4. ADJUSTMENT
4-14
Buffer circuit for negative-going KP
5 to 15V
CI-8810
2K
H
C
TB4
Interfering
Equipment
Additional Circuit
Interference
Rejector
KP out
Approx.
300
Approx.
300
The following method also is available.
CI-8810
12 V
H
C
TB4
Additional Circuit
Interference
Rejector
Buffer circuit for keying pulse (KP)
DIP switch settings
When KP signal is input to KP IN1, set the switch S1-#3 on the PCN Board 66P3924 to ON.
KP signal is positive logic: Set the switch S1-#1 on the PCN Board to OFF.
KP signal is negative logic: Set the switch S1-#1 on the PCN Board to ON
When KP signal is input to KP IN2, set the switch S1-#4 on the PCN Board 66P3924 to ON.
KP signal is positive logic: Set the switch S1-#2 on the PCN Board to OFF.
KP signal is negative logic: Set the switch S1-#2 on the PCN Board to ON
Output
When outputting keying pulse to suppress interference to other ultrasound equipment, take
the TX trigger pulse from TB4 (KP OUT), which is the KP terminal for external output.
5V
TB-4
KP OUT
7 H
8 C
CR12
5V
220
Ω
PCN (66P3924)
Содержание CI-88
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