Grass Valley NV8256-Plus v.1.2 - Manual (Page 24)

14 Rev 1.2 • 20 Oct 08
2. Introduction
Module Slots and Rear Connections
connections, if one reference fails, the control card fails-over to the redundant reference. When
using different references, or “dual” references, switch takes can occur based on one or the other
reference. For example, ‘VIDEO REF 1’ uses NTSC as a reference and ‘VIDEO REF 2’ uses PAL
as a reference. Using UniConfig, the type of setting is selected: redundant or dual, and if dual,
which outputs reference which video reference on an output by output basis.
Figure 2-11. Connections to Video References (Rear View)
Alarm
The NV8256-Plus provides system alarms that send notification of a malfunction, such as when a
fan or power supply is not functioning properly. Alarms can be connected to indicators that display
visual signals when an alarm is activated. The NV6257 (power supply) and the NV8256-Plus each
have alarm connections that can be connected to external indicator. Creation of an external indica-
tor is outside the scope of this manual. However, basic instructions on wiring the alarm connection
for external monitoring is provided. See
Alarm Indicator Equipment on page 49.
In addition to an alarm connection, the NV8256-Plus can be connected to a router control system
that receives status information from the router’s control card(s). See
Making Router Control Sys-
tem Connections on page 37. The control card reads the status of NV6257’s power supply and fans
through the ‘Power Supply Monitors’ connection. (See Power Supply on page 6.) In addition, the
control card monitors the router’s power supply, fans, and video reference connections. Both
NV6257 and router information is sent to the control system and is viewable using UniConfig.
A SNMP agent can be installed on the router control system (i.e., NVISION NV9000) to communi-
cate system status information to a SNMP manager. Installation of SNMP agents and use of SNMP
managers is outside the scope of this User’s Guide.
The alarm connection is labeled ‘ALARM’ and is located on the rear of the router, as shown in
Figure 2-12. For instructions on making alarm connections, see
Making Alarm Connections on
page 48.
Figure 2-12. Alarm Connection (Rear View)
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
SECONDARY
CONTROL
PRIMARY
CONTROL
SEC
CTRL
PRI
CTRL
AES
REF 1
AES
REF 2
LOOP
THRU
10 B 2
10/100 BT
10 B 2
10/100 BT
VIDEO
REF 2
VIDEO
REF 1
ALARMS TIME
CODE
NVISION
AUX BUS
LOOP LOOP LOOP
Video Reference
Connections
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
SECONDARY
CONTROL
PRIMARY
CONTROL
SEC
CTRL
PRI
CTRL
AES
REF 1
AES
REF 2
LOOP
THRU
10 B 2
10/100 BT
10 B 2
10/100 BT
VIDEO
REF 2
VIDEO
REF 1 ALARMS
TIME
CODE
NVISION
AUX BUS
LOOP LOOP LOOP
System Alarm
Connections