Bnc 1105 Universal Counter Manuel d'utilisateur télécharger pdf (Page 22)

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Making Measurements

This chapter guides users how to make some basic measurement via the

MODEL 1105 universal counter, and to get to know the relative default

parameters.

3.1 Frequency Measurement

Auto triggering is enabled by default for frequency measurement, and

the trigger levels are set to the 50% points of the signal. One may

manually disable the auto triggering function and change the trigger

levels and slopes settings (refer to Ch.4.8).

To measure frequency

1. Connect your signal source to the input channel you wish to use.

2. Press FREQ & RATIO button.

3. Press the softkey FREQ to select frequency measurement function.

Press it again to select the desired channel.

4. Optional settings:

a. Use GATE&ExtArm button to set the gate time, resolution or arming

if needed (refer to Ch.4.3).

b. Use Scale&Offset button to set the scaling and offset parameters if

it’s needed (refer to Ch.4.4).

c. Use Limit Modes button to set the upper and lower limits if it’s

needed (refer to Ch.4.5).

d. Use Stats button to set up the statistics function and limit filtering if

it’s needed (refer to Ch.4.6).

e. Use the selections in the CH1 to set the input conditions and the trig

Sens.

f. Use Show Status button to check the conditions of Input, Volt, Stats

and Limit.

g. Use Save&Recall button to save your settings (i.e., changes made in

steps a-d) if needed (refer to Ch.4.9).

5. Press RUN button to start continuous measurements.

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Bnc 1105 Universal Counter Manuel d'utilisateur Page 22