R&S XU 4200 - Checking the CBIT State

Visual Inspection R&S XU 4200
4.3 6166.5368.02.01
Indication Possible cause of fault Remedy
LED GO
not illuminated
CBIT detected error
(At least one CBIT error or NOGO
warning exists in the radio.)
Check CBIT status
Check NOGO configuration via
service PC
Check radio environment (antenna,
DC voltage)
LED VOP
not illuminated
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.
Activate radio using a proper remote
control command or switch over to
active mode locally (see chapter
3.4.7.2)
Che
ck hardware Input *OFF on
con
nector 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.
4.1.3 Checking the CBIT State
Displayed warnings
and/or error
messages
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)
Whe
n malfunctions (warning or erro
r 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.