Series 3700 System Switch/Multimeter User's Manual
Section 5: Basic Digital Multimeter (DMM) Operation
3700S-900-01 Rev. C / July 2008
5-23
-- buf.timestamp includes date and real time.
-- Note that x,x prints reading and time vertically for
easy copy / paste to Excel
endscript
This table illustrates how to optimize ACV or ACI for input signal frequency,
reading rate, autodelay, and measure count.
Setting
Detector
bandwidth
Freq
band
Aperture
time
Fixed no.
samples
per
reading
Auto
zero
Autodelay (ms)
Measure
count
Total measure-
count time (s)
Average
Reading(s)
SLOW
3
3Hz-
300KHz
1ms, fixed
2000
N/a
200
Off
10
21.41167
0.467
Once
21.61796
0.463
On
23.41259
0.427
MED
30
30Hz-
300KHz
1ms, fixed
200
N/a
200
Off
20
6.00595
3.33
Once
6.22548
3.213
On
10.0174
1.997
FAST
300
300Hz-
300KHz
8.33us
(10us)
min
1
Off
50
Off
100
0.00765
13,070
Once
0.15072
663.5
On
5.08854
19.65
FAST
300◄
300Hz-
300KHz
16.67ms
(20ms)
1
On◄
50
Off
100
2.35427
42.48
Once◄
2.50335
39.95
On
7.08160
14.12
Default setting ◄, (50 Hz power line frequency)
Low level considerations
For sensitive measurements, external considerations beyond the Series 3700
affect the accuracy. Effects not noticeable when working with higher voltages
are significant in microvolt signals. The Series 3700 reads only the signal
received at its input; therefore, it is important that this signal be properly
transmitted from the source. The following paragraphs indicate factors that affect
accuracy, including stray signal pick-up and thermal offsets.