3 Basic Operation
During monitoring, if the fetal heart rate signal quality fluctuates, and becomes poor, it does not
necessarily mean that the transducer needs repositioning. The fluctuation may be caused by fetal
movement. Allow time for the signal to stabilize before deciding whether to reposition the transducer
(ultrasound), or apply a new electrode (ECG). For the best trace quality, the signal quality indicator
should be full, indicating good signal quality, even though it may be possible to make traces at a lower
signal quality level.
Basics of Cableless Systems
Assigning Cableless Transducers
The cableless transducers of the Avalon CL are assigned by simply docking them at the base station
connected to the patient's fetal monitor. See the Avalon CTS Instructions for Use for the assignment
of the CTS transducers.
Activating Cableless Transducers
The CL transducers of the Avalon CL are activated by picking them up from the base station. If the
CL transducer is activated, an antenna symbol is displayed on the fetal monitor screen next to the
numeric of the measurement. See the Avalon CTS Instructions for Use for the activation of the CTS