53220A/53230A User’s Guide 241
Formats and Data Flow 7
Table 7-2. Commands Affecting Data Flow
Front Panel Display
Counter measurements taken from the front panel or from an IO interface
appear in the display as indicated in Figure 7-1. See Chapter 1 for an overview
of display features.
Reading Memory
In addition to being displayed, all counter readings are stored in the counter’s
volatile reading memory (Figure 7-1). Memory capacity is 1,000,000 readings.
Reading memory has the following attributes:
1 reading memory is cleared after a function change, during execution of the
READ?, INITiate:IMMediate, or MEASure? command, after cycling
power, or following an instrument reset (*RST) or preset
(SYSTem:PRESet).
Command
Locations
Accessed
Readings
Transferred
Reading
Memory
Cleared
Allowed during
Measurement
Read?
Front Panel
Reading Memory
Output Buffer
All No No
INITiate:IMMediate
Front Panel
Reading Memory
None
Yes No
FETCh?
Reading Memory
Output Buffer
All No No
R?
Reading Memory
Output Buffer
All or
specified count
Yes Ye s
DATA:REMove?
Reading Memory
Output Buffer
Specified Count Yes Yes
DATA:LAST?
Reading Memory
Output Buffer
1NoYes
MMEMORY:STORe:DATA
Reading Memory
Internal Flash
External USB
All No No
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