Chapter 5 MT1100C, MT1102C Cards
Installing MT1100C, MT1102C
5-5
5.4 Installing MT1100C, MT1102C
Setting Internal Jumpers and Switches
illustrates location of the internal jumpers on the PCB.
ALB DTE
PNL SW
J2
F5
F6
JP
4
DIS
DIS
EN
EN
JP
5
CHASS-GND
J3
DISCON
CON
TX&RX CODE
AMI
B8ZS
JP
6
TIMING SEL
RCV
INT
EXT
Figure 5-3. PCB Layout
Table 5-1. Jumper Settings
Jumper Description Values
Default
Setting
ALB DTE, JP4
Enables local analog
loopback activation from
the DTE (via pin 18 for
RS-530 or via pin “JJ” for
V.35)
EN
– The local analog loopback
activation from the DTE is
enabled
DIS
– The local analog loopback
activation from the DTE is
disabled
DIS
PNL SW, JP5
Enables activation of the
local analog loopback via
the front panel pushbutton
EN
– The LLB can be activated via
the front panel
DIS
– The LLB cannot be
activated via the front
panel
EN
TX&RX CODE, JP6
Selects the data receive
and transmit coding
B8ZS
AMI
B8ZS
