TDS640__SetChannelPosition (ul_pbar_instruments)

 *  Synopsis:
 *    #include <ul_pbar_instruments:tds640.h>
 *
 *    int TDS640__SetChannelPosition( const CTDS640ptr tds640Ptr,
 *				      const ECHANnumber channel,
 *				      const float POSition )
 *
 *  Function intent:
 *    TDS640__SetChannelPosition() sets the channel display position
 *    for the requested channel.
 *  Function parameters:
 *    CTDS640ptr	tds640Ptr	Valid TDS 640 module pointer
 *    ECHANnumber	channel		TDS 640 channel to be read:
 *					  kChan1 <= channel <= kChan4
 *    float		POSition	Channel display position:
 *					  0.001 <= SCAle <= 10.0
 *  Function return value:
 *    CBS_OK		Setup was successful
 *    CLIB_INVID	Invalid channel request
 *    CLIB_INVARG	Invalid parameter value
 *    CLIB_GENERR	Unable to write TDS 640 command(s) 
 *    CLIB_INVALID_DATA	TDS 640 status error after GPIB command