function test {
    [CmdletBinding()]
    Param(
        [string]$string
    )

    $checksumString = $string[-4..-1]
    $checksumBytes = $(
        [System.Convert]::ToByte(($checksumString[2,3] -join ''),16)
        [System.Convert]::ToByte(($checksumString[0,1] -join ''),16)
    )
    [uint16]$checksumValue = [System.BitConverter]::TouInt16($checksumBytes,0)

    Write-Verbose $checksumValue

    $data = $string.Substring(0,($string.Length -4))
    $dataBytes = [System.Text.Encoding]::ASCII.GetBytes($data)
    [uint16]$datasumvalue = $dataBytes | Measure-Object -Sum | Select-Object -ExpandProperty Sum

    Write-Verbose $datasumvalue

    ($datasumvalue + $checksumValue - [uint16]::MaxValue) -eq 0
}