Seaward DO5000 Interface - Manual (Page 18)

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DATAlogger:STEP
Forces a single measurement only, which is stored in the next datalog location.
The microhmmeter then returns to single trigger mode.
If the log has reached the COUNt value, any further STEP commands will
generate an ‘execution error’. The command will be ignored, and the
microhmmeter will remain in the single trigger mode.
DATAlogger:VALue? <value number|ALL>
Transfers a datalog reading from the memory to the output buffer. A value number
of between 1 and POINts will output one reading from that location. If ALL is
used, all readings are sent sequentially to the output buffer from location 1 to
POINts. Sending ABORt will cancel the operation. The output format is:
<record no.>,<“range”>,<resistance>,<“date”>,<“time”>
The “range” will include the letter ‘z’ if the Zero function was used on a
measurement, and the letter ‘T’ if Temperature Compensation was used.
DATAlogger:POINts?
Returns the number of readings actually stored in the datalog memory. The
response will be between 0 and COUNt.
CALCulate:DATA Group
These commands perform statistical calculations on the current contents of the data
log. A minimum of 2 readings must be stored otherwise an ‘execution error’ is
generated, i.e. bit (4) of the Standard Event Register is set. This error is also
generated if the log contains inconsistent entries, e.g. readings taken on different
ranges.
CALCulate:DATA:MINimum?
Returns the minimum resistance value stored in the data log.
CALCulate:DATA:MAXimum?
Returns the maximum resistance value stored in the data log.
CALCulate:DATA:AVERage?
Returns the average of all resistance values stored in the data log.
CALCulate:DATA:PTPeak?
Returns the peak-to-peak value of the resistance values stored in the data log,
i.e. max to min.
CALCulate:DATA:SDEViation?
Returns the standard deviation of the resistance values stored in the data log.
This is effectively a measure of rms noise.
CALCulate:LIMit Group
These commands are used to set and query t he lower and upper limit values used to
test the measured resistance. Exceeding these limits is reported in the Questionable
Data Register (bits 11 & 12).
CALCulate:LIMit:LOWer <value>
Sets the lower measurement limit. The value is in Ohms (0 - 30,000).
CALCulate:LIMit:LOWer?
Returns the lower measurement limit in Ohms.
CALCulate:LIMit:UPPer <value>
Sets the upper measurement limit. The value is in Ohms (0 - 30,000).