7-10 Buffer (Data Store)
Series 2600 System SourceMeters Reference Manual
2600S-901-01 Rev. A / May 2006
Return to
Time and date values
All time and date values are represented as the number of seconds since the unit
was powered on. The
os.clock()
function returns values in this format.
Representing time as the number of seconds will be referred to as “standard time
format.” Note that because TSL numbers are floating point numbers, the precision
of time and date values relative to power-on will decrease the longer the unit is
powered on. This decrease in precision is approximately 0.06ppm of the total
elapsed time. This precision is generally much better than the time base of the
instrument and should not present any problems in practice. It is worth noting
because the user can directly see the affects as compared to the less obvious
time-base drift.
Buffer status
The buffer reading status attribute can include the status information as a numeric
value shown in
. To access status information, send the following
command:
stat_info = smua.nvbuffer1.statuses[2]
Table 7-7
Buffer status bits
Bit
Name
Hex
value
Description
B0
TBD
0x01
Reserved for future use.
B1
Overtemp
0x02
Over temperature condition.
B2
AutoRangeMeas
0x04
Measure range was auto ranged.
B3
AutoRangeSrc
0x08
Source range was auto ranged.
B4
4Wire
0x10
4W (remote) sense mode enabled.
B5
Rel
0x20
Rel applied to reading.
B6
Compliance1
0x40
Source function in compliance.
B7
Filtered
0x80
Reading was filtered.
Содержание SourceMeter 2600 Series
Страница 507: ...AppendixA Specifications Appendix A topics Model 2600S Specifications page A 2 2600S 901 01 Rev A May 2006...
Страница 575: ...AppendixF DisplayCharacterCodes Appendix F topics Introduction page F 2...
Страница 592: ......
Страница 593: ......