Hioki 8847, Instruction Manual

Page: 236 / 372

13.4 Selecting Channels
226
Channel selection is the same for all functions.
For the setting method, refer to "3.5 Input Channel Setting" (

p.49) and "8.10 Making Detailed
Settings for Input Modules" (

p.140).

Scaling
The scaling setting allows values displayed on this instrument to match the actual values read directly on
a sound level meter or vibration meter.
Setting example: To display measurement data on this instrument so that it corresponds
to that on a sound level meter.
In a case where a sound level meter displays 93.5 dB and the overall value displayed on the Wave-
form screen of this instrument is -6-51 dB.
13.4 Selecting Channels
Without Scaling
With Scaling
5 4
1
2
3
Sound Level Meter
93.5
93.5
1
Select [Num] .
2
Select [Ratio] .
3
Move the cursor to [Ratio] , and press the
F1 [dB Scaling] key.
The dB Scaling dialog appears.
4
Enter the (overall) value “-6.51” displayed
on the instrument.
5
Enter the value "93.5" (from the sound
level meter) that you want to read
directly.
6
Press F5 [Confirm] key to perform scal-
ing.
Scaling is performed automatically and the con-
version value is set in the conversion rate column.
See:
"Overall Value"(

p.A21)
Overall: -6.51dB
0 dB reference differs depends on the physical quantity.
As an example for sound pressure, 20
μ
Pa is 0 dB.
In dB scaling, the dB value can be directly read; howev-
er, it may not be possible to directly read instantaneous
values.
Read the written standards and other materials regard-
ing 0 dB references.
93.5
93.5