User manual

18-44 SCPI Command Reference 2400 Series SourceMeter
®
User’s Manual
If the buffer is configured to store the result of CALC1 or CALC2
(:TRACe:FEED CALC1 or CALC2), only one result will be returned
by this query command.
Notes:
1. If there is no data in the buffer, error -230, “Data corrupt or stale,”
will be generated.
2. If there are a lot of readings stored in the buffer, some statistic
operations may take too long and cause a bus time-out error. To
avoid this, send the :CALA3:DATA? command and then wait for
the MAV (message available) bit in the Status Byte Register to
set before addressing the SourceMeter to talk. (See
Section 15,
“Status Structure.”)
3. See Appendix C, “Data Flow,” for a detailed explanation on how
data flows through the various operation blocks of the SourceM-
eter. It clarifies the types of readings that are acquired by the
various commands to read data.
DISPlay subsystem
The display subsystem controls the display of the SourceMeter and is summarized in
Table 18-2.
Control display
DIGits <n>
:DISPlay:DIGits <n> Set display resolution
Parameters <n> = 4 3.5 digit resolution
5 4.5 digit resolution
6 5.5 digit resolution
7 6.5 digit resolution
DEFault 5.5 digit resolution
MINimum 3.5 digit resolution
MAXimum 6.5 digit resolution
Query :DIGits? Query display resolution
:DIGits? DEFault Query *RST default resolution
:DIGits? MINimum Query lowest allowable display resolution
:DIGits? MAXimum Query largest allowable display resolution
Description This command is used to set the display resolution. Note that you
can instead use rational numbers. For example, to select 4.5 digit
resolution, you can send a parameter value of 4.5 (instead of 5). The
SourceMeter rounds the rational number to an integer.