1. PRESENTATION
The MX 407 is a self-contained portable digital megohmmeter,
specially designed to group, in a single device, the various functions
serving to measure the following electrical quantities:
Insulation test at 250V, 500V, and 1000V, up to 4G
AC or DC voltmeter with high input impedance;
Ohmmeter;
Continuity test with buzzer;
Figure 1: the MX 407 megohmmeter
Item Designation
1
Display unit
2
Function keys
3
Switch
4
Terminals
4
1
2
3
See §
1.1
1.2
1.3
1.4
21