3b-scientific Analog Multimeter AM51 User Manual download pdf

U17451 Analog Multimeter

1 Rotary switch to select

measurement range

2 Rotary knob to set full-scale

deflection for 0 Ω

3 Connection for voltage

measurement

4 Connection for current and

resistance measurement

5 Connection for ground

6 Adjustment screw for

mechanical zero-point

setting

7 Nub to latch the housing

shut

Instruction sheet

10/04 MC/ALF

Handheld meter used to measure

current, voltage and resistance as

well as gain levels or attenuation e.g.

in chains of quadripoles.

1. Safety instructions

• Before using the analog multime-

ter, make sure you read the oper-

ating instructions carefully and

that you comply with them com-

pletely.

• The safety of the multimeter and

the person operating it can only

be guaranteed if it is used in ac-

cordance with the instructions. Do

not operate or handle this unit

incorrectly or inappropriately.

• The device may only be used by

persons, who are aware of the haz-

ards of contact (for voltages over

30 V rms) and can undertake the

appropriate safety precautions.

This also includes the appearance

of unforeseen voltages e.g. in de-

fective units or charged capacitors.

• In the case of voltage and current

measurements the nominal volt-

age between the phase and neu-

tral conductor may not exceed 300

V according to CAT II (in circuits

that are directly connected to the

mains) and CAT III (in building wir-

ing installations) 300 V.

• The analog multimeter may not be

used for measurements in circuits

with corona discharge (high volt-

age).

• In measurements involving RF cir-

cuits special care must be taken

due to the existence of dangerous

hybrid voltages.

• The appropriate permissible mea-

surement range may not be ex-

ceeded. Always change from a

1 2 3 4 5

Summary of Contents

Page 1 - U17451 Analog Multimeter

6U17451 Analog Multimeter1 Rotary switch to selectmeasurement range2 Rotary knob to set full-scaledeflection for 0 Ω3 Connection for voltagemeasuremen

Page 2

7higher measurement range to alower measurement range.• Before using the device, check thehousing and the measurementcables for any damage.• Do not co

Page 3 - 3. Operation

8Ambient temperature: + 23° CFrequency:50...60 HzWaveform: SinusoidalElectrical safety:Safety stipulations: EN 61010-1Overvoltage category:CAT III max

Page 4

9• Connect the multimeter and takea reading from the V, A DC scale.3.3.3 AC voltage up to 600 VVAΩ~COM• Using the rotary switch (1) selectthe correspo

Page 5 - 4 Maintenance

103.6 Attenuation and gainmeasurementVAΩ~COM• In communications engineeringthe gain or attenuation of a signalis specified in decibels as the log-arit