937B Controller Instruction Manual
pg. 71
9.3 Pressure Reading Commands
Command Function
Response
Meaning
Single Channels
PRn
(n=1 to 6)
Read pressure
on Channel n
d.d0E
ee
(d,e=0 to 9)
Pressure in selected units for PR, CP, CC & HC
d.dddE
e
(d,e =0 to 9)
Pressure in selected units for CM
-d.ddE
e
(d,e=0 to 9)
CM, when CM output is negative.
LO<E-e
Sensor
e(Torr/mbar)
e(Pascal)
e(micron)
PR
4
2
1
CP
3
1
0
CC
11
9
8
HC
10
8
7
ATM
PR when p>450 Torr
OFF
Cold cathode HV is OFF, or HC/PR/CP power is
OFF.
RP_OFF
HC and CC power is turned OFF from rear panel
control
WAIT
CC or HC startup delay
LowEmis
HC OFF due to low emission
CTRL_OFF
CC or HC is OFF in controlled state
PROT_OFF
CC or HC is OFF in protected state
MISCONN
Sensor improperly connected, or broken filament
(PR, CP only)
NO_GAUGE
Controller unable to determine sensor connection.
PRZ
Read
pressures on
all channel
6 of above,
separated by
spaces
Same as above
Combination Channels
PCn
(n=1 or 2)
Read pressure
on channel n
and its
combination
sensor
d.d0E
ee
(d,e=0 to 9)
Combined pressure in selected units
NAK181
Combination disabled
Table 9-3 937B Pressure Reading Commands