Meterman 38XR

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Meterman 38XR
Meterman-38xr.png
Status supported
Source code serial-dmm
Counts 10000
IEC 61010-1 CAT III (1000V) / CAT IV (600V)
Connectivity RS232
Measurements voltage, current, resistance, continuity, diode, capacitance, temperature, frequency, duty cycle
Features autorange, data hold, min/max, backlight
Website tequipment.net

The Meterman 38XR is a 10000 counts, CAT III 1000V, CAT IV 600V, handheld digital multimeter.

Press the RS232 button to enable the meter's transmission of measurements to the host.

Hardware

TODO.

Photos

Usage

Press the RS232 button so that RS232 lights up on the LCD.

 $ sigrok-cli -d meterman-38xr:conn=/dev/ttyUSB0 --continuous
 $ smuview  --driver meterman-38xr:conn=/dev/ttyUSB0 

Protocol

The transmission of the measurement data is disabled by default. Pressing the RS232 button lights up the RS232 symbol on the display and starts transmitting data. Data is sent in 15 byte chunks consisting of 13 hex nibbles encoded in ascii, followed by <CR><LF>

Header 1 Header 2
Bytes 0-1 Function code ie. Voltage DC, Resistance, etc.
Bytes 2-5 BCD (Binary coded decimal) encoding of digits shown on the LCD
Bytes 6-7 Bargraph segment value
Byte 8 Range code, used to convert digits to actual value
Byte 9 Current mode ie AC, DC or AC+DC
Byte 10 Peak status ie. Min/Max/Avg
Byte 11 Range settings ie. Auto, Manual
Byte 12 Polarity of meter reading

More information can be found in the Protocol description document

Resources