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APPENDIX C
Register Configuration P1 — Next Calibration Configuration
15
14
13
12
MA
IE
DH
MG
Manual or Auto (MA)
0 = Manual
1 = Auto
Data Hold (DH)
0 = off
1 = on
Register Configuration P2 — Next Calibration Configuration — Intervals between cal
15
14
13
12
IH
IH
IH
Hour of Day (IH)
0 to 23
Register Configuration Q — Various Parameters, High Byte and Low Byte
15
14
13
12
MS
MS
MS
MS
MFC Span in ml/m (MS)
0 to 2000 ml/m
Register Configuration T — Instrument Setup and Command Register (Register 198)
Writing relevant number to this register initiates associated setting, calibration or test function
* Means only for Michell Factory use
** Put is setup mode first and then after test put back into measurement mode
2 = Set Cell Pressure 4 mA ADC Value*
3 = Set Cell Pressure 20 mA ADC Value*
4 = Set Ext Pressure 4 mA ADC Value*
5 = Set Ext Pressure 20 mA ADC Value*
80
11
10
9
8
11
10
9
8
IH
IH
ID
ID
11
10
9
8
MS
MS
MS
MS
QMA401 User's Manual
7
6
5
4
AC
AC
AC
AC
Internal or External (IE)
0 = Internal
1 = External
Data Hold Additional Cycles (AC)
0 to 240 cycles
7
6
5
4
ID
ID
ID
ID
Interval Days (ID)
1 day to 365 days
7
6
5
4
MS
MS
MS
GN
Gas Number (GN)
0 to 23 Gases (see Appendix D.1 for details).
97450 Issue 2, March 2018
3
2
1
0
AC
AC
AC
AC
3
2
1
0
ID
ID
ID
ID
3
2
1
0
GN
GN
GN
GN
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