15
only);
5ms CREST-MAX Capture
mode (Peak Hold); Auto-ranging Relative-Zero mode;
Display Hold; EF-Detection (NCV); Optional Interface capabilities with PC computers
Electrical Specifications
Accuracy is
(% reading number of digits) or otherwise specified, at 23
C
5
C &
less than 75% relative humidity.
True RMS model 197 voltage accuracies are specified from 5 % to 100 % of range or
otherwise specified. Maximum Crest Factor < 1.4 : 1 at full scale & < 2.8 : 1 at half scale,
and with frequency components within the specified frequency bandwidth for non-sinusoidal
waveforms.
DC Voltage
RANGE
Accuracy
6.000V, 60.00V,
600.0V & 1000V
0.5%+5d
Input Impedance: 10M
, 50 pF nominal
AutoCheck
TM
_ DCV
RANGE
Accuracy
6.000V, 60.00V,
600.0V & 1000V
1.3% + 5d
AutoCheck
TM
Lo-Z DCV Threshold:
> +1.5VDC & < -1.5VDC nominal
AutoCheck
TM
Lo-Z DCV Input Impedance:
Initially approx. 2.5k
, 600pF nominal;
Impedance increases abruptly within a
fraction of a second as display voltage is
above 50V (typical). Ended up impedances
vs display voltages typically are:
10k
@100V
60k
@300V
200k
@600V
420k
@1000V
AC Voltage
RANGE
Accuracy
50Hz ~ 400Hz
6.000V, 60.00V,
600.0V & 1000V
1.2% + 5d
Input Impedance: 10M
, 50 pF nominal
AC+DC Voltage (Model 197 Only)
RANGE
Accuracy
DC, 50Hz ~ 400Hz
6.000V, 60.00V,
600.0V & 1000V
1.4% + 7d
Input Impedance: 10M
, 50 pF nominal
AutoCheck_ACV
RANGE
Accuracy
1)
50Hz ~ 60Hz
6.000V, 60.00V,
600.0V & 1000V
1.5%+5d
AutoCheck
TM
Lo-Z ACV Threshold:
> 1.5V(50/60Hz) nominal
AutoCheck
TM
Lo-Z ACV Input Impedance:
Initially approx. 2.5k
, 600pF nominal;
Impedance increases abruptly within a
fraction of a second as display voltage is
above 50V (typical). Ended up impedances
vs display voltages typically are:
10k
@100V
60k
@300V
200k
@600V
420k
@1000V
