Teledyne 2002 instruction manual Front Panel Operation, Overall Functional Description, Section

SECTION 3

Front Panel Operation

3.1Overall 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 switch 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 below 1x10-4Torr is indicated by 0.0 x10+. In the case of an unconnected or faulty sensor(s), it is possible to see “ .“, “. “ or “ .“. See trouble shooting section (section 8) for more detail.

UP SWITCH

HASTINGS INSTRUMENTS

DUAL SENSOR VACUUM GAUGE

MODEL 2002

mbar Torr Pa

Model 2002

Control Unit

Front Panel

DOWN

SWITCH

MODE SWITCH ZERO SWITCH

Figure 3.1

Model 2002 page 9