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How to Measure Fast
Speed Summary 7-13
Block Synchronized Measurements
(:ARM:STARt:LAYer:COUNt 1 and TRIG:COUNt <N>)
Speed Improvement Actions
Dead Time Between Measurements
CAL:INT:AUTO OFF
Display OFF
Realtime calculations OFF
([SENS]:INT:FORM PACK)
Low resolution
([SENS]:ACQ:RES LOW)
PM6680B PM6681 PM6685
9 ms 4.5 ms 9 ms
U
2 ms 1.3 ms 2.5 ms
UU
0.5 ms 0.12 ms 0.6 ms
UUU
0.5 ms 0.025 ms* 0.6 ms
+
1: The GPIB format command will not affect the dead time for the block synchro-
nized mode because the counter captures all data before transferring it to the con-
troller.
+
2: Switching the real time calculations on/off In the block synchronized mode will
significantly decrease the dead time; however, the time for calculations(2msfor
PM6680B/85 and 1 ms for PM6681) is added to the transfer time.
*
In PM6681, low resolution is used for Back-to-Back period measurements.
The measuring time has no effect in this mode. Only the Timestamps are used.