<
resolution
>
numeric
resolution
(see Table 5-1) |
DEF | MIN | MAX
volts
<
channel_list
>
numeric
Refer to the multiplexer user’s manual for
a list of channels available.
none
Comments
•
To select a standard measurement range, specify range as the input signal’s
maximum expected voltage. The multimeter then selects the correct range.
•
The
AUTO
and
DEFault
options for the range parameter have the same effect
(enable autorange). The
DEF
option for the resolution parameter defaults the
integration time to 1 PLC.
•
The
MIN
and
MAX
parameters select the minimum or maximum values for range
and resolution:
For range:
MIN
= 0.0795 V;
MAX
= 300 V.
For resolution:
MIN
selects the best resolution (the smallest value from Table 5-1) for
the selected range.
MAX
selects the worst resolution (the largest value from Table 5-1)
for the selected range.
•
The channel list is of the form
(@ccnn)
,
(@ccnn,ccnn),
or
(@ccnn:ccnn)
, where
cc
= card number and
nn
= channel number (105 is channel 05 of card number 1,
for example).
•
To select autorange, specify
AUTO
(or
DEF
) for range or do not specify a value
for the parameter. In the autorange mode, the multimeter samples the input signal
before each measurement and selects the appropriate range.
•
To specify a
MIN
or
MAX
resolution while autoranging, you must specify
CONF:VOLT:AC AUTO
or
CONF:VOLT:AC DEF
(you cannot omit the range
parameter). This prevents the
MIN
or
MAX
resolution from being interpreted as a
range setting.
•
The fastest aperture time available when autoranging is 100
µ
s. In order to specify an
aperture time of 10
µ
s, you must select a fixed range.
Example
Making AC Voltage Measurements
CONF:VOLT:AC 0.54,MAX,(@100:103)
!Function: AC volts;
range selected: 0.63V;
MAX resolution: 61.035
µ
V; specify
channel list.
TRIG:COUN 3
!Scan channel list 3 times (take 4 readings
per trigger); trigger source is IMMediate by
default.
READ?
!Place multimeter in wait-for-trigger state and
make measurements; send readings to output
buffer.
enter statement
!Enter readings into computer.
131 Command Reference
Chapter 5
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