Installing the trx-nxt-512x512 frame – Grass Valley Trinix NXT v.3.3.1 User Manual
Page 153
Trinix NXT — Installation and Service Manual
153
Power Supply Notes
Contact Grass Valley's Technical support for replacement fuse information
(see Contacting Grass Valley
Installing the TRX-NXT-128x128 and TRX-NXT-256x256 Frames
AC Applications
Power supplies are factory-installed and designed to be hot swappable.
Note
Fuses must be selected and installed as appropriate for mains voltage.
For systems with only one power supply, SR/NR-33000 sync cards, the
jumper JN2 must be set to “DC,” otherwise the red “PALARM” LED on the
front edge of the SR/NRs will remain on. If a redundant power supply is
installed later, JN2 must be moved to “AC.” See
DC Applications
Connect the DC Input connector to a DC source.
Note
For DC applications, fusing must be provided externally in accordance
with local electrical regulations. DC input specifications and characteristics
for the Trinix are shown in the
section.
Check to see that the SR/NR-33000 sync cards have jumper JN2 set to
“DC.” See
.
Simultaneous AC and DC Applications
It is possible to connect both AC and DC power sources as part of a system
redundancy scheme. In this case, refer to the AC and DC notes above. SR/
NR-33000 jumper JN2 should be set to AC.
Installing the TRX-NXT-512x512 Frame
AC Applications
The back panel of the frame provides a separate AC connector for each
supply.
Each power supply must be connected to a separate AC mains branch
circuit with an over-current protector that is rated at no more than
20A AC low
line, 10A AC high line.
Note
Grass Valley strongly recommends, whenever possible, using the AC high
line to reduce line currents and heat within the power supplies.
Power supply modules for the 512 x 512 Routing switchers are mounted in
a separate frame and require cabling (supplied) from the DC Output 1 con-
nector of the power supply frame to the DC Input 1 connector of the
Routing switcher frame; and from DC Output 2 to DC Input 2.