HP 34970A manual SYSTemTIMESCAN?, FETCh?, ? tx, See Reading Format Commands on

Chapter 5 Remote Interface Reference

Scanning Overview

SYSTem:TIME:SCAN?

Read the time at the start of the scan. This command is not affected by the FORMat:READ:TIME:TYPE command. Returns the time in the form “1997,06,02,18,30,00.000” (June 1, 1997 at 6:30 PM).

FETCh?

Transfer readings stored in non-volatile memory to the instrument’s output buffer where you can read them into your computer. The readings

vz erased from memory when you read then using FETCh?. The output from this command is affected by the FORMat:READing commands (see “Reading Format Commands” on page 231).

R? [<tx >]

Read and erase all readings from reading memory up to max_count. The readings are erased from memory starting with the oldest reading. This is a special version of the DATA:REMove? command with faster execution time. If you omit the optional max_count parameter, the command will read and erase up to 50,0000 readings from memory. The output from this command is affected by the FORMat:READing commands

(see “Reading Format Commands” on page 231).

This command returns a series of readings in SCPI definite length block format. The response begins with the “#” character, followed by a single character representing the number of succeeding characters to interpret as a length specifier, followed by a length specifier representing the number of bytes in the block, followed by a block of that many bytes.

For example, the R? command will return a string similar to the following (two readings are shown):

#231+2.61400000E+01,2.62400000E+01

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