Ok, translation is enable by default by a pattern match. I think that I understand this, but my problem is:
That I get a string in hexadecimal but the snmpget doesn't detect the string as hexadecimal output.
That is the reason, why I get a confused output. On the console under unix I can use snmpget -Ox and that works fine. But now I want use this option for my get-request only in perl.