# Waveform View The eGauge waveform view allows the raw amperage and voltage to be visually displayed in an oscilloscope like view. Starting in [firmware version v3.5](https://www.egauge.net/revs/#3.5), this tool can be accessed from the main graph page in **View -> Waveform**. To access this tool, valid credentials to view device data are required. The waveform view works on all modern browsers as well as mobile platforms like Android or iPhone. # Waveform Display overview # ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982588/original/MWGrh1Fz6n1IE0PofTRSk2woC2ZhynOqCg.png?1538594048) --- # 1) Display The main display. Here the selected channels are displayed. The grey divider bar separating the Display from Horizontal Controls can be dragged to enlarge or shrink the main display. This divider disappears on small screens in landscape mode, where there isn't enough height to display the screen and the controls below it. In that case, the entire page becomes can be scrolled. Features include: \- Click and drag in the display to move forward or backward in time (this adjusts the "Time offset" option in Horizontal Controls). \- Mouse-wheel up or down (or two-finger pinch together/apart on mobile) to zoom in our out of the waveform (adjusting both the "Time offset" and "Time base" Horizontal Controls). \- Double click to zoom in on that part of the capture \- Enabling Markers provides additional values. The vertical marker bar can be clicked and dragged to move the marker point along the waveform. \- Click on a waveform to highlight it. When the waveform is highlighted, the actions change: \* Click and drag up and down to change the vertical offset (this adjusts the "Offset" of the waveform's Vertical Controls). \* Mouse-wheel up or down (or two-finger pinch together/apart on mobile) to change the sensitivity of the waveform (adjusting both the "offset" and "sensitivity" of the waveform's Vertical Controls). \- To de-select a waveform, click anywhere in the display that does not have a waveform or marker displayed. The right side of the display will show a small ground symbol indicating the zero-level for that channel. The color of the symbol matches the color selected for the channel waveform: ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982920/original/bOlkN8pp2Q_oHXa0S0__btevG2alEeTIJg?1538595887) If marker "B" is active, "By" will be shown on the right side of the display indicating the horizontal line for the marker "B" y-axis: ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982984/original/RAlCymvIyOyBK_gmXKglb55ITfga6h4hrg?1538596103) The left side of the display will display a "T" indicating the horizontal line for the trigger level. The color of the "T" matches the color selected for the channel waveform: ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982980/original/9t9u4b5wcT3N0tUqt1YbE8BGoLy_6vp2hg?1538596085) If marker "A" is active, "Ay" will be shown on the left side of the display indicating the horizontal line for the marker "A" y-axis: ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982988/original/LugESLVy6CluM5H_fre4ShaBf6_U1Xkdug?1538596137) On the top side of the display, an upside-down triangle indicates the trigger point on the x-axis: ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982997/original/8pOEnCHnRTq6e5Vqk3h14jMQq89bsWl69w?1538596210) If marker "A" is active, "Ax" will be shown on the top side of the display indicating the vertical line for the marker "A" x-axis: ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007983013/original/zJJ2tbZtX2rNctlg8lR-b5KZEUPpL-E16Q?1538596259) On the bottom side of the display, a triangle indicates the trigger point on the x-axis: ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007983029/original/nQqYWpCNlS4zy3DCeHvr2zAlvdWZaPqZzg?1538596354) If marker "B" is active, "Bx" will be shown on the bottom side of the display indicating the vertical line for the "B" x-axis: ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007983041/original/eUHTL35-lx35JpRQLBKmKdSKQc41Bx15LQ?1538596410) If one or more markers are active, the data for the maker values will be displayed on the bottom side of the display: ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007983052/original/9RJOsfJGhZfB1JvVQ88w-EmMjAhLgPn2YA?1538596463) ## Horizontal and Vertical divisions The display is divided into rectangular segments. Each horizontal segment (shown in red) is equal to the "Time base" setting. Here it is 8.2 milliseconds. Each vertical segment (shown in purple) is equal to the particular waveform's "sensitivity" setting. Here it is equal to 50 volts. ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982500/original/ItDKT-Vln-kYBKTwE9F3nvL0NoDR08144w?1538593515) # 2) Horizontal Controls The Horizontal Controls adjusts the displays time axis (x-axis). ## Time base This setting controls the amount of time shown in the display. The up/down arrows can be used to increase and decrease the value, or a number may be manually entered. Each rectangle's length is a single time division. Increasing the time per division allows more of the waveform capture to be displayed. Consequently, decreasing the time per division allows you to zoom into the waveform capture. ## Time offset The time offset setting allows the waveform's time axis to be offset relative to the capture point. Adjusting this value scrolls the display to the left or right. You can click the "0" between the arrows to reset the offset to zero. # 3) Vertical Controls The vertical controls adjust the vertical scaling of the graph, as well as certain aspects of the waveforms being displayed. The "Select Channels" button in the upper right hand corner of the section provides a list of configured and available channels to view in the display. Below describes each function of the vertical control: ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982240/original/aTdlpnCZVWrxxXboBL7uzW4-nPJirNW0tA?1538592399)
**Symbol** | **Description** |
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982252/original/Yj39e1HFefCyn0ylEJu1VgHYOVD3FNrDew?1538592460) | Channel name. |
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982257/original/MA5gJu7hiL2PZrRPrMQxg0nre7vf9v2cuA?1538592501) | Toggle visibility. When hidden, symbol changes to a slash over the eye. |
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982322/original/YzQ039M4U6OwPBoNJIGm-Fe96tKqFTcC1A?1538592594) | Negate waveform polarity. When negated, symbol changes to a negative sign. |
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982329/original/m8xQuQD7qD1My_dx4nymIUObej43InP5xg?1538592613) | Change waveform color. |
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982331/original/SIzp4pmlN7ci1fDgssSixyJ42Rr7zBJXDg?1538592625) | Autoscale waveform vertical scale. |
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982336/original/4_iwBLLJondMTIrqZ8cSDtNIWi2U-9syhQ?1538592661) | Remove channel from display. |
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982859/original/w-TK2rzWuNyPjOeGFxjUtvAWzfQKfYri4w?1538595512) | Capture process is not running. Press to begin process. |
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25007982864/original/3EPmBKNuTULL2eicnWskk6HaVzj9jNWhDA?1538595543) | Capture process is active, display is updating or waiting for the trigger condition to be met. Press to stop updates and halt the capture process. |