Specifications

S
X-2000 General Information Guide
2
6 Revision A 5000309
7
• DSU Backplane: The backplane holds up to four DSU cards, two fiber interface modules,
two
peripheral resource cards, the power supply cable, and two Maintenance Terminal
ports. The four DSU cards are split into pairs (each pair with a FIM, Peripheral Resource
card, and maintenance port). The following switches and connectors are located on the
DSU backplane (rear panel):
- A power on/off switch
- A small red sliding switch for selecting the input power source. The switch can be set
to either 115 Vac, 60 Hz or 230 Vac, 50 Hz (AC systems only).
- A 3-conductor male receptacle to connect AC power (AC systems only)
- A 3-conductor terminal block to connect DC power (DC systems only)
- A sliding panel for the Tx and Rx fiber optic cables
- Two RS-232 Maintenance Terminal ports
- A 3 inch wide x 4 inch high (7.6 cm x 10.2 cm) metal box projecting from the middle of
the panel. The box holds up to four CEPT or DS1 Interface Assemblies.
CAUTION: Do not connect any devices to the female power receptacle.