Chapter 14 Rear Panel Auxiliary I/O Section; External Trigger Input, External Clock Input, And Trigger Gate Input - YOKOGAWA DL7440 User Manual

Chapter 14 Rear Panel Auxiliary I/O Section

14.1 External Trigger Input, External Clock Input,
and Trigger Gate Input
External Trigger Input Terminal
External Clock Input Terminal
IM 701450-01E
Only input signals that meet the specifications below. Otherwise, undesirable
signal such as excessive voltage may damage the DL7400.
This terminal is used when an external signal is used as a trigger source (see section
6.6). This terminal is also used as the external clock input terminal (EXT CLOCK IN) and
the trigger gate input terminal (TRIG GATE IN).
Item
Connector type
Maximum input voltage
Input frequency bandwidth
Input impedance
Input range
Trigger sensitivity
Trigger level
EXT CLOCK IN
EXT TRIG IN
TRIG GATE IN
≤40Vpk 1MΩ
Use this terminal if you wish to operate the DL7400 using an external clock signal (see
section 5.11). This terminal is also used as the external trigger input terminal (EXT TRIG
IN) and the trigger gate input terminal (TRIG GATE IN).
Item
Connector type
Maximum input voltage
Frequency range
Input impedance
Input range
Threshold level
Minimum input amplitude
Minimum pulse width
EXT CLOCK IN
EXT TRIG IN
TRIG GATE IN
≤40Vpk 1MΩ
Note
The threshold level for the external clock input and the trigger level for the external trigger
input are common.
CAUTION
Specifications
BNC
±40 V (DC+ACpeak) or 28 Vrms when the frequency is 10 kHz or
less
DC to 100 MHz
Approx. 1 MΩ, approx. 22 pF
±2 V
0.1 V
P-P
±2 V (resolution is 5 mV)
Specifications
BNC
±40 V (DC+ACpeak) or 28 Vrms when the frequency is 10 kHz or
less
40 Hz to 20 MHz (continuous clock only)
Approx. 1 MΩ, approx. 22 pF
±2 V
±2 V (resolution is 5 mV)
0.1 V
P-P
10 ns or more for high and low
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