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1-14
1.3
KEYBOARD PANEL
1.3.1
General
The focal point for control facilities of the 580 is the keyboard panel (Figure
1.11), located to the left of the MDFG drawers.
The following paragraphs de-
scribe the function and ,use of the various controls and components.
1.3.2
ADDRESS Switch
The ADDRESS switch consists of three vertical rows of pushbutton switches
(Figure 1.11).
The first row, consisting of seven pushbuttons, is used to
select the type of unit to be read out, i.e., A equals Amplifier, P equals
Potentiometer.
Table 1.1 identifies and describes the function of each switch
in this row.
The second and third rows contain the tens and units switches
respectively.
Note that if the position selected is less than 10, the
°
push-
button in the 10 column must be depressed.
For example, if amplifier 4 in
field 0 is to be read out, it has to be addressed as A04.
1.3.3
Servo Set Potentiometer Controls (Including RDAC Switches, CL/SET
Switches, and the POT CONTROL)
The RDAC switches consist of 4 columns of 10 pushbutton switches with each
column labeled 0 through 9.
The purpose of these switches is to provide a
precise voltage for automatic setting of the Servo set potentiometers.
The CL/SET pushbuttons are used to clear or to
~
an addressed pot once the
RDAC pushbuttons have been activated.
The POT CONTROL lever allows adjustment of an addressed pot in any computer mode.
As an example of the operation of the controls described above, assume that a
particular pot is to be set to 8 volts.
Place the computer in the
~
E2l
mode.
Select the pot to be set using the selector system described in Paragraph 1.3.1.
Set the RDAC to 8 volts by depressing the 8 pushbutton in the first column and
the 0 pushbutton in the second, third and fourth columns.
Once the RDAC has
been set, depress the SET button and the addressed pot will slew to the proper
voltage.
If it is necessary to change the value of a pot during problem solution,
address the pot and change the value up or down using the POT CONTROL lever.
1.3.4
ANALOG MODE Controls
The ANALOG MODE controls are, divided in two types of modes; the computer oper-
ating modes and the computer set-up modes.
Tables 1.2 and 1.3 indicate the
pushbuttons associated with these modes and describes their functions.
1.3,5
PATCH PANEL DIS/ENG Switches
The PATCH PANEL DIS/ENG switches provide control of the patch panel drive system
when inserting or removing the pre-patch panel (see Paragraph 1.2.3).
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