Operating Instruction

Simplified Operating Instruction, 340M OB Telemetry, 608-614MHz
GE Medical Systems Information Technologies 4/9/01
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340M OB Telemetry Simplified Operating Instructions
Overview:
The 340M OB Telemetry system is comprised of a transmitter and receiver to provide an RF link between
patient worn transducers and fetal monitor, allowing patient to freely move about while staff monitor fetal
heart rate and uterine contractions remotely.
The 341 Receiver is line powered from 120 VAC, and the 342 Transmitter is powered from (4) AA size
primary Alkaline cells. Expected life of the Alkaline cells in continuous use is roughly 16 Hrs.
There are two simulators used for exercising the transmitter. One is a production simulator (Model 325)
and the other is a radiation hardened simulator (built into a metal box). The 325 simulator will be used for
SAR testing and the radiation hardened will be used for other testing.
Other accessories are provided for their use in testing, if necessary.
Descriptions: (refer also to 340 Service manual, pages 3-2,3,4)
341 Receiver:
Front Panel:
AC power switch far right
Toco/Iup mode change switch left
Indicator lamps center right
Signal strength indicator, green top
Battery status, red center
AC mains, green bottom
Rear Panel:
Power Entry Module far left top
Mark interconnect cable Jack far left bottom
System Interconnect cable jack left bottom
Ultrasound interconnect cable jack bottom center
ECG interconnect cable jack bottom right
UA interconnect cable jack bottom far right
Equipotential ground jack top center