Service Menu - HP 54520 Series Service Manual

Service Menu
Service Menu
The service menu contains functions that are used only during service procedures. The figure
below diagrams the menu. Service menu use is covered in the appropriate procedures.
CAL DAC AND CLOCK VERIFY (cal selects 0, 1) provides two signals to check at the rear
panel BNC outputs.
e The 0. 10MHz timebase to AC BNC signal is a 10 MHz signal derived from the 100
MHz sample clock. When selected, it is sent to the AC cal output.
e The1. DC CAL BNC verify signal represents the limits of the dc calibration signal.
Either the 0 V or 5 V reference can be selected and checked at the DC cal output.
PROTECTED SYSTEM CAL DEFAULTS (cal select 2) loads baseline firmware calibration
factors, which is necessary before performing self calibration. This function is protected by
the Calibration switch on the rear panel.
2 gefeult cal
— Se
steri cal
~~" = continue
ooort
exit menu
DC CAL BNC
' 1
| verify doc outoui
ee ae ee
@ voir
= exit menu H S volt
a542g01
Service Menu
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