Operation/Programming
Page 49 of 110
The 1910 has three basic accuracies:
Basic Accuracy For AC:
High 0.10%
Medium 0.25%
Low & Low No Display 0.5%
The actual accuracy at a given test condition is defined by the following formula:
Z
1
Z
Z
1
200k
Freq
Freq
50
1
V
1
Acc
Accuracy
Max
2
3
Basic
V = Programmed test voltage
(V
SOURCE
)
Freq = Programmed test frequency
Note:
For frequencies above 100kHz V
DUT
must be at
|Z| = DUT impedance
least 20mV. That is
SOURCE
DUT
DUT
SOURCE
DUT
R
Z
Z
V
V
Z
Max
is 4*10
5
for Frequency less than 10kHz
2.5*10
4
for Frequency less than 250kHz
1.5*10
3
for Frequency above 250kHz
DF
ACCURACY
=
Accuracy %
DF
+
1
+
100
50
Freq
50000
Q
ACCURACY
=
Accuracy %
100
+
+
+
Q
0.02
Accuracy %
100
Q
2
Accuracy %
200
Basic Accuracy For DC:
High 0.20%
Medium 0.25%
Low & Low No Display 0.5%
Max
2
3
Basic
R
R
R
0.3
1
V
1
Acc
Accuracy
R = DC Resistance
R
Max
= 400k
Due to the large time constants involved in measurements of high value inductors, additional
inaccuracies may result. This will be indicated by reduced display resolution.
For Capacitors If DF > .1
For Inductors if Q < 10
2
DF
1
Accuracy
Accuracy
2
Q
1
1
Accuracy
Accuracy
Temperature: Error doubles for every 10
C from 23
C
Summary of Contents for 1910
Page 8: ...Page 4 of 110...
Page 10: ...Page 6 of 110...
Page 34: ......
Page 100: ......
Page 107: ...Theory Page 103 of 110 Figure 4 4 Detector Circuits Es IL Ex PL PH Voltage Current...
Page 108: ...Page 104 of 110 Theory Figure 4 5 Digital Signal Processor Es Ex CPU DSP A D Vin A Vin B...
