Connecting Other Strip-Chart Recorders - Nellcor N-200 Operator's Manual

CONNECTING OTHER STRIP-CHART RECORDERS

A general-purpose strip-chart recorder may be connected to the
N-200 to provide a permanent record of oxygen saturation,
pulse rate, pulse waveform, ECG data, and/or data in the trend
and event memories.
The N-200 analog output connectors are standard 3/32-in.
subminiature phone plugs. The output voltage range required
by the recorder (0–1 V or 0–10 V) is set with the N-200
VOLTAGE switch. The oxygen saturation output can be set for
a 0–100% display or an expanded 50–100% display using the
N-200 SpO
0–10 V, with a range of 0–255 bpm and a resolution of 3.9 or
39mV per beat.
To print oxygen saturation and pulse rate, use the SAT and
RATE connectors. Use the ZERO and FULL buttons to
generate zero and full-scale voltage signals in order to adjust
the recorder controls.
To print the pulse (plethysmographic) waveform, use the
PULSE connector; to print the ECG waveform, use the ECG
IN/OUT connector. Use the ZERO and FULL buttons to
generate zero and full-scale voltage signals at the PULSE
connector in order to adjust the recorder controls.
To print trend data on a strip-chart recorder, use the SAT and
RATE connectors; to print event data, use the SAT, RATE, and
PULSE connectors.
Note: Connect only a high impedance device (1 megohm or
higher) to the analog output connectors. Improper
loading distorts the correspondence between the
measured voltage and the intended output voltage.
% SCALE switch. The pulse rate output is 0–1 V or
2
Connecting to Other Instruments
67