Comtech EF Data CDM-570A Installation And Operation Manual page 36

Optional -24V DC Units: The 24 volt DC-powered modems are fitted with two 20mm Slo-Blo
fuses – one each for positive and negative connections. They are contained within a fuse holder
that is press-fit into the body of the IEC power module.
•
For 20 to 36 volt DC operation, use a T5.0A fuse if the modem has no BUC power
supply.
•
For 20 to 36 volt DC operation, use a T6.3A fuse if the modem is fitted with an internal
BUC power supply.
CDMR-570AL Reduced Chassis Depth -48V or -24V DC L-Band units: This unit is fitted with
one Type TR5 Slo-Blo fuse contained within a screw-in receptacle located to the left of the
terminal block.
•
For 42 to 60 volt DC operation, use TR5 6.3A fuses if the modem has no BUC power
supply.
Grounding
CAUTION – CORRECT GROUNDING PROTECTION IS REQUIRED TO PREVENT
PERSONAL INJURY AND EQUIPMENT DAMAGE.
THIS MODEM IS DESIGNED FOR CONNECTION TO A POWER SYSTEM THAT HAS
SEPARATE GROUND, LINE, AND NEUTRAL CONDUCTORS. THE EQUIPMENT IS
NOT DESIGNED FOR CONNECTION TO A POWER SYSTEM THAT HAS NO DIRECT
CONNECTION TO GROUND. IT IS THEREFORE IMPERATIVE DURING
INSTALLATION, CONFIGURATION, AND OPERATION THAT YOU PROPERLY
GROUND THE MODEM USING THE GROUND STUD PROVIDED ON THE MODEM
REAR PANEL AND THAT THE MODEM IS ALWAYS CONNECTED TO THE
PROTECTIVE EARTH.
•
IN FINLAND: "LAITE ON LIITETTÄVÄ SUOJAMAADOITUSKOSKETTIMILLA
VARUSTETTUUN PISTORASIAAN."
•
IN NORWAY: "APPARATET MÅ TILKOPLES JORDET STIKKONTAKT."
•
IN SWEDEN: "APPARATEN SKALL ANSLUTAS TILL JORDAT UTTAG."
Preface
CDM-570A/570AL Satellite Modem with Optional Packet Processor
xxxiv
Revision 5
MN-CDM570A