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TTI-7 Iss.02 – 06/11
DATAlogger:STOP
Forces the trigger-hold mode, and terminates the current measurement cycle. DATAlogger:STARt or
DATAlogger:STEP commands can be used to continue the log from this point.
This command is only active when DATAlogger:MODE is ON.
DATAlogger:STEP
Forces the trigger-single mode and takes a single measurement only, which is stored in the next datalog location.
The command can be used to step through a scanner routine, saving the results in the data logger memory.
On completion of the scanner routine, the next STEP command will reset the scanner routine to the beginning, and
start the next cycle. If the data logger memory is full, any further STEP commands will generate an “execution error”,
and the command will be ignored.
This command is only active when DATAlogger:MODE is ON.
DATAlogger:VALue? <
value/all
>
Transfers a datalog reading from the memory to the output buffer. A value 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.>,”<channel>”,<temperature>,”<unit>”,”<date>”,”<time>”
DATAlogger:POINts?
Queries the number of readings actually stored in the datalog memory. The response will be between 0 and 4000.
Mathematical Operation Commands
CALCulate:AVERage Group
This group of 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, i.e. readings taken on different channels.
CALCulate:AVERage:MINimum?
Returns the minimum temperature value stored in the data log.
CALCulate:AVERage:MAXimum?
Returns the maximum temperature value stored in the data log.
CALCulate:AVERage:AVERage?
Returns the average of all temperature values stored in the data log.
CALCulate:AVERage:COUNt?
Returns the number of readings stored in the data log.
CALCulate:AVERage:PEAK?
Returns the peak-to-peak value of the temperature values stored in the data log i.e. max - min.
CALCulate:AVERage:SDEV?
Returns the standard deviation of the temperature values stored in the data log. This is effectively a measure of rms
noise.
