Chapter Three: Overview
The Front Panel
39
Chapter Three: Overview
The Front Panel
A
B
C
D
1
2
3
4
ALARMS
CHANNELS
ALARM
CHANNEL
TUNING
COMMON
POINT
1
2
3
4
5
6
7
8
9
2
0
3
4
A
B
C
DUAL
+/-
EXP
ZERO
DEGAS
ON
LEAD
OFF
GAIN
QUIET
ENTER
DISPLAY
MODE
CONTROL
MODE
D
CANCEL
SPAN
1
POWER
ON
OFF
VACUUM GAUGE MEASUREMENT AND CONTROL SYSTEM
TYPE 146
SET
0
1
Figure 11: Front Panel of the Type 146 Instrument
The front panel includes the power switch, the alarm and channel label areas, the keys, and the
front panel window. All modes can be accessed through the front panel and from the RS-232
serial port. All commands can be activated through the front panel (and most can be activated
through the RS-232 serial port).
The keys on the front panel are color coded to group them according to their functions.
The Power Switch
The Power switch controls the electrical power to the 146 unit. The 146 unit uses the universal
symbols for power on (1) and power off (0).
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