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AM700 Audio Measurement Set Service Manual
6–27
Using a Keyboard to Run Diagnostics
The AM700 supports the use of AT-type keyboard as an input device for making
any inputs normally accepted from the front panel keypad. For diagnostics, the
keyboard is used together with exporting the diagnostic output messages to an
external terminal. This permits the diagnostic tests to be run and the results
viewed either when there has been a major failure of the AM700 display system
or in the production area of manufacturing for automated testing prior to
shipment of the product.
In the diagnostic menus that are displayed, the controlling keys are given in the
column labeled “Key.” Other controlling keys are the =, used to reprint the
screen, and the @ key, used to abort the menu and return to the next higher level
in the menu tree. Another is the ! key, used in the Custom Run Mode menu to
report that the editing is done. When the AM700 display is operational, menu
selections are made by rotating the large control knob to highlight the choice to
make, then pressing the Select button to actually make the choice. The control
knob rotates through the menu choices in either direction. Some Front Panel
buttons can be used to make the selections directly as shown in Figure 6–16.
Low Level Diagnostic Interface
DIAGNOSTIC FRONT PANEL BUTTON USES
Some Front Panel buttons may be used in place of moving the
Key FR-PNL BUTTON
__________________________________
SPC (Pause) ........... Freeze
RET (Continue) ........ Enter
'@' (Abort) ........... Clear Menu
-#- Press Any Key to Continue -#-
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hilight cursor and pressing the <Select> button. Below are
some common diagnostic menu selections and their Front Panel
button equivalents.
'=' (Reprint) ......... Menu
'+' (Select All) ...... Units
'-' (Un-Sel All) ...... CLR
'!' (Done Selecting)... Enter
'0' -- '9' ............ "0" thru "9"
Figure 6–16: Front panel diagnostic selection buttons
Diagnostic Keystrokes