Cadence II Fetal Monitor Service Manual
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Definitions for J8 2005S20P
TOCO Transducer
External TOCO transducer uses 4 pieces of strain gauges to form full-bridge. When
strain gauge is balanceable, the bridge is balanceable, and no output. When strain
gauge suffers the pressure, the bridge will lose balance, and produce an output signal.
Relevant contact force measurement range: 135g force, 100 units. The maximum
measurement is 600g.
Ultrasound Transducer
Central Frequency: 2MHz, 9 wafer structure
Fetal Movement Marker
Fetal movement marker inside is a vernier switch and equal to a key.
PIN No. Function Description
PIN1 Earth: 0V
PIN2 VCC
PIN3 ALARM_G
PIN4 VCC
PIN5 ALARM_R
PIN6 Earth: 0V
PIN7 POWER_LED
PIN8 Earth: 0V
PIN9 VDD
PIN10 Earth: 0V
PIN11 K0
PIN12 K5
PIN13 K1
PIN14 K6
PIN15 K2
PIN16 K7
PIN17 K3
PIN18 K8
PIN19 K4
PIN20 K9
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