User's Manual Part 4

DSPbR Series – User’s Manual
Document Number 00000.B Page 74/75
A: Yes, a 15Amp flat earth rated socket is required, fed from a 15 Amp circuit breaker. Note: In Australia, the
standard mains wall socket is rated at 10 Amps and has a smaller flat earth socket insert then the 15 Amp rated
version.
Q: Is the primary mains power supply fused and are the fuses changeable?
A: Yes, the primary mains AC power supply is fused for both 110VA and 240VAC versions. Essentially the PSU
is the same for both 110V AC and 240VAC primary voltage versions, however the Power Inlet Module is
different. Three AC fuses are located on the PSU module, which in turn is mounted into the 19” rack front
mounting panel. The fuses are marked as “Inverter fuse 1”, 2 and 3. All three fuses are accessible by loosening
the relevant six front panel mounting screws as illustrated in the photograph and sliding the PSU unit out far
enough to disconnect the power cable and remove the PSU unit in order to safely inspect and replace where
necessary any of the fuses.
Q: What alarm condition would be expected should any one of the three PSU fuses blow?
A: Primary AC PSU Inverter 1 / 2 or 3 failed.
Q: What is the specification for the replacement fuses?
A: All three replaceable fuses are the same, Refer to RFI Spare parts listing within this DSPbR’s User’s Manual.
Alternative fuse specification – Littelfuse Part no 0234010.P Cartridge 10A medium delay 20mm x 5mm OD
ceramic fuse.
Q: How should the DSPbR be connected to an AC power source?
A: In Australia, it is recommended that the provided 3 metre IEC320-C19 power chord is plugged into a
dedicated 15 Amp rated flat earth and switched AS/NZ 3112 specified mains socket, and that this mains socket
is fed via an independent 15 Amp rated “D” curve circuit breaker.
A: In the USA, it is recommended that the provided 2.5 metre IEC320-C19 to 5-15P power cord is plugged into
a dedicated 15 Amp rated and switched mains socket, and that this mains socket is fed via an independent
15Amp rated “D” curve circuit breaker.
Q: Is there an ON/OFF power switch on the DSPbR?
A: No, the DSPbR has no ON/OFF switch either on the front, nor the rear, it is recommended that the DSPbR is
powered up and down via the wall socket mains switch into which the power cord is plugged. Alternatively via a
circuit breaker, which feeds only the DSPbR repeater mains wall socket.
Q: Should the RFBE or RF combiner output connectors be terminated prior to switching the DSPbR on?
A: Yes. It is important, although there is an isolator in circuit, to protect the RFBE PA’s (RF Power Amplifiers)
that the outputs are all terminated into either the desired coax cable and antenna or 50 Ohm termination load.
Q: Is it necessary to terminate the RFFE (RF Front End) prior to switching the DSPbR on?
A: No, this is not necessary.