YOKOGAWA FG420 - External Trigger Input (TRIG IN); External 10 Mhz Frequency Reference Input (10 Mhz REF IN)

17
IM FG410-01JA
3.2.4 Externaltrigger input (TRIGIN)
CH2
TRIG IN
TRIG IN CH1
TRIG IN
FG420FG410
TRIG IN may be used as external trigger input in the following cases. The polarity setting can be
changed.
• Single-shot sweep start trigger

p. 94.
• Gated single-shot sweep start trigger

p. 94.
• Trigger burst oscillation start trigger

p. 115.
• Gate of gated oscillation

p. 119.
• Triggered gate oscillation trigger

p. 124.
• Sequence oscillation start trigger

“6.2 Basics” in the Application Instruction Manual
• TRIG IN can also be used as the external modulation input for FSK and PSK

p. 77
 InputCharacteristics
Input voltage TTL level (low: 0.8 V or lower; high: 2.6 V or higher)
Maximum allowed input
-0.
5 V to +5.5 V
Input impedance
10 k
Ω
, pull up to +3.3 V
Signal GND Same potential as housing
3.2.5 External10MHzfrequencyreferenceinput(10MHzREFIN)
FG420FG410
10MHz REF IN
[Insulated from housing]
10MHz REF IN
[Insulated from housing]
10 MHz REF IN can be used for the following purposes.
3.2 I/O Terminals