Heathkit H14 Manual page 10

Page 8
------------~
NONHEATH SYSTEM CONFIGURATION
•
INfERFACING
INTERFACE
CABLE
•
I
'I
- 1
~
1~ IT
.~
If;-
F,.
5
.r;-
i;o
5~
"
-:-
r;;-
.~
r,-
s~
i;o
-10
RTi
~
.:..:
~~
D~
R 14
~
o
15
c!.
peND
our
sou
N.C
SIN
OUI
RT
N.C
C1
IN
os
IN
SCN
OT
RLS
PICfORIAL 1
NOTE: If you use a baud rate higher than lID, the
system must use handshaking. See "Printer Hand-
shaking" below.
The following chart describes the leads of the I/O
cable. Also, see Pi~orial
1.
SIGNAL NAME
I/O Pin
/I
LEAD COLOR
51
ON CIRCUIT
BOARD
25·PIN "0"
CONNECTOR
lifO CONNECTOR I
•
1
2
3
•
5
6
7
8
9
10
11
12
13
,.
15
16
17
18
19
20
21
22
23
2'
25
Black
Red
Orange
Black-white
Black-green
Black-blue
White-red
White-blue
Not Used
Not Used
Not Used
Not Used
Not Used
White
Green
Blue
Black·red
Black-orange
White-black
White-green
Not Used
Not Used
Not Used
Not Used
Not Used
Protective ground (P GND)
RS-232C Serial Output (S OUT)
RS-232C Serial Input (S IN)
Request to send (RTSl Output (Printer Busy)
Clear to send (efS) Input·
Data set ready (DSR)*
Signal ground (SGND)
Received Line Signal Detect (RLSD)*
Current loop output - (OUT-)
Not used
Current loop output + (OUT +)
Not used
Current loop input - (IN -)
Current loop input
+
{IN
+
1
Data terminal ready (DTR) output
•
-These Jines not required for Printer operation.