DPS NetGuardian 16, Руководство пользователя

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· If the alarm input generates an active-high signal, switching to Reversed operation means
the NetGuardian 16 will declare an alarm in the absence of the active-high signal, creating the
practical equivalent of an active-low alarm.
If the alarm input generates an active-low signal, switching to Reversed operation means the
NetGuardian 16 will declare an alarm in the absence of the active-low signal, creating the practical
equivalent of an active-high alarm.
If the alarm input is normally open, switching to Reversed operation converts it to a normally
closed alarm point.
If the alarm input is normally closed, switching to Reversed operation converts it to a normally
open alarm point.
Q. I'm unsure if the voltage of my power supply is within the specified range. How to I test the
voltage?
A. Connect the black common lead of a voltmeter to the ground terminal of the battery. Connect the
red lead of the voltmeter to the batter's VCD terminal. The voltmeter should read b12
and +30VDC.
SNMP FAQs 16.2
Q. Which version of SNMP is supported by the SNMP agent on the NetGuardian?
A.
SNMP v1.
Q. How do I configure the NetGuardian 16 to send traps to an SNMP manager? Is there a
separate MIB for the NetGuardian 16? How many SNMP managers can the agent send traps
to? And how do I set the IP address of the SNMP manager and the community string to be
used when sending traps?
A. The NetGuardian 16 begins sending traps as soon as the SNMP managers are defined. The
NetGuardian 16 MIB can be found on the DPS Telecom website. The MIB should be compiled on
your SNMP manager. (
Note: MIB versions may change in the future.) The unit supports 2 SNMP
managers, which are configured by entering its IP address in the Trap Address field of Ethernet
Port Setup. To configure the community strings, choose SNMP from the Edit menu, and enter
appropriate values in the Get, Set, and Trap fields.
Q. Does the NetGuardian 16 support MIB-2 and/or any other standard MIBs?
A.
The NetGuardian 16 supports the bulk of MIB-2.
Q. Does the NetGuardian 16 SNMP agent support both NetGuardian 16 and T/MonXM
variables?
A. The NetGuardian 16 SNMP agent manages an embedded MIB that supports only the NetGuardian
16's RTU variables. The T/MonXM variables are included in the distributed MIB only to provide SNMP
managers with a single MIB for all DPS Telecom products.
Q. How many traps are triggered when a single point is set or cleared? The MIB defines traps
like "major alarm set/cleared," "RTU point set," and a lot of granular traps, which could
imply that more than one trap is sent when a change of state occurs on one point.
A. Generally, a single change of state generates a single trap.
Q. What does "point map" mean?
A.
A point map is a single MIB leaf that presents the current status of a 64-alarm-point display in an
ASCII-readable form, where a "." represents a clear and an "x" represents an alarm.
Q. The NetGuardian 16 manual talks about control relay outputs. How do I control these from