YOKOGAWA DL6000 Series

5-3
IM DLM6054-01EN
Vertical and Horizontal Control
3
2
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Index
App
Explanation
Waveform Display (Display)
The keys of the displayed channels (CH1 to CH4) illuminate.
When you press a channel key that is not illuminated, the key illuminates, and the channel’s waveform
is displayed.
When you press a channel key that is illuminated, the key light turns off, and the channel’s waveform
display is cleared.
Note
When Interleave mode (described in section 7.1) is on, you cannot display the waveforms for CH2 and CH4.
Input Coupling (Coupling)
You can choose one of the following methods for coupling the vertical control circuit to the input signal.
AC Only the waveform produced from the input signal’s AC component is displayed
DC The waveform produced from both the DC and AC components of the input signal is displayed. (The
input impedance is 1 M
Ω
.)
You can only select this option when you are measuring voltage.
GND Use this input coupling method to check the ground level.
DC50 The waveform produced from both the DC and AC components of the input signal is displayed. (The
input signal impedance is set to 50
Ω
.)
Input Coupling Settings and Frequency Response
The frequency responses for the AC and DC input coupling methods are shown below.
Please note that, as is indicated in the figure shown below, when the DL6000/DLM6000 is set to
AC, it does not acquire low frequency signals or low frequency components.
0 dB
–3 dB
–3 dB point*
Attenuation
0 dB
–3 dB
–3 dB point*
Attenuation
With a 1:1 probe and a frequency
less than or equal to 10 kHz
With a 10:1 probe and a frequency
less than or equal to 1 kHz
Input frequency
Input frequency
When Coupling Is Set to AC When Coupling Is Set to DC
* The high-frequency –3 dB point differs based on the model and the voltage scale settings.
CAUTION
• When the input impedance is 1 M
Ω
and the frequency is less than or equal to 1 kHz, the
maximum input voltage is 150 Vrms. Applying a greater voltage may damage the input
section. For frequencies above 1 kHz, damage may occur even if the voltage is less than
150 Vrms.
• When the input impedance is 50
Ω
, the maximum input voltage is 5 Vrms or 10 Vpeak.
Applying a voltage greater than either of these limits may damage the input section.
Note
If you are using a probe that is compatible with the DL6000/DLM6000 probe interface, the DL6000/DLM6000
automatically configures the input impedance (50
Ω
or 1 M
Ω
) and the probe attenuation.
5.1 Vertical Axis Settings for Analog Input Signals