# Four-channel oscilloscope, and much more

> Eyes17 comes with an application whose default User Interface is an enhanced four-channel oscilloscope.

- Link to YouTube videos [https://www.youtube.com/channel/UCIHUjpPn9wf1aHElqLn1RJQ]

- The Oscilloscope program mainly functions as a four channel oscilloscope, with inputs A1, A2, A3 and MIC.

- Adjust the x-axis limit of the graph, using the Timebase Slider, generally to view several cycles of the waveform.

- If the waveform is not stable, select the proper trigger source. If needed adjust the Trigger level.

- The traces can be saved to a file, in text format. It is possible to take the Fourier transform and view the frequency spectrum of the input waveform.

- The oscilloscope program also has control/monitor widgets on the right side panel to access most of the ExpEYES features.

- The inputs A1, A2, A3 and the resistance connected to SEN are measured and displayed every second. But these readings are meaningless when AC inputs are connected.

- For sinusoidal AC inputs, enable the Check-Button in front of the channel widget to view the Peak voltage and frequency.

- The ExpEYES Input/Output terminals are briefly described below.

## Output Terminals

- CCS: Constant Current Source. On/Off using Check-Button Enable CCS.

- PV1: Programmable Voltage, range. Can be set using the Slider or Text-Entry widget

- PV2: Similar to PV1, but ranges from to

- SQ1: Square Wave Generator, swings from to . Frequency can be set from to .

- SQ2: Same as SQ1, but available as an option of WG.

- OD1: Digital Output, voltage can be set to or .

- WG: Waveform Generator. Frequency from to . Amplitude can be set to , or . Can be set to Sine, Triangular or Square. In Square mode the output is on SQ2, with to swing.

- -WG: Inverted output of WG

## Input Terminals

- IN1: Input for measuring Capacitance. Push-Button provided for measurement.

- IN2: Input for measuring frequency of digital signals, swinging between and to . Push-Button provided for measurement.

- SEN: Input for measuring resistance. This point is internally connected to via a resistor

- A1: Voltage measurement point, functions as voltmeter and oscilloscope. Maximum Input range , range is selectable from pull down menu. AC/DC mode selection by slider switch on the box.

- A2: Same as A1, but no AC coupled mode

- A3: Voltage measurement in . Small signals can be amplified by connecting a resistance from Rg to Ground

- MIC: Condenser microphone input, output appears as the fourth channel of the oscilloscope

- Rg: Gain resistor for A3. . For example connecting a resistor gives a gain of .