13 fum, 14 gas, 15 hvc – INFICON VGC403 Three-Channel Measurement and Control Unit User Manual
Page 38: 16 itr, 17 loc, E chapter 6.3.14 gas, 38
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tinb07e1-e 2011-07 Vacuum Gauge Controller
6.3.13 FUM
Select the filament. See Chapter 5.2.11 Filament selec-
tion (FiL), 26.
S: FUM[,a,b,c]<CR>[<LF>]
R: <ACK><CR><LF>
S: <ENQ>
R: a,b,c<CR><LF>
6.3.14 GAS
Gas type correction. See Chapter 5.2.2 Gas type (GAS),
S: GAS[,a,b,c]<CR>[<LF>]
R: <ACK><CR><LF>
S: <ENQ>
R: a,b,c<CR><LF>
NOTE:
When «Other gas» is selected, the gas type depen-
dence of the measurements will be corrected by a
variable correction factor. See Chapter 6.3.5 COR,
6.3.15 HVC
High vacuum circuit on/off. Switch the high vacuum circuit
of sensors on/off. See Chapter 4.4.3 Control button func-
tions, 17.
S: HVC[,a,b,c]<CR>[<LF>]
R: <ACK><CR><LF>
S: <ENQ>
R: a,b,c<CR><LF>
NOTE:
In order to switch a sensor on/off, the sensor control
must be set to «Hand». See Chapter 6.3.26 SC1, 41.
6.3.16 ITR
Read a data string from the BPG/BCG/HPG/CDGxxxD
sensor.
The measurements of the BPG/BCG/HPG/CDGxxxD are
transferred digitally. A data string consists of 8 bytes
(hexadecimal numbers) which are separated from each
other by a comma. See Reference [11]. The data strings
of the sensors are separated from each other by double
space characters.
S: ITR<CR>[<LF>]
R: <ACK><CR><LF>
S: <ENQ>
R: aa,aa,aa,aa,aa,aa,aa,aa bb,bb,bb,bb,bb,bb,
bb,bb cc,cc,cc,cc,cc,cc,cc<CR><LF>
6.3.17 LOC
Parameter setup lock. See Chapter 5.4.5 Parameter
setup lock (LoC), 30.
Parameter
Significance
a
Filament for channel 1
0 = Automatic (default)
1 = Filament 1
2 = Filament 2
b
Filament for channel 2
(see above)
c
Filament for channel 3
(see above)
Parameter
Significance
a
Gas type for channel 1
0 = Nitrogen/air (default)
1 = Argon
2 = Hydrogen
3 = Other gas
b
Gas type for channel 2
(see above)
c
Gas type for channel 3
(see above)
Parameter
Significance
a
Sensor 1
0 = Off
1 = On
b
Sensor 2
(see above)
b
Sensor 3
(see above)
Parameter
Significance
aa,aa,aa,aa,aa,aa,aa,aa
Data string of sensor 1
bb,bb,bb,bb,bb,bb,bb,bb
Data string of sensor 2
cc,cc,cc,cc,cc,cc,cc,cc
Data string of sensor 3