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Serial devices requiring RS-232 may cause a hang if the serial ports are not configured accordingly (Doc ID 1010645.1)

Last updated on AUGUST 28, 2019

Applies to:

Sun Ultra 2 Workstation - Version Not Applicable and later
Sun Blade 1000 Workstation - Version Not Applicable and later
Sun Blade 150 Workstation - Version Not Applicable and later
Sun Blade 2000 Workstation - Version Not Applicable and later
Sun Ultra 1 Workstation - Version Not Applicable and later
All Platforms

Goal

 To configure the serial ports for RS-232, some older Sun[TM] workstations and desktops need jumpers to be set on the system board. Many Sun CPU serial ports can be configured as either RS-232 (+/- 12V) or RS-423 (+/- 5V), defaults vary. See the hardware documentation for your machine to locate the jumper to configure this, if it exists. Most implementations do not have to worry about the voltage on the serial port.

Solution

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