Explorer 540 Satellite Terminal Integration

In areas with no terrestrial internet options, a satellite internet connection may be useful. The Cobham Explorer 540 is a BGAN satellite terminal designed for machine-to-machine installations, such as with a DigiSnap Pro. It is designed to be powered by DC and has an ethernet connection which allows it to be interfaced with the DigiSnap Pro.

Physical Connections

A custom ethernet and power cable can be ordered with your Cyclapse system to power the Explorer 540 with the DigiSnap Pro.

Ethernet and Power Wiring

Satellite Terminal Settings

Follow the Explorer 540 user guide to setup and aim the satellite terminal. The best way to aim is by using a laptop computer to read the signal strength values while slowly panning the southern sky in both azimuth and elevation axes (if you are in the southern hemisphere, pan the northern sky).

Configure the terminal like the following to automatically establish an internet connection when powered:

DigiSnap Pro Settings

Harbortronics can supply a custom power cable to allow the DigiSnap Pro to power the satellite terminal. To conserve power, configure the DigiSnap Pro to only supply power to the satellite terminal when the network hardware is active:

  1. Open the DigiSnap Pro app
  2. Tap Device Settings
  3. Under Output Signals > Switched Battery, choose "Network board powered on".

Transfer Settings

Optionally, you may want to limit the number or size of transferred images, preserving the full resolution images on the camera or local USB drive.

Only Upload 1 of every N Images

Use the decimate feature to only upload one image for every 5, 10, 25, 50, 100, 250, or 500 taken.

  1. Open the DigiSnap Pro app
  2. Wait for the Network Settings option to become available, tap it.
  3. Under the Network Storage section, find the Image Decimate field and set it to the desired value.

Upload Lower-Resolution Images

To resize images before upload, use the Transfer Size feature.

  1. Open the DigiSnap Pro app
  2. Wait for the Network Settings option to become available, tap it.
  3. Under the Network Storage section, find the Transfer Size field and set it to the desired value.

Transfer Size Options

Image Size SettingDimensionsTypical File Sizes
Full size original image from camera 700 KB - 30 MB
depends on camera and camera settings
Large Thumbnail larger dimension limited to 1920 pixels 136 KB - 786 KB
Medium Thumbnail larger dimension limited to 1080 pixels 48 KB - 86 KB
Small Thumbnail larger dimension limited to 160 pixels 7 KB - 64 KB

Image file sizes will vary based on camera model, camera settings, DigiSnap Pro image size setting, and photo subject. To be sure you will be within your data quota, take one day of test shots on site, sum the file sizes on your FTP server for that day, and multiply that by 35 to estimate your required monthly data quota.