Ocean Optics NeoFox, Installation And Operation Manual

Page: 60 / 68

C: Analog Output
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NeoFox Viewer Parameter Potential Values
5
– Alternate O
2
Units
Current Output Source 0
– Disable analog output
1
– Oxygen
2
– Temperature (not supported)
3
– Pressure (not supported)
4
– Tau
5
– Alternate O
2
Units
Analog Voltage Lower Bound (or Voltage
Limit Minimum) <floating point value> - This floating point value represents
the “lower bound” of the represented range of the input
data. Must be < UBOUND and
≥ 0.
Analog Voltage Upper Bound (or Voltage
Limit Maximum) <floating point value> - This floating point value represents
the “upper bound” of the represented range of the input
data. Must be > LBOUND.
Analog Current Lower Bound (or Current
Limit Minimum) <floating point value> - This floating point value represents
the “lower bound” of the represented range of the input
data. Must be < UBOUND and
≥ 0.
Analog Current Upper Bound (or Current
Limit Maximum) <floating point value> - This floating point value represents
the “upper bound” of the represented range of the input
data. Must be > L
Analog Output Specifications
Name Min Typ Max Conditions
4-20 mA Loop Voltage 11 V -- 24V R
Loop
= 2 Ω
4-20 mA Output Accuracy --
< 160 μA
-- 25°C, V
Loop
= 12V, R
Loop
= 2 Ω
0-5V Output Accuracy -- < 50mV -- 25°C
0-5V Output Resistance -- --
250 Ω
--
Interfacing to the 4-20mA Output
The NeoFox includes a non-isolated 4-20 mA current sink that can be used to transmit oxygen,
temperature, or tau data. It is extremely important that you set up the interface for this output correctly, or
else irreparable damage to the NeoFox unit can occur.