How to bind to AD without displaying the Distinguished Name

Requirement:
Bind to Active Directory domain and if successful continue otherwise output 
error.  

Problem:
The problem here is when I bind to the domain the Distinguished Name is 
displayed on the screen.  In the script that I am working on I don't want the 
DN to be displayed.  I have tried the commands "$LDAPDN | out-null"
and 
"[void]$LDAPDN" but they do not actually make the bind to the domain. 
Any 
help on binding to a domain without having it display the DN would be 
appreciated.

Thanks,

Sample Code:
trap
{
    Write-Host "Unable to bind to the domain."
    Write-Debug "$_.exception.message"
    Exit
}
$LDAPDN = [ADSI]("LDAP://$FQDN")
$LDAPDN
Write-Host "Bind to domain $FQDN was successful."