IHSE USA 474 Series Draco vario - Manual (Page 71)

Troubleshooting
2013-03-12
71
8.3 Serial Connection
Diagnosis Possible Reason Measure
Settings of the serial
interface  Check Baud rate and general
settings.
No serial connection to
CPU  Check connection via serial
cable.
Serial device
not operational
No serial connection to
end device (e.g. touch
screen, keyboard)  Connect serial end device and
switch it on.
 Check connection via serial
cable.
Touch screen
not operational Hardware handshake  Adjust serial interface to X-ON /
X-OFF software handshake.
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8.4 Analog Audio
Diagnosis Possible Reason Measure
No audio connection to
CPU / audio source  Connect analog audio source.
 Check audio cable.
No Signal  Switch analog audio source on.
 Activate analog output at CPU /
audio source.
CON Unit:
No signal at
audio output
No audio connection to
audio sink
(e.g. speakers)  Connect analog audio sink and
switch it on.
 Check connection of audio cable.
No audio connection to
audio source
(microphone)  Connect analog audio source
(microphone).
 Check connection of audio cable.
No signal  Switch analog audio source on.
 Activate analog output at audio
source.
CPU Unit:
No signal at
audio output
(microphone)
No audio connection to
audio sink (e.g. CPU)  Check connection to CPU.
 Check connection of audio cable.
 Check audio configuration.
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