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.
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.
“ 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”.
“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