Tektronix 2221 - INTERCONNECTION CABLE-TYPE IDENTIFICATION; RS-232-C INTERCONNECTION CABLE-TYPE ILLUSTRATIONS

-
Appendix B - 2221 Operators
П
П
INTERCONNECTION
CABLE -
TYPE
IDENTIFICATION
interconnections
and
the
null
modem
(
Type B )
interconnections . Both the straight through and the null
modem
interconnections will also
require
gender
changers
when making male - to - male or female - to - female equipment
hookups . In summary , the basic cable types are :
1
n
The cable - type designations found in Table B - 1
correspond to the interconnection illustrations following the
table
.
The
most
-
used
interconnections
seen
with
different
RS - 232 - C
printers are
covered
. In
the
table , the
information in
column 1 (
Type of
Interconnection
)
is
inter
preted
as
follows
:
DTE / male to
DCE /
female
means
a
DTE
type
device
with a
male RS
- 232 - C
connector
connected to
a DCE type
device that has a
female
RS - 232 -
C
connector
( a
standard
RS -
232
- C
male
- to -
female
interconnection ) .
1. Standard or " straight through ” cables with a male
connector on one end and a female connector on
the other .
RS - 232 - C
INTERCONNECTION
CABLE
-
TYPE
ILLUSTRATIONS
2. Null modem
cables that
may be
customized to make
the necessary connector matings . These come as male
to -
female
,
female
- to -
female
, and
male - to - male
.
The cable -
wiring
illustrations of B - 2
through B - 7
correspond to the Cable - Type designations of Table B - 1 .
They are
divided into
the
straight
through
(
Type
A
)
3. Gender
changers
are
straight - through
cables with
either
male
connectors or
female connectors on both
ends .
Table B - 1
Cable -
Type
Identification
П
П
or
Type
of
Interconnection
Cable -
Type
Designator
Application
Straight
-
Through
Cables
DTE / male
to DCE /
female
A
Use a straight through cable terminated on one end with a male connector
and on the other end with a female connector . This is the standard " cable
connection
in
our
discussion .
DTE /
female
to DCE /
male
DTE / female to DCE / female
A1
Use a male - to - male gender changer and a standard cable .
Use a female - to
- female gender
changer and a
standard
cable .
DTE /
male
to DCE
/
male
A2
Null - Modem Cables
DTE / male
to DTE /
male
B
Use a null modem cable terminated with female connectors . This is the
" standard null modem " in our discussion .
DCE / male to
DCE / male
DTE /
female to DTE /
male 81
Use
a
standard null
modem
with
a
male
- to
-
male
gender
changer or use
a
male - to - female
null modem .
DCE / male
to DCE /
female
DTE / female
to DTE /
female
B2
П
o
n
П
П
П
1
Use two male - to - male gender changers and a standard nuil modem cable
or use a male - to - male null modem .
DCE /
female to DCE /
female
O
B - 3