> For the complete documentation index, see [llms.txt](https://dev.solid-run.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.solid-run.com/marvell/a38x/sbc-platform/clearfog-gtr-l8-quick-start-guide.md).
# ClearFog GTR L8 Quick Start Guide
## Revision and Notes
| **Date** | **Owner** | **Revision** | **Notes** |
| ----------- | --------- | ------------ | --------------- |
| 21 Oct 2021 | | 1.0 | Initial release |
## Introduction
The following quick start guide provides background information about the [ClearFog GTR L8](https://www.solid-run.com/arm-servers-networking-platforms/clearfog-gtr-a385/#gtr-l8) product.
The guide will give a technical overview about the product and by the end of it you should be able to boot an operating system and begin testing your application.
## Specifications
| | |
| -------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| I/Os | 1 x USB 3.0 |
| Networking | 8 x 1GbE switched LAN supporting 802.3at/af/bt\* (up to type 4) PSE PoE
1 x 1GbE WAN supporting up to 802.3bt type 4 PD PoE
1 x SFP (up to 2.5GbE)
|
| Processor | Marvell ARMADA based A385 Dual core Arm Cortex A9 up to 1.3 GHz |
| Memory & Storage | Up to 2GB DDR3
8GB eMMC
MicroSD
2 x 7 pin SATA
|
| Display | None |
| Misc. | GPIO header
Indication LEDs
User Push Buttons
|
| Development and Debug interfaces | Micro USB |
| Power | 10V – 54V when not enabling PoE PSE \*
48V – 54V when enabling PoE PSE \*
|
| Expansion card I/Os | 3 x mPCIe (1 x mPCIe supports LTE with SIM holder) |
| Temperature | Industrial: -40°C to 85°C |
| Dimensions | PCBA: 238 x 130mm
Enclosure : 253 x 132 x 32mm
|
| Enclosure | Extruded aluminum |
{% hint style="info" %}
(\*) 802.3bt supported only on 4 x RJ45 ports (90W each), 802.3at/af is supported on all 8 ports (30W each).
{% endhint %}
## Block Diagram
The following figure describes the **ClearFog GTR L8** Block Diagram.
## Visual features overview
Please see below the features overview of the connector side of the ClearFog GTR L8.
Print side connector overview of the ClearFog GTR L8.
## Software Setup
#### Cable setup and prerequisites
Here is what you will need to power up the board:
* Linux or Windows PC
* ClearFog GTR L8
* 48V Power Supply (ClearFog GTR L8 has wide range input of 10V-54V, it is recommended to use 48V)
* Micro USB to USB for console, the ClearFog Pro has an onboard FTDI chip.
* IP router or IP switch
{% hint style="info" %}
The ClearFog GTR L8 has a wide range of 10V-54V input power supplies:
* 10V – 54V when not enabling PoE PSE
* 48V – 54V when enabling PoE PSE
{% endhint %}
## Recommended Cables
The following is a list of industry-standard cables, sorted by type, with the necessary compliance requirements that have been proven to work well with the ClearFog product family (ClearFog Base / Pro).
These examples are the cables which SolidRun uses for testing, and should provide enough information to source products from your preferred cable vendor.
* Ethernet cable: Monoprice 24AWG Cat6A 500MHz STP
* USB Cable: SuperSpeed USB 3.0 Type A Male to Female Extension Cable in Black
* SFP connector: GigaLite GE-GB-P1RT-E SFP module with Monoprice 24AWG Cat6A 500MHz STP cable
## Boot Select
Before powering up the board for the first time it is recommended to select the boot media. In order to configure the boot media, please refer to [ClearFog GTR Boot Select](/marvell/a38x/sbc-platform/a388-other-articles/clearfog-gtr-boot-select.md) .
## Booting from an eMMC card
The switches on the boot source selector must be set as follows:
| | | | | |
| -------- | -------- | -------- | -------- | -------- |
| Switch 1 | Switch 2 | Switch 3 | Switch 4 | Switch 5 |
| OFF | OFF | ON | ON | ON |
The following shows how to set the switches on the boot source selector:
{% hint style="success" %}
The ClearFog GTR including [U-Boot](https://solid-run-images.sos-de-fra-1.exo.io/A38X/U-Boot/u-boot-clearfog-gtr-mmc.kwb) into eMMC by default. **Note:** Here can find the U-Boot Binaries - [SolidRun Images](https://images.solid-run.com/A38X/U-Boot)
{% endhint %}
Once you set the switches, you can apply the following for booting from an eMMC card.
**1. Downloading the Debian image**
```
wget https://solid-run-images.sos-de-fra-1.exo.io/A38X/Debian/sr-a38x-debian-buster-20200114.img.xz
```
* For more Debian releases, please visit [Debian Releases for Armada 38X](https://images.solid-run.com/A38X/Debian).
**2. Writing the image to the USB Disk card**
Use the following commands for writing the image to an USB Disk:
```
xz -dc sr-a38x-debian-buster-20200114.img.xz | dd of=/dev/sdX bs=4k conv=fdatasync
```
* For more information, please visit [Flashing an SD Card](/other-articles/flashing-an-sd-card.md) .
{% hint style="info" %}
Note: Plug a USB Disk into your Linux PC, the following assumes that the USB is added as /dev/sdX and all it’s partitions are unmounted.
{% endhint %}
**3. USB Disk insertion**
Please Insert the USB Disk into your device.
**4. Power connection**
Connect your power adapter to the DC jack, and then connect the adapter to mains supply.
**5. Serial Connection**
Please insert the micro USB into your device, then you can refer to [Serial Connection](/other-articles/serial-connection.md) for installing necessary serial connection software in Linux/Windows.
Once you installed the necessary serial connection software, you should be able to see the following:
* In order to be able to log in , please insert “debian” as a username and password as follows:
## SFP Modules
For some SFP modules that were tested on SolidRun A388 Platforms see [SFP Modules: Tested on A388](/marvell/a38x/sbc-platform/a388-other-articles/sfp-modules.md).
## SIM Card Slot
It is possible to utilize a Cellular connection by inserting a SIM card into the SIM card slot. Please observe that a GSM Cellular modem needs to be installed utilizing the mini PCIe connection in order to exploit the cellular connection.
## List Of Supported OS
| **OS** | |
| -------------------------------- | --------------------------------------------------------------------------------- |
|  | [A38X Buildroot](/marvell/a38x/sbc-platform/a388-software/a388-buildroot.md) |
|  | [Yocto](/marvell/a38x/sbc-platform/a388-software/yocto-for-clearfog-platforms.md) |
|  | [Debian](https://images.solid-run.com/A38X/Debian) |
|  | [OpenWrt](/marvell/a38x/sbc-platform/a388-software/a388-openwrt.md) |
## Build U-Boot & kernel from sources
* U-Boot Build - [A38X U-Boot](/marvell/a38x/sbc-platform/a388-software/a38x-u-boot.md)
* Kernel Build - [A38X Kernel](/marvell/a38x/sbc-platform/a388-software/a388-kernel.md)
## Documentation
{% file src="/files/BQ1pBVXitdtgGQxL5thQ" %}
{% file src="/files/F07nLRgFAyGfBmfoqFVA" %}
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