Keysight 53210A, User Manual

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7 Formats and Data Flow
200 Keysight 53210A User’s Guide
DATA:POINts?
The reading count can be read before the total reading count is reached
(
TRIGger:COUNt
x
SAMPle:COUNt
).
Setting a Reading Threshold in Memory
The following command allows you to set a reading threshold in the counter’s
volatile memory:
DATA:POINts:EVENt:THReshold <count>
DATA:POINts:EVENt:THReshold? (query form)
- when
count
number of readings have entered reading memory, bit 12 (Rdg Mem
Threshold) in the Standard Operation Register is set to ‘1’. By monitoring this bit,
readings can be transferred from memory to the output buffer once a given
number of measurements have occurred.
Once the threshold is reached, the number of readings in memory must drop
below the threshold level in order to detect when the threshold is reached again.
Memory Threshold Example
(Note, this example is also contained on the Keysight 53210A/53220A/53230A
Product Reference CD ROM.)
This program sets up the counter to take 1,250,000 readings. Because volatile
reading memory capacity is 1,000,000 readings, readings will be over-written
(memory overflow) if data is not retrieved before memory fills. To prevent memory
overflow, a reading threshold is set and monitored. When the number of readings
in memory reaches the threshold, all readings in memory at that time are
retrieved.