Chauvin Arnoux C.A 755, User Manual

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3. CHARACTERISTICS
3.1. REFERENCE CONDITIONS
Quantity of influence Reference values
Temperature 23 ± 5 °C
Relative humidity 30 to 75% RH
Supply voltage 3 ± 0.1V
Frequency of the measured signal DC or 45 to 65Hz
Type of signal sinusoidal
External electric field < 1V/m
DC external magnetic field < 40A/m
3.2. ELECTRICAL CHARACTERISTICS
3.3.1. VOLTAGE
Particular reference conditions:
„
AC signal ≤ 1% in DC measurements.
„
DC signal ≤ 1% in AC measurements.
Range 3 V 30 V 300 V 1000 V
Measurement
range
3 mV
dc
to
2,999 V
dc
3.00 V to
29.99 V
30.0 V
to299.9 V
300 V to
1000 V 100 mV
ac
to
2,999 V
ac
Resolution 1 mV 10 mV 100 mV 1 V
Intrinsic
uncertainty
in V
dc
2% ± 3 pt
Intrinsic
uncertainty
in V
ac
3% ± 4 pt
Input
resistance
10 M Ω
Automatic AC/DC detection is possible only above 450 ±
150mV.
3.3.2. RESISTANCE AND CONTINUITY
Particular reference conditions:
„
Zero voltage.
„
Pure resistance (no diode or capacitance in parallel).
Range 300 Ω 3 k Ω 30 k Ω 300 k Ω 3 M Ω 30 M Ω
Measure-
ment range
0.3 to
299.9
Ω
300 to
2999 Ω
3.00 to
29.99
k Ω
30.0 to
299.9
k Ω
300 to
2999
k Ω
3.000
to
30.00
M Ω
Resolution 0,1 Ω 1 Ω 10 Ω 100 Ω 1 k Ω 10 k Ω
Intrinsic
uncertainty
3% ±
5 pt
3% ± 3 pt
5% ±
3 pt
The 30 M Ω range is not available in automatic mode.
In continuity, in the 300 Ω , range, the instrument emits an
audible signal below 30 Ω .