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

open-plc-utils-0.0.3                              November 2013                                        weeder(1)