Hioki 3504-40 C HiTester, Instruction Manual

Page: 237 / 292

8.9 Message Reference
231
8
Query of Measurement Values Saved to Memory by the Measurement
Value Memory Function
Syntax Query
Response :MEMory?
<Character>
<Character> = No Data/ ALL
• When there is no data section
<First Item in Memory><Message Terminator><Second Item in
Memory><Message Terminator>...<nth Item in Memory> <Message
Terminator>
n indicates a number up to 32,000.
• When the characters of the data section are ALL
<First Item in Memory><Comma( ,)><Second Item in Memory>
<Comma(,)>...<nth Item in Memory><Message Terminator>
Explanation
Query • Returns all of the most recent measurement values saved to mem-
ory by the measurement value memory function.
• The measurement results for a maximum of 32,000 most recent
measurements are saved to memory.
When command :MEMory? is carried out, the memory contents will
be cleared. Before retrieving memory content, use command
:MEMory:CLEar to delete the memory contents.
• The format of items in memory is the same as that of the response
data of the :MEASure? query. For details on the format, refer to the
explanation of the :MEASure? query (p. 226).
• A memory terminator is inserted between each memory item when
:MEMory? and a comma (,) is inserted between each memory item
when :MEMory? ALL.
• The number of data items currently saved to memory can be con-
firmed with the :MEMory:COUNt? query.
• If the trigger setting is set to internal trigger, the number of data
items obtained with the :MEMory:COUNt? query and the n value
may differ. Set the trigger setting to external trigger before using
the :MEMory:COUNt? query.
Example
When :MEMory? is executed, only the first item in memory
is returned with the first receive operation (specified
talker). To obtain all measurement values saved to mem-
ory, perform the receive operation a number of times equal
to the number of data items saved to memory or send
:MEMory? ALL and then perform the receive operation
once.
The only difference between :MEMory? and :MEMory?
ALL is whether data is separated by a message terminator
or comma (,).
When :MEMory? is executed, there is no need to perform
the receive operation a number of times equal to the num-
ber of data items saved to memory in order to obtain all
measurement values.