14
Use:
Zero level of the red scale in dB corresponds to U
0
= 0.775 V for the 10 V
range. The reading is direct in dB for the 10 V
range from 0 to +22 dB.
For the other ranges, it is possible to read in dB (near value) by adding respectively:
+10 dB on the 30 V
range
+20 dB on the 100 V
range
+30 dB on the 300 V
range
+40 dB on the 1000 V
range
DC AND AC CURRENTS
Always switch off the circuit. If the «Fus» light comes on, change the faulty
fuse(s) (Reminder: minimum voltage of 110 V).
Connect the leads to the multimeter and connect in series to the circuit with:
- the red lead in the «µmA» terminal, up to 1.5 mA
- the red lead in the «15 A» terminal, from 1.5 A to 15 A
Switch off the power supply to the circuit before changing range.
To get the current in µA, mA or A, multiply the value read on the appropriate scale
by the reading coefficient shown in the table.
A
50 µA
(1)
150 µA
1.5 mA
15 mA
150 mA
1.5 A
15 A
Scale
100
15 black
Reading
coefficient
x0.5
x10
x0.1
x1
x10
x0.1
x1
Voltage drop at
the terminals
(2)
< 0.1 V
< 0.25 V
< 0.3 V
< 0.8 V
Accuracy
(3)
2.5 %
5 %
Protection
Fuse 1.6 A HPC
Fuse 16 A HPC
Limitation 10 min. ON, 5 min. OFF up to +40°C max.
(1) Common to the 100 mV
range.
(2) Without the leads. Resistance of the pair of leads supplied: approx. 70 mΩ.
(3) In % of the end of scale.
Do not use the A
input on unprotected current transformers.
A
(1)
1.5 mA
15 mA
150 mA
1.5 A
15 A
Scale
15 red
Reading coefficient
x0.1
x1
x10
x0.1
x1
Voltage drop at the
terminals
(2)
< 0.8 V
< 0.9 V
< 0.8 V
Accuracy
(3)
5 %
3 %
Protection
Fuse 1.6 A HPC
Fuse 16 A HPC
Limitation 10 min. ON, 5 min. OFF up to +40°C max.
(1) Bandwidth: 40 Hz to 5 kHz. See § 4.
(2) Without the leads. Resistance of the pair of leads supplied: approx. 70 mΩ.
(3) In % of the end of scale.
Presence of direct component give false measurement.
