

Select “Meter” for digital measurement of DC volt, RMS, or resistance measurement. Note that RMS measurement provides RMS value of AC and DC components of input voltage.

“Scope” mode provides oscilloscope function of input voltage for DC volt and RMS modes. Also select Time Base, Range, and Trigger mode, and color line trace display.

The “Scope Meter” mode provides digital measurement and trace display. One of the Scope Meter application is for measurement of AC power input which displays sine wave and 117VAC RMS value.

App Mode Trigger point adjustment for trace measurement:

Swipe the screen once and red-dotted trigger point is shown. If you swipe up or down, the trigger point is moved slowly. If you swipe continuously, the trigger point may be moved quickly. The trigger point is for “Trigger +”  and “Trigger –“.

App Mode Trigger selection of “Free Run”, “Trigger +”, “Trigger –”, “P-P Auto”, “Peak”,  “Valley”,  “One Shot+”, or “One Shot-“.

Note:  Trigger selection except “One Shot” requires repetitive input waveform.

“Free Run” with no trigger.


 

“ Trigger +” starts trace display when input voltage moves passing the trigger point upward. Also see the “Pre-trigger” mode below for displaying event before trigger point.

Image-1(1)

“ Trigger -” starts trace display when input voltage moves passing the trigger point downward. Also see the “Pre-trigger” mode below for displaying event before trigger point.

“P-P Auto” starts trace display when the input voltage moves half point between peak and valley of input voltage at positive going direction.

“Peak” starts trace display when the input voltage reaches its peak.

“Valley” starts trace display when the input voltage reaches its valley.

“One Shot+” trace display starts when input signal crosses trigger level upward. To abort trace measurement, push “Stop”.

 “One Shot-” trace display starts when input signal crosses trigger level downward. To abort trace measurement, push “Stop”.

Caution: “One Shot+” or “One Shot-“ with pre-trigger mode is intended for displaying signals that do not pass the trigger level initially. Erroneous displays of sine wave may result when “One Shot+” or “One Shot-“ with pre-trigger mode is selected.

 


“One Shot-” trace display starts when input signal crosses trigger level downward. To abort trace measurement, push “Stop”. Pre-trigger is enabled.

Caution: “One Shot+” or “One Shot-“ with pre-trigger mode is intended for displaying signals that do not pass the trigger level initially. Erroneous displays of sine wave may result when “One Shot+” or “One Shot-“ with pre-trigger mode is selected.

App Mode Pre-trigger mode:

“Pre-trigger’ selection is displayed when operating mode is only in “Scope” mode even though pre-trigger selection is effective for “Scope Meter” mode also.

The Pre-trigger mode when enabled starts trace display few divisions previous to Trigger selection for all triggering mode except “Free Run” mode.

App Mode Measurement storage: Smart phone screen showing measurement data and traces are stored. When you want to store the measurement data and/or trace display, enter file number which is located between “MEM” and “POP” for file number 0-9999 and push “MEM”. If want to see any stored measurement data and/or trace display, push “POP” with corresponding file number. The date and time are also stored along with amplitude/screen division, time base data, and trigger point data.

App Mode Color traces:

Different color traces may be shown on screen after incrementing colors to maximum eight colored traces.

App Mode Trace memory operation:

MEM: stores measurement and trace data in a file that is shown in a button between ‘MEM’ and ‘POP’.

POP: shows stored measurement and trace data on screen. Swipe the screen for returning to previous screen with real time data.

App Mode Measurement mode:

Meter: for digital multi-meter function

Scope: for oscilloscope function

Scope Meter: for oscilloscope function with digital multi-meter function primarily for RMS measurement

App Mode Operating Screen Changes:

The Normal Mode screen may be changed to “Auto Run” set-up, or “Calibration” for VM10ac.

MICRO SEVEN, INC.®

Address:

Micro Seven, Inc.
1095-K N.E. 25th Ave.
Hillsboro, OR
97124, U.S.A.
               

Phone: 503-693-6982, Fax: 503-693-9742

Send your e-mails to: sales@microseveninc.com

www.microseveninc.com