Operator`s manual

Memory Functions

Each time the Model 920M PLUS is turned on (except during Setup

mode), data are automatically collected in memory. The device can collect

and store up to 72 hours of SpO

and pulse rate information.

NOTE: Only recording sessions longer than 1 minute are stored in

memory. Memory will clear approximately 30 seconds after removing the

batteries. Replace batteries immediately to avoid losing stored data.

Data management software is available for use with Microsoft Windows

95/98/2000/NT 4.0/XP operating systems. Refer to “Accessories.”

The memory in the device functions as an “endless loop.” When the

memory fills up, the unit begins overwriting the oldest data with the

newest.

Each time the device is turned on, the current time/date information (if the

clock is set correctly) is stored in memory to allow quick differentiation of

recording sessions. Patient SpO

and pulse rate are sampled and stored

every 4 seconds.

Oxygen saturation values are stored in 1% increments in the range of 0 to

100%.

The stored pulse rate ranges from 18 to 300 pulses per minute. The

stored values are in increments of 1 pulse per minute in the interval from

18 to 200 pulses per minute, and increments of 2 pulses per minute in the

interval from 201 to 300 pulses per minute.

The last data recorded will be the first data printed. For example, the last

4 minutes of data recorded would be the first 4 minutes of printout.