Welch Allyn 246 Propaq CS Vital Signs Monitor v.3.7X - User Manual - Manual (Page 101)

Directions for Use Reference 97
Real-Time ECG analog/defib sync specifications
Special cables are required to interface the defib sync connector to a Physio-Control
LIFEPAK 5 or LIFEPAK 6s defibrillator. The sync and real-time ECG outputs do not operate
during in-service mode.
Impedance pneumography (RESP) specifications
Signal Specification
Sync Output 0 to 5 V pulse, 100 ±5 ms wide, starts within 35 ms after peak of R-wave. 15 mA short
circuit current.
Real-time ECG Output Range = ±6 V minimum, centered about 0 V, Gain = 1000X, noninverting for lead II,
inverting for all other leads, delay <3 ms, 0.05-100 Hz, going to -5.9 V ±5% during ECG
lead fail. V lead has no Real-Time analog output.
Marker Input (Defib Sync only) Normally 0 V in, a pulse either ±3 to ±15 V for 10-70 ms puts a marker in ECG trace. ~
5 k
Ω input resistance.
Shield Common terminal for other signals
Characteristic Specification
Sweep speed 3.13, 6.25, 12.5 mm/s; user-selectable
Amplitude range 1x, 2x, 4x, 8x, 16x
Excitation signal characteristics 65 µA RMS ±5% at 63.0 kHz pseudo sine wave
Sensing electrodes User selectable RA-LA or RA-LL
Base impedance (in addition to 1k¾
resistors in ECG cables) 100 to 1200 ohms is normal monitoring range, approx. 1200-1500 ohms range
produces a “NOISY SIGNAL, CHECK ELECTRODES” equipment alert. Above
approx. 1500 ohms produces a “RESP FAULT, LEAD FAIL” equipment alert.
Thresholds are dependent on ECG cable type.
Impedance dynamic range 20 ohms
Signal bandwidth after detection 0.06 Hz (single pole) to 3.2 Hz (2 pole)
Breath detection threshold 140 milliohms or 2x CVA, whichever is greater
Respiration rate range Adult/Ped: 0 (apnea), 2 to 150 breaths/min
Neonate: 0 (apnea), 3 to 150 breaths/min
Respiration rate accuracy ±2 breaths/min or ±2%, whichever is greater
Respiration rate source (RR) When CO
2
is active, CO
2
is the BR source. Otherwise, RESP from ECG is the RR
source.
Apnea alarm delay accuracy +1 second
Resolution 5 seconds
Apnea alarm delay settings Central apnea only - alarm delay is set by the user
Adult/Ped = 6, 10, 15, 20, 25, 30 seconds
Neonate = 6, 10, 15, 20 seconds
Cardiovascular artifact rejection
(CVA) Presence of CVA is detected automatically. Breaths will be picked in the
presence of CVA unless the Breath Rate is within 5% of the Heart Rate or a sub-
multiple of the heart rate.
Motion artifact rejection not rejected
Obstructive apnea not detected