User Manual

XScopes
User’s Manual
DS-XScopes-3.5 – December, 2014 Page | 14
2.2 Vertical Settings
The analog channel controls are discussed in this section. Figure 19 shows the Vertical menu flow.
Figure 19: Vertical menus
2.2.1 Disable Channel
Any channel can be disabled; this is useful to reduce clutter on the display.
2.2.2 Channel Gain
Table 5 shows the possible gain settings for the analog channels. One gain division consists of
16 pixels. The current gain settings for the analog channels are shown in the top right part of
the display (If the SHOW setting of the display is enabled).
2.2.3 Channel Position
The position of the waveform can be moved up or down in the Channel Position menu.
2.2.4 Channel Invert
The channel can be inverted. The displayed waveform and channel calculations will be affected.
2.2.5 Channel Math
- Subtract: The channel trace will be replaced with the difference.
- Multiply: The channel trace will be replaced with the product.
- Average: The channel samples will be averaged to reduce
aliasing. (See Figure 20).
Channel Math Examples:
Gain Settings
(Volts / Division)
5.12
2.56
1.28
0.64
0.32
0.16
80m
CH1 and CH2
have identical settings.
To display CH1+CH2, first invert CH2 and then select the SUBTRACT
function.
Figure 22: Two signals
Figure 21: CH1+CH2
Figure 23: CH1xCH2
8 µs/div: 1 sample (no average)
16 us/div: 1 sample (no average)
32 µs/div to
10 ms/div: 2 samples are averaged
20 ms/div: 1 sample (no average)
50 ms/div: 2 samples are averaged
100 ms/div: 4 samples are averaged
200 ms/div: 8 samples are averaged
500 ms/div: 20 samples are averaged
1 s/div: 40 samples are averaged
2 s/div: 80 samples are averaged
5 s/div: 200 samples are averaged
10 s/div: 400 samples are averaged
20 s/div: 800 samples are averaged
50 s/div:2000 samples are averaged
Table 5: Gain Settings
Figure 20: Number of samples averaged when
enabling the channel AVERAGE option. The device’s
sampling rate is normally faster than needed to be
able to average samples