Metex M-3850M
| File:Metex m3850m mugshot.png | |
| Status | supported |
|---|---|
| Source code | serial-dmm |
| Counts | 4000 |
| IEC 61010-1 | — |
| Connectivity | RS232 |
| Measurements | voltage, current, hFE, logic, capacitance, frequency, resistance, continuity, diode |
| Features | hold, relative, min/max, bargraph |
The Metex M-3850M is a 4000 counts true rns, handheld digital multimeter with RS232 connectivity.
Hardware
RS232 cable:
Photos
Multimeter: Note that this Multimeter was repaired, since there were some parts broken or missing: The On/Off-Switch cap, the stand and the battery cover have been 3d-printed, so they are not original. The battery clip was replaced due to corrosion.
Device, front
Device, back
Device, side
Device, lower pcb, back
Device, lower pcb, front
Device, lower pcb, front with mode switch
Device, opened
Device, upper pcb, back
Device, upper pcb, front
Cable:
See Device_cables#Metex_5-pin_RS232_cable.
Protocol
See Multimeter ICs#Alternative_Protocol. This device works with the Metex M-3860M driver. It appears as a 4 channel device, the first one corresponding to the main display, the other three channels to the small multi-purpose displays beneath.