User manual

Section 5: Range, Digits, Rate, Bandwidth, and Filter Series 3700 System Switch/Multimeter Reference Manual
5-4 3700S-901-01 Rev. C / July 2008
Selecting an auto range
Auto range is enabled by setting the dmm.autorange attribute (see
dmm.autorange (on page 13-113)) to either dmm.ON or 1. When auto range is
enabled, the range is changed automatically for the selected range value. When
auto range is disabled, the instrument remains at the selected range. To disable
auto range, either set the dmm.autorange attribute to dmm.OFF or 0, or send
a valid dmm.range attribute (see dmm.range (on page 13-156)).
Digits ICL programming
Set the dmm.displaydigits (on page 13-132) attribute to change the display
resolution for the Series 3700 from 3½ to 7½ digits. Each mainframe input
function can have its own unique digits setting. Digits has no effect on the
remote reading format. The number of displayed digits does not affect accuracy
or speed.
Scanning
When a scan is configured, each channel can have its own unique digits setting.
Setting digits
Even though the parameters for the dmm.displaydigits attribute (see
dmm.displaydigits (on page 13-132) for remote control or DIGITS under the
function attribute menu on front panel) are expressed as integers (3 to 7), you
can specify resolution using a real number. For example, to select 3½ digit
resolution, let <n> = 3.5. Internally, the instrument rounds the entered parameter
value to the nearest integer. Each mainframe input function can have its own
unique digits setting.