BENNING MM 12
 | |
| Status | in progress |
|---|---|
| Source code | serial-dmm |
| Counts | 40000 |
| IEC 61010-1 | CAT III (1000V) / CAT IV (600V) |
| Connectivity | Infrared (USB), Bluetooth LE |
| Measurements | voltage, current, frequency, duty cycle, resistance, continuity, conductance, diode, capacitance, temperature |
| Features | autorange, data hold, min/max/avg, crest, backlight, true-rms, dBm, dB, peak hold |
| Website | benning.de |
The BENNING MM 12 is a 40000 counts, CAT IV (600V) / CAT III (1000V) dual display handheld digital multimeter with USB and Bluetooth LE connectivity.
It is based on the APPA 506B, See also: APPA B (150/208/506) based Multimeters
A driver for the APPA 150/208/506-based devices ("appa-b" in sigrok) has been created and will be submitted to sigrok once ready for acception (more details in pull request #99).
Photos
MM 12 connected to SmuView visualizing readings from the power grid
Front view
Measuring voltage and frequency from the power grid
Display, automatic backlight on
Protective sleeve removed
Rear
Optical data port (USB/Serial)
Included data cable (USB)
Batteries and fuses
Examples: Establish data connection between sigrok and MM 12
Important: Driver is not (yet) part of mainline sigrok - see this repository in github if you want to use it already.
Serial/USB
Assuming the meter is turned on, plugged in and the usb-serial driver at /dev/ttyUSB0 loadad and up (should happen automatically).
Scan for MM 12 with USB/Serial connection:
$ sigrok-cli -d benning-mm12:conn=/dev/ttyUSB0 --scan
Show readings from connected meter:
$ sigrok-cli -d benning-mm12:conn=/dev/ttyUSB0 --continuous
Open in SmuView:
$ smuview --driver benning-mm12:conn=/dev/ttyUSB0
Bluetooth LE
Assuming the meter is turned on and bluetooth activated on the meter and the PC. Important: Your Bluetooth-Controller must support BLE.
Scan for BLE devices:
# hcitool lescan 18:7A:93:BF:47:62 BENNING MM12
18:7A:93:BF:47:62 is an example for the device address. For sigrok the ":" must be replaced by "-" for now. That device address is used for the following examples, just replace it by the address of your own meter.
The full connection string then would look like this: bt/appa-b/18-7A-93-BF-47-62
Scan for MM 12 with BLE connection:
$ sigrok-cli -d benning-mm12:conn=bt/appa-b/18-7A-93-BF-47-62 --scan
Show readings from connected meter:
$ sigrok-cli -d benning-mm12:conn=bt/appa-b/18-7A-93-BF-47-62 --continuous
Open in SmuView:
$ smuview --driver benning-mm12:conn=bt/appa-b/18-7A-93-BF-47-62
Protocol
The protocol on Serial and BLE is the same for all of the APPA 150 / 208 / 506 based models.