Teledyne HASTINGS 2002, Instruction Manual, Page: 9 / 49

page 9
Front Panel Operation
SECTION 3
3.1 Overall Functional Description
The front panel of the control unit is shown in Figure 3.1. The four circular blue buttons are used
for the selection of display readout and the input of data. The green data field displays the data as
determined by mode selection. The MODE button toggles the control unit in a clockwise fashion
among the six modes of operation:
RUN Normal operation, pressure is displayed in scientific notation. The analog to digital
converter speed can be adjusted and the factory calibration can also be restored in this
mode. See Section 3.2 for further information.
HIGH High set point is displayed in scientific notation, above this pressure the HIGH TTL
output will be +5V.
LOW Low set point is displayed in scientific notation, below this pressure the LOW TTL
output will be +5V.
CAL . Pressure is displayed and can be adjusted.
GAS Gas number is displayed and selection may be changed.
UNITS Units used to display pressure are selected.
In the RUN, HIGH, and LOW modes, it is possible to see the display indicate that the data is out
of range. Overrange is indicated by . x10
-
. Underrange is indicated by 0.0 x10
-
. A mea-
sured pressure between 0 and 1x10
-4
Torr is indicated by 0.0 x10
+
.
Model 2002 Control Unit Front Panel
Figure 3.1
UP ARROW
DOWN
ARROW
MODE BUTTON ZERO BUTTON
mbar
Torr
Pa
HASTINGS INSTRUMENTS
DUAL SENSOR VACUUM GAUGE
MODEL 2002