System Cabinet Physical Description; Spu Electrical Description - HP 3000 Installation Manual

System General Description
• There is no keyswitch on the I/O Extender. Power is controlled from the SPU by means of the
interconnect cable.
• There are no I/O or REMOTE indicators on the front panel of the I/O Extender.
• There are minor hardware differences in the card cages to allow them to be connected together.
Both the SPU and the I/O Extender backplane slots are numbered from 1 through S.
The I/O Extender is completely assembled and tested before shipment.
It
requires no assembly at the site.
The external dimensions are the same as those of the SPU.
SYSTEM CABINET PHYSICAL DESCRIPTION
The SPU and the I/O Extender can be installed in the system cabinet. Two additional devices, such as the
HP 794SA Disc Drive and the HP 9144A Tape Drive, can also be installed in the cabinet. Up to four
devices are supported when plugged into the power tap in the cabinet.
SPU ELECTRICAL DESCRIPTION
The input electrical specifications of the SPU or the I/O Extender are listed below. If an SPU and an I/O
Extender are installed in the same system, both the current and power requirements are doubled.
The SPU and I/O Extender operate on either SO or 60 Hz power without reconfiguration.
VOLTAGE
CURRENT
POWER
FREQUENCY
HOLD-UP
0984
2-2
Single phase
Nominal operating range: 100-120 V AC or 200- 240 V AC
+/ -
10%
Maximum operating range: 90-132 VAC or 180-264 VAC
4A. maximum at 100 VAC
270 watts maximum at maximum output load
48 to 66 Hz
One cycle of input AC can be dropped
without causing a Power Fail condition.