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6–28
AM700 Audio Measurement Set Service Manual
One of the menu choices in the AM700 START UP MENU is the diagnostic help
menu. The help menu has two choices: List special instrument power up modes
and list diagnostic front panel button uses. Figure 6–16 lists the front panel
buttons that can be used directly to make menu selections. These keystrokes are
in lieu of highlighting the menu choice and pressing the Select button when one
of the listed key choices is available in a menu.
The other choice in the diagnostic help menu provides a list of the special power
up modes that are accessible through pressing and holding certain of the front
panel buttons at power on. These are referred to as the “backdoor boot modes.”
The choices are shown in Figure 6–17 or Figure 6–18 depending on the firmware
version in your AM700.
Low Level Diagnostic Interface
SPECIAL INSTRUMENT POWER-UP MODES
These modes are accessed by powering up the instrument with
POWER-UP MODES BUTTON(S) TO HOLD IN
-------------------------------------------
DIAGNOSTIC HELP .......... 1 & 2 & 3
SET DISPLAY INTENSITY .... Display
LOW LEVEL DIAGS INFC ..... Menu
-#- Press Any Key to Continue -#-
==================================
the indicated button(s) held in. The instrument will beep
twice and recognize the mode about 5 seconds after power-up,
after which the buttons must be released. The Boot Switches
HIGH LEVEL DIAGS INFC .... Menu & Rescale
QUICK START FFT .......... FFT
QUICK START ANALYZER ..... Analyzer
QUICK START DIGITAL ...... Digital
QUICK START MONITOR ...... Monitor
MUST be set to default (all closed) to access these modes.
UPDATE FIRMWARE .......... Configure and Storage
RUN DIAGNOSTICS .......... Limits
LOW LEVEL LOOP ........... Freeze
Figure 6–17: Special power up boot modes for V1.02 firmware
Diagnostic Help Menu
Backdoor Boot Modes