Appendix D
Connectors
© National Instruments Corporation
D-5
VXIpc-486 Model 500 Series
LPT
SYSFAIL
FAILED
TEST
ON LINE
ACCESS
DRIVE
TURBO
VGA
COM2
DISK
DRIVE
COM1
LPT
TRG IN
AUDIO/
TRG OUT
CLK
KEYBOARD
GPIB
RESET
LPT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Connector Type:
25-pin Subminiature
DHD-20
Figure D-5. LPT Connector
Table D-5. LPT Connector Signals
Pin
Signal Name
Signal Description
1
STROBE*
Data Strobe
2
D0
Data Bit 0
3
D1
Data Bit 1
4
D2
Data Bit 2
5
D3
Data Bit 3
6
D4
Data Bit 4
7
D5
Data Bit 5
8
D6
Data Bit 6
9
D7
Data Bit 7
10
ACK*
Acknowledge
11
BUSY*
Device Busy
12
PE
Paper End
13
SLCT
Select
14
AUTOFD*
Auto Linefeed
15
ERROR*
Error
16
INIT*
Initialize Printer
17
SLCTIN*
Select Input
18
GND
Ground
19
GND
Ground
20
GND
Ground
21
GND
Ground
22
GND
Ground
23
GND
Ground
24
GND
Ground
25
GND
Ground