13
3 Installation
3.1 Rack Mount Installation
Quartet housing frames can be mounted in a standard 19" rack. The unit's front
panel is secured to the rack by installing the appropriate rack screws and nylon
washers. The front panel's paint finish may be damaged if nylon washers are not
used.
For proper ventilation, make sure that the front panel is installed and that the front
panel air vents and rear panel fan assembly are not blocked when power is on.
3.2 DC Power Redundancy
For those Quartet housing frames supporting DC power redundancy, the external
DC power supply connector may be used to get DC power from a second Quartet
housing frame or a Quartet-RPS frame. Interconnecting two Quartet frames
equipped with a DC connector is possible if the total power consumption for all
imaging
modules installed into the two housing frames (for a maximum of 8) does
not surpass the current capacity of one power supply. To find out how much
current is required for the installed modules, refer to the
Specifications
section of
the module’s
Guide to Installation and Operation
. If the total consumption
surpasses the current capacity, a dedicated redundant power supply may be
installed in a Quartet-RPS frame which may hold up to three power suplies for
redundancy purpose. In both cases, during normal operation both power supplies
are active. If a power supply fails, the other power supply instantaneously provides
power to all modules. The
FAIL
LED will be switched on in the defective unit to
indicate its malfunction. In Quartet-RPS and Quartet frames listed in Table 1.1, a
dry contact may be wired to a remote monitoring system to indicate the power
supply failure. Refer to section 4
Power Supply
for more details.
Figure 3.1 indicates how to interconnect two
imaging
Quartet housing frames. Refer
to figures 3.2 and 3.3 for cable construction.
Figure 3.1
Dual Quartet Frame Interconnection
imaging Quartet Tray
imaging Quartet Tray