User Manual

3.6 Model 8947 Charge Unit Settings
57
3.6.2 Acceleration Measurement (Charge, Preamp)
Setting Procedure
Use the CURSOR keys to move among items. Select a setting with the F1 to F8 keys.
Step
Setting Item
Description
1
Select the module No.
[Unit ]
Select the number of the input module to set up.
("Channel Configuration" (
⇒ p. 15))
2
Select the channel No.
[Ch ]
Select the channel number on the input module.
3
Confirm the module
[Module]
Confirm that the display is set for [Charge].
4
Select the measurement mode
[Mode]
Select the measurement mode.
• [Charge]: When using a charge-output acceleration pick-
up sensor
• [Preamp]: When using an acceleration pick-up sensor
equipped with an internal preamp
5
Set sensor sensitivity
[Sensitivity]
Set the value per m/s
2
defined for the acceleration sensor to
be used
(⇒ p. 73).
"Sensor Sensitivity Setting Examples" (
⇒ p. 73)
6
Select the measurement range
[Range]
Select the appropriate measurement range. The setting val-
ue is the units per division on the vertical axis.
(Units: m/s
2
= acceleration)
The RANGE/POSN knob selects the range.
Refer to the specifications for available ranges (
⇒ p. 95).
7
Select the input coupling method
[Coupling]
Select the coupling method for input signals (⇒ p. 65).
[ AC or GND ]
8
Select the low-pass filter
[LPF]
To suppress high-frequency components, select a low-pass
filter within the input module (
⇒ p. 66).
[ Off, 500Hz or 5kHz ]
9
Set the anti-aliasing filter
[AAF]
Turn this on to suppress anti-aliasing distortion, such as for
FFT analysis
(⇒ p. 67).
[ Off or On ]
10
Perform zero adjustment
[ Zero-Adjust ]
Perform at least one hour after turning power on
(
⇒ p. 76).
Set up scaling
Set as occasion demands.
See
"To convert [m/s
2
] units to [G] for display" (⇒ p. 73) in this
manual,
"5.4 Converting Input Values (Scaling Function)" in the
Instruction Manual
10
([One Ch] Page of Channel Setting Screen)
9
12 3
6
7
4
5
The [Charge] measurement mode is
selected upon system reset.
8