Speed - Keysight 4284A Technical Overview

Low impedance measurement
DUT: 1 mohm resistor, freq: 100 kHz, 10 Vrms
1.0E-05
5.0E-06
0.0E+00
-5.0E-06
-1.0E-05
0
Measurement time per point
E4980A (SHORT, Avg=11) 28.6 ms
4284A (SHORT, Avg=1)
Figure 4. Data fluctuation comparisons of the E4980A and the 4284A using SHORT with the same measurement time
1
Figure 5. Measurement time comparison of the
standard E4980A and 4284A LCR meters
Measured data fluctuation
10 20 30 40 50 60 70
Times
Standard deviation
30 ms
tion has been greatly improved. The data fluctuation in this example is similar
to the 4284A's data fluctuation in "MED" mode.

Speed:

Faster measurement speeds
The E4980A offers more than 5 times faster in SHORT mode, and approximately
two times faster measurement speed in MED mode than the 4284A; this is the
best speed in its class. Maximum speed and repeatability can be achieved
using the three measurement modes (SHORT/MED/LONG) with the average
function. See Figure 5.
The E4980A precision LCR meter's fast measurement speed, combined with
high accuracy and measurement repeatability, provides accurate and
high-throughput test capability for both low and high impedance measure-
ments.
Option E4980A-005: For users that do not require the ultimate measurement
speed in a short length of time, an economical, entry model option is available.
1. Measurement time at 1 MHz. For additional details, refer to the E4980A data sheet
(literature number 5989-4435EN).
High impedance measurement
DUT: 1pF capacitor, freq: 1 MHz, 20 mVrms
E4980A SHORT (Avg11)
4284A SHORT
0.0E+00
-1.0E-15
-2.0E-15
-3.0E-15
80 90 100
0.94 ohm
8.82 ohm
Measured data fluctuation
3.0E-15
2.0E-15
1.0E-15
0 10 20 30 40 50
Times
Measurement time per point
E4980A (SHORT, Avg=11) 27.6 ms
4284A (SHORT, Avg=1) 30 ms
4284A SHORT
E4980A SHORT (Avg11)
60 70 80 90 100
Standard deviation
0.23 fF
1.39 fF