# Method DVB.dvb()->tune()

Method tune

  ``int` tune(`int(2bit)` `lnb`, `int` `freq`, `bool`|`string` `pol`, `int` `sr`)`

Description

  Tunes to apropriate transponder's parameters.

Parameter `lnb`

  DiSeQc number of LNB.

Parameter `freq`

  Frequency divided by 1000.

Parameter `pol`

  Polarization. `0` or `"v"` for vertical type, `1` or `"h"` for horizontal one.

Parameter `sr`

  The service rate parameter.