FMUser RDS-C - 14.3 Troubleshooting

FMUSER INTERNATIONAL GROUP INC. 广州市汉婷生物技术开发有限公司
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14.3 Troubleshooting
The RDS encoder has been designed to make its use as easy and painless as possible. However, success depends
upon a number of settings and things working together correctly. While correcting problems is usually quite simple,
the difficulty lays in knowing where to look.
Factory default settings assure right operation after first power-on. This section of the manual is designed to assist
you in determining the cause of problems that may occur so they can be fixed quickly.
Problem
Section
Solution / Check
related
Windows control software Terminal
No RDS output, no LED
5.3
Power supply problem.
indication.
5.1
RDS output connected to right input of the transmitter?
No RDS output, LED
Adjust higher RDS level or higher input sensitivity on the transmitter.
5.4.1
indicates operation.
RDS generator switched on?
12.2
Options – Special – Switch on RDS
RDSGEN=1
Make sure all connectors are seated completely and where possible,
The unit does not
5.5.7
use screws to fix the connection.
communicate with PC and Make sure you have selected right COM port.
10.1
the LED does not indicate
12.2
Options – Preferences – List...
data receive. *)
Try the unit with different cable and different PC.
The unit does not
•
Baudrate differs from the unit configuration.
communicate with PC but
•
Addressing is enabled and the unit is unselected.
the LED indicates that data
9.2.4
•
No header communication is active.
are received. *)
Enable Bidirectional and
10.2
* Try after disabling the
11.6
Autodetect port speed options
Try on each baudrate:
11.7
(Options – Preferences)
bidirectional mode in
SEL=ALL
12.2 Options – Special – Assign unit
Preferences and clicking on
<ESC><ESC><ESC><Enter>
any Send button or using
address
–
Disable, override
Hyperterminal and typing a
Options
–
Special
–
No Header
series of <Enter>.
mode
–
Switch off
Radiotext stopped working
The RT service is not included in the Group sequence. This may occur
also after firmware update to version 1.5b. The Group sequence is a
although I’m sure that it’s
11.7
new feature that needs to be initialized.
enabled and entered
Options – Special – Group
correctly.
G
RPSEQ=
sequence – Default, Store.
Pilot tone is fed to the unit 5.1
System sheet – Clock Source:
EXTSYNC=1
but it is not indicated. 5.4.3 Auto, Store
The unit loses time and date 4.1
Replace the on-board battery.
after power off. 4.2
•
The unit is connected in loopthrough mode and the MPX level
exceeds 3.3 V pp but the JP1 is set to 1-2 instead of 2-3.
The audio is distorted. 5.1
•
The unit is not connected in loopthrough mode but JP2 was
forgotten on the board. Remove the jumper.
There is a whistling in the 5.2
•
The RDS level considerably exceeds maximum value allowed.
audio. 5.4.1
Adjust lower RDS level. Use an FM analyzer for the best result.
•
Applied input of the transmitter is not suitable for RDS. Follow
the transmitter documentation.
No audio on air
5.1
The unit is connected in loopthrough mode but JP2 is left open (not
5.2
present). Place the jumper on the JP2 position.