MR8740T_Quick guide_eng_20191016H.pdf - 第77页
71 Conguring the Input Channel settings Analog channel > [Channel] > [UNIT] 2 5 4 1 3 6 7 1 Enter a comment in the [Comment] box. Number of characters that can be entered: up to 40 2 Click the [Mode] box, and then…
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Conguring the Input Channel settings
3.3 Conguring the Input Channel settings
Congure the analog channel settings.
Channel setting procedure
This section describes how to congure the analog channel (CH1-1 through CH27-4) settings. For
details of analog channels such as a setting of each module, refer to
“1.3 Specifying Input Channel
Settings”
of the Instruction Manual.
Conguring the input settings
Choose a measurement mode.
Choose a measurement range for each measuring object.
Choose an input coupling method.
Choose a low-pass lter cutoff frequency (if noise is present).
Congure each module settings (as required).
Conguring the display settings
Select waveform colors.
Choose a display position and magnication ratio (as required).
Fine-adjust waveform amplitude (vernier function).
Convert input values. (scaling function)
Conguring the trigger settings (as required)
Congure the level trigger settings.
• When the input coupling method is set to GND, the instrument measures the ground potential in
the module; thus, it does not measure any input waveforms.
• An inuence of the lter attenuation may prevent the instrument from setting an appropriate
range.
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Conguring the Input Channel settings
Analog channel
> [Channel] > [UNIT]
2
5
4
1
3
6
7
1
Enter a comment in the [Comment] box.
Number of characters that can be entered: up to 40
2
Click the [Mode] box, and then choose a measurement mode from the list.
Voltage
Measures a waveform in voltage mode.
Temperature Measures a waveform in temperature mode.
Selectable modes vary depending on the installed modules.
Refer to “3.6 Conguring Module-Specic Settings” of the Instruction Manual.
3
Click the [Range (f.s.)] box, and then choose a measurement range from the list.
The measurement ranges that can be chosen varies depending on modules.
If an input voltage exceeds the measurable range (overrange), change the measurement range to one with a
lower sensitivity.
3
Measurement Method
72
Conguring the Input Channel settings
4
Select a cutoff frequency of the low-pass lter and a probe ratio in [L.P.F] and [Probe ratio],
respectively.
Click the area that includes [L.P.F] and [Probe ratio] allows the setting dialog box to appear.
(1)
(2)
(1) Click the [L.P.F] box, and then choose a cutoff frequency of the low-pass lter from the
list.
Enabling the low-pass lter in the module eliminates excessive harmonic components.
Available cutoff frequencies of the low-pass lter vary depending on the module type. Choose an adequate
cutoff frequency depending on the characteristics of an input signal.
Example: Model 8966 Analog Unit
Off
, 5 Hz, 50 Hz, 500 Hz, 5 kHz, 50 kHz, 500 kHz
(2) Click the [Probe ratio] box, and then choose a probe ratio from the list.
Congure this setting when you perform measurement using the instrument with connection cords or probes
connected.
1:1
Choose this option when using any of the following cords:
• Model L9197 Connection Cord
• Model L9790 Connection Cord
• Model L9198 Connection Cord (for low voltage)
• Model L9217 Connection Cord
1:10 Choose this ratio when using Model 9665 10:1 Probe.
1:100 Choose this ratio when using Model 9666 100:1 Probe, Model P9000-01 Differential
Probe, or Model P9000-02 Differential Probe.
1:1000 Choose this option when using Model 9322, Model P9000-01, or Model P9000-02
Differential Probe.
5
Click the [Display] button to set it to [On] or [Off].
On
Displays the waveform on the waveform screen.
Off Does not display any waveform.
6
When the [Display] button has been set to [On], click the box next to [On] on the right, and
choose a display color from the color pallet.
You can also choose the same color as lines acquired across other channels.
7
Switch the channels.
Switch the channels by clicking the corresponding point on the display.