13. Standard Interfaces – Pin Assignments
VRack 4U – User's Guide (prelim. version V0.99)
13.
Standard Interfaces – Pin Assignments
Low-active signals are indicated by a minus sign.
13.1.1.
Serial Interface (RS232)
Pin Signal
Name
9-pin D-SUB Connector
1
DCD
(Data Carrier Detect)
2 RXD (Receive
Data)
3 TXD (Transmit
Data)
4
DTR
(Data Terminal Ready)
5 GND (Signal
Ground)
6
DSR
(Data Set Ready)
7
RTS
(Request to Send)
8
CTS
(Clear to Send)
9 RI (Ring
Indicator)
13.1.2.
VGA Port
Pin Signal
Name
15-pin D-SUB Connector (female)
1
Analog red output
2
Analog green output
3
Analog blue output
4 N.C.
5-8 GND
9
+5 V (DDC)
10 GND
11 N.C.
12 SDA
(DDC)
13 TTL
HSync
14 TTL
VSync
15 SCL
(DDC)
36
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