Grass Valley NV8288 v.1.5 - Manual (Page 35)

NV8288 and NV8288-Plus Digital Video Routers • User’s Guide 25
3. Installation
Making Power Connections
All connectors and cables are provided by Miranda except for the “Y” monitoring cable. The fol-
lowing is a list of cables and connectors and the corresponding part name/number:
Power Supply Monitor and Alarm Connections
The NV6257 and the NV8000 have DB25 connections, located on the rear, that carry alarm and
temperature signals to the router for monitoring purposes. When two NV8288-Plus are connected
together, this monitoring information needs to be communicated to each router. Because one
NV6257 can power two routers, each router is connected to the single NV6257 monitor connection
using a “Y” cable. (See
How to Connect a Single NV6257 to Two NV8288-Plus Frames on
page 29.)
For the NV8000, one router is powered by one NV8000 and each router is connected to the monitor
connection on its own NV8000 power supply. Using a loop-through connection, monitoring infor-
mation can be passed between the two NV8000 power supplies. (See
Connecting Two NV8000s for
Power Supply Monitoring on page 31.) Monitor connections are made at the time power is con-
nected.
The NV6257 and the NV8000 also have a connection, labeled ‘Alarms’, that presents isolated
alarm signals that can be connected to GPI circuits or external alarm indicators. For information on
connecting NV6257 or NV8000 alarms connections, see
Making Alarm Connections on page 47.
Power Cords and Branch Circuits
For added protection in the event of a mains power failure, it is recommended that each power cord
connected to the NV6257 or the NV8000 be connected to a separate branch circuit. A wire bail can
be used to hold the power cable in place to reduce the possibility of an accidental disconnect.
The power cords are the only means of disconnecting AC power. Clearly mark the line side power
connection with its function so that in the event of an emergency, power can be disconnected
quickly.
Making Power Connections
The NV8288 and the NV8288-Plus have a ground lug on the back of the router. Whether to ground
or not is optional and failure to connect the ground does not affect normal operation. However,
grounding helps protect you and your equipment in case of a power anomaly such as a lightning
strike.
Power Supply
Frame
One NV8288 One NV8288-Plus
Two NV8288-Pluses
Connected
NV6257 One WC0087 power
supply (“Y”) cable and
one WC0046 monitor
cable.
One WC0085 power
supply cable and one
WC0046 monitor cable.
Two WC0085 power supply
cables and a “Y” monitor
cable.
1
1. Miranda does not supply the “Y” monitor cable at this time. For instructions on creating a “Y” cable, see Creating a “Y”
Monitor Cable on page 32.
NV8000 One WC0096-00 power supply cable, one WC0097 adapter cable, and one
WC0046 monitor cable. One set for each router.