Datex-Ohmeda Aestiva 7900 SmartVent Technical Reference Manual page 69

A/D Channel
Counts
2 1800-2300
Inspiratory Flow
1800-2300
2
Expiratory Flow
2 550-1050
Airway Pressure
2 550-1050
Manifold Pressure
O2 0-4095
Flow Current Sense 0-4095
Flow DAC Feedback 0-4095
Battery Voltage 1740-3976
Battery Current 700-4000
1.225 Voltage 1214-1235
Reference
5.8V Voltage Test 1997-2565
+15V Analog Supply 1914-2262
-15V Analog Supply 858-953
+12V SIB Supply 1779-2322
VEL Supply 1645-2675
VSW Supply 1269-2368 9.13 to 17.04 Volts
+12V Light Supply 1879-2217
3 2371-3884
GIV Current Sense
Notes:
1. These columns show the acceptable range where possible.
2. The A/D count and displayed value shown for Airway Pressure, Manifold Pressure, Inspiratory Flow, and Expiratory Flow are the zero
pressure values. These readings should be taken with the flow sensors disconnected by removing the circuit module.
3. The count range and displayed value shown for GIV Current Sense is with the GIV turned on. If the GIV is turned off, the off count range
is 0 to 259 Counts.
1006-0453-000 05/04
Table 4a-1 A/D Channels
1 1
Actual Range
Near Zero L/min
Near Zero L/min
cm H O
Near Zero
2
cm H O
Near Zero
2
0 to 100%
0 to 1.024 Amp
0 to 4.095 Volts
7 to 16 Volts
-600 mA to 6 Amps
1.214 to 1.235 Volts
4.86 to 6.24 Volts
13.77 to 16.27 Volts
-12.62 to -17.46 Volts -61 to 1.43 Volts
10.44 to 13.62 Volts
9.56 to 15.69 Volts
11.02 to 13 Volts
143.7 to 235.4 mA
4a Tests and Calibration 4.X Software
Displayed Range Special Instructions
-120 to 120 L/min Zero Offset Reading (nominal 2050
Counts)
-120 to 120 L/min Zero Offset Reading (nominal 2050
Counts)
cm H O Zero Offset Reading (nominal 800 Counts)
-20 to 120
2
cm H O Zero Offset Reading (nominal 800 Counts)
-20 to 120
2
0 to 100% Count weight and limits are determined
during O2 calibration
0 to 1.024 Amps
0 to 4.095 Volts
0 to 16.48 Volts <7V = Low battery voltage failure.
<11.65V = Low battery voltage warning.
>16 Volts (10 Sec) = High battery voltage
failure.
-2 to 6.19 Amps -150 to -600 mA = Battery charging.
-601 mA to -2 Amps = Charge current out of
range.
>300 mA = Operating on battery.
>6 Amps = Battery discharge current out of
range.
0 to 4.095 Volts
0 to 9.96 Volts
0 to 29.46 Volts
0 to 24 Volts
0 to 24 Volts
0 to 29.46 Volts
0 to 24 Volts In Rev 3.4 software,
Range = 10.00 to 12.73 Volts
0 to 248.2 mA Off state reading is 0 to 259 counts
4a-23