Troubleshooting CMU
1100.4903.82 3.58 E-4
Troubleshooting using the INFO Menu for Modules
The INFO menu can be called up via the INFO key on the front panel of the CMU from each
measurement application of the CMU. Thus, it is possible to get diagnostic voltages, when the
measurement application on the respective module is exactly selected, e.g. to determine whether a PLL
has locked in.
The respective module state can be selected via the softkey SELECT and the spinwheel.
The following info menus are available:
• FE State
• REF State
• DIG State
• RXTX1 State
(State test MODULE RF FRONTEND for diagnostic voltages, in this
case all measured values are indicated.)
(State test MODULE REFERENCE BOARD for diagnostic voltages, in
this case all measured values are indicated.)
(State test MODULE DIGITAL BOARD for diagnostic voltages, in this
case all measured values are indicated.)
(State test RXTX1 BOARD for diagnostic voltages, in this case all
measured values are indicated.)
After having selected and confirming with the ENTER key, the test can be started by selecting the TEST
softkey and the ON key.
Pressing the REPORT softkey and turning the spinwheel the indicated page can be pulled up and down.
Note: Diagnostic voltages which are called up by the INFO key, are partly depending on the active
measurement application. Which is why some voltages may be out of tolerance (red color),
when this function is not used by the selected application.
If the fault is not clear, it is useful to call up the SELFTEST Menu and check all diagnostic voltages
of the modules to determine whether there are discernible deviations.
This knowledge then enables a specific module replacement in order to eliminate the error.
To Next Page
Loading...
Need help?
General
