Philips Avalon CTS M2720A, Service Manual

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7 Troubleshooting Testing Transducers
72
• Only for Norway:
The default frequency channels are the ten country-specific frequency channels approved for use by the
local authorities. By choosing Norway from the drop-down country menu, the Service Support Tool
automatically determines the relevant frequency ranges to allocate and exclude.
• If you cannot use these default frequency channels, you need to apply for specific fixed frequencies
within the full ISM band frequency range from the local authorities. Once the frequencies are
approved, you need to set the base station to the full ISM band frequency range, and then to manually
set the specific approved fixed frequencies to the transducers within the ISM band.
Refer to the Service Support Tool Help for details.
N O T E
You can only set the country once. If you need to reset the country code, you need an access code. Please
contact Philips Support.
Ensure that the frequency channels you set comply with any local regulations, and that these channels do
not cause interference or conflict with any other telemetry devices.
Testing Transducers
This section shows you how to carry out an electrical check on the transducers. Details of the visual
inspection are given in Chapter 6.
Ultrasound Transducer Electrical Check
CAUTION
Use of ultrasound gel that is not approved by Philips may reduce signal quality and may damage the
transducer. This type of damage is not covered by warranty.
1
Register the transducer to the base station following the red color coding, so that it displays a bed label
and has an active RF link (see the
Instructions for Use for details).
2
Turn the fetal monitor’s loudspeaker volume up to an audible level.