PARAMETER VALUE/SETTING
Burst
Sync Delay 400 ms
Start Delay 0
Meas. Time 200 ms
Freq. Limit 400 MHz
Miscellaneous
Function FREQA
Smart Frequency AUTO
Smart Time Interval OFF
Meas. Time 200 ms
Auto Trig Low Freq 100 Hz
Timebase Reference AUTO
Blank Digits 0
Interpolator calibration ON
Output (CNT-91(R)) OFF
4. Chapter 3: Input Signal Conditioning
4.1. Input Amplifier
The input amplifiers are used for adapting the widely varying signals in the ambient world to the measuring logic of the
timer/counter.
These amplifiers have many controls, and it is essential to understand how these controls work together and affect the
signal.
The block diagram below shows the order in which the different controls are connected. It is not a complete technical
diagram but intended to help understanding the controls.
The menus from which you can adjust the settings for the two main measurement channels are reached by pressing
INPUT A respectively INPUT B. See Figure 3-2. The active choices are shown in boldface on the bottom line.
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