Pulse Rate; Pi R Pulsatile Value; Sensor Emitter Wavelength Ranges; Environmental - GE TruTrak+ 3900 User Manual

Pulse rate

Range: 30 to 250 bpm
Accuracy assuming a constant pulse rate: ± 2% or ± 2 bpm (whichever is greater)
Accuracy during conditions of clinical patient motion: unspecified
Resolution: 1 bpm
PI pulsatile value
r
Range: 0.00 to 9.99
Averaging interval: 12 seconds
Resolution: 0.01

Sensor emitter wavelength ranges

Red LED peak wavelength range: 650 to 670 nm
Infrared (IR) LED peak wavelength range: 930 to 950 nm
Average power: ≤ 1 mW

Environmental

Parameter
Temperature
Relative humidity,
noncondensing
Pressure
Approximate elevation

Electrical

Battery

Type: pack of 8-volt, sealed lead-acid
Capacity: 3.2 ampere hours
Operation time for a new battery at normal operating temperatures:
3900/3900P: at least 5 1/2 hours (with all functions operative from a fully
charged battery)
3900P: approximately 4 hours when printing
Low battery indicator (LOW BATTERY): when the battery has between 5 and 15
minutes remaining capacity
Charge time:
4 hours = 80% capacity
8 hours = 100% capacity
Life: several hundred charge/discharge cycles
7/Compliance and Specifications
Operating
0 to 50 ºC
(32 to 122 ºF)
20% to 95%
1060 to 697 hPa
–378 to 3048 m
(–1240 to 10,000 ft.)
Transport and Storage
–40 to 70 ºC (–40 to 158 ºF)
Units with printer paper:
–20 to 45 °C (4 to 113 °F)
5% to 95%
1060 to 188 hPa
–378 to 12.2 km
(–1240 to 40,000 ft.)
7-5