Click or drag to resize

3D

The 3D probe is a powerful tool that can be used to visualize electric field, magnetic field, electric current, or air conductivity on the FDTD domain lattice. It is similar to the animation probe, but the 3D probe allows users to visualize volumes and cut planes rather than surfaces.

Instructions

  1. ClickField Probe Image 16 white Field within the Probes section under the EMA3D tab in the ribbon. Then select 3D from the drop-down menu.

    2. bulkdata probe 1

  2. In the Properties Panel, adjust the probe field type and time properties as desired.

    3. bulkdata probe 2

  3. Two options for setting the probe will appear in the top left of the model window. The top, default optionDrag Box Image 16 defines the integration boundaries of the field probe using a drag box with directional arrows. The second optionSelect Body Image 16 defines the integration boundaries of the field probe based on a selected body.

    4. box probe 0

  4. Click OKCheck Image 16 to complete the probe definition. A series of green points will appear indicating the lattice point locations (where probe measurements will be taken) included within the probe boundaries.

  5. Adjust the definitions of the probe at any time by right clicking it within the Simulation Tree and selecting Edit from the pop-up menu.

    6. bulkdata probe 7

  6. To visualize the 3D Probe results, right click the 3D Bulk Data probe within the Results node in the Simulation Tree and select Visualize 3D. Then select the time steps to visualize in the pop-up window.

    7. bulkdata probe 8
    bulkdata probe 13

  7. In the bottom right corner of the model window, select the3d probe contour 16 Contours button to view the contoured volume. Select the3d probe cutplane 16 Cut Plane button to view a cut plane through the contoured volume.

    8. bulkdata probe 1

  8. The contours, fields, and time step plotted can be adjusted in the Settings panel that appears at the right side of the model window.

    9. bulkdata probe 12
General
Options

Entry

Meaning

Name

Name of the probe.

Probe Type

Field quantity to probe.

Bounds
Bounds Options

Entry

Meaning

Min - X

Minimum x location of the probe.

Min - Y

Minimum y location of the probe.

Min - Z

Minimum z location of the probe.

Min - X

Maximum x location of the probe.

Min - Y

Maximum y location of the probe.

Min - Z

Maximum z location of the probe.

Time
Time Options

Entry

Meaning

Start - Match Domain

Match the start time to the FDTD domain (blue = True).

Start - Value

The probe start time.

Step - Match Domain

To which domain to match the probe time step: Domain matches the probe time step to the FDTD domain time step. Frequency sets the probe time step such that it captures up to the highest supported frequency of the domain (this time step is coarser than the Domain time step and results in smaller files). False allows the user to set the probe time step manually.

Step - Value

The probe time step.

End - Match Domain

Match the end time to the FDTD domain (blue = True).

End - Value

The probe end time.

Down Sampling
Down Sampling Options

Entry

Meaning

X

Down sampling X

Y

Down sampling Y

Z

Down sampling Z

EMA3D – © 2026 EMA, Inc. Unauthorized use, distribution, or duplication is prohibited.