Specifications

Chapter 2 Installation and Setup Installation and Operation Manual
2-8 Cable Connections SPS-6, SPS-12
Synchronous Links Connection
The SPS-6, SPS-12 synchronous links interfaces are configured as DTE interfaces,
intended for connection to synchronous modems that are capable of providing the
clock signals that determine the unit's synchronous links data rate. The
synchronous link connector type depends on the interface type:
• RS-232/V.24: 25-pin D-type, female connector
• X.21: 25-pin D-type, female connector
• V.35: 25-pin D-type, female connector
• RS-530: 25-pin D-type, female connector
• V.36/RS-449: 37-pin D-type, female connector (via adapter cable)
• IR-ETH: 10BaseT, UTP cable, RJ-45
• ISDN: S-interface, UTP cable, RJ-45
• DDS: CSU/DSU interface, UTP cable, RJ-45.
For the connector pinouts, refer to Appendix A.
The user data cables and the synchronous links cables should be shielded, in order
to comply with FCC rules. SPS-6, SPS-12 and its data interfaces will work well even
if the cables are not shielded, but some radio interference may occur.
Power Connection
AC power should be supplied to SPS-6, SPS-12 through the 5 ft (1.5m) power
cable terminated by a standard 3-prong plug. Connect the cable between the AC
mains connector on the unit's rear panel and a standard grounded AC outlet.
BEFORE APPLYING POWER TO THIS INSTRUMENT, the protective earth
terminals of this instrument must be connected to the protective ground
conductor of the (mains) power cord. The mains plug shall only be inserted in
a socket outlet provided with a protective earth contact. The protective action
must not be negated by use of an extension cord (power cable) without a
protective conductor (grounding).
Make sure that only fuses with the required rated current, as marked on the
SPS-6/SPS-12 rear panel, are used for replacement.
Whenever it is likely that the protection offered by fuses has been impaired,
the instrument must be made inoperative and be secured against any
unintended operation.
Any interruption of the protective (grounding) conductor (inside or outside the
instrument) or disconnecting the protective earth terminal can make this
instrument dangerous. Intentional interruption is prohibited.
Note
Warning