C-Link Protocol Commands
Measurements
Thermo Fisher Scientific
Model 48
i
Instruction Manual
B-13
Send:
pres
Receive:
pres 753.4 mmHg
ratio
high ratio
low ratio
The “ratio” command reports the sample/reference ratio in single mode.
The “high ratio” commands reports the sample/reference ratio using high
averaging time and the “low ratio” command using low averaging time,
when operating in dual or auto mode. The following example shows that
the current ratio is 1.161100.
Send:
ratio
Receive: ratio
1.161100
flags
This reports 8 hexadecimal digits (or flags) that represent the status of the
AGC circuit, pressure and temperature compensation status, gas units, gas
mode, and alarms. To decode the flags, each hexadecimal digit is converted
to binary as shown in the
Figure B–1
. It is the binary digits that define the
status of each parameter. In the following example, the instrument is
reporting that the AGC circuit is on, that the instrument is in the span gas
mode, and that the CO high concentration alarm is activated.
Send:
flags
Receive: flags
80068000
Figure B–1.
Flags Field
