Table G-1 Scpi/488.1 Reading Speed Comparisons For Measure-Only Sweep Operation (Rdgs/Sec); Table G-2 Scpi/488.1 Reading Speed Comparisons For Source-Measure Sweep Operation (Rdgs/Sec) - Keithley SourceMeter 2400 User Manual

G-6 GPIB 488.1 Protocol
GPIB reading speed comparisons
The tables that follow compare the differences in reading speed for the SCPI and 488.1
protocols. Included in all tables is the percentage improvement achieved with the 488.1
protocol compared to the SCPI protocol. The most significant speed improvements are
shown in the shaded areas of the tables.
Sweep operation
Table G-1 through
source-measure-limit test, and source-memory sweep operation respectively. Note that the
reading rate for sweep operation can be increased by almost 50%.
Table G-1
SCPI/488.1 reading speed comparisons
for measure-only sweep operation (rdgs/sec)
Speed NPLC/Trig. origin
Fast 0.01/internal
0.01/external
Medium 0.10/internal
0.10.external
Normal 1.00/internal
1.00/external
Table G-2
SCPI/488.1 reading speed comparisons
for source-measure sweep operation (rdgs/sec)
Speed NPLC/Trig. origin
Fast 0.01/internal
0.01/external
Medium 0.10/internal
0.10.external
Normal 1.00/internal
1.00/external
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2400 Series SourceMeter
Table G-4 show bus reading rates for measure-only, source-measure,
SCPI
1198.7 1759.6
1079.3 1254.7
509.6 511.5
438.4 440.2
59.0 59.0
57.9 57.9
SCPI
999.9 1369.3
916.0 1035.2
470.2 471.6
409.3 409.8
58.4 58.4
57.3 57.3
®
User's Manual
488.1 Improvement
46.78%
16.25%
0.37%
0.41%
0.00%
0.00%
488.1 Improvement
36.94%
13.02%
0.29%
0.12%
0.00%
0.00%