YOKOGAWA FG420, Руководство пользователя

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17 IM FG410-01JA
3.2.4 External trigger input ( TRIG IN)
CH2
TRIG IN
TRIG IN CH1
TRIG IN
FG420 FG410
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)
FG420 FG410
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