60
Measurements of potential of the voltage probe
The characteristics are the same as in the voltage measurements.
This voltage must normally be between 0 and U
L
.
6.2.2. FREQUENCY MEASUREMENTS
Particular reference conditions:
Voltage
≥
2 V
or current
≥
30
mA for the MN77 clamp,
≥
10
mA for the C177 clamp,
≥
50 mA for the C177A clamp.
Beyond these values, the frequency is indeterminate (display of - - - - ).
Measurement range
15.8 - 399.9 Hz
400.0 - 499.9 Hz
Voltage range
10 … 550 V
Resolution
0.1 Hz
1 Hz
Intrinsic uncertainty
± (0.1 % + 1 ct)
6.2.3. CONTINUITY MEASUREMENTS
Particular reference conditions:
Resistance of the leads: zero or compensated.
Inductance of the leads: zero.
External voltage on the terminals: zero.
Inductance in series with the resistance: zero.
Compensation of the leads up to 5
W
.
The maximum acceptable superposed external AC voltage is 0.5 VRMS in sine wave.
200 mA current
Measurement range
0.00 - 39.99
W
Resolution
0.01
W
Measurement current
≥
200 mA
Intrinsic uncertainty
± (1.5% + 2 ct)
Operating uncertainty
± (8.5% + 2 ct)
No-load voltage
9.5 V ± 10%
Maximum inductance in series
40 mH
12 mA current
Measurement range
0.00 - 39.99
W
40.0 - 399.9
W
Resolution
0.01
W
0.1
W
Measurement current
approximately 13 mA and < 15 mA
Intrinsic uncertainty
± (1.5% + 5 ct)
Operating uncertainty
± (8.5% + 5 ct)
No-load voltage
9.5 V ± 10%
Maximum inductance in series
40 mH
