System Features
VL-EPIC-25 Reference Manual
26
C
LEARING THE
R
EAL
-T
IME
C
LOCK
You can move the V3 jumper to position [2-3] for a minimum of two seconds to clear the RTC.
When clearing the RTC:
1.
Power off the Iguana.
2.
Move the jumper from V3[1-2] to V3[2-3] and leave it for two or more seconds.
3.
Return the jumper to V3[1-2]. (The board will not boot if the jumper is not returned to
this position.)
4.
Power on the Iguana.
This procedure sets the RTC date to Sat 01/01/2011. The time is not reset by this
procedure; however, the time is reset to 00:00:00 if battery power is lost.
Console Redirection
The Iguana can be configured for remote access by redirecting the console to a serial
communications port. The BIOS setup utility and some operating systems such as DOS can use
this console for user interaction.
Console redirection settings are configured in the
Serial Port Console Redirection BIOS setup
screen
. Console redirection is disabled by default.
Console redirection can be disabled or redirected to one or more COM ports that will share the
video console. The default settings for the redirected console are 115.2 kbps, 8 data bits, 1 stop
bit, no parity, and no flow control.
Null Modem
The following figure illustrates a typical DB9 to DB9 RS-232 null modem adapter.
Figure 12. Null Modem with Loop-back Handshaking
Pins 1, 4, and 6 are shorted together on each connector.
