CHAPTER 3: Installation and Setup
17
Figure 3-2. Internal boards on MT1000A-85-E1 and MT1000A-13-E1.
Channel Interface
The nominal impedance of each interface is selected by a group of five jumpers. The four groups include:
JP4, JP8, JP12, JP16, JP20 for Channel 1;JP3, JP7, JP11, JP15, JP19 for Channel 2;
JP2, JP6, JP10, JP14, JP18 for Channel 3;JP1, JP5, JP9, JP13, JP17 for Channel 4.
The type of interface can be independently selected for each channel,
but all jumpers serving a given channel must always be
set to the same position
.
120
Ω
BAL:
Operation with the balanced interface. In this case, connect to the RJ-45 connector.
75
Ω
UNBAL:
Operation with the unbalanced interface. In this case, connect to the BNC connectors.
Factory setting:
120
Ω
for all jumpers.