This is a simple library to read and format data from the serial interface on a Circuit-Test DMR-5200 digital multimeter. The connection settings and data format for the meter are described in Section 8 of the DMR-5200 manual.
The included dmr5200 script illustrates how to use the library, and can be
used as a simple tool to generate CSV formatted readings from a connected
multimeter.
The library assumes that the multimeter has already been put into RS-232 mode using the procedure described in Section 8 of the manual.
To install the library, first install pyserial and setuptools, and then run
python setup.py install
dmr5200 <serial_port> <request_interval>
Where serial_port is the serial device that the multimeter is connected to,
and request_interval is the floating point polling interval in seconds. The
meter generally takes a second or two to process and respond to each request, so
setting an interval below about 2 seconds will have little effect.
The command
dmr5200 /dev/ttyUSB0 5
will take a reading every 7 seconds or so (allowing for the meter processing
time) from the meter connected to /dev/ttyUSB0 and write it as a comma
separated record to stdout.
The CSV format is as follows:
function,value,units,timestamp
and the first line printed has the comma separated column headings.