MANUAL IM635
Installation
Page 11
3.
If applicable, install the unit into rack or cabinet. Follow all manufacturer instructions regarding
installation.
4.
Connect all power, RF and communication cables as required to the unit.
3.3.
Supply Voltage and Fuse
Model 8512 module can be operated with 115 VAC power supply. An AC external switch, which is
located on the rear panel of the UUT, allows user to power up the UUT with AC voltage. The Power
Entry Module Assembly located on the rear panel contains a grounded three-prong AC power
connector, an on/off power switch, and a fuse drawer.
The AC power connector is used to supply single-phase AC power to the unit. This connector also grounds the
chassis of the unit when the AC power cable is connected to a grounded wall outlet. The supplied power cable or
equivalent is recommended for safe operation. A grounded three-prong connection is required for safe operation.
The on/off power switch is used to toggle power to the unit for normal operation. To supply power, set the switch
to ON or |. To disconnect power, set the switch to OFF or O.
The fuse drawer contains a 5 x 20mm 250 V fuse. The current rating of the fuse is listed on the rear of the unit.
Do not install a fuse with a higher current rating than the listed value. Electrical shock can occur if the unit is
connected to AC power while changing the fuse. To prevent personal injury, disconnect the power cable from the
unit and allow the internal power supply to discharge before removing the fuse.
All electrical rack or chassis and machine elements should be Earth Grounded in installations where high level of
electrical noise can be expected. The rack or chassis should be grounded with a rod or attached to a nearby earth
structure such as a steel beam support beam. Connect each apparatus to a single ground point in a star
configuration with low impedance cable. Scrape away paint and other nonconductive material from the area
where a chassis makes contact with the enclosure. In addition to the ground connection made through the
mounting bolt or stud, use a one-inch metal braid or size #8 AWG wire to connect between each chassis and the
enclosure at the mounting bolt or stud.
3.4.
RF Port Connectors
To prevent damage to the device do NOT exceed the maximum allowable power level
specifications of the unit at any port. Use a calibrated torque wrench to tighten all RF
connections.
Based on selected options, a typical Model 8512 Series Switch Unit can contain up to 14 SP6T switches on the
front or rear panels and support SMA connections. Connectors are per MILSTD-348 interface dimensions and
mate nondestructively per MIL-STD-212.
3.5.
Ground Lug
The unit contains a ¼-20 ground stud on the rear of the chassis for grounding purposes.