9
CHAPTER 3: Configuration
LK7: Data Inversion
The setting for jumper LK7 determines whether data will be inverted or not
inverted.
LK7
Setting
Strap Installed
Data Inverted
Strap Omitted
Data Not Inverted (Default)
3.2 Rear-Card Configuration
The MicroNTU G.703 Card has two rear interface card options: for the
MT245A, 120-ohm (modular) network and EIA-530 (DB25) terminal, or,
for the MT246A, 75-ohm (dual BNC) network and X.21 (DB15) terminal.
Each is configured differently.
3.2.1 C
ONFIGURING THE
120-O
HM
R
EAR
C
ARD
The 120-ohm rear card has five configuration jumpers (LK1 through LK5).
Figure 3-3 shows the locations of the jumpers on the 120-ohm rear card.
Figure 3-3. 120-ohm rear card jumper locations.
LK5
LK4
LK1
LK2
LK3
