NAME

       psout - Export PIB Prescalers

SYNOPSIS

       psout [options] file [>stdout]

DESCRIPTION

       Export  the  prescaler  section  of  a  PIB file as an amplitude map suitable for input to
       program psin or the Qualcomm Atheros Windows Device Manager.  Prescalers are stored in the
       PIB in binary format but the amplitude map is in text format so that values may be changed
       using an ordinary text editor.  Program psin can be used to import an amplitude  map  into
       the original or another PIB file.

       This  program is part of the Qualcomm Atheros Powerline Toolkit.  See the AMP man page for
       an overview and installation instructions.

OPTIONS

       None.

ARGUMENTS

       file   The name of an Atheros Parameter Information Block (PIB) file.  This  file  is  not
              modified.  By convention, PIB files have a .pib extension but this program does not
              enforce that convention and does not make  any  assumption  based  on  filename  or
              extension  but  the  program  will  reject invalid PIB files.  Only one filename is
              permitted on the command line.

FILES

       An amplitude map consists of 1155 frequency-amplitude pairs.   Each  pair  consists  of  a
       decimal  index  and  a  hexadecimal  scaler.  The index represents a frequecy from 1.8 mhz
       through 30  mhz.   The  scaler  represents  the  amplitude  attenuation  applied  at  that
       frequency.  The frequency and attenuation are computed as follows.

            frequency = 40.96 * (index + 74)

            index = (frequency / 40.96) - 74

            decibels = 20 * log10 (scaler / 256)

            scaler = 256 * pow (decibels / 20)

EXAMPLES

       The  following  example  prints  the  prescaler  section  of  file abc.pib on stdout as an
       amplitude map.  The output has been abbreviated here to save space.  A single comment line
       identifies the prescaler source file.  Output may be directed to a text file, edited using
       a text editor and read into the same or another PIB file with program psin.

          # psout abc.pib
          # file: abc.pib
          00000000 00000000
          00000001 00000000
          00000002 00000000
          00000003 00000000
          ...
          00000027 000000D0
          00000028 000000D0
          00000029 000000D1
          00000030 000000D1
          ...
          00000214 00000000
          00000215 00000000
          00000216 00000000
          ...
          00001155 00000000

       The next example copies prescalers from file abc.pib to def.pib using a command line pipe.

          # psout abc.pib | psin def.pib

DISCLAIMER

       PIB file structure  and  content  is  proprietary  to  Qualcomm  Atheros,  Ocala  FL  USA.
       Consequently, public information is not available.  Qualcomm Atheros reserves the right to
       modify PIB file structure or content in future firmware releases without any obligation to
       notify or compensate users of this program.

       Tampering  with  prescaler  settings may violate national or international electo-magnetic
       emission standards and lead to fines or penalties.  Qualcomm Atheros  shall  not  be  held
       responsible for any consequences of modifications made to prescaler sets provided to their
       customers.

SEE ALSO

       psgraph(1), pskey(1), psin(1)

CREDITS

        Charles Maier