Nonin 7500 - Analog Output and Calibration

24
Memory and Data Output Features
Analog Output
The Model 7500 provides analog output signals for SpO
2
, pulse rate, and
event markers. Each output level conforms to the specifications shown
below:
Analog Output Calibration
Analog calibration signals that allow external device calibration are
provided after initial power up, and continue until the Model 7500 begins
tracking SpO
2
and pulse rate readings. The calibration routine ends when
the system begins tracking signals. The calibration signal sequence is as
follows:
Output Specification
SpO
2
Output Analog Range 0 - 1.0 VDC (representing 0-100%)
1.27 VDC (out of track)
Pulse Rate Output Analog Range 0 - 1.0 VDC (representing 0-300 BPM)
1.27 VDC (out of track)
Event Marker 0 VDC or 1.0 VDC nominal (representing
an event).
Event marker high for SpO
2
less than low
alarm limit.
Analog Output Load Current 2 mA maximum
%SpO
2
Analog Output Accuracy
±2%
Pulse Rate Analog Output Accuracy ±5%
Time Interval Analog Signal
30 seconds 1.0 VDC
30 seconds 0.0 VDC
1 second 0.1 VDC
1 second 0.2 VDC
1 second 0.3 VDC
1 second 0.4 VDC
1 second 0.5 VDC
1 second 0.6 VDC
1 second 0.7 VDC
1 second 0.8 VDC
1 second 0.9 VDC
1 second 1.0 VDC
1 second 1.27 VDC
Repeat