AC Voltage
(True RMS)
Range
Resolution
Input
impedance
Accuracy
HFR1
selected
45 to 60Hz
HFR2 selected
45Hz
to
500Hz
500Hz
to
1kHz
1kHz
to
2kHz
600mV
0.01mV
10M
:
2.0% + 20
1.0% +
20
1.5% +
20
N/A
6V
0.0001V
11M
:
60V
0.001V
10M
:
2.0%
+ 20
600V
0.01V
750V
0.1V
2.0% + 20
N/A
AC coupled true rms AC voltage accuracy is specified from 2% to 100% of range.
Crest factor: 3 at full scale, 6 at half scale
High frequency reject filter -3dB points: HFR1 at 1kHz, HFR2 at 100kHz
Peak hold accuracy (45Hz to 500Hz): 60V to 750V AC ± (3.0% rdg + 500 dgts)
Peak hold response time: 1ms
Overload protection: 1000V DC or 750V AC rms
AC + DC Voltage
(True RMS)
Range
Resolution
Input
impedance
Accuracy
45Hz
to
500Hz
500 Hz
to
1 kHz
1 kHz
to
2 kHz
600mV
0.01mV
10M
:
1.5% + 30 2.0% + 30
N/A
6V
0.0001V
11M
:
60V
0.001V
10M
:
2.5% + 30
600V
0.01V
750V
0.1V
2.5% + 30
N/A
Specification
MM94 TRMS Digital Multimeter
AC coupled true rms AC voltage accuracy is specified from 2% to 100% of
range.
Crest factor: 3 at full scale, 6 at half scale
Overload protection: 1000V DC or 750V AC rms
Current
Range
Resolution
Voltage
burden
Accuracy
DC
AC
(true rms)
AC+DC
(true rms)
45 Hz to 1 kHz
600μA
0.01μA
500mV
0.5% + 10
1.5% + 20 2.0% + 30
6000μA
0.1μA
2V
60mA
0.001mA
500mV
400mA
0.1mA
2V
1.0% + 10
20A
Note 1
1mA
2.0% +10
2.5% + 20 3.0% + 30
AC coupled true rms AC current accuracy is specified from 2% to 100% of range.
Crest factor: 3 at full scale, 6 at half scale
Peak hold accuracy on AC current ranges (45Hz to 500 Hz):
± (3.5% rdg + 500 dts)
Peak hold response time: 1ms
Input protection: 0.5 A/1000 V fast blow ceramic fuse on 600μA to 400mA ranges
20A/600V fast blow ceramic fuse on 20 A range
Note 1: Apply currents >10 A for 30 seconds maximum, then allow a 10 minute
cooling period.
Specification
MM94 TRMS Digital Multimeter
Resistance
Range
Resolution
Open circuit
voltage
Accuracy
600
:
0.01
:
-3.0V dc
0.3
%
+ 20
6k
:
0.0001k
:
-1.2V dc
60k
:
0.001k
:
600k
:
0.01k
:
6M
:
0.0001M
:
1.0% + 10
60M
:
0.001M
:
3.0
%
+ 20
Overload protection: 600V DC or AC rms
Conductance
(6000 counts only)
Range
Resolution
Open circuit
voltage
Accuracy
60nS
0.01nS
-0.7V dc
1.0
%
+ 10
Overload protection: 600V DC or AC rms
Capacitance
(6000 counts only)
Range
Resolution
Accuracy
6nF
0.001nF
3.0% + 30
60nF
0.01nF
3.0% + 10
600nF
0.1nF
6μF
0.001μF
60μF
0.01μF
600μF
0.1μF
6mF
0.001mF
5.0% + 10
Overload Protection: 600V DC or AC rms
Specification
MM94 TRMS Digital Multimeter
Specification
MM94 TRMS Digital Multimeter
Frequency
Range
Resolution
Trigger
level
Accuracy
60Hz
0.001Hz
>1.5V
0.1% + 10
600Hz
0.01Hz
6kHz
0.0001kHz
60kHz
0.001kHz
600kHz
0.01kHz
6MHz
0.0001MHz
>2.5V, <5V
10MHz
0.001MHz
Minimum input: >6Hz
Minimum pulse width: >100 ns
Duty cycle limits: >30% and <70%
Overload protection: 600V DC or AC rms.
Duty Cycle
Range
Resolution
Resolution
Pulse
width
Accuracy
(5V logic)
5% to 95%
40Hz to 1kHz
0.1%
>10
μ
s
2.0% + 10
10% to 90%
1kHz to 10kHz
20% to 80%
10kHz to 20kHz
Overload protection: 600V DC or AC rms
