Checking The Cbit State - R&S 4200 Series Operating Manual

Visual Inspection
Indication
LED GO
not illuminated
LED VOP
not illuminated
4.1.3

Checking the CBIT State

Displayed warnings
and/or error
messages
Possible cause of fault
CBIT detected error
(At least one CBIT error or NOGO
warning exists in the radio.)
Radio set to "OFF"
(standby operation). Display shows
INACT in standard operating display.
Hardware input *OFF on rear panel
connector X5.7 or X10.7 is
connected to ground.
Radio was switched off remotely via
remote control command or locally
via front panel of the radio.
For detection of device and system failures, continuous built-in test (CBIT)
functions are implemented in the equipment.
The CBIT starts directly after switching on the transceiver

 Warnings and/or error messages produced during ongoing operation
are displayed in the CBIT STATUS menu (see chapter 3.4.7.5)
When malfunctions (warning or error message) are detected, the failure
is signalled to the connected remote control unit.
CBIT always indicates the existing state, which means that as long as a
message is being indicated by CBIT, this problem persists.
Check CBIT status
Check NOGO configuration via
service PC
Check radio environment (antenna,
DC voltage)
Activate radio using a proper remote
control command or switch over to
active mode locally (see chapter
3.4.7.2)
Check hardware Input *OFF on
connector X5.7 or X10.7 if a
contact to ground is applied.
Activate radio using a proper remote
control command or switch over to
active mode locally.
4.3
R&S XU 4200
Remedy
6166.5368.02.01