Fukuda Denshi LX-7230, Operation Manual

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9. Other Setting Items
The following settings are available for the LX-7230 depending on the use and
condition of the patient. For details of the settings, contact our service
representative.
Items Selection Default Backup
Time Constant 0.4 sec., 0.1 sec. 0.4 sec. Yes
Detection Sensitivity of
Pacemaker Pulse
Low, Mid, High Mid Yes
Respiration Detection
Signal
ON, OFF ON Yes
LCD Contrast 8 steps 8 Yes
Transmitter Channel
One from the
following channels.
0801 to 0879
0900 to 0979
1000 to 1079
1100 to 1179
1200 to 1279
1300 to 1379
1100 Yes
Group ID One from 00 to 63 00 Yes
■
Changing the Time Constant
The default setting of the time constant is “0.4 seconds”.
If a stable monitoring is difficult with excessive change in the baseline due to
excessive body motion of the patient or an interference noise, such as AC
frequency, by changing the time constant to “0.1 second” the monitoring may
become relatively stable.
For details of the setting change, contact your local Fukuda Denshi service
representative.
CAUTION
 When changing the time constant to “0.1 seconds”, the lower frequency
characteristic becomes 1.6Hz ±25%. This setup does not meet IEC
60601-2-27 standard. It may lead to a change in the ECG waveform and
ST measurement value may be especially affected. Fukuda Denshi
recommends “0.4 seconds” setting in normal use.
 The LCD screen in normal use does not indicate the selection of time
constant. Make sure to take measures, such as marking on the LX-
7230, to distinguish whether the selection of time constant is changed.