Agilent Technologies TwisTorr 305 FS User Manual page 188

Technical Information
The maximum power provided by controller to drive a gauge is 5W, if your gauge
NOTE
requires more power you need an external power supply.
The controller recognizes automatically the gauge connected by reading the signal
"identification" in the connector.
Following a table with the gauge supported:
Table 11
Gauge model
FRG 700/702
IMG 500
PVG 500/502
CDG 500 T1000
CDG 500 T0100
CDG 500 T0010
CDG 500 T0001
The controller gives the error "gauge error" if the gauge connected is not supported.
There are some gauges (for example the CDG family gauge) that have the same
identification. In this case the controller recognizes the family of the gauge but the
user should select the right gauge by front panel.
The pressure can be read by display, by serial line (win. 224) and by Remote I/O
(Programmable Analog Out), but the controller doesn't replicate the signal from the
gauge.
If the Programmable Analog Output is related to the pressure read by an external
gauge, the controller doesn't replicate exactly the signal coming from the gauge; the
controller converts the gauge signal in the range from 0 to 10V.
The conversion formula is the following:
188
Name showed in the display
FRGa
IMG
PVGa
CDG3
CDG2
CDG1
CDG0
−
V V
g g
=
V
out
−
V V
g _ max
Agilent TwisTorr 305 FS Remote Controller User Manual
_ min
×
10
g _ min