Data Communications Cabling; Interface Signals; Logic Levels; Cable Types - HP 2641A Reference Manual

Installation
THESE STRAPS CAN
ALSO BE READ IN STATUS
BY COMPUTER PROGRAM
I
A"--- ---.\
~~~VMN~O ~~~VMN~O
~ ~ ~ ~ ~ ~ ~ ~ 0 0 0 0 0 0 0 0
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
I-~~VMN~O
Z...J...J...J...J...J...J...J
-,a..a..a..a..a..a..a..
NCO
~C/)
+N
Figure 7-19. Asynchronous Multipoint Communications PCA Strapping Options
THESE STRAPS CAN
ALSO BE READ IN STATUS
BY COMPUTER PROGRAM
A \
~o
,r~ ~ ~
V M N
~
0
~ ~ ~ g
M N
~
0
~ v
(J)
0
~ c3
0
g g ~ g
~~~~~~~~ ~~~:-,~~QQ
I
««~~a:~~~~~
Figure 7-20. Synchronous Multipoint Communications PCA Strapping Options
DATA COMMUNICATIONS CABLING
INTERFACE SIGNALS
The RS232 signals available on each of the communica-
tion interfaces are listed in table 7-9. This information can
be used to verify interface capability or to fabricate special
interface cables. Refer to "Fabricating Your Own Data
Communications Cable" for additional cabling informa-
tion.
7-26
LOGIC LEVELS
Table 7-10 gives the logic levels of signals used by the
13260 series data communications accessories.
CABLE TYPES
There are five cable types that are available for use in
multipoint networks. These cables are described in table
7-11.