Black Box 5000 manual 195

Appendix B: Cabling Diagrams

Cabling for the CCM and 6-Channel CEMs (continued)

PIN 1

25-PIN CONNECTOR			25-PIN CONNECTOR
	(MALE)		(FEMALE)
PROTECTIVE GROUND		1			1
TRANSMIT DATA		2			3
RECEIVE DATA		3			2
REQUEST-TO-SEND		4			8
CLEAR-TO-SEND		5			11
DATA SET READY		6			20
SIGNAL GROUND		7			7
CARRIER DETECT		8			4
UNASSIGNED		11			5
TRANSMIT CLOCK		15			18
RECEIVE CLOCK		17			24
EXTERNAL RECEIVE CLOCK		18			15
DATA TERMINAL READY		20			6
RING INDICATOR		22			25
EXTERNAL TRANSMIT CLOCK		24			17
BUSY		25			22
TO MULTISERVER				TO DCE

Figure B-3. To DCE, Male-to-Female Crossover Cable

(EZ424-0015).

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