13
Special Features :
30ms Max Hold (except Model 110M); Data Hold; Relative Zero
mode (Models 110M, 111M & 112M only); Simultaneous A+V, A+
Ω
, A+
o
C (Models
127M & 128M only); Slim jaws; Light Weight
ELECTRICAL SPECIFICATION
Accuracy is ±(% reading number of digits) or otherwise specified, at 23
o
C ±5
o
C
& less than 75% R.H.
Models 112M & 128M True RMS accuracy of ACV is specified from 5 % to 100 % of
range, and ACA is specified from 10 % to 100 % of range, or otherwise specified.
Maximum Crest Factor < 1.75 : 1 at full scale & < 3.5 : 1 at half scale, and with
frequency spectrums, besides fundamentals, fall within the meter specified AC
bandwidth for non-sinusoidal waveforms
DC Voltage
RANGE
Accuracy
400.0 mV
0.3% + 4d
4.000V, 40.00V,
400.0V
0.5% + 3d
600V
1.0% + 4d
NMRR :
>50dB @ 50/60Hz
CMRR :
>120dB @ DC, 50/60Hz,
Rs=1k
Ω
Input Impedance : 10M
Ω
, 30pF nominal
(1000M
Ω
for 400.0mV range)
AC Voltage
RANGE
Accuracy
50Hz ~ 500Hz
4.000V, 40.00V,
400.0V
1.5% + 5d
600V
2.0% + 5d
CMRR :
>60dB @ DC to 60Hz,
Rs=1k
Ω
Input Impedance : 10M
Ω
, 30pF
nominal
ACA Current (Clamp-on)
RANGE
Accuracy
1) 2) 3)
50Hz / 60Hz
40.00A*
1.5% +8d
400.0A
1.5% +8d
600A
1.5% + 8d
*Not available to Model 110M
1)
Induced error from adjacent current-
carrying conductor: 0.05/A
2)
Specified accuracy is from 1% to 100%
of range and for measurements made at
the jaw center. When the conductor is not
positioned at the jaw center, position
errors introduced are:
Add 2% to specified accuracy for
measurements made BEYOND jaw
marking lines (toward jaw opening)
3)
Add 8d to specified accuracy @ reading
< 10% of range
Max Hold
*
(where applicable)
Specified accuracy ± 50 digits for
changes > 25ms in duration
*Not available to Model 110M
