BK Precision 2194 - Channel Coupling; Bandwidth Limit; Adjust

Vertical Controls 23
3.2.1 Channel Coupling
Coupling mode lters out the undesired signals.
Press the corresponding CH button, then use the softkeys to select Coupling.
Turn the Universal Knob to select the desired coupling method.
Note:
The current coupling method is displayed in the channel label at the right side of the screen. Pressing the Coupling
softkey continuously switches between the available coupling method.
• DC Coupling: The DC and AC components of the signal under test are both passed.
• AC Coupling: The DC components of the signal under test are blocked.
• GND Coupling: The DC and AC components of the signal under test are both blocked.
3.2.2 Bandwidth Limit
Sets the bandwidth limit to reduce display noise.
Press the CH button of the channel to be congured.
Use the softkeys to select BW Limit. (The bandwidth limit will alternate between Full and 20 M)
• Full: The high frequency components of the signal under test can pass the channel.
• 20 M: The high frequency components exceeding 20 MHz are attenuated.
3.2.3 Adjust
Adjust the vertical scale sensitivity of the selected channel.
The vertical scale is adjusted using the Vertical Variable Knob.
Press the CH button of the channel to be congured.
Use the softkeys to select Adjust. (The scale will alternate between Fine and Coarse)
If the amplitude of the input waveform is a little bit greater than the full scale under the current scale and the amplitude
would be a little bit lower if the next scale is used, ne adjustment can be used to improve the amplitude of waveform
display to view signal details.
• Fine adjustment: Adjust the vertical scale within a relatively smaller range to improve vertical resolution.
– For example: 2 V/div, 1.98V/div, 1.96V/div, 1.94 V/div, ...1 V/div.
• Coarse: Adjust the vertical scale in a 1-2-5 step.
– For example: 1 mV/div, 2 mV/div, 5 mV/div, 10 mV/div 200 mV/div, 500 mV/div,... 10 V/div.
The scale information in the channel label at the right side of the screen will change accordingly during the adjustment.
The adjustable range of the vertical scale is related to the probe ratio currently set.