NAME

       weeder - Weeder Solid State Relay Module Controller

SYNOPSIS

       weeder [options] [attenuation]

DESCRIPTION

       Set  or  get  the attenuation level on the Qualcomm Atheros Production Test System using a
       local RS-232 communication port.  Attenuator settings are changed if an attenuation  value
       is  specified.   Attenuator  settings  are  read  and displayed if no attenuation value is
       specified.  The serial port settings must  be  configured  before  running  this  program.
       Settings   are   9600   baud,   no   parity,  8  data  and  1  stop  bit.   See  datasheet
       http://www.weedtech.com/wtssr-m.pdf for more information.

OPTIONS

       -e echo
              Enable or disable echo mode.  The value of echo can be 1=on or 0=off.  Alternately,
              keywords  "on"  and  "off" can be used.  Atheros recommends that you always disable
              echo when using this program to speed relay switching.

       -m mode
              Turn on or off the Device Under Test power.  The value  of  mode  can  be  1=on  or
              0=off.  Alternately, keywords "on" and "off" can be used.

       -o units
              Change relay control module order.  Individual relay control modules are assigned a
              digital address that can be referenced using the UTF-8 letters  "[A-P]"  then  "[a-
              p]".   The  Atheros PTS is configured so that module "B" is activated before module
              "A".  This options lets you specify some other module order.  The default value  is
              "BA" to indicate "B" before "A".

       -p port
              The  name  of the serial port.  On Linux, the name is usually "/dev/ttyS[0-4]".  On
              OS/X, the name is usually "/dev/cua[0-4]".  On Windows, the  name  is  "com[0-9]:".
              The default is "/dev/ttyS0" on Linux and "com1:" on Windows.  If environment string
              "WEEDER" is defined then it takes precedence over the default  serial  port.   This
              option  then takes precedence over either default.  Belkin USB-to-serial cables are
              named "/dev/ttyUSB0" on Linux.

       -w wait
              Wait time in milliseconds.  Serial I/O operation are slow and  a  delay  is  needed
              after  each  write  operation.   Unfortunately, different operating systems require
              different wait times.  This options lets you adjust the time.  The  default  is  10
              milliseconds which should be adequate on most systems.

ARGUMENTS

       attenuation
              The  attenuation  in decibels.  The attenuation may be expressed in decimal, binary
              or hexadecimal when setting attenuator but is displayed in decimal when reading the
              attenuator.  Binary values start with "0b" and hexadecimal values start with "0x".

EXAMPLES

       The  following  example turns the Device Under Test power on and configures the attenuator
       for 72db attenuation.  Option -m is not necessary  if  the  Device  Under  Test  power  is
       already on.

          # weeder -m 1 72

       The  next  example  configures the controller for 42db attenuation.  There is no needed to
       turn the Device Under Test on again because it remains on until turned off.

          # weeder 42

       The next example configures the controller for 56db attenuation and turns the Device Under
       Test off.

          # weeder -m off 56

       The  next  example  displays the current attenuation on the console because no attenuation
       value was specified.

          # weeder

REFERENCES

       Information  shown  above  applies  to  WTSSR-M  Solid  State  Relay  Module   by   Weeder
       Technologies, 90-A Beal Pkwy NW, Fort Walton Beach FL 32548 USA; Tel +44 850 863 5723.

SEE ALSO

       amp(1), ptsctl(1), WTSSR-M(1)

CREDITS

        Charles Maier