
Installation and Operation Manual Chapter 2 Installation and Operation
ASM-40CD Ver. 1.0 Interfaces and Connections 2-5
Setting Internal Jumpers
The DTE1 and DTE2 jumpers serve for selection of the serial interface type
(see
Figure 2-4
).
P1
P4
P2
P5
P3
P6
DTE1
J5
DTE2
F1
F2
F3
F4
F5
F6
F7
F8
Figure 2-4. Interface Module LRSI-F-5 Jumpers and Fuses
To select the serial interface type:
• V.24, X.21, RS-530 and V.36 – Set the DTE1 and DTE2 jumpers over the P1
and P2 pins.
• V.35 – Set the DTE1 and DTE2 jumpers over the P2 and P3 pins.
Installing the Interface Module into the Chassis
To install the interface module in the LRS-24 chassis:
1. Insert the interface module into the upper section above the ASM-40CD
module of the LRS-24F chassis, or back section of the LRS-24B chassis.
2. Fasten two front panel screws to secure the module to the LRS-24 frame for
proper grounding.
2.5 Interfaces and Connections
The ASM-40CD modem is connected to the line and DTE via the interface module.
Identify the necessary cables for the interface module you have installed and
prepare the line and DCE cables.
Use
Table 2-4
to prepare the line cable.
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