Bnc 1105 Universal Counter Manuel d'utilisateur télécharger pdf (Page 39)

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measurements. For totalize measurements, the counter starts to

count whenever Run button or Stop/Single button is pressed.

Figure 4-7

 Time Arming

Under the time arming mode as shown in the Figure 4-8 for the

available measurement including frequency, period, ratio and

totalize, users can set the length of time (gate time) for which the

counter takes measurement.

Figure 4-8

Note1: The Gate Time Range on the frequency and the period is from

1E-3 to 1000 seconds.

Note2: The Gate Time Range on the Ratio is from 1E-3 to 200

seconds.

 External Arming

Under the External Arming mode as shown in the Figure 4-9 for the

available measurement including period, frequency ratio and

totalize, a signal source must be connected to the Ext Arm connector

on the rear panel. Start and end of measurement is then controlled

by the external signal.

When the External Arming is toggled, two more items are available

to set. One is Start (Neg/Pos), and the other one is Stop

(Neg/Pos/Time/Auto)

Figure 4-9

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Bnc 1105 Universal Counter Manuel d'utilisateur Page 39