Verilink PRISM 3111 (34-00242) Product Manual - Manual (Page 22)

14 C HAPTER 2: I NSTALLATION
Data Port
Connections
The PRISM 3111 is equipped with either a V.35 port (on a standard 34-pin
connector) or an EIA-530 port (on a standard 25-pin connector). The PRISM 3112
is available with two ports. Pin functions for the high speed port interface are
listed in Table 2-7.
FCC rules require that interconnecting cables carrying high speed data be shielded
appropriately in order to minimize radio frequency interference.
Power Connection The PRISM 3111/3112 can be powered by either an AC or DC suppy. When
power is applied to the unit, the front panel indicators flash for approximately five
seconds as the unit initializes. The green power LED on the front panel will
remain illuminated as long as the unit receives power.
AC Power
AC powered units use a 115 VAC captive power supply. There is no power switch.
Per UL 1950 and CSA 950 Clause 1.7.2, if the power supply cord is intended to
serve as a disconnect device, a socket must be installed near the equipment and be
easily accessible.
9 DCD In
10 Tx Clock In
Table 2-6 DBU Port Pinout
Pin Connection
Table 2-7 High Speed DTE Interface
Common Name V.35 (34-pin) EIA-530 (25-pin)
Frame Ground A 1
Transmit Data P, S 2, 14
Receive Data R, T 3, 16
Request to Send C 4, 19
Clear to Send D 5, 13
Data Set Ready E 6, 22
Signal Ground B 7
Data Carrier Detect F 8, 10
Transmit Clock Y, AA 12, 15
Receive Clock V, X 9, 17
Local Loopback J 18
Data Term Ready H 20, 23
Remote Loopback BB 21
Terminal Timing U, W 11, 24
✍