Bnc 1105 Universal Counter Manual de usuario Pagina 38

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4.3 Gate & External Arm operations
The MODEL 1105 provides four arming modes: auto, time, digits and
external. The descriptions are below the following table, giving the
selection items under the functions, such as Freq/Period/Ratio, Phase,
Totalize, Rise/Fall time and Time Interval:
Freq,Period,
Ratio
Phase Totalize
Rise Time,Fall Time,
+/-Width,Dutycycle
Time Interval
Auto Arming:
Auto Arming:
Auto Arming:
Auto Arming: Auto Arming:
Gate:
Auto ARM:
Auto Gate:
Auto Gate:
Auto
*ARM:
Delay*:
Time*:
Event*:
Auto
None
Time
Event
<time>
<events>
Digits Arming:
Gate:
Digits:
Digits
<digits>
Time Arming:
Time Arming:
Gate:
Time:
Time
<time>
Gate:
Time:
Time
<time>
External Arming:
External
Arming:
External
Arming:
External Arming:
External Arming:
Gate:
Start:
Stop:
Time:
Ext
POS
NEG
Auto
NEG
POS
Time
<time>
ARM:
Slop:
Ext
POS
NEG
Gate:
Start:
Stop:
Time:
Ext
POS
NEG
NEG
POS
Time
<time>
Gate:
Slop:
Ext
POS
NEG
*ARM:
*Slop:
*Delay:
*Time:
*Event:
Stop*:
Slop*:
Delay*
Time*:
Event*:
Ext
POS
NEG
None
Time
Event
<time>
<events>
Auto
Ext
POS
NEG
None
Time
Event
<time>
<events>
Auto Arming
Under the Auto Arming mode as shown in the Figure 4-7 for the
available measurement including frequency, period, frequency ratio,
risetime, falltime, pulse width, dutycycle and phase, the counter
takes measurements as fast as possible, except for totalize
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