MRC O2H-9903SD, Operation Manual

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The 16 digits data stream will be displayed in the
following format :
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Each digit indicates the following status :
D15 Start Word
D14 4
D13
When send the %RH data ( probe 1 ) = 1
When send the Temp./%RH. data ( probe 1 ) = 2
When send the Dew point data ( probe 1 ) = 3
When send the Wet bulb data ( probe 1 ) = 4
When send the CO2 data ( probe 2 ) = 5
When send the Temp./CO2 data ( probe 2 ) = 6
When send the O2 data ( probe 3 ) = 7
When send the Temp./O2 data ( probe 3 ) = 8
When send the CO data ( probe 3 ) = 7
When send the Temp./CO data ( probe 3 ) = 8
D12, D11 Annunciator for Display
= 01
℃
PPM = 19 % RH = 04
= 02
℉
%O2 = 06
D10 Polarity
0 = Positive 1 = Negative
D9 Decimal Point(DP), position from right to the
left
0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP
D8 to D1 Display reading, D1 = LSD, D8 = MSD
For example :
If the display reading is 1234, then D8 to
D1 is : 00001234
D0 End Word
RS232 FORMAT : 9600, N, 8, 1
Baud rate 9600
Parity No parity
Data bit no. 8 Data bits
Stop bit 1 Stop bit
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