![YOKOGAWA TA320 User Manual Download Page 60](http://html.mh-extra.com/html/yokogawa/ta320/ta320_user-manual_911358060.webp)
6-7
IM 704210-01E
Setting the Acquisition Conditions for Input Signal to be Measured
6
• Setting the number of events (required only when EVENT is selected at step 7)
10. After step 7, press the D.EVENT touch key to highlight D.EVENT.
11. Turn the rotary knob to select the desired number of events.
Auto arming menu
Selects the arming source.
External arming menu
Sets the delay time/number of events.
No touch key is displayed if OFF is selected
as the arming delay type, and D.EVENT
touch key is displayed if EVENT is selected.
Selects the arming source.
Selects the slope.
Selects the arming delay type.
Explanation
Selecting the arming source
Selects the desired arming source from the following.
• AUTO : Auto arming
• EXT : External arming
Points to note when selecting EXTERNAL
Input the external arming signal to the EXT ARM terminal on the rear panel.
• Input impedance : 10 k
Ω
(Typical *)
• Input coupling : DC
• Trigger level : TTL level
• Maximum input voltage : –8 V to 13 V (DC + AC
peak
)
• Minimum pulse width : 30 ns
• Setup time : 70 ns (in order for the arming signal to be valid, it must precede the measurement
signal by no less than 70 ns)
* Typical value is described in terms of typical of average performance. However, they cannot
be guaranteed.
(External arming
input terminal)
External arming input circuit (shared with the external gating signal)
IN
EXT ARM
(
TTL
)
+5V
10k
Ω
74LS14 or
equivalent
500
Ω
CAUTION
Never apply a voltage exceeding the maximum input voltage to the external arming input
terminal (EXT ARM IN). Damage to the terminal may result.
6.3 Setting the Arming Source, Slope and Delay Types