Boltek EFM-100C Atmospheric Electric Field Monitor

Data output by the EFM-100C instrument are:

  • Polarity of the electric field (+/-)

  • Electric field level (kV/m)

Data is output as it is read and calculated by the instrument at a fixed period of approximately 50 ms.

Example Output Line

Examples:

$+00.65,0*CE\r\n
$+00.65,0*CE\r\n
$+00.64,0*CD\r\n

Data Format

Data is formatted as a fixed-length line, as follows:

$+level,f*CE\r\n

where:

  • $ indicates indicate the start of the telemetry.

  • s: polarity sign: either “+” or “-“.

  • level: electric field level (kV/m). Zero padded decimal value between 00.00 and 20.00.

  • f: fault indicater: either 0 (no fault) or 1 (fault).

  • cc: checksum signature; a two character hexadecimal value.

Serial Interface

  • RS-232 protocol

  • 19200 baud

  • 8 data bits

  • 1 stop bit

  • no parity

  • no flow control

  • ISO8859-1 format

Manual