• In dusty areas or in areas where sulfuric gases are produced.
• In places where shocks or vibrations are frequent or strong.
• In places where water or other fluids comes in contact with the equipment.
• In areas near high-frequency machines or electric welders.
• Near computers, telexes, microwaves, air conditioners, etc.
• Near radio antennas (including shortwave).
1.1.5 Unpacking
Unpack the KSU and check it against the following list. Inspect for physical damage.
Table 2-1 KSU Packing List
Items List of Contents QTY
1228M-B KSU 1228M-B KSU 1
AC Power Cord 1
Screws (M4.1x25) 4
Wall-Mounting Template 1
End User License Agreement (EULA) 1
1.2 Installing the Main KSU (1228M-B KSU)
The Main KSU has a CPU-B card, an eight digital and four analogue extension Interface, a control
relay circuit for External devices, and two mounting spaces for optional cards (080E-B1/008E-
B1/000E-B1/1PRIU-C1).
An Expansion KSU can be added increasing system capacity. Each KSU (Main or Expansion) is
powered by its own power supply.
Sub-Cover
Tab
< Front view >
S1
J3
CPU card
EXP3EXP2
VOIPLAN
VOIP
EXP1
EXP3
LOAD SERIAL
EXP2EXP1
Tab
Figure 2-1 CPU Card Location
Table 2-2 Items on the CPU card
Item
Description
S1 (LOAD) Switch for System Restart/System Reset (Cold start occurs)/Upload Software
SL1100 ISSUE 4.1 (R5.1)
2-2 Installation
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