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CHAPTER 2: Installation
2. Installation
1. Unpack the DS3 Provider Unit and its power supply.
2. Plug the power supply into both the power source and the back of the Unit.
It doesn’t matter in which order you do this. Verify that the Unit’s Power LED
is lit.
NOTE
The Unit’s 100, Act, and Lnk LE s will also light until the S3 link has
been established. In addition, the Unit won’t present Ethernet Link when
the S3 line is not operational.
3. Make sure that the Provider Unit’s configuration DIP switch is set correctly
for your application:
• Switch position #1, on the left, controls the clock source: Leave it in the
default DOWN setting for Local (internal) clock, or move it to UP for Loop
clock. (When you set the same switch on the Subscriber unit, don’t set
position #1, because the Subscriber Unit always gets its clock from the
Provider Unit.)
• Switch position #2, on the right, controls the TX line build out: Leave it in
the default DOWN setting for 0 to 255 ft. (0 to 77.7 m) or move it to UP for
255 to 450 ft. (77.7 to 137.2 m).
4. Plug your DS3 cables into the DS3 TX and RX BNC ports on the back of the
Provider Unit. Verify this connection by looking at the DS3 Lnk LED on the
front of the Unit. If it’s pulsing steadily once per second, a DS3 connection is
established and operational.
5. The Provider Unit’s Ethernet port is 10/100-Mbps auto-negotiating. We
recommend that, if possible, you set the hub, switch, PC, etc., at the other end
of the Ethernet cable to auto-negotiate as well, before you connect the cable.
Plug your Ethernet cable into the Fast Ethernet RJ-45 port on the back of
the Provider Unit. Verify this connection by looking at the Fast Ethernet Lnk
LED on the Unit’s front panel. If it’s steadily lit, an Ethernet connection has
been established. Also check the 100 LED: If it’s lit, the link is operating at
100 Mbps; if it’s dark, the link is operating at 10 Mbps.
