3Com 32x, 52x STP Connector and Cable, 2UTP Cable Types, MAUs, and Emissions Compliance, Shielded

Connectors and Cables 2-7

Table 2-2UTP Cable Types, MAUs, and Emissions Compliance

	MAUs	Emissions Compliance*
	Active	FCC and	EN55022 and
Cable Type	Passive Retimed	VCCI Class A	VDE Class B

UTP†	100 ohm:
	Category 3	no	yes	yes	no
	Category 4	yes	yes	yes	no
	Category 5	yes	yes	yes	no
Shielded	100 ohm:
UTP†
	Category 3	no	yes	yes	yes
	Category 4	yes	yes	yes	yes
	Category 5	yes	yes	yes	yes

* Shielding of all cable types should be terminated 360 degrees at the cable plug.

†All UTP compliance testing was accomplished using cables built with Stewart Connector Co. connector, part number 940 SP-36-08-08.

STP Connector and Cable

The following figure shows the pinouts of the STP connector (DB-9). The connector bodies connect the cable shield to chassis ground.

	STP
5 4	3	2 1	1	RX	6	RX
			2	GND	7	GND
			3	+5 V	8	GND
			4	GND	9	TX
9	8 7	6	5	TX

DB-9 female (shielded)

Table 2-2 lists cable types, multistation access units (MAUs), and emissions classes compatible with the STP connector.

Table 2-3STP Cable Types, MAUs, and Emissions Compliance

	MAUs	Emissions Compliance*
	Active	FCC and	EN55022 and
Cable Type	Passive Retimed	VCCI Class A	VDE Class B

STP	150 ohm:
	IBM Type 1	yes	yes	yes	yes
	IBM Type 6	yes	yes	yes	yes

* Shielding of all cable types should be terminated 360 degrees at the cable plug.