46
Rev 1.3 • 29 Mar 09
3. Installation
Making Alarm Connections
Making Alarm Connections
The NV8256-Plus provides system alarms that notify you of a malfunction, such as when a fan or
power supply is not functioning properly. Alarms can be connected to an external alarm indicator
that displays visual cues when an alarm is activated. The NV6257 (power supply) and the NV8256-
Plus each have alarm connections. Miranda does not provide external indicator equipment, but does
provide instructions on wiring the alarm connections. See
Both the NV6257 and the router send status information to the router control system. For more
information on the alarm connections, see
How to Make Alarm Connections
1 On the rear of the
NV6257
, locate the ‘Alarms’ connection, as shown in Figure 3-16.
Figure 3-16. Power Supply Alarms Connection on the NV6257 (Rear View)
2 Connect to the ‘Alarms’ connection using a DB25 connector and cable.
3 Connect the other end of the cable to an external alarm indicator. See
page 47 for information on wiring the DB25 connector.
4 On the rear of the
router,
locate the ‘ALARMS’ connection, as shown in Figure 3-17.
Figure 3-17. System Alarm Connection on Router (Rear View)
5 Connect to the ‘ALARMS’ connection using a DE9 connector and cable.
6 Connect the other end of the cable to an external alarm indicator. See
for information on wiring the DE9 connector.
Alarm Indicator Equipment
An external alarm indicator can be created to display visual cues when a failure has occurred on the
NV6257 power supply or the NV8256-Plus router frame. LEDs can be wired to specific pins on a
DE9 or DB25 connector. Each LED indicates what specific router module has failed.
FAN
Output
Power 1
Output
Power 2
Power
Supply
Monitors
Alarms
DB25
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
Содержание NV8256-Plus
Страница 10: ...x Rev 1 3 29 Mar 09 Table of Contents ...
Страница 60: ...50 Rev 1 3 29 Mar 09 3 Installation Verification ...
Страница 66: ...56 Rev 1 3 29 Mar 09 5 Configuration UniConfig ...
Страница 72: ...62 Rev 1 3 29 Mar 09 6 Maintenance Obtaining Service ...
Страница 82: ...72 Rev 1 3 29 Mar 09 9 Part Numbers Frame Expansion ...
Страница 88: ...78 Rev 1 3 29 Mar 09 Index ...