7 Troubleshooting
Excluding Frequencies
70
Refer to the
Service Support Tool Help
for details.
Excluding Frequencies
Having established the occupied frequency ranges by scanning the available frequency range (see above),
you can exclude up to four frequency ranges by using a PC installed with the Service Support Tool.
Refer to the
Service Support Tool Help
for details.
Base Station with Fixed Frequency
There are instances when free channel selection is not desired, and the setting of fixed frequency for the
base station is preferable or necessary. For multiple cordless/telemetry installations in the same hospital,
especially when connected to an antenna system, the hospital should implement an RF plan. Each system
(adult telemetry, fetal telemetry, Avalon cordless), should have a fixed frequency reserved for it, and this
should be documented in a suitable way (for example, on an RF chart).
The setting of fixed frequencies is done using the Service Support Tool. Refer to the
Service Support Tool
Help
for details.
The frequency of a slot is separated from that of another slot from the same base station by channel
spacing. The base station is shipped with a default channel spacing appropriate for the country in
question, and normally this requires no adjustment.
If it there are transducers working close to each other from the same base station and the transducers are
interfering with each other (exhibited, for example, by a noise on the ultrasound channel), you can make
the channel spacing wider (
only
after consulting Philips Support). You can do this by changing the F-
settings using the Service Support Tool (refer to the
Service Support Tool Help
), or manually using the
configuration keys on the base station (refer to page 66).
The first slot allocates the base fixed frequency to its transducer. The frequency allocated by the second
slot to its transducer is the base frequency plus the channel spacing (whether default or user-selected). The
frequency allocated by the third slot is the frequency of the second slot plus the channel spacing.
Due to this way of allocating the frequencies to the second and third slots, avoid setting the base fixed
frequency for the first transducer slot at the very end of the available frequency range for your country,
otherwise it will not be possible to allocate a frequency channel to slots 2 and 3.
Slot 1
Frequency ‘X’
(base frequency)
Slot 2
‘X’ + Channel Spacing
Slot 3
‘X’ + 2 x (Channel Spacing)
To Purchase, Visit
Summary of Contents for Avalon CTS M2720A
Page 2: ...ii ...
Page 32: ...3 System Interfaces Compatible Fetal Monitors 26 ...
Page 66: ...6 Preventive Maintenance and Safety Battery Exchange 60 ...
Page 92: ...9 Upgrades 86 ...
Page 102: ...10 Specifications Essential Performance 96 ...
Page 104: ...A Removing and Replacing the Transducer Battery 98 Wipe off excess silicone grease ...
Page 108: ...C Avalon CTS Frequency Table 102 ...
