ATL TELECOM USER GUIDE
AM2048A OS/OM
47
8
47
8.5
MOTHERBOARD
The fuse FS400 is a 1A slow blow fuse to protect the DC input.
FIGURE 3 MOTHERBOARD FUSE LOCATION
WARNING
Only authorised personnel are allowed to open the DSL System case to change the
fuse. Misuse or any modifications carried out to this unit other than in accordance
with the instructions supplied, will invalidate the guarantee and CE approval.
TIF 1
TIF 2
TIF 3
PIM
CON7
CON1
CON3
CON5
CON2R
CON2L
CON4R
CON4L
CON6R
CON6L
CON8
CON10
CON11
CON12
CON9
PSU
PWR Fed
W
etting
J1
FS400
46
ATL TELECOM USER GUIDE
AM2048A OS/OM
8.3
X.21 PLUG IN MODULE MK II
The X.21 module may be configured as a DCE or DTE.
The 120 termination is always in.
In DCE mode, the module may be configured to generate Byte Timing (B) or receive the DTE
clock (X).
In DTE mode, the module may be configured to receive Byte Timing (B) or generate a DTE
clock (X).
8.4
V.35 PLUG IN MODULE (MK I AND MK II)
The V.35 module may be configured as a DCE or DTE. Both links must be in the correct
position. If the links are incorrectly set, the unit will detect the illegal setting.
DCE
DCE
DTE
DTE
DCE
DTE
X
B
