
Installation and Operation Manual Chapter 2 Installation and Setup
ASM-40 Ver. 1.0 Installation and Setup 2-5
Table 2-1. ASM-40 Internal Jumpers and Switches (Cont.)
DIP Switch Function Possible Settings Factory
Setting
RLBE section,
SW3/6
Enables remote digital loopback
activation from the DTE (via pin
21 for V.24, RS-530, V.36 or
via pin “HH” for V.35)
ON – The remote digital loopback activation
from the DTE is enabled
OFF – The remote digital loopback activation
from the DTE is disabled
OFF
Note
:
Set this section to DIS if the DTE interface does not support the remote digital loopback activation via the
appropriate pin.
SW5 Selects data rate SW54
SW53 SW52 SW51
0 0 0 0 2048
0 0 0 1 1920
0 0 1 0 1544
0 0 1 1 1536
0 1 0 0 1024
0 1 0 1 768
0 1 1 0 512
0 1 1 1 384
1 0 0 0 256
1 0 0 1 192
1 0 1 0 128
1 0 1 1 64
1 1 0 0 32
256
(64)
Note
:
For the G.703 and V.24 interfaces, the
default setting is 64.
J4, CHASS Controls the connection
between the ASM-40 signal
ground and the frame (chassis)
ground
CON – Signal ground is connected to the frame
ground
DIS – Signal ground is disconnected from the
frame ground
CON
Note: Disconnecting the signal ground from the frame ground may render the unit unsafe for connection to
unprotected telecommunication networks in some locations.
Connecting the Interfaces
Figure 2-2
illustrates the AC-powered ASM-40 rear panel.
DTE
MT RCV GND
Figure 2-2. ASM-40 with V.35 Interface and Terminal Block Line Connector (AC Version)
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