Specifications

Chapter 2 Installation and Setup Installation and Operation Manual
2-2 Setting Internal Jumpers ASMi-31 Ver. 3.0
2.3 Package Contents
The ASMi-31 package includes the following items:
• One ASMi-31 unit
• Last Mile Access and Intelligent Modems CD
• CBL-530/449 adapter cable for the ASMi-31 units with V.36 interface
• AC/DC power plug
• RM-28 rack mount kit (if ordered).
2.4 Equipment Needed
ASMi-31 is a standalone device intended for tabletop or 19-inch rack installation.
It is delivered completely assembled. No provision is made for bolting the unit on
the tabletop.
The only equipment needed for installing ASMi-31 is a small screwdriver.
2.5 Setting Internal Jumpers
ASMi-31 contains internal jumpers (JP10 and JP11) that allow you to connect or
isolate the signal ground from the chassis ground and define unit’s compatibility.
Figure 2-1 shows jumper locations. Table 2-1 lists their possible settings.
Access to the inside of the equipment is permitted only to the authorized and
qualified personnel.
To avoid accidental electric shock, always disconnect the interface cables and the
power cord before removing the unit from its casing.
Line voltages are present inside ASMi-31 when it is connected to power and/or
the lines. Moreover, under certain fault conditions, dangerous voltages may
appear on the lines connected to the unit.
Any adjustment, maintenance and repair of the opened instrument under voltage
must be avoided as much as possible and, when inevitable, should be carried out
only by a skilled technician who is aware of the hazard involved. Capacitors inside
the unit may still be charged even after the unit has been disconnected from its
source of power.
ASMi-31 contains components sensitive to electrostatic discharge (ESD). To
prevent ESD damage, avoid touching the internal components. Before moving the
jumpers, touch the ASMi-31 frame.
Warning
Caution