Contents
555-233-1168 Issue 4 October 2002
Wire the 1146 power distribution unit 39
Replacing the batteries 40
Storing the batteries in inactive units 40
Repairing short circuits and resetting red LEDs 40
■ 1151A and 1151A2 power supplies 40
Desk mounting 42
Wall mounting 42
Standards compliance 42
3 Extenders for 2-wire DCP endpoints 43
■ 2-wire DCP endpoints 43
■ DCP extender, stand alone 45
■ DCP extender, rack mount 46
4 Data modules and asynchronous data units 47
■ Understanding RS-232 communications 48
■ Installation procedure 49
■ Obtain required equipment 50
■ Set hardware options 50
Setting 7400A data module hardware options 50
Setting 7400B data module hardware options 52
■ Connect data modules 54
Connecting a single data module 55
Connecting multiple data modules to the system 56
■ Administer the data modules 95
■ Asynchronous data units (ADU) 98
