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EPIM Specifications
222
CSX400 and CSX400-DC User’s Guide
EPIM-A and EPIM-X (AUI Port)
The EPIM-A is a DB15 female connector used to attach segments to an external transceiver. The 
EPIM-X is equipped with dual internal transceivers. It has a DB15 male connector used to attach 
segments to an AUI cable. 
 provides the DB15 
pinouts.
Figure 82
 
The EPIM-A and EPIM-X
!
CAUTION
The EPIM-A is equipped with a fuse (F1) to protect against risk of fire. For continued 
protection against the risk of fire, replace fuse F1only with the same type and rating of 
fuse (1A, F250V). 
Table 32 DB15 Pinouts
Pin Number
Represents
Pin Number
Represents
1
Logic Ref.
10
Transmit -
2
Collision +
11
Logic Ref.
3
Transmit +
12
Receive -
4
Logic Ref.
13
Power (+12Vdc)
5
Receive +
14
Logic Ref.
6
Power Return
15
No Connection
7
No Connection
Connector Shell
Positive Ground
9
Collision -