MKS 146C - Overview of Keys and Their Functions; What Happens When a Key Is Pressed; Table 5: Key Color Codes

Overview of Keys and Their Functions Cha
p
ter Three: Overview
40
Overview of Keys and Their Functions
This overview explains the way keys function in general. Any exceptions to the general rules are
noted within each appropriate chapter.
What Happens when a Key is Pressed
With each valid key press, a soft beep is sounded. An invalid key press does not evoke any
sound, but causes the
INVALID
legend to temporarily appear on the far right side of the front
panel window. An inappropriate key sequence, such as trying to zero a channel that has been
turned off, evokes a single loud beep. An incomplete key sequence times out after 3 seconds,
and evokes two loud beeps.
Key Color Code
s
Red Keys Relates to Alarms
[7/
A
], [8/
B
], [9/
C
], and [0/
D
] Used to select one of the four alarms (A through D).
[
QUIET
/
CANCEL
] Silences any alarm as its first function.
Yellow Keys Relates to Channels
[1
1
], [2
2
], [3
3
], [4
4
], and
[5
DUAL
]
Used to select one of the four channels (1 through 4)
or the dual channel display function.
[
ZERO
/
EXP
] & [
SPAN
/.] Used to zero, or span channels.
[
DEGAS
/
SET POINT
] Used to degas hot cathode gauges.
[
ON
/
LEAD
] & [
OFF
/
GAIN
] Used to turn channels and sensors on or off.
Green Keys Used in Tuning Mode
[
DEGAS
/
SET POINT
] Used to select control parameter Set Point.
[
ON
/
LEAD
] Used to select control parameter Lead
[
OFF
/
GAIN
] Used to select control parameter Gain
Blue Keys Common to all modes
[1
1
], [2
2
], [3
3
], [4
4
],
[5
DUAL
], [6], [7
A
], [8
B
],
[9
C
], [0
D
], , ,
[
ENTER
], [+/-,],
[
QUIET
/
CANCEL
],
[
ZERO
/
EXP
],
[
DISPLAY MODE
],
[
CONTROL MODE
]
For mode/ function selection, and parameter entry.
Table 5: Key Color Codes
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