True RMS Multimeters
Specifications
13
Accuracy ± ( [ % of Reading ] + [ Counts ] )
Function Range Resolution Model 110 Model 111 Model 112
DC Amps
(Models 111 and 112)
6.000 A
10.00 A continuous or
20 A overload for 30
seconds maximum
0.001 A
0.01 A
NA 1.0 % + 3 1.0 % + 3
Hz
6
(V or A input ) 99.99 Hz
999.9 Hz
9.999 kHz
50.00 kHz
0.01 Hz
0.1 Hz
0.001 kHz
0.01 kHz
0.1 % + 2 0.1 % + 2 0.1 % + 2
MIN MAX AVG Accuracy
and Response Time
Accuracy is the specified accuracy of the measurement function ± 12 digits for changes >275 ms in duration
(± 40 digits in AC). Typical response time: 100 ms to 80 % of signal, except V AC and A AC.
1. AC voltage ranges are specified from 5% of range to 100% of range.
2. Crest factor of
≤
3 at full scale up to 300 V, decreasing linearly to crest factor
≤
1.5 at 600 V.
3. The 6000 mV range can only be entered in Manual Range mode.
4. For film capacitors.
5. Crest factor of
≤
3. AC current is not specified below 3A.
6. Hz is specified from 5 Hz to 50 kHz in volts, from 50 Hz to 5 kHz in amps.
Function Input Impedance (Nominal) Common Mode Rejection Ratio Normal Mode Rejection
Volts AC > 5 MΩ < 100 pF > 60 dB at DC, 50 Hz or 60 Hz
Volts DC > 10 MΩ < 100 pF > 100 dB at DC, 50 Hz or 60 Hz > 50 dB at 50 Hz or 60 Hz
Full Scale Voltage
Open Circuit Test Voltage To 6 MΩ 40 MΩ Short Circuit Current
Ohms
< 1.5 V DC < 600 mV DC < 1.5V DC < 500 µA
Diode test
2.4 to 3.0 V DC 2.400 V DC 1.2 mA typical
