Equipment Grounding Requirements; Jumper Arrangements For The T1/E1 External Sync Card; Jumper Settings For The T1/E1 External Sync Card - Zhone IMACS 8000 User Manual

Interface Card
JP8
JP6
JP7
Figure 8-2.Jumper Arrangements for the T1/E1 External Sync Card
Table 8-1. Jumper Settings for the T1/E1 External Sync Card
Jumper #
JP5
JP5
JP8 and JP11
JP8 and JP11
JP6 and 7
JP9 and 10
JP6 and 7
JP9 and 10
8.2.1.4

Equipment Grounding Requirements

When connecting cables from other AC-powered equipment (such as computer terminals) to
the Interface card, make sure the other equipment is properly grounded. Ground
connections are normally provided by the ground (third) prong of an AC plug. Some PCs,
especially portables and laptops, have power supplies with two-pronged plugs; they are not
properly grounded.
When a cable is run from a PC that is not properly grounded to the Interface port of the
system, a high voltage differential (up to 100 VAC) may result between the system and
the PC. This can severely damage the Interface card, PC, or both.
System Cards
JP2 JP4 JP5
JP2 JP4 JP5
JP1
JP1
JP5
JP5
Position
Open
Closed
Open
Closed
Open
Open
Closed
Closed
Interface Card Descriptions
JP11
JP10
JP9
Results
T1
E1
Balanced
Unbalanced
Ext1 (T1) 100 Ohms
Ext2 (T1) 100 Ohms
Ext1 (E1) 75 Ohms
Ext2 (E1) 75 Ohms
8-3