User Manual

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9.14 Setting the 8947 CHARGE UNIT
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CHARGE Measures using charge-output type voltage acceleration
pickup sensor
Preamp Measures using internal-preamp type acceleration pickup
sensor
Voltage Measures voltage waveforms
0
5 to 6 second
s
9
.14 Setting the 8947 CHARGE UNIT
The 8947 CHARGE UNIT can measure either voltage or acceleration on each
channel (one channel per measurement type). Refer to Section 9.3 for the
common settings.
■Notes regarding measurement
Auto-ranging cannot be used on a channel set for Charge or Preamp
measurement mode.
In the following cases, five to six seconds should be allowed for input to
stabilize:
(1) In the Charge measurement mode, after switching between the six high-
sensitivity ranges and the six low-sensitivity ranges.
(2) When starting a new measurement after selecting the Preamp
measurement mode.