Keysight Technologies 3458A Guide D'utilisation page 84

3 Configuring for Measurements
Table 3-3
Function parameter
DCV
DSAC
DSDC
FREQ
OHM
OHMF
PER
SSAC
SSDC
[a] Refer to
Autorange
When the autorange function is enabled, the multimeter samples the input prior
to each reading (when readings are being triggered) and automatically selects the
correct range. Since autorange requires sampling the input, measurements made
with autorange enabled take longer than measurements made on a fixed range. In
the power-on/PRESET NORM state, autorange is enabled. If you intend to
measure a fairly stable input signal, you can use the ARANGE ONCE command to
allow autorange to select the correct range (when readings are triggered) and
then disable autorange for subsequent readings. This allows you to get the
automatic range selection advantage of autorange and also the speed advantage
of readings made with autorange disabled. To do this, send:
OUTPUT 722;"ARANGE ONCE"
Now when triggering begins, the multimeter will select the correct range and then
disable autorange. Later, if you need to enable autorange, send:
OUTPUT 722; "ARANGE ON"
84
Measurement function parameters (continued)
[a]
[a]
[a]
[a]
Chapter 5, "Digitizing" for more information on these functions.
Description
Selects DC voltage measurements
Direct sampling, AC coupled
Direct sampling, DC coupled
Selects frequency measurements
Selects 2-wire ohms measurements
Selects 4-wire ohms measurements
Selects period measurements
Sub-sampling, AC coupled
Sub-sampling, DC coupled
Keysight 3458A User's Guide