Verilink PRISM 3030 (34-00208.L) Product Manual - Manual (Page 28)

18 C HAPTER 2: I NSTALLATION
Token Ring
The Token Ring interface is designed to operate on both 4 and 16 Mbps networks.
For 4 Mbps operation, jumper J3 must be strapped across pins 1 and 2. For
operation at 16 Mbps, jumper J3 must be strapped across pins 2 and 3. The Token
Ring interface consists of a 9 -pin female connection compatible with shielded
twisted pair (STP) cable and complies with ISO /IEC 8802-5 (formerly IEEE
802.5). The pinout assignments are as follows.
Connection to unshielded twisted pair (UTP) cable may be accomplished using an
appropriate STP to UTP media filter/ adapter (Verilink PN 9-1001-056 -1). After
connection to the Token Ring LAN, the unit must be powered down and then back
up to allow the interface to perform a self test on the network.
Power
Connection The unit is factory equipped for one of three powering options as required by the
user. The 110 VAC version is supplied with a standard three- prong AC cord. The
220 VAC version is supplied with an unterminated cord. Both AC versions are
fused at 1.0 ampere.
The DC power version is equipped with terminal blocks for power connection and
is fused at 2.0 amperes. In all cases, a proper ground should be connected to the
GND terminal.
Remove power before checking fuses.
On power up, the board initialization sequence causes a delay. During this period, the
message on the front panel shows Calculating Checksum. Each voice application
module adds six seconds to the delay.
AC Power
Connection
1 Connect the AC power cord to an appropriate AC power receptacle.
2 Set the rear panel power ON /OFF switch to the ON position (labeled l ). The green
power LED on the front panel should light after the LED initialization sequence
ends. If the indicators do not light, recheck the power connections and the primary
AC circuit breaker. Make sure the ON /OFF switch is in the ON position.
Table 2-13 Token Ring Connector Pinout
Pin Token Ring Function
1 Data In (A)
6 Data In (B)
9 Data Out (A)
5 Data Out (B)
3 +5 volts
2, 4, 7, 8 Signal Ground
Shell Chassis Ground
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