Model 2700 Multimeter/Switch System User’s Manual Buffer 6-11
c. SYSTem:TSTamp:TYPE RELative | RTClock Select timestamp
SYSTem:TSTamp:TYPE? Query timestamp type; next storage
TRACe:TSTamp:TYPE? Query timestamp type; readings in buffer
SYSTem:TSTamp:TYPE <name> — Use to select the relative timestamp or the real-time
timestamp. Note that changing the timestamp will clear the buffer if a storage is in process.
If no storage is in process, changing the timestamp will not clear the buffer.
SYSTem:TSTamp:TYPE? and TRACe:TSTamp:TYPE? — Both of these commands query
the timestamp type. However, SYSTem:TSTamp:TYPE? queries the timestamp that will be
used for the next storage operation, while TRACe:TSTamp:TYPE? queries the timestamp
for readings that are presently stored in the buffer.
d. TRACe:CLEar Clear the buffer
TRACe:CLEar:AUTO ON | OFF Control (on/off) buffer auto-clear
TRACe:CLEar — Used to clear the buffer. Buffer readings are not lost (cleared) when the
Model 2700 is turned off.
When TRAC:CLE is sent while displaying stored readings, the message “BUF CLEARED”
is briefly displayed, and the instrument returns to the normal measurement state.
TRACe:CLEar:AUTO — With auto-clear enabled, the buffer will automatically clear when
the storage process starts. When disabled, readings will append to old readings in the buffer
until the buffer becomes full (55,000 readings) or the storage process is stopped. Disabling
auto-clear automatically sets the buffer size to 55,000.
e. TRACe:FREE? Query status of storage memory
Returns two values separated by commas. The first value indicates, in bytes, memory
available for storage, while the second value indicates the number of bytes being used for
stored readings.
f. TRACe:POINts 2 to 55000 Set buffer size
With buffer auto-clear enabled, you can set the buffer to store from 2 to 55,000 readings. A
buffer size of zero or one is not valid (error -222).
With buffer auto-clear disabled, you cannot use this command to set buffer size (error -221)
because it is fixed at 55,000.
NOTE The
G
full and
I
buffer full measurement events are not intended to be used with
buffer size smaller than four readings.
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