25
Memory Functions
Memory Functions
Data Collection
Each time the Model 2500A VET 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
2
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.
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. SpO
2
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 2500A VET memory stores pulse rates from 18 to 450 beats per minute. The stored values are
in increments of 1 pulse per minute.
During the printing of the data, the last data recorded are the first data printed. For example, the last
4 minutes of data recorded would be the first 4 minutes of printout.
Memory Playback
NOTE:
Playing back the data in memory does not clear the data from memory.
1. Connect the 2500A VET to a computer with the Memory Cable (1000MC), Real-Time Cable
(1000RTC), or USB Interface Adapter (1000USB/1000USB-C).
2. Enter Setup mode (see “Entering Setup Mode”).
3. When
rCL no
appears in the SpO
2
and pulse rate displays do not press any buttons.
4. After 8 seconds, data automatically plays back from the memory at a rate of 20 minutes of
data per second. A 72-hour recording session (the maximum memory saved) is played back in
approximately 3.5 minutes.
5. After all data are played back, the device should be shut off before collecting new animal data.
Animal information is held in memory as long as the batteries are sufficiently charged. If the memory
must be cleared, see “Clearing the Memory.”
