Chapter II
Benchtop multimeter
39
5.4.2.1. Multimeter configuration
Any command sent to the multimeter must be compatible with:
- the position of the switch at the time that the command is sent.
For example, programming RMS mode will only be possible if the switch is on V
AC
or in
“current” position. It is meaningless if the switch is on the
Ω
position.
Message:
“2XXY” + CR (0DH)
Answer:
ACK (06H)
X
X
Y
Measurement type
3BH
continuity
3CH
3DH
diode
3EH
ohm
3FH
capacity
31H
30H
DC
32H
DC Pk+
33H
DC Pk-
34H
RMS
36H
RMS AC+DC
38H
dB
3AH
resistive power
3BH
RMS adjustment
32H
39H
frequency
3AH
chron
3BH
chronometer -
3CH
duty cycle +
3DH
cuty cycle -
3EH
c
3FH
counter -
33H
31H
survey mode (toggle)
32H
LRHD mode (toggle)
33H
REL mode (toggle)
35H
MEM mode (toggle)
36H
ZOOM mode (toggle)
37H
3AH
*
Relative reference programmation
3BH
**
Ohm reference programmation (dB and resistive power)
3CH
***
Timer programmation (max : 9h59'59")
3DH
changing Pt 100 / Pt 1000 probe sensitivity (toggle)
34H
32H
manual mode
33H
Auto range mode
34H
Range incrementation
35H
changing rejection 50/60Hz (toggle)
36h
changing impedance in mV 10M
Ω
/ >1000M
Ω
(toggle)
37H
changing resolution high/low (toggle)
38H
changing mode with/without correction (toggle)
3AH
****
choose the range in the active measure