Nortel Networks DCT1900 manual Tables, Clu Slu

Technical Product Manual - DCT1900

Configuration Directions, Base Station Powering

The following resistance values for the twisted pairs are used:

z 26 AWG wire cable		:	.082	/ft.
z	24 AWG wire cable	:	.055	/ft.
z	22 AWG wire cable	:	.034	/ft.

Tables

	Cable			Maximum cable length
Type	Wire size (∅)	Capacitance	Superimposed noise		Superimposed noise
	AWG		8 mV/pHz		10 mV/pHz
			CLU	SLU	CLU	SLU
			11/2	CLU-s	11/2	CLU-s
Twisted pair	26ga	15 pF/ft.	7540 ft.	4920 ft.	6560 ft.	4260 ft.
Twisted pair	24ga	15 pF/ft.	11480 ft.	6880 ft.	9840 ft.	6230 ft.
Twisted pair	22ga	40 pF/ft.	6880 ft.	4260 ft.	5900 ft.	3930 ft.
Double twisted pair	22ga	40 pF/ft.	6160 ft.	3930 ft.	4920 ft.	3280 ft.
(J–Y (St)Y 2 2 0.6)

Table 4–1 "Data Limited" Cable Length

Worst Case Power Consumption of Base Station =		7.5	W
Based pm Class 3	=	23	dbm
Minimum Input Voltage of Base Station	=	21	V

			Maximum Cable Length (feet)
Wire size	Power Supply Voltage			Power Supply Voltage			Power Supply Voltage
(∅)		27.5 V			42 V			48 V
	0 EPP		1 EPP	0 EPP		1 EPP	0 EPP		1 EPP
26 awg	418		627	1405		2107	1842		2763
24 awg	627		941	2107		3161	2763		4145*
22 awg	1026		1539	3448*		5172*	4522*		6782*

* Cable lengths should never exceed the values given in Table 4–1, because of data limitations

Table 4–2 Maximum Cable Length when Powering via Data Pairs and Express Powering Pairs

Config-DCT1900/R8/mw	4-5
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