RAD Data comm ASM-20 Package Contents, Mechanical Installation, Electrical Installation

Chapter 2. Installation and Setup ASM-20Installation and Operation Manual

2.3 Package Contents

The ASM-20 package includes the following items:

∙

∙

∙

∙

∙

ASM-20

AC cord

48 VDC plug (optional)

Adapter cable for the different interfaces (optional)

ASM-20 Installation and Operation Manual.

2.4 Mechanical Installation

ASM-20 is a standalone device designed to be placed on a tabletop or bench. It is delivered completely assembled. No provisions are made for bolting ASM-20 to the tabletop.

2.5 Electrical Installation

The line and digital interface connectors (located on the rear panel of ASM-20) consist of a DTE interface connector and a five-screw terminal block. The DTE interface connector may be 34-pin for V.35 (see Figure 2-1), 15-pin for X.21 (see Figure 2-2) or 25-pin for RS-530/RS-422 or RS-232/V.24.

The terminal block provides a connection between transmit and receive twisted pair lines. The transmit and receive pairs are polarity insensitive. The transmit pair is connected to the terminals marked XMT, the receive pair is connected to the terminals marked RCV. If the cable is shielded, the shield

may be connected7<3(),5(3527(&7,21&$87,21￿5(3/$1'5￿$)25$&(7,1*$*21/<$&21,18(',162)7:,7+)86(5,6.￿62)$to0(the terminal marked GND.

D T E

XM T R C V G N D

Figure 2-1 ASM-20 - V.35 Rear Panel

2-2 Electrical Installation